Rules For The Latvian Et Seq Of The Lbn 222-15 "water Supply Structures"

Original Language Title: Noteikumi par Latvijas būvnormatīvu LBN 222-15 "Ūdensapgādes būves"

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Cabinet of Ministers Regulations No. 326 in 2015 (30 June. No 30 44) provisions on the Latvian et seq of the LBN 222-15 "water construction" Issued in accordance with article 5 of the law on construction of the first subparagraph of paragraph 3 1. Latvian et seq of the LBN approved 222-15 "water supply structures" (hereinafter referred to as the Latvian et seq of the LBN 222-15). 2. The Ministry of economy in cooperation with the relevant technical standards Committee recommends that national bodies for standardisation in relation to these provisions, the reliance and designing standard applicable list. 3. National standardisation body shall publish the tīmekļvietn their national list of the standards that apply to the Latvian et seq of the LBN 222-15. 4. the Projects that developed within or submitted to būvvald to this harmonization provisions for the entry into force of the corresponding period in the normative requirements need not be processed according to the Latvian et seq LBN 222-15. The Prime Minister is the Rapidity of the Newsletters instead of Minister of Economics, Minister of health of the Ministry of economy Guntis Belēvič submitted version of the approved by the Cabinet of Ministers of 30 June 2015 regulations no 326 et seq of Latvia LBN 222-15 "water structure" 1. General questions 1 et seq of the water requirements of the premises (except temporary water supply inženiertīkl and internal plumbing building) for the design and construction works. 2. the water supply construction project in accordance with this et seq, and other regulations in the field of construction. 3. the requirements set out in et seq of the fire water supply does not cover water supply structures, including the water supply, set the external inženiertīkl (hereinafter referred to as the water supply system) facilities where explosives are produced or stored. 4. the water supply system in the design standard, which list the internet site is published by the national standardization body. 5. Designing of water objects, take into account the requirements of the laws of the territory planning, municipal planning and binding rules, as well as the existing water supply structures of technical, economic and hygienic assessment and evaluating the usefulness of making already (regardless of nationality), for use and intensification of activity options. Construction intentions in drafting the dossier consistent with sewer construction plans required documentation and the water consumption and sewage discharge balance analysis. 6. the structure of the water protection zone defined according to the laws established in the area. 7. the quality of drinking water must comply with regulations for drinking water, surface and underground water quality requirements laid down in the area and the quality of drinking water must comply with regulations for drinking water, surface and underground water quality requirements laid down in the fields and the water hardness should not exceed 6 milligrams, the equivalent per litre (mg-EQ./l). Prepare, transport and storing drinking water, you must use the reagents, pipe internal anti-corrosion Coatings, as well as filter materials, which assess compliance with laws and regulations. Production needs for water quality must meet the technological requirements as well as ensuring adequate hygienic conditions of the operating personnel. Watering water must comply with the requirements of higiēniskaj and agrotehniskaj. 8. documentation of the construction plans of the main decisions taken by the technical solutions and the order of the works, comparing possible matches. Technical-economic calculations carried out those options, which benefits (shortfalls) without calculations cannot be determined. 9. Ensure that the water supply structures could not be without permission to access of unauthorized persons. 2. calculate the consumption of water and pressure calculation of water consumption 2.1 10. drinking water consumption of household needs and food a day per capita (average for the year) is defined by this annex table 1 et seq. 11. potable water consumption in cubic metres per day (m3/dn) (annual average) is calculated using the following formula: v = Qdn. SqN/1000 where: (1) q – water consumption (l/dn) after this annex table 1 et seq of the N-number of the population. The maximum and minimum water consumption per day (m3/dn) is calculated using the following formula: URQdn.max = maxQdn. v. Cdna. (2) URQdn.max = Cdna. minQdn. v.
KDN-water dispersion coefficient day – shall be determined taking into account the degree of labiekārtotīb residential buildings, business, daily consumption of water changes a year, season and week. Water consumption coefficient of dispersion is the day: URKdn.max = 1.1-1.3 URKdn.min = 0.7-0.9. Water consumption per hour (m3/h qh) is calculated using the following formula: URqh.max = Kh max URQdn.max/24 (3) URqh.min = Kh Kh-URQdn.min/24 min of water dispersion coefficient per hour-is determined using the following formula: URKh.max = URKh.min = amax bmax (4) where: (a) the bmin amin-factor, determined by taking into account the labiekārtotīb residential buildings, business and local conditions amax = 1.2-1.4 which, but amin = 0.4 – 0.6. b-factor, determined by taking into account the population of the locality (et seq of this annex table 2). 12. Water consumption for irrigation of the territory is determined by this annex table 3 et seq. 13. the consumption of drinking water production facilities, as well as residential and public buildings shall be determined in accordance with the et seq on building internal plumbing and drains. 14. Water consumption and production needs of agricultural production in plants is determined on the basis of regulations technical documents. 15. Water distribution to the 24-hour hours for residents, as well as manufacturing and agricultural businesses is determined by water schedules. 16. Water consumption schedule provides for a regulatory tank maximum water consumption, irrigation, etc. area 2.2. Fire water consumption 17 settlements and facilities provide an external fire-fighting water supply from the water supply system, which is usually combined with drinking water or technical water supply. 18. in the light of this section 9.5 et seq., external fire-fighting water supply may be envisaged to open (also from natural) water tanks or cisterns for closed water (without installing a centralized water supply system) in the following cases: 18.1. settlements with a population of less than 5000; 18.2. the locales that are not to be used for the centralized fire water supply system, separately for existing residential buildings and public structures, which fire-fighting water consumption does not exceed 25 litres per second (l/s); 18.3. the locales that are not to be used for the centralized fire water supply system, the individual existing warehouses and production structures, which fire-fighting water consumption does not exceed 30 l/s. 19. external fire-fighting water supply system may not provide: 19.1. outside built-up areas to individual apartment buildings and farm groups, if there is no public or production facilities, as well as public buildings, which būvapjom not exceeding 1000 m3, if no further than 1000 m from them are in water sampling point; 19.2. the locales separately existing low-rise residential buildings and mansions, if no further than 1000 metres of water intake is located. 20. external fire-fighting water consumption one fire and at the same time, the number of possible fire populated places adopted by this annex table 4 et seq. 21. external fire-fighting water consumption one fire deletion residential buildings, warehouses, factories and public buildings is calculated by this annex table 5 et seq as construction with the largest water consumption required. 22. external fire-fighting water consumption one of the warehouse fire and plants given by this annex table 6 et seq as construction with the largest water consumption required. 23. external fire-fighting water consumption one of fire deleting objects with liquefied gas reservoirs is calculated by this annex table 7 et seq. 24. external fire-fighting water consumption one of fire deleting objects with petroleum, petroleum products and dangerous chemicals or product tanks calculated in accordance with the deletion and the cooling water required for consumption. Deletion and cooling water consumption required are the following: 24.1. foam solution for deletion – 0.08 litres per second per square meter (hereinafter referred to as the l/s m2); 24.2. the burning tank, 0.5 litres of cooling per second per meter (hereinafter referred to as the l/s to m) to the entire perimeter of the reservoir; 24.3. next to the reservoir for cooling – 0.2 l/s to m party reservoir perimeter; 15.2. the water cover equipment-1 l/s; 15.2. fuel filling stations with underground reservoir total volume up to 100 m3 – 10 l/s; 24.6. petrol stations with a total capacity of the reservoir up to 200 m3-15 l/s. 25. external fire-fighting water consumption one of open fire timber storage areas calculated from this annex table 8 et seq. 26. external fire-fighting water consumption one of the open fire in combustible materials, substances or products in storage areas (such as junctions, container yards) respectively by the annex 5 et seq., 6., tables 7 and 8. 27. If a building divided by the fire wall under the protection of the structures et seq requirements external fire-fighting water consumption is determined in accordance with the shipbuilding part of it, which is the largest water consumption required. 28. external fire-fighting water consumption in the United ūdensvado with the fixed fire hoses, sprinkler systems and internal water cover equipment must be such that during the first hours ensure greater overall water consumption according to building internal et seq the aqueduct and sewerage and the applicable standards. 29. external fire-fighting water consumption anti-foaming, chilling, and the outer barrel of the lafet water cover equipment determined in accordance with the requirements of the applicable standard, allowing an extra 25% of the water from the hydrant water consumption according to this 22 et seq., 23., 24 and 25. Total water quantity may not be lower than this annex 6 et seq and table 7. 30. At the same time, the number of possible fires in built-up areas and outside the factories and warehouses located depends on the company or the warehouse areas and forest fire or explosion: 30.1. If the area is 150 ha and more (oil, oil products, gas and dangerous chemical substances or products from the shop floor or storage area – 100 ha and larger) may at the same time, two fires; 30.2. If the area is less than 150 ha (oil, oil products, gas and dangerous chemical substances or products from the shop floor or storage area — less than 100 ha), can one fire; 30.3. stand-alone areas situated technologically related businesses, the number of fire shall be taken as separate areas, if you have fire and building regulations governing security and fire safety specific spaces. 31. Assumes that the fire extinguishing duration is three hours. 32. the maximum fire water renewal time must not exceed the following: 32.1. petroleum, petroleum products, gas, hazardous chemicals, as well as explosive and fire plants and warehouses to 24 hours; 32.2. the locales – 36 hours; 32.3. outside built-up areas – 48 hours. 33. The fire-fighting water renewal time may reduce water supply to economic needs and the food category 1 and 2 in the water systems of up to 70% and 3 categories in the water systems – up to 50% of the calculated consumption. The water supply needs of production made an emergency schedule. 2.3. The pressure in the water system 34. maximum water consumption during minimum water pressure in water supply system of settlements (to enter the building in the ground surface level) one-story structures are 0.1 MPa; construction of a Multistorey water pressure increased on 0.04 MPA for each floor. 35. the minimum water demand during water pressure is 0.03 MPA every floor except the first floor, providing water supply water storage tanks. 36. If some high rise buildings or the construction of a set built with smaller floors or elevated place and they can not provide the needed water pressure, may provide the local pressure equipment in accordance with the promotion et seq on building internal plumbing and drains. 37. At the brīvkrān of the water supply must be 0.1 MPa high pressure. 38. the water supply pressure is taken depending on the technological requirements. 39. the pressure in the water supply systems for the supply of drinking water to consumers must not exceed 0.6 MPa. If the pressure at the consumer exceeds 0.6 MPa, separate buildings or it sets down pressure regulation water supply system equipment or zoning. 40. the fire-fighting water supply systems is generally low; high pressure fire water system may be to design, provided appropriate justification. High pressure fire water supply system of stationary fire pumps provided for five minutes after receiving the signal of the outbreak of the fire. 41. the low fire pressure water (ground level) at the time of the fire must be at least 0.1 MPa. High pressure fire water system pressure to provide a compact Jet 10 m with full fire-fighting water consumption if the fire barrel mounted above the highest point of the building. Joint water supply water pressure must not exceed 0.6 MPa. 3. Water supply schemes and 42. Settlements in centralized water supply system provides: 42.1. potable water consumption in residential and public buildings; 26.2. fires; 26.3. the consumption of drinking water plant; 26.3. the manufacturing and agricultural production needs that require water to drinking water quality or that it is not appropriate for individual water supply systems; 26.4. water preparation equipment failure, water and sewer inženiertīkl rinsing and similar needs. 26.5. If appropriate justification can be provided, a separate water supply areas and external inženiertīkl greenery, fountains, and similar watering needs. 43. Water supply system and the scheme of choice, comparing possible options, taking into account the characteristics of the object, the terrain, the required pressure, water quality and water supply security. The centralized water supply system of one or several mining sites in the water supply areas or factories. 44. Comparing the options based on: 44.1. ūdensgūtn select and use a variety of consumers; 44.2. a centralised water supplies and the local water utility; 44.3. the water supply system of zoning and regulatory tanks and pressure equipment to improve; 27.6. the purified waste water or run-off of production using water supply or irrigation; 27.7. the construction of water supply through the rounds. 45. the settlements of central water supply system provides: 45.1. potable water consumption in residential and public buildings; 45.2. fires; 45.3. the consumption of drinking water facilities; 28.2. the manufacturing and agricultural production needs, which require water, which has the quality of drinking water, or it is not appropriate for individual water supply systems; 28.3. the preparation of water for domestic consumption, water and sewer inženiertīkl rinsing and similar needs; 45.6. If there is a matching argument, may be fitted with a separate water supply and irrigation of plantations, fountains, and similar needs. 46. The water supply security is such a degree of centralized water supply system categories: 46.1. (I) – more than 50000 residents service, which may reduce the water supply to the economic needs and food consumption, up to 30% of the calculation, but the production needs – to the limit set by the company's emergency schedule; water supply reduction duration shall not exceed three nights; water supply reduction or suspension for a period of up to 10 minutes are allowed to disconnect the damaged areas, and centralised water supply systems on reserve elements; 46.2. the second (II) – 5000 to 50000 inhabitants of service, which may reduce the water supply as much as category I centralized water supply system and water supply reduction duration shall not exceed 10 nights; water supply reduction or suspension for a period of up to six hours is allowed to disconnect the damaged areas, and centralised water supply systems on reserves or to make repairs; 46.3. the third (iii) – less than 5000 residents service, which may reduce the water supply as much as category I centralized water supply system and water supply reduction duration shall not exceed 15 a day; water supply reduction or suspension for a period of up to 24 hours is allowed to perform the repairs. 47. The centralised water supply category more objects is determined by the locality in which the larger population. If you want to increase the water supply for agricultural production and support needs, provide local water supplies. Water supply system elements category is determined according to their functional meaning in common water supply system. 48. the drafting and scheme of water supply, assesses the existing structures of technical, economic and hygienic situation and future. 49. Ūdensgūtn, trunk of water supply pipelines (hereinafter referred to as the trunk road) and the preparation of water under the calculation of hours the average consumption in the 24-hour maximum consumption (taking into account regulatory tank location). 50. the water supply system (including the pumping station and regulatory tanks) to calculate the total transactions for the following water supply mode (if there is appropriate justification, can take another water demand calculation mode or do any of the above calculations): 50.1. the maximum daily consumption, maximum, average and minimum consumption per hour, as well as the maximum consumption per hour and fire water quantity. 50.2. the average consumption per day average consumption per hour; 50.3. the minimum consumption day-minimum consumption per hour. 4. The nature of the terrain and of the ūdensgūtn 51. Can be underground or surface water extractions. Plant water supply with technical water we recommend using treated sewage. 52. The terrain selection based on hydrogeological, hydrological, topographic, hidroķīmisk, ihtioloģisk, hidrobioloģisk and other research materials and hygienic survey data. 53. The terrain is chosen according to the following basic criteria: 53.1. water for food security; 53.2. water compliance with the drinking water quality requirements; 53.3. ūdensgūtn protection of the entire operation. 54. the supply of drinking water is preferred over the use of ground water (if necessary, artificial supplements). Technical water supply drinking water quality requirements according to the groundwater used only when there is no alternative to the lower quality of the terrain. 55. the surface of the terrain the minimum average flow rate per month is determined by the table in annex 8 et seq., depending on the centralised water supply category, which is determined in accordance with this paragraph 46 et seq. 56. in order to assess the underground and surface water resources use in water supply, take into account: 56.1. water consumption and water balance, of ūdensgūtn (with a forecast for 25 years); 56.2. ūdensgūtn water quality characteristics and prediction of change; 56.3. Lees and the characteristics of the banks, the arrangements and the coast of movement of sustainability; 56.4. ūdensgūtn's winter mode; 56.5. water temperature over the months of the year and the development of plankton in different depths; 56.6. spring pal; 56.7. groundwater inventory replenishment in the conditions and possible interference by installing water, drain, etc.; 54.1. the possibility of artificially replenish underground water reserves; 56.9. environmental protection, fisheries, as well as the hygiene and security of controlling State institutions and other services of the statutory requirements. 57. The centralised water supply needs of underground water only after a trial in accordance with the laws and regulations on the use of the subsoils-hydrogeological research works, groundwater is calculated for a particular type of use and groundwater acceptance national limited liability company "Latvian environment, geology and Meteorology Centre". 58. Depending on the terrain and distinguishing between the underground and surface ūdensgūtn ūdensgūtn. 5. Ūdensgūtn of the underground ūdensgūtn 5.1 5.1.1. General instructions Ūdensgūtn and 59. type of disposition schemes choose depending on the area, the geological and hydrogeological conditions of hygiene. 60. in designing new or extending existing ūdensgūtn, taking account of their mutual interactions. 61. Underground water borehole drilling for deployments, and groundwater monitoring deployments must receive a license under the regulations on the use of the subsoils licensing procedures. 62. Any underground construction ūdensgūtn of rebuilding plans foreseen in the documentation and quality used drilling, tamponēj them. 63. provide the underground ūdensgūtn underground water monitoring and monitoring of the construction of the inženiertīkl programme. 64. Groundwater abstraction used for water abstraction boreholes (including nailed in uk), Oh and source grod kaptāž. 5.1.2. Water hole 65. Water borehole construction intentions in the documentation indicates the volume of research work on hydrogeological, boring way to furnish the water borehole construction and depth filter type, apvalkcauruļ and filter materials, open equipment and the volume of work by pumping water borehole installation. Water borehole equipment must be sealed. Water bore hole in the shaft may be dispensed only if the hydrogeological and hydrological conditions fully supports the mine against flooding. 66. following the completion of drilling work is issued water bore a passport in accordance with the laws and regulations on the use of the subsoils. 67. on the basis of the water hole of passport data, develop water supply systems construction intentions documentation that determines the pump station construction above the water borehole, pump brands, piebraucamo and others, with a total water supply issues. 68. Water bore depends on the hydrogeological conditions and water borehole depth and diameter. 69. Water borehole design must be such as to be able to measure the water level and the debut and take water samples, as well as to carry out repairs or rebuilding. 70. Depending on the local conditions and the top equipment uk uk top horizon of surface or underground Chamber in the Pavilion. The appropriate size of the plan depends on the electrical equipment and control the position of the instrument. The Pavilion or the camera height depends on the size of the equipment, but it may not be lower than 2.4 meters. 71. Oh tube top under construction at least 0.5 m above the floor. 72. Drilled the well pump station assembled and dismantled with the mechanisms through which the hatch is located above the top of the wells drilled. 73. The spare water borehole number determined by this annex table 9 et seq. 74. Water holes in filters, which points to the structure and size is dependent on the hydrogeological conditions, and the operational mode of the debut. 75. The outer diameter conduits must be at least 50 mm more than the external diameter of the filter, but if the filter is flush with the gravel, 100 mm-at least for most. If a water borehole wall reinforced with pipes, the external diameter of the apvalkcauruļ must be at least 100 mm larger than the diameter of the filter. 76. The filter stages, if the spiedūden layer thickness is up to 10 m is equal to the thickness of the layer of water. The filter stages length layers of zero is equal to the thickness of the layer of water from which the deduction of water level decrease during operation (the filter must be flooded), taking account of this in paragraph 77 et seq. If the water layer thickness is greater than 10 m, the length of the period of work of the filter is determined, taking into account the rock permeability, water abstraction boreholes productivity and filter design. 77. The filter stage projected work at least 0.5-1 m from the water to the upper and lower level. 78. The filter pipe length must be such that its upper end is at least 3 m above the upper part of the conduits, if wells are up to 50 m deep, and at least 5 m, if the UK is deeper. The gap between the pipe and the filter are apvalkcaurul with seal seals. 79. Using several layers of water filter working horizon in every stages of the water layer, and compatible with the pipe (concluding that weak rock passed through the water). 80. Sandy nosēddaļ length is up to 2 meters. 81. the unfiltered water drilling structures can use irdeno sand deposits, if they are sustained over the rocks. 82. After the water drilling and installation of filters must be washed. If you used the bezserd drilling equipment with clay turbidity, turbidity should be rinsed to clear water. 83. in order to determine the intention of the construction documentation adopted by the water bore the actual debut, checking the bilge. 5.1.3 Grod wells 84. Grod wells used mainly for water abstraction from groundwater layers that are not deeper than 10 m from the ground surface. 85. If the groundwater layer thickness is greater than 3 m, the horizon of the pilndziļum Oh, that includes all the water layer thickness. If the groundwater layer thickness is greater than 3 m, depending on the supply of the pilndziļum horizon pilndziļum or ak. If the well capacity is small, aka extended and create additional volume of water accumulation. 86. Building the water part of the sandy bottom masters, aka the bottom of the horizon of sand-stone or porous concrete. 5.1.4. Source of 87. kaptāž water sources be provided for reception kaptāž (camera or shallow grodak). 88. Up the fluid source water perception through the lower part of the Chamber, but down-flowing through the slits in the walls. 89. The design of the kaptāž rock, a source that is crumbling, the camera can be without a filter. Irdeno rocks the camera requires the inverse filter. 90. the source of the kaptāž protects against dirty run-off entering, caursalšan and flood waters. 91. To clean water from the source of suspended substances, source kaptāž camera should be divided into two parts, one for the other, settling the water-pump. 5.1.5. artificial groundwater recharge groundwater 92. artificial replenishment project in the following cases: 57.2. underground ūdensgūtņ to increase productivity and to stabilise the operation; 92.2. environmental protection (to prevent the unacceptable reduction in the levels of groundwater, which can harm plants). 93. Underground water volumes used in surface and ground water. 94. Groundwater replenishment project on open or closed type infiltration equipment. 95. Open infiltration equipment designed to complement the first (from the Earth's surface) the aqueous layer, if it is not covered by a waterproof layer or thickness is of not more than 3 metres. 96. Designing the infiltration basins: 96.1. on the bottom considering at least 0.5 m depth well filter bottom layer; 96.2. the strengthening of bottom and sides protect against leaching basin drain; 96.3. infiltration basin filling water supply control and measurement equipment; 59.9. piebraucamo paths of cars and mechanisms. 97. the infiltration basin bottom width must be greater than 30 m, length – 500 m water layer thickness should be 0,7-2,5 m. need at least two pools. 98. The closed campus construction project as seepage pipe or grod Oh. 99. the infiltration structure must ensure the renewal of production: 99.1. open infiltration structures-mechanically or hydraulically by removing a filter surface of the polluted layer (open structures and emptying the recovery is not permissible, if the temperature is below 0 ° C); 99.2. closed infiltration structures – with the methods used in drilling water recovery. 100. on the basis of a complex hydrogeological and technical-economic calculations, taking into account the purpose of the artificial recharge waters, water scheme, the quality of water to be delivered and the infiltration of structures and the operational nature of the ūdensgūtņ, choose the structure of the total infiltration scheme, as well as the number of structures and productivity. 101. the distance between the infiltration and ūdensgūtn of construction would be based on the water quality forecasting calculations, as well as taking into account the seepage of water to be delivered for additional clearance filtrējošo layers and mixing with ground water. 5.2. the surface of surface ūdensgūtn ūdensgūtn 102. must provide: 102.1. the protection of water supplies from biological and land cover of the sediment, banks, plankton and melt into; 102.2. fish farming service requirements water basins that have fisheries role. 103. the constructive scheme of surface ūdensgūtn is dependent on water supplies category (this paragraph 46 et seq), as well as to observe the water level of calculation (this annex table 10 et seq) and the protection of the environment, fisheries and maritime services. 104. the main structure to the class must conform to the ūdensgūtņ category. Secondary structures class is one rank below. The main building is a building in which to ūdensgūtn were unable to provide the calculation of water supply to consumers. Secondary structures are structures that were to supply water to consumers does not fall. Reservoir dam class must meet the waterworks structures design et seq, laid down in but it must not be less than: 104.1. class II-category I ūdensgūtn; 104.2. class III – class II ūdensgūtn; 104.3. class IV-III, ūdensgūtn. 105. Drinking water supply located upstream of ūdensgūtn settlements sewerage outputs and wharfs, taking into account the possibility of creating a zone. 106. Surface water extraction conditions depend on the shore and seabed stability, melt and ice regimes and of pollution indicators (annex table 11 et seq). 107. Ūdensgūtn plan using this table of annex 12 et seq., depending on the required category and using the attachment table 11 et seq, depending on the natural surface water conditions. 108. the raising of the category by one stage ūdensgūtn with underwater (submerged) in water sampling equipment is permitted in the following cases: 108.1. underwater (submerged) compensating water intake facilities, if they are provided at pašskalošan; 108.2. is installed, the warm water supply intake openings in 20% of the total amount of water to be acquired and created special protective devices against banks; 108.3. established a safe system for the retention of the crates, banks ūdensņemšan hole, fish protection device and the leaching of water by gravity. 109. the Ūdensgūtn schema and placement choices difficult local conditions, selected on the basis of special studies. 110. If necessary, provision should be made for water treatment with chlorine to prevent fouling growth ūdensgūtņ equipment items on biological organisms. Through these measures, the following conditions shall be satisfied: 110.1. water treatment reagents, as well as the periodicity and duration of the processing shall be determined on the basis of technological research, or the chlorine dose takes about 2 milligrams per per litre (mg/l) more than to have the water of hloruztveršan, but at least 5 mg/l; 110.2. chlorination period and duration depends on the water hloruztveršan capacity: 110.2.1. up to 3 mg/l-spring and fall 7-10 days; 110.2.2. more than 3 mg/l, from May to October on days when the average temperature is above 10 ° c. 111. Siphon type may use tap categories II and III ūdensgūtn. 112. If the water object passes through the siphon or gravity type, tap the construction depth must be at least 0.5 m to the top of the tube, to provide water for leaching and protect against impact of anchors. 113. Ūdensgūtņ pump station project in accordance with this section 7 et seq. 6. Water preparation 6.1. Water preparation equipment 114. Water treatment methods, equipment, parameters for the calculation and dosage of reagents is determined by the technological research of materials and service experience, depending on the terrain, water quality, water treatment facilities production and local conditions. 115. atdzelžošan methods of water the experimentally determined. If the iron content in the water is not greater than 2 mg/l, priority shall be given to the natural aeration. 116. Water preparation equipment designed for smooth operation of 24-hour maximum water consumption, with the option of disconnecting individual fixtures preventive inspections and repairs. 117. in determining water preparation equipment, the total water consumption, take into account the same equipment needed for water consumption. 118. The preparation of water types and the parameters for the calculation is determined depending on the concentration of pollutants in the water, the necessary degree of purification and of the technological equipment of the machine data. 119. Water preparation equipment provides also: 119.1. the device for measuring the quantity of water; 119.2. devices and prepare raw water samples. 120. If water preparation equipment serving permanent staff, sanitary knot, shower and wardrobe space shall be determined in accordance with the schedule of public structures et seq. 121. Water preparation in functional structure building and its associated space allocation and size determined in accordance with the construction agent or operating requirements. 6.2. the water supply system disinfection 122. Water supplies so as to furnish the disinfection. Water disinfection methods and reagents for dose chosen depending on water consumption and quality, the efficiency of purification and delivery conditions. Depending on the water quality indicators for the water supply system disinfection may be continuous or periodic. 123. the water supply system (e.g., reservoir, watertower, mixer, inženiertīkl) disinfection must be carried out before commissioning. Water drilling before the commencement of operation of the disinfection is mandatory. 124. Water disinfection using chlorine, ozone, ultraviolet radiation, potassium permanganate, and other features that ensure adequate quality of drinking water. 7. Pump Station 125. Water supply security and in accordance with this paragraph 46 et seq has the following categories of pump station: 125.1. fire and joint fire and drinking (technical) of water supply pump station – category I; 125.2. the fire and United fire and drinking (technical) of water supply pump station, where the objects are complied with this paragraph 18 et seq requirements – category II; 125.3. pump station of water at one of the spiedvad, as well as spraying water spraying, – category III; 125.4. pump station energy-supply security category determined in accordance with the rules of the installation of the electrical equipment according to the pump station category, taking into account this annex 13 table et seq. 126. the type and number of the pump is chosen based on the pump, water inženiertīkl and external regulatory capacity of joint actions, the daily and hourly water consumption, as well as the timetable subject to reaction to fire requirements. The pump unit must ensure optimal pressure in all work modes. 127. potable water pump rooms not install pumps for contaminated and poisonous liquid solution, with the exception of the fire fighting pumps blowing solution liquid. 128. Pump Station pumps of the same interest groups by passing water to the water supply in one external inženiertīkl, spare pump shall be determined by the number of the table in annex 13 et seq. 129. The pumping stations and wells with submerged pumps for fire water supply needs, regardless of the number of pumps and their team needed at least two sūcvad. Sūcvad diameter is calculated so that by disconnecting one of the categories I and II sūcvad pump stations, the rest of the sūcvad ensure complete calculation power, but a category III pump station – 70% of the calculated capacity. Category III must be fitted in the pump station of one sūcvad. 130. Sūcvad are normally fitted with pump direction 0.005 rises. Change in diameter of the tap, made for a bizarre transition. 131. for category I and II pumping stations required at least two spiedvad. Category III must be fitted in the pump station of one spiedvad. At the pumping stations, fire cisterns and open fire-fighting water tanks provide water sampling location in fire-fighting of this 195.207. et seq and point. 132. and partly go into the pumping stations go into laying down measures for the prevention of flooding of the pump, if it is a larger capacity pumps, fixtures or emergency water pump room, pump electric motor design at least 0.5 m above the floor, emergency water by gravity through a valve or damper, novadām to sewerage or surface, if necessary, the water must be atsūkn from the recesses in the floor. If the installed emergency pumps, their capacity to be 2 hours of operation, the pump room nosūknēt to water with a layer thickness of 0.5 m. Accidents start and pump operation provides automatically depending on the water level. 133. the width of the aisle at facilities governed by the manufacturer shall be determined by the equipment passport. Pumps, which spiedvad to 100 mm in diameter (included) is allowed the installation of pumps to the wall or to the bracket and two pump Assembly to the base unit if the distance between the projections shall not be less than 0.25 m and around two combined units of at least 0.7 m wide passage. In other cases, the pumping station must be the width of the aisle: 133.1. not less than 1 m – between the pumps or electric motor; 133.2. not less than 0.7 m – between the pumps or electric motor and wall spaces go into other rooms, not less than 1 m, and the width of the aisle of the electric motor, the parties must be sufficient to be able to dismantle the rotor axis; 133.3. not less than 1.5 m – between the compressors and air pumps; not less than 1 m, between the compressor and the wall, as well as between the air pump and the wall; 133.4. not less than 0.7 m between the rigid machine projections; 133.5. not less than 1 m-power distribution. 134. The technological equipment, fixtures and plumbing service requires the following lifting and handling equipment (cranes, used only for the Assembly of technological equipment, necessary): 134.1. the mass of the load lifting tackle or up to 5 t-beam crane with manual control; 134.2. the cargo weight that is greater than 5 t-bridge crane with manual control; 134.3. lifting loads over 6 m or 18 m to move cargo on greater distance – crane with wire; equipment and fixtures 134.4. whose weight does not exceed 0.3 t may be transferred by means of the rigging. 135. In rooms where the crane equipment, necessary mounting area. Equipment or fixtures delivered to the Assembly area with rigging products or with lifting tackle on beams, which will continue outside the building. Around facilities that install on the mounting area must be provided for the crew area 0.7 m wide free zone. Gate or door size determined depending on the plant size or the size of the vehicle (with freight). 136. The crane's load capacity is determined depending on the maximum weight of load, taking into account the manufacturer's requirements for moving equipment and possible equipment size and mass gain perspective. 137. Installing cranes indoors, their height from the Assembly area to the bottom of the rafters of the Division defines and builds them according to the cargo crane installation and operational safety requirements of the technical regulations. 138. If the height of the machine operation and management of the site or to latch (bolt) to arm or leadwire is greater than 1.4 m from the floor, you need space for the crew or the bridge, from which the distance to the place of the crew shall not be more than a meter. 139. the pumping stations needed municipal facilities and utility room. Sanitary knot may not predict where the pumping station is located closer than 50 m from the shop floor, which has a municipal area, or up to 100 m away, where the pumping station serving no more than two people. Automated pumping stations that do not have a permanent staff, the municipal area is required. 140. Pumping Station at the horizon control measuring equipment in accordance with this section 10 et seq. 141. fire-fighting pump station may be stashed in the basement of structure, cokolstāv and the first floor, where the fire of that space is separated from other rooms according to requirements of structures et seq fire protection, and provide direct exits to the outside. 8.142. Water from the motorways to ūdensgūtn urban area is dependent on water supplies and construction category. 143. The design of two or more parallel highways, they provide connection nodes depending on the motorways and interdependent, so the number of ūdensgūtņ, one of the main emergency unlock of the defective stage, water supply to consumers is not reduced by more than 30%, but production needs water to be delivered in accordance with an emergency schedule. 144. If water is supplied from one of ūdensgūtn on one line, you need a spare amount of water according to this point of 186 et seq. If water is supplied from several ūdensgūtn, reserve water may be reduced, if you run this in paragraph 143 of the et seq. 145. emergency relief calculated duration of class I water systems is determined by the table in annex 14. et seq. Category II and III water systems table 14 calculation of the duration should be increased accordingly, 1.25 and 1.5 times. 146. Water supply external inženiertīkl are primarily serves. Not allowed in the water of the sacilpošan external inženiertīkl, internal inženiertīkl by using the water. External inženiertīkl of izzar water supply line may be envisaged: 146.1. water supply for production purposes, if the emergency relief period may be water outage; 146.2. the supply of drinking water, if the water is not greater than the diameter of 100 mm; 146.3. potable water supply and fire-fighting, if the length is not greater than 200 m and a diameter of not less than 100 mm and looped the attachment location to tap fire hydrants are located. 147. Settlements with a population of up to five thousand may be about 200 m longer izzar lines, if the diameter is not less than 100 mm and fire water consumption is up to 15 l/s, or building up to 12 fixed fire hose system and installed additional fire fighting water storage reservoir, 50% of the total amount of water in the fire. 148. when water supply is disconnected the external inženiertīkl one stage (between calculation nodes), the total supply of drinking water through the other stages should be no less than 70% of the calculated consumption, but the water supply to the worst places inventory-not less than 25% of the calculated consumption and water pressure in inženiertīkl must be at least 0.1 MPa. 149. If the trunk diameter greater than 800 mm and the flow is 80% of transit, may be fitted with tap pavadlīnij (if line diameter is smaller, the water installation must be pavadlīnij). If the width of the carriageway of the street is more than 20 m, may be fitted with a fire hydrant tap backup. 150. it is prohibited to combine the drinking water supply to the water supply system in which the water does not meet drinking water quality requirements. 151. it is prohibited to design highways through the cemetery, manufacturing and agricultural enterprise areas, animal cemetery, waste dumps, sanitary areas, filtration fields and agricultural lands, which are laistīt with purified in sewage effluent. The distance of the pollution sources mentioned should be: 151.1. designing the main dry soil, at least 10 m, if the diameter is less than 1000 mm, and at least 20 m, if the diameter is 1000 mm pipes and more; 151.2. wet soil will – at least 50 m regardless of the diameter of the tap. 152. the mainline: 152.1. latch or bolt for the disconnection of the repairable; 152.2. bleed air valves aqueduct; 152.3. emptying tap of the output. 153. the maximum length of the repairable stage is five kilometres mainline – if there are two highways, and three kilometres – if there is one line, and must not be more than five key hydrants and stop the water supply to those consumers that it is not permissible. 154. The aqueduct constructed with at least 0.001 inclination direction on output. The flat terrain of the slope may be reduced to 0.0005.155. Fire hydrants in the water in the outer inženiertīkl located to ensure the construction of each external fire from at least two hydrants, if fire hose length is up to 200 meters. Distances between hydrants shall be calculated by taking into account the total water consumption of fire, the fire hydrant type capacity and distances from hydrants to the upstream parts of the structure. If the distance from the hydrants to U1 or U2 ugunsnoturīb grade structures (in accordance with the degree of fire protection constructions et seq) is less than 10 metres, but from the ugunsnoturīb stage U3 structures – less than 30 meters, hydrants should not include the premises of external fire water supply calculation. 156. Hydrants shall be arranged so as to be available for fire-fighting equipment. If a fire hydrant shall be arranged outside the vehicle, they must not be more than 2.5 metres from the edge of the carriageway. Hydrant location denoted by norādītājzīm under applicable standard for fire and civil protection use safety marks and signālkrāsojum. 157. Amendement underground, surface and wall hydrants. Hydrant technical specifications must comply with the applicable requirements of the standards. 158. If the company (individual object) water supply external inženiertīkl, which provides for external fire-fighting, is elektroaizbīdņ, it is necessary to provide the manual opening of the fire hydrant location or from the premises where the 24-hour duty personnel. 159. If the undertaking (a single object) fire water supply external inženiertīkl are attached to the locality in the water for external inženiertīkl and provides a structure for external, internal and automatic fire (sprinklers), anti-foaming, lafet barrel or water cover water supply equipment, add locations provide automatically driven elektroaizbīdņ that opens after the system start up. 160. Brīvkrān radius of operation must be not more than 100 metres. 161. the pressure of each tap stage test before commissioning points works in the project, taking into account the pipe material, the manufacturer's technical regulations and work pressure. 162. Water are normally constructed below ground. The design of the tap permitted along the Earth's surface and on the pillars, as well as adding individual tunnels or tunnels with other communications permitted provided it has the appropriate justification. 163. The base type low water project in line with the bottom of the bearing capacity of existing loads and pipe manufacturer specifications. 164. the construction depth of Water (up to the bottom of the tube) is determined, taking into account the surface transport loads and intersection with other underground communications. It must be at least 0.5 m greater than the depth at which the ground temperature at 0 ° C is possible. 165. Tap the location shall be determined in accordance with the laws and regulations in the field of construction. 166. The building of several parallel highways, distances between their external plan surfaces designed depending on the diameter, bottom conditions and construction and repair capabilities to avoid potential leaching, if the accident in one tap. 167. The crossing of the railway and the road I and II category, tap into the apvalkcaurul. 168. The vertical distance from the bottom of the track and road pavement surface to apvalkcauruļ and tunnel up for depending on the soil conditions and transport loads, but they may not be: 168.1. less than 1.0 m – open trench construction; less than 1.5 m 168.2.-with caurspiešan or tunnel construction method; less than 2.5 m 168.3.-using the caurdūrum method. 169. If apvalkcaurul is entered into the well, the distance from the end of conduits in the plan or the distance to the outer wall of the well accepted: 169.1. crossing the rail, to 8 m from the side of the track, 5 m from the bottom of the embankment and 3 m from the edge of the road or on; 169.2. crossing the road-3 m from the edge of the road, at the bottom of the embankment and dug the edge or the road ditch. 170. Conduits diameter depends on the construction technique: 170.1. using the open method, conduits for 200 mm diameter is larger than the pipe diameter; 170.2. using closed conduits, the diameter depends on the length of the transition and the work of tube diameter according to the applicable et seq. 171. one apvalkcaurul can insert multiple tap and tap may be mounted with electricity cables and communication cables. 172. The above ground construction across the railway line through the apvalkcaurul will furnish a special estakād, considering this was 169 and 174 et seq. the requirements set out in paragraph. 173. Crossing the electrified railway, adopt the measures for the protection of the tubes against klaidstrāv. 174. Crossing the railways, roads and dams, provide for measures against flooding of the leaching and tap the emergency. Both sides of the rail to tap requires noslēgarmatūr. 175. The construction of the zemtek based on technical-economic calculations. Water-depth under water on the bottom to the top of the water must be at least 0.5 m, but the shipping way-not less than 1 m, taking into account the potential leaching of the seabed. Zemtek coast-stage elevation toward the horizon should not exceed 20 °. Both ends of the zemtek down the well with the final round of fixtures. Design of ground surface marks at 0.5 m wells accepted for higher above the maximum water level mark with 5% coverage. 176. Zemtek place in watercourses and navigable bodies in addition to the special signālzīm must be identified in accordance with the regulations established in the area. 177. Zemtek should be with two wires. If the location is inhabited by several ūdensgūtn, after coordination with the operating organization may be one zemtek. 178. the distance from zemtek to hidrotehniskaj structures (such as bridges, mol) is dependent on the diameter of the water, soil conditions, as well as from construction and repair capabilities and is consistent with the relevant operating structures. 179. When turning the fitting connection in the horizontal or vertical direction can not pick up the load calculation, need to be built or the anchored connections. 180. Oh and the camera part height design not less than 1.8 meters. Determining the size of the UK or the camera, the minimum distance to their inside surfaces must be: 180.1. the external surface of the pipe-0.3 m (if the pipe diameter is up to 400 mm), 0.5 m (diameter from 500 up to when 600 mm), 0.7 m (if the diameter is more than 600 mm); 180.2. from flange plane-0.3 m; 180.3. from the bottom to the well bottom-0.25 m (if the pipe diameter is up to 400 mm), 0.3 m (diameter of up to 500, if 600) mm, 0.35 m (if the diameter is more than 600 mm). 9. water storage tank 9.1 General instructions 181. Depending on water supplies following a task holds a stored water volume: regulating, fire fighting, emergency contact and filter cleaning. 182. the volume of water Regulating Wr (m3) water tanks (such as the underground reservoirs, ūdenstorņo) is calculated by the water supply and consumption, using the following formula: where (5) URQdn.max – peak consumption water consumption (m3/dn); Khr-maximum delivery to regulatory hold hour relative to average consumption per hour maximum daily consumption; Khr-water consumption coefficient of unevenness of the regulatory, calculated as maximum hours of consumption, the average consumption of maximum hour consumption a day. Maximum water consumption per hour water supply external inženiertīkl, which has no additional regulatory hold, accept the maximum consumption per hour. Maximum consumption per hour if water is taken from the tank and the regulator delivered water supply pumps, external inženiertīkl, which is an additional regulatory facilities shall be adopted for the pump station maximum productivity per hour. Where is the justification for regulating holds may be stored water uneven 24-hour consumption adjustment. 183. Fire water volume required to provide centralized water supply and open or closed water tanks according to the 18 and 19 et seq. 184. Fire extinguishing water must provide: 184.1. from water supply external fire inženiertīkl of fixed fire hydrants and hose systems et seq. of this 20, 21, 22, 23, 24, 25, 29, 30 and 32; fire from automatic 184.2. and automatic fixed fire-fighting systems (such as sprinklers, sprinklers, water, open cover, foam generators, lafetstobr), which does not have its own water reservoir or water tanks, discovered this 26 et seq., and paragraph 27. 185. Fire water tanks to the watertower provides one external and one internal fire deletion 10 minutes while providing maximum water consumption for other purposes. If there is a feasibility study, a stone water tower silos may keep the full amount of the fire water according to this paragraph of the 184 et seq. 186. If water is transported by one main water tanks: water volume, 186.1. providing water consumption during liquidation of emergency (paragraph 145 of this et seq) municipal needs of 70% of the average consumption per hour and production needs in accordance with the emergency timetable; 186.2. extra water volume of fire in accordance with this paragraph 184 et seq. 187. potable water tanks must provide fire and emergency water exchange in 48 hours. 9.2. The water tank, water reservoir, and 188. shall be provided with a watertower or joint delivery of supply-exhaust, overflow and tukšošan pipes, as well as the ventilation equipment and hatches to entry personnel and equipment transportation. 189. The high pressure fire extinguishing systems provide automatic spiedrezervuār watertower and disconnect, if exposed to fire pumps. 9.3. Water reservoirs and water towers 190. Must have at least two identical meaning water reservoirs. If you disconnect one of the reservoir, the other must be not less than 50% of the fire and emergency water volume. One reservoir may be to design, if it is not stored fire and emergency water volumes. 191. the Watertower in support structures may be deployed in tap farm service, if it does not cause environmental pollution. 192. lightning protection shall be provided to the Watertower. 9.4 fire into open water reservoirs and tanks fire water 193. volumes stored in closed reservoirs or open fire (also true) fire water tanks. 194. The fire-fighting reservoir and open water tank water volume calculation, taking into account the calculated consumption and fire duration of this deletion 21 et seq., 22, 23, 24, 25 and 32 points, as well as water evaporation in the summer and freezing in winter. 195. the documentation of the construction plans provide at least one open water tank or reservoir with two water inlets. 196. to increase service distance, from the closing of fire cisterns and water tanks to the open water sampling sites should be up to 200 metres long izzar aqueduct. Connecting water pipes diameter must ensure fires requires water supply. Connecting water pipes in noslēgarmatūr before the water sampling sites in the project, if necessary, in accordance with the calculation. And the location of fire hydrants around the construction project in the following manner: 196.1.200 metres from no further than roads with cover, if using autosūkņ; 196.2. no closer than 10 metres from the U1 or U2 ugunsnoturīb grade structures; 196.3. not less than 30 metres from the ugunsnoturīb stage U3 structures or combustible materials from public warehouses. 197. The closed fire-fighting reservoir or the open water tanks flooding down over the water from the water supply for fixed external inženiertīkl or with fire hoses, which calculates the length is up to 200 meters. 198. Fire cisterns and water tanks exposed do not need to install a bypass and the tukšošan River. 10. Electrical equipment, engineering control, automation and control systems in the water pump of 199. energy security category must match the pump station category in accordance with paragraph 125 of the et seq. Design of electrical equipment in rooms where possible gas concentrations, the electrical equipment must be sprādziendroš. 200. The technological process control, control and automation projects depending on the operating conditions, respecting the water structure operating requirements of the service. 201. ūdensgūtn level surface will provide control of difference were able and screens, as well as the water level measuring Chambers, bodies or watercourses. 202. The underground ūdensgūtn water meter must be made for the installation of each hole, the water level measurement by means of boreholes and savācējrezervuār, as well as the pressure at the pump. 203. Water abstraction boreholes to provide automatic pump shut off when the water level falls below the permissible. 204. ūdensgūtns will be provided by underground water mining drilling pump automatic control depending on the water level in the water tower (the underground reservoirs) or distance control from the control panel. 11. requirements engineering solutions and construction 11.1 General instructions 205. Water supply construction site plans and regional planning is carried out in accordance with the applicable laws and regulations. Water supply construction site layout marks and nearby water watercourses adopted not less than 0.5 m above the maximum flood level with 3% food security under the water uzplūdinājum and the maximum wave height of windy weather. 206. Strong effective toxic substances in the water storage structures shall be constructed in the following locations: 206.1. not less than 30 metres from buildings that have staff, as well as from watercourses and waterbodies; not less than 300 m 206.2. of living and public buildings (outside būvojekt), where the effective poisonous substances are stored in fixed tanks, and no closer than 100 m, if these substances are stored in balloons. 207. After checking with the State fire and rescue service at open water tanks shall be provided with the location of the water intake, providing also in winter. At the location of at least two firefighters parking, designing at least 3.5 m wide driveway and 12 x 12 m area with coverage. The driveway and the area of coverage, the quality must be such that it can move fire equipment. At the intake location no further than feet away from open water tanks on the top edge of the 0.8 m high protective barrier. 11.2. The water structure arrangement of water supply structures 208. location and fire safety solutions designed in accordance with the laws and regulations in the field of fire protection. 209. the structure of ugunsnoturīb Water level is determined by this annex table 15 et seq. 210. the water supply structures and accountability structure class defined by this annex table 15 et seq. 211. the different meanings of the production room and utility room blocks in one building, if it is not contrary to the technological processes, hygiene and fire safety requirements, as well as technical and economic considerations. Heating and ventilation of buildings and premises projects in accordance with this annex table 16 et seq. 212. The structure corrosion protection shall be determined in accordance with paragraph 7 of this et seq requirements. 213. the exit ladder of rooms go into the project at least 0.9 m wide and not about 45 ° horizontal (from facilities that are up to 12 m in length, about 60 °, not horizontal). Ladder to crew the landing project at least 0.7 m wide and not less than 60 ° from the horizontal. Individual transitions across the pipes and getting at some bolts and latch the ladder must be 0.5 m wide and not less than 60 ° or horizontal may be draining board ladder. 214. If open water tank edge above the floor or ground surface marks lower than 0.75 m, along the outer perimeter of the tank design additional fencing with a total height of not less than 0.75 m. 11.3. Construction and materials for water tanks external 215. structures must ensure hydraulic testing requirements. Drinking water tank external constructions designed so as to not contaminate the tank overflows and groundwater, as well as dust. 216. in closed tanks and wall covering the insulation depends on water temperature and operating mode. 217. potable water tanks in the inner reinforced concrete structures and concrete surfaces in contact with drinking water must comply with the requirements of category I (A) of the existing et seq. 218. Water tank design and durability testing of watertight integrity according to the in force et seq, when external wall surface temperature is positive. Structures with anti-corrosion cover for these checks to be carried out before the construction of the cover. Drinking water tanks in addition to check the tightness of all external structures. 219. no built up areas without road surfaces around the hatch down 0.5 m uk-wide aizsargapmal with a slope from here. 11.4. Structural corrosion protection 220. Civil protection against corrosion made under this paragraph 7, et seq. 221. The design and construction of underground klaidstrāv of surface area, the expected construction of electrochemical corrosion protection. 11.5. Heating and ventilation 222. Water Works indoors air temperature shall be taken after this annex table 16 et seq. If the production premises is the service staff, air temperature must be not less than 16 ° c. 223. the required air exchange in rooms of the production is calculated depending on the quantity of harmful substances that are released from overt tanks, equipment, fixtures and communications, or adopted after this annex table 16 et seq. 224. dosing of chlorine in the air space of continuous ventilation through ventilation into riser height shall be not less than 2 m above the roof of the highest building, located on a 15 m radius. 225. If the room where the iron chloride solution, in General, provide local ventilation air from the bilge any part of which is iron chloride leaching from the container.
In place of the Minister of Economics, Minister of health of the Ministry of economy Guntis Belēvič the annex submitted by the Latvian et seq of LBN 222-15 "water supply structures" (approved by Cabinet of Ministers of 30 June 2015 by Regulation No. 326) table water consumption of one resident a day table 1 no PO box The degree of labiekārtotīb of buildings one resident water consumption per day (on average), l/dn 1. An apartment building with a centralized water supply, sewerage and the hot water supply from 150 to 200 2. Mansion with centralized water supply, sewerage and hot water supply (with bath and shower) from 100 to 300 3. Buildings with centralized water supply and sewerage (without the bath and shower) from 50 to 100 4. Building with brīvkrān outside the building and local sewage from 30 to 50 water dispersion coefficient depending on the population table 2 factor for population up to 100 150 200 300 500 750 1000 1500 2500 max 4.5 4 3.5 3 2.5 2.2 β 2-β coefficient of 0.01 0.01 0.02 0.03 0.05 0.07 0.1 0.1 0.1 1.8 1.6 min population 4000 6000 10000 20000 50000 100000 300000 1000000 and more max 1.5 1.4 1.3 1.2 1.15 1.1 1.05 β 1 β min 0.2 0.25 0.4 0.5 0.6 0.7 0.85 1 note. The factor β shall be adopted depending on the total population of the region or locality, area water supply,-depending on the number of population in each area. Water consumption for irrigation water use table 3-way unit water consumption, l/m2 1. Street and square in the washing machine washing 1 ÷ 1.2 1.5 times 2. Street and mechanized irrigation area 1 watering time 0.3 ÷ 0.4 3. Street and area watering with a hose 1 watering time 0.4 ÷ 0.5 4. Urban greenery watering watering time 1 3 ÷ 4 5. Lawn and flowers deep watering watering time 1 4 ÷ 6 6. watering greenhouses under 1 watering time (once a day) under 15 7. the frames watering 1 watering time (once a day) 6 8. Planting a backyard garden watering: roots gardens 8.1 8.2. watering fruit gardens 1 time (once a day) ÷ 3 ÷ 15 10 15 notes. 1. If there is no data about regional planning, assume that the water consumption for watering (watering season) a day on average are 50-90 l/dn per head depending on the productivity of ūdensgūtn, labiekārtotīb grades and other local conditions. 2. Assume that the watering frequency is 1-2 times a day. External fire-fighting water consumption in urban areas table 4 No. PO box Population (thousands) locality at the same time, the number of possible fire-fighting water consumption (l/s) locality 1. Up to 1 1 10 2. Over 1 to 3 1 15 3. Over 3 to 5 1 20 4. Over 5 to 10 1 25 5. Over 10 to 25 2 30 6. Over 25 to 50 2 35 7. Over 50 to 75 2 40 8. Over 75 to 100 2 45 9. Over 100 to 200 3 50 10. Over 200 to 300 3 60 11. Over 300 to 400 3 70 12. Over 400 to 500 3 80 13. Over 500 to 600 4 90 14. Over 600 to 700 4 100 15. Over 700 to 800 4 110 16. Over 800 4 120 notes. 1. If the fire water consumption locality object for external fire is greater than specified in this table provide additional supply of water, in order to ensure the required water consumption. 2. where is the area of water supply, water consumption for external fire and possible fire simultaneously in each area determined in accordance with the population of it. 3. If multiple residences is a common River, while the number of possible fire is determined according to the total number of the population in the urban areas. External fire-fighting water consumption for residential and public (including agricultural, industrial, warehouse management and domestic) buildings table 5 no PO box Number of floors of the building external fire-fighting water consumption (l/s) one fire deletion regardless of the degree of ugunsnoturīb of the building if the building is up to 1000 būvapjom 1001 to 5000 m3 of 5001 to 25000 m3 m3 of up to 50000 m3 of 50001 from 25001 to 100000 m3 over 100000 m3 1. 2 10 15 20 25 30 35 2 up **. From 3 to 10 15 20 25 30 35 40 3. Over 10-30 35 40 45 notes. 1. Outside built-up areas in rural areas outside of the fire water consumption 5 l/s ** 2. Outside built-up areas in rural areas outside of the fire water consumption is 10 l/s. external fire-fighting water consumption for production and warehouse buildings or structures table 6 no PO box Construction ugunsnoturīb Ugunsslodz's degree of density (MJ/m2) external fire-fighting water consumption one fire deletion (l/s) if the building or premises is up to 3000 m3 būvapjom over 3000 to 10000 10000 to 25000 m3 m3 above 25000 to 50000 m3 above 50000 to 100000 m3 above above 100000 m3 1. U1 > 1200 15 20 25 30 35 40 2. U1 600-1200 10 15 20 25 30 35 3. U1 1200 20 25 30 35 40 50 5. U2 600-1200 15 20 25 30 35 40 6. U3 > 1200 20 25 30 35 40 50 7. U3 600-1200 15 20 25 30 35 40 8. U3 14 m 60 120 3.2. Ridge height 14 m 50 100 4