815 KAR 20:071. Storage and installation of Schedule 40, ABS and PVC plastic pipe and fittings

Link to law: http://www.lrc.ky.gov/kar/815/020/071.htm
Published: 2015

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      815 KAR 20:071.

Storage and installation of Schedule 40, ABS and PVC plastic pipe and fittings.

 

      RELATES TO: KRS

Chapter 318

      STATUTORY AUTHORITY:

KRS 318.130

      NECESSITY, FUNCTION,

AND CONFORMITY: The office is directed by KRS 318.130 through the State Plumbing

Code Committee to adopt and put into effect a State Plumbing Code. This

administrative regulation relates to the method needed for storage, handling

and installation of schedule 40, ABS and PVC plastic pipe and fittings. This

administrative regulation is being amended because new fittings are now available

which allows for expansion when connecting plastic pipe to metal as well as a

new means of connecting different kinds of plastic pipe.

 

      Section 1. Storage.

(1) Pipe. Pipe shall remain in lifts until ready for use. Lifts shall not be

stacked more than three (3) high and shall always be stacked wood-on-wood.

Loose pipe shall be stored in racks with a minimum support space of three (3)

feet. Pipe shall be shaded but not directly covered when stored outside in high

ambient temperatures to provide for free circulation of air and reduce the heat

buildup due to direct sunlight exposure.

      (2) Fittings.

Fittings shall be stored in their original cartons to be kept free of dirt and

to reduce the possibility of damage. If possible, fittings shall be stored

indoors.

      (3) Solvent cement

and primers. Solvent cement and primers shall not be exposed to ignition,

sparks, open flames or heat during storage and shall not be used beyond their

marked shelf life.

 

      Section 2. Handling.

Care shall be exercised to avoid rough handling of pipe and fittings. They

shall not be dragged over sharp projections, dropped or have heavy objects

dropped on them. Pipe ends shall be inspected for cracks in the event of abuse

prior to installation. (If transported by truck or trailer, piping shall be reasonably

supported.)

 

      Section 3.

Installation. (1) Underneath concrete floors. Pipe and fittings shall be laid

on stable earth conditions and have four (4) inches of grillage on its bottom,

top and sides. If ground is unstable, it shall be removed and the excavation

filled with grillage to the underneath side of the piping. Soil or waste pipe

shall not be placed in a concrete slab except those pipes that pass vertically

through it.

      (2) Above concrete

floors. Horizontal piping shall be properly aligned and installed without

strain. Piping shall not be bent or pulled in position either before or after

solvent welds have been made. It shall be supported at intervals not to exceed

four (4) feet and at the end of the branches and at the change of direction and

shall be so installed as to permit freedom of movement. Vertical piping shall

be supported at their bases and all upward movement shall not be restricted.

Closet flanges shall be securely fastened to the floor through which it passes.

 

      Section 4. Hangers.

Hangers and straps shall be at least one (1) inch wide and shall not compress,

distort, cut or abrade the piping to allow free movement at all times.

 

      Section 5. Making

Solvent Cement Joints. (1)(a) Cement shall not be thinned. Cement that has

thickened shall be discarded. Cement shall not be used beyond its shelf life

and shall not be subject to temperatures below thirty (30) degrees Fahrenheit.

      (b) Installers shall

avoid prolonged breathing of vapors. Prolonged contact with skin is harmful.

Install only with adequate ventilation. Avoid contact with eyes and skin.

Solvents are also flammable.

      (2) Socket fit. ABS

and PVC fittings are manufactured to a close tolerance. Joints shall be an interference

fit between pipe and fittings. Additional cement shall not be permitted for the

correction of loosely fitted joints.

      (3) Joining

techniques. Piping shall be cut square with a saw or pipe cutter designed

especially for plastic pipe. Pipe and fittings shall be protected from serrated

holding devices or abrasions.

      (a) Burrs shall be

removed from both inside and outside of the pipe. Dust, dirt and moisture shall

be removed from the surfaces that shall be cemented.

      (b) Solvent chemical

cleaner recommended by the company whose product is being installed shall be

applied inside the fitting and on the outside of the piping shall be joined.

      (c) A paint brush

shall be used to apply the solvent cement in a moderate, even coating in the

fitting socket as well as covering the pipe on the joining surfaces.

      (d) Joints shall be

assembled as quickly as possible before the cement dries. Insert the piping

into the fitting socket turning the pipe slightly to ensure even distribution

to the cement. Hold the piping in a firm position so it does not "back

out" of the joint.

      (e) Remove excess

solvent cement from the exterior of the joint with a clean dry cloth. The joint

shall not be handled for a two (2) minute period. A fifteen (15) minute period

shall be allowed for the joint to develop hanging strength.

      (f) A Cemented pipe

joint shall not be made in conditions of excessive moisture (ninety (90)

percent humidity level) or when the temperature is below forty (40) degrees or

above ninety (90) degrees Fahrenheit.

 

      Section 6.

Commingling of Plastic Pipe. Plastic pipe shall not be commingled except

through the use of male and female adapters or other transition fittings

approved by administrative regulation of the office.

 

      Section 7. Mixing of

Plastic and Metal Piping. Plastic and metal piping shall discharge into one

another by the use of proper fittings and adapters.

 

      Section 8. Thermal

Expansion. Each plumbing installation shall be engineered and designed giving

due consideration to the expansion characteristics of the material. Expansion

tables for both PVC and ABS schedule 40 plastic piping are as follows:



PVC-DWV

TYPE 1 THERMAL EXPANSION TABLE



 





Chart

Shows Length Change in Inches

vs.

Degrees Temperature Change



 





Lg.Ft.





40°F





50°F





60°F





70°F





80°F





90°F





100°F







20





278





.348





.418





.487





.557





.626





.696







40





.557





.696





.835





.974





1.114





1.235





1.392







60





.835





1.044





1.253





1.462





1.670





1.879





2.088







80





1.134





1.392





1.670





1.949





2.227





2.506





2.784







100





.392





1.740





2.088





2.436





2.784





3.132





3.480

























 



ABS-DWV

TYPE 1 THERMAL EXPANSION TABLE



 





Chart

Shows Length Change in Inches

vs.

Degrees Temperature Change



 





Lg.Ft.





40°F





50°F





60°F





70°F





80°F





90°F





100°F







20





0.536





0.670





0.80





0.938





1.072





1.206





1.340







40





1.070





1.340





1.610





1.880





2.050





2.420





2.690







60





1.609





2.010





2.410





2.820





3.220





3.620





4.020







80





2.143





2.680





3.220





3.760





4.290





4.830





5.360







100





2.680





3.350





4.020





4.700





5.360





6.030





6.700

























      (7 Ky.R. 525; 767;

eff. 3-4-81; Am. 16 Ky.R. 2764; 17 Ky.R. 1098; eff. 8-22-90; 19 Ky.R. 1190;

1555; eff. 1-4-93; TAm eff. 8-9-2007; 35 Ky.R. 2591; 36 Ky.R. 87; eff. 7-29-2009.)