The Ontario Building Code | Copper Tube

7.2.7.4. copper Tube

(1) copper tube in a plumbing system shall,

(a) be certified to ASTM B88, "Seamless copper Water tube", or

(b) comply with ASTM B306, "copper Drainage tube (DWV)".

(2) The use of copper tube shall conform to Table 7.2.7.4.

Table 7.2.7.4.
Permitted Use of copper Tube and pipe

Forming Part of Sentence 7.2.7.4.(2)

Item	Column 1	Column 2	Column 3	Column 4	Column 5	Column 6	Column 7	Column 8
	Type of copper Tube or pipe	water Distribution System		building Sewer	drainage System		venting ="http://thehandyforce.com/interior/bathroom-renovations/" title ="Toronto Bathroom renovation inspiration">venting System
		Under ground	Above ground		Under ground	Above ground	Under ground	Above ground
1.	K & L hard	N	P	P	P	P	P	P
2.	K & L soft	P	P	N	N	N	N	N
3.	M hard	N	P	N	N	P	N	P
4.	M soft	N	N	N	N	N	N	N
5.	DWV	N	N	N	N	P	N	P

Notes to Table 7.2.7.4.:

P — Permitted

N — Not Permitted

(3) copper tube used in a plumbing applianceshall conform to,

(a) ASTM B88, "Seamless copper Water tube", or

(b) ASTM B68 / B68M, "Seamless copper Tube, Bright Annealed".

(4) Type K or L copper tube shall be used for the potablewater side of a heat exchanger in a pre-engineered wastewater heat recovery system.