(1)
Caulked lead drainage joints shall not be used except for cast-iron pipe in a drainage system or venting system, or between such pipe and
(a)
other ferrous pipe,
(b)
brass and copper pipe,
(c)
a caulking ferrule, or
(d)
(2)
Every caulked lead drainage joint shall be firmly packed with oakum and tightly caulked with lead to a depth of not less than 25 mm.
(3)
No paint, varnish or other coating shall be applied on the lead until after the joint has been tested.
(4)
A length of hub and spigot pipe and pipe fittings in a drainage system shall be installed with the hub at the upstream end.