· Cast
iron – no corrosive waste/
· Reinforced
concrete
· Mild
steel tube – screwed and flanged
· Copper
– light weight easy to install
· Brass
· Wrought
iron- screwed and flanged
· Asbestos
cement pipe – above ground
· Lead
– where small size and lengthy more at urinals/ cost is high
· Polythene
and poly vinyl chloride
· GRP
–glass reinforced plastic
· MDPE
– medium density polyethylene pipe
· Acrylonitrile
butadiene styrene
· Ductile
iron pipe
Standard
as per code
· Cast
iron, vertically cast or centrifugally (spun) cast ( see IS :1.536-1976$ and IS
: 1537-1976s;
· Steel
(lined or coated with bitumen or bituminous composition and out-coated with
cement concrete or mortar, where necessary) (IS: 1916-196311 and IS:
3589196611);
· Reinforced
concrete (IS : 458-1971** )
· Prestressed
concrete (IS : 784-1978* );
· Mild
steel tubes or tubular (galvanized) [ see IS : 1239 ( Part 1 )-19797 1;
· Copper
(IS : 1545-19823 );
· Brass
(IS : 407-19815 );
· Wrought
iron;
· Asbestos
cement (IS : 1626196011 and IS : 1592-1980);
· Lead
[IS : 404 ( Part 1 )-1977- 1
· Polyethylene
(IS : 3076-1968fi ) and ( IS : 4984-1978); and
· Un
plasticized PVC pipes (IS : 4985-1981 ).
In
choosing the material for piping and fittings, account shall be taken of the
character of the water to be conveyed through it, the nature of the ground in
which the piping is to be laid and the relative cost as compared with its
useful life. The material shall be resistant to corrosion, both inside and
outside or shall be suitably protected against corrosion.
Copper
piping may be used particularly in hot water installations provided water is
not capable of dissolving an undue amount of copper. Asbestos cement pipes may
be used; however, adequate should be taken while laying backfilling (IS :
6530-1972)Mild steel tubes used in plumbing system shall be of medium class
Conforming to IS: 1239 (Part 1)-1979
Polythene
pipes and PVC pipes should not be laid on hot surfaces or in too close a
proximity of hot water pipes. Care should also be taken to avoid locations where
they are likely to be exposed to atmospheres charged with coal gas [ see IS :
7634 ( Part 2 )-1975t and IS : 7634 ( Part 3 )-1975f 1.
