<s>
A	O
plumbing	B-Application
drawing	I-Application
,	O
a	O
type	O
of	O
technical	B-Application
drawing	I-Application
,	O
shows	O
the	O
system	O
of	O
piping	O
for	O
fresh	O
water	O
going	O
into	O
the	O
building	O
and	O
waste	O
going	O
out	O
,	O
both	O
solid	O
and	O
liquid	O
.	O
</s>
<s>
Mainly	O
plumbing	B-Application
drawing	I-Application
consist	O
of	O
water	O
supply	O
system	O
drawings	O
,	O
drainage	O
system	O
drawings	O
,	O
irrigation	O
system	O
drawings	O
,	O
storm	O
water	O
system	O
drawings	O
.	O
</s>
