hi there.im doing a course and need to know the answer to this question.i have read through my books but cant for the life of me find the answer,i wonder if anyone can give me a hand please.
if fitting a 40mm pvc waste pipe it should have a support pipe clip every:
a) 0.600
b) 0.900
c)1.100
d)0.800
if anyone has the answer to this it would be much appreciated if you could pass it on to me please.