phase 2 plumbing Flashcards
(25 cards)
what is the maximum waste pipe size for a bath and what is the maximum run length ?
50 mm for 4m
what is the air gap size for AUK2
25
what is the maximum joist notching depth for a 3m joist?
1/8 of 3
what is the maximum joist notching length for a 3m joist?
3x0.25=0.75
3x0.07=0.21
=0.54
how close after a guttering fitting do you need a clip
150mm
what is number 3 on this diagram
safety relief valve
name one disadvantage of a one pipe system.
the last rad on the system will be cool
what do we call it when gas turns into a liquid
condensation
how do we calculate newtons
mass x acceleration
what size is half round guttering pipe
112mm
what is the building regulation that covers macerators
G4
what building regulation covers adding to hot water storage systems
G3
What size fuse would you use for a domestic shower of 2100kw
13 amp
what size primary pipe would be required for a gravity system
28mm
what is the correcy positioning for the circulator
after the vent and cold feed
what type of fittings do you use on PVC-U
snap in
if you half the diameter of a gas pipe what happens to the pressure
it doubles
whagt would happen if the pressure was too high in a central heating system
the PRV will activate and push it through the tundish
what is equivalent to 1 watt
1 joule per second
where should we insulate pipework
in an external wall
what is a advantage of using PVC-u guttering
it has less friction
its cheaper
its lighter
easy to get
what is the disadvantage of PVCu
it can degrade with some paints and solvents
underfloor heating manifold
which regulation covers sanitation pipework
building reg part G
