Testing
Water distribution
125psi; 15min
Trap to vent
Trap Arm
39.2 degrees
water most dense
ABS maximum res. story ht.
10
Pie x Diameter
Circumference
Gas low pressure
3psi; 10mins
Horizontal waste pipe
Drain
weight of gallon of water
8.33 lbs
Valve protecting water heaters from implosion
Vacuum relief valve
Pressure @ base
H' x .434 = psig
DWV (Air)
5psi; 15min
Vertical DWV pipe
stack
7.5 gallons
Cubic ft. capacity
Two fixtures with integral traps
Water closets & urinals
D (squared inches) x L (feet) x .0408 =
Capacity of a pipe or cylinder in gallons
DWV underground (Hydro)
10ft Head
Cannot drain it's contents by force of gravity
Building sub drain
231 inches cubed
one gallon
Depth for pouring lead
1 inch
Force
pie x r squared x H' x .434
Approved method of testing besides water, air, peppermint
Smoke
Downstream from Building Drain
Building Sewer
T&P Relief
210 degrees
Max. lav supply length
30 inches
Square inches in a square foot
144 in2