Pressures

80 psi or 551 kpa - A pressure regulator must be installed if the local water service pressure is above ____

14.4 kpa - minimum earth load support of septic tank cover

15 psi (or 103 kpa)- this refers to the minimum water pressure, otherwise a tank or a booster pump must be installed
1033 kpa - Each pressure relief valve shall be an approved automatic type with drain and set at a pressure not more than _____. 

17225 kpa - minimum compressive strength of brick or blocks in seepage pits

34.5 kpa - gauge pressure to be maintained in air test; enought to balance a mercury 254 mm in height

344.5 kpa - of air pressure may be substituted for the water test

15 psi - minimum pressure at the highest fixture containing Flushometer Valves

8 psi - minimum pressure at the highest fixture containing flush tank

2500 psi - The arch or dome of seepage pit shall be an approved type one or two piece reinforced concrete slab of ____ minimum compressive strength.