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49 Cards in this Set
- Front
- Back
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0.433
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= PSI in 1 foot of water
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0.036
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= PSI in 1" head of water
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7.5%
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= Water expands upon freezing
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4⁰C
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= Greatest density of water
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1
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= Relative density of water & air
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0.076
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= Density of air (lbs/ft3)
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0.491
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= PSI Hg head of water
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13.6
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= Relative density of Hg
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14.7
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= PSI of atmospheric pressure
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101
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= Atmospheric pressure in kPa
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2.31'
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= Height of water column equals 1 PSI
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27.7"
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= Height of water column equals 1 PSI
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29.92"
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= Height of Hg under atmospheric pressure
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760
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= Height of Hg (mm) under atmospheric pressure
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6.24
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= Imperial gallons per ft3 of water
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62.4
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= Density of water in lbs/ft3
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10 lbs
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= Weight of 1 imperial gallon
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0.833
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= Imperial gallons of water in 1 U.S. gallon
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1.2
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= U.S. gallons per 1 Imp. gallon
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1:50
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= Scale of residential drawings
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1:100
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= Scale of commercial drawings
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970
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= Btu/lbs required to vaporize H2O
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144
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= Btu/lbs is removed to turn H2O to ice
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2257
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= kJ/kg of latent heat to vaporize H2O
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335
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=kJ/kg of latent removed to turn H2O to ice
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0.24
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= Specific heat capacity of air (Btu/lbs - ⁰F)
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0.5
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= Specific heat capacity of ice (Btu/lbs - ⁰F)
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2
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= Specific heat capacity of ice (kJ/kg - ⁰C)
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1700 x
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= Water expands when turning into steam
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4.2
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= kJ required to raise 1 kg of water by 1⁰C
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212⁰F
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= Boiling temp of water in ⁰F
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100⁰C
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= Boiling temp of water in ⁰C
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39⁰F
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= Waters greatest density in ⁰F
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32⁰F
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= Freezing temp of water in ⁰F
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0⁰C
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= Freezing temp of water in ⁰C
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250⁰F
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= Max temp of low temp hot water boiler
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15 PSI
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= Max working pressure in low pressure boiler
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15 PSIG
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= Max pressure in low pressure boiler
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30 PSI
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= Max pressure of cast iron boiler
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1728
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= Cubic inches per cubic ft
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2.20 lbs
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= Weight of 1kg
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3.14
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= ∏ (Pi)
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22/7
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= Approx fraction of Pi
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406.912
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= Max theoretical depth of shallow well
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150 Btu/E.D.R
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= 1 E.D.R of water
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240 Btu/E.D.R
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= 1 E.D.R of steam
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(⁰F - 32) ÷ 1.8
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= Temp conversion from ⁰F to ⁰C
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(1.8 x ⁰C) + 32
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= Temp conversion from ⁰C to ⁰F
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30⁰
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= Angle of isometric drawings
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