28.6
ATA-3 introduced S.M.A.R.T.
Using the ideal gas law equation P1V1 = P2V2, with initial pressure (P1) = 10 psig, initial volume (V1) = 30 ft^3, final volume (V2) = 25 ft^3, we can solve for the final pressure (P2). (10 psig * 30 ft^3) / 25 ft^3 = 12 psig, so the new pressure would be 12 psig.
Ata Scanlan is 6' 3".
psia to psig psig - 15 15 - 15= 0 psig
psia=psig+atmospheric pressure where, atmospheric pressure = 14.7psi therefore psig=psia-atmospheric pressure psig=100-14.7 psig=85.3psig
1 bar = 14.5 psig so 3.5 bar = 51 psig (what your significate figures)
70 psig
The method is the same, but the formula differs depending on whether you want it in meters or feet. The easy method in feet is to add .3 atmospheres (ata) every 10 feet (or every 3 meters) and then add a surface atmosphere, so 30 feet would be: [(.3 x 3=.9) +1] = 1.9 ata The simple formula for feet is: (Depth + 33)/33 For meters it is: (Depth +10)/10 One atm is defined as 101.325 kPa or 14.7 psig. A somewhat newer unit has been introduced to replace atm, particularly when working in metric units. The "bar" is defined as exactly 100 kPa or 14.5 psig. One bar is equivalent to 32.81 feet of sea water.
SATA is ATA, but there are many ATA. SATA is an acronym for Serial AT Attachment, AT being the successor to the PC standard of desktop computers. There are many ATA standards, lots, but short answer is they are outdated Paralel, so we coined a new term to cover all the old ATA devices: PATA.
psig
should be 2 to 3 psig
You asked for black iron pipe ratings but below is an explanation for CARBON steel, which is much stronger. Iron and steel are not the same thing. The working pressure depends on the size of the pipe. These pressures are rated up to 400 degrees F. THESE RATINGS ARE FOR *CARBON STEEL*NOT BLACK IRON! Again, these pressures are maximum working pressures, not burst pressures. 1/4" 188psig 3/8" 203 psig 1/2" 214 psig 3/4" 217 psig 1" 226 psig 1-1/4" 229 psig 1-1/2" 231 psig 2" 230 psig The full table can be found here: http://www.engineeringtoolbox.com/astm-steel-pipes-working-pressure-d_775.html