Pounds per square foot

Pound per square foot kilogram per square meter 4.882 43... 

Ba.lla.sted. A ballasted roof assembly consists of a membrane or membrane and substrate material (insulation, sHp sheet, etc) loosely laid over a deck with the assembly held in place using ballast. A minimum ballast weight of 48.9 kg/m or 10 pounds per square foot (PSF) is used. The ballast can consist of smooth rounded stone, cmshed stone (a separator sheet must be used between the cmshed stone and the membrane), or pavers (both standard and lightweight). Both stone and pavers come in a wide variety of colors. The membrane is affixed to the building only at the deck perimeter (roof edge) and at various penetrations. Wall and penetration flashings are typically fuUy adhered and sealed to prevent water entry into the roof assembly. The maximum slope a ballasted system should be installed over is 16.7 cm/m. 

Atmospheres Pounds per square foot 2116.3 Centimeters Angstrom units 1 X 10 ... 

Barrels per day Gallons per minute 0.02917 Centimeters of mercury at 0 C. Pounds per square foot 27.845... 

Grams per square centimeter Pounds per square foot 2.0482... 

Pounds per square foot Kilograms per square meter 4.882... 

Atmospheric Tanks The term atmospheric tank as used here applies to any tank that is designed to be used within plus or minus several hundred pascals (a few pounds per square foot) of atmospheric pressure. It may be either open to the atmosphere or enclosed. Minimum cost is usually obtained with a vertical cylindrical shape and a relatively flat bottom at ground level. 

Pressure Tanks Vertical cylindrical tanks constructed with domed or coned roofs, which operate at pressures above several hundred pascals (a few pounds per square foot) but which are still relatively close to atmospheric pressure, can be built according to API Standard 650. The pressure force acting against the roof is transmitted to the shell, which may have sufficient weight to resist it. If not, the uplift will act on the tank bottom. The strength of the bottom, however, is limited, and if it is not sufficient, an anchor ring or a heavy... 

The term atmospheric tank as used here applies to any tank that is designed to be used within plus or minus a few pounds per square foot (a few tenths of... 

Milligrams per square decimetre per day 0-007 48 pounds per square foot per year (lb ft y )... 

Pounds per square foot Atmospheres 4.725 x 10-4 Tons (long) Kilograms 1016... 

PRESSURE. If a body of fluid is at rest, the forces are in equilibrium or the fluid is in static equilibrium. The types of force that may aci on a body are shear or tangential force, tensile force, and compressive force. Fluids move continuously under the action of shear or tangential forces. Thus, a fluid at rest is free in each part from shear forces one fluid layer does not slide relative to an adjacent layer. Fluids can be subjected to a compressive stress, which is commonly called pressure. The term may be defined as force per unit area. The pressure units may be dynes per square centimeter, pounds per square foot, torr. mega-Pascals, etc. Atmospheric pressure is the force acting upon a unit area due to the weight of the atmosphere. Gage pressure is the difference between the pressure of the fluid measured (at some point) and atmospheric pressure. Absolute pressure, which can be measured by a mercury barometer, is the sum of gage pressure plus atmospheric pressure. 

Where the movement is vertically upward through a distance of 1 foot it has been found by experiment that the rate for a fine sand was 2.37 pounds per square foot per day of twenty-four hours when the lift was increased to 2 feet the movement became 2.07 pounds at 3 feet it was 1.23 pounds, and at 4 feet only 0.91 potmd per square foot. A... 

Mass flow density Kilogram per sq meter p. h Pound per square foot p. min... 

Low-alloys steels are used for wellbore tubulars. Corrosion limits for jointed tubing is arbitrarily set at <0.05 pounds per square foot of tubing surface area which represents a loss of 1/1000 of an inch in wall thickness. Pitting deeper than 0.015 inch (0.381 mm) is not acceptable. 

The belt loading, typically in pounds per square foot (kilograms per square meter). 

The units for K will depend on the units prescribed for the other terms. Thus, in the English system of units, if the pressure change is in psf (pounds per square foot), the distance is in feet, and the viscosity value is in Bvu s (British viscosity units of pounds/ft-sec), with the velocity in ft/sec, then the dimensions of K will be ft /sec. (It may be noted that the viscosity in poises has the dimensions of grams/cm-sec, and the viscosity in centipoises has the dimensions of centigrams/cm-sec. Accordingly, to convert a viscosity value in centipoises, multiply the value by 6.72 x 10 to yield the viscosity value in Bvu s.)... 

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