Formwork for Concrete Structures by R.L.Peurifoy and G.D- By EasyEngineering.net

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Abbreviations and Symbols
PCA Portland Cement Association
psf pressure or weight, lb per sq ft
psi stress, lb per sq in.
R rate of filling forms, ft per hour
S section modulus, in. 3
S4S lumber that is surfaced on all four sides
sq ft square feet
sq in. square inches
T temperature, degrees Fahrenheit
V total external shear force on a beam, lb
v velocity, ft per sec
W total load uniformly distributed along a beam, lb
w uniformly distributed load, lb per lin ft
⊥ denotes a perpendicular direction
// denotes a parallel direction
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