Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 254
234 TAX NOSTRAND'S ENGINEERING MAGAZINE. sesk the longitudinal effect, let one of the In Fig. 1 let components be taken in that direction A B = the length of the rafter. D = A E = the rise and call it L1. The other component, ! = Eli = the run of the rafter, or its hori- to produce no longitudinal… … Hence we immediately have sin3 0 (2.-) L ' = H sinfl =nP tang 6 sin 0 = n P cos 0 It is a principle of statics that the N' =H cos0 = n Ptang 0 cos 0 =n P sin 0 ((3.) algebraic sum of the vertical components The latter component N1 produces only of all the forces in a system in equilibri- um is…
Engineering
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