The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 49
e moment can be written in the form x — [^pdx-\-pd {x — d) ^ ^pd X [x — 2d)] — ^pdz.^ For the beam, Fig. {a), the moment \s R X x — \2pd X {x — d)] — ^ps,The quantities within the brackets in the two expressions are equal ; they are the moment aboutm of the portion of the load upon the length AD.… … Fig. 59. ANALYSIS OF ROOF-TRUSSES. 33 CHAPTER III. ANALYSIS OF ROOF-TRUSSES. LOADS AND REACTIONS. 51. Dead Load.—The dead or fixed load supported by a roof-truss is made up of: theweight of the truss itself ; the roof, including roof-covering, sheeting, rafters, and purlins ; andsometimes the…
