Materials and Construction: A Theoretical and Practical Treatise on the Strains, Designing, and Erection of Works of ConstructionC. Lockwood and Company, 1881 - 249 páginas |
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Página 9
... latter ratio has been the guide almost universally . In some substances , however , it must be remarked the range of elasticity is so extremely small as not to be ob- servable , as in some kinds of stone , brick , & c . , and the ...
... latter ratio has been the guide almost universally . In some substances , however , it must be remarked the range of elasticity is so extremely small as not to be ob- servable , as in some kinds of stone , brick , & c . , and the ...
Página 25
... latter by the first method is neglected in the calcu- lation . Determining the centre of gravity of the section as before , we have , taking the upper boundary as the axis of moments- 15 x1 × = 7 · 500 6 ×× 13.750 2X1X25.875 Fig . 13 ...
... latter by the first method is neglected in the calcu- lation . Determining the centre of gravity of the section as before , we have , taking the upper boundary as the axis of moments- 15 x1 × = 7 · 500 6 ×× 13.750 2X1X25.875 Fig . 13 ...
Página 28
... latter 18 × × 20 = 480 inch tons . I will now collect together the three formula for deter- mining the moments of resistance as ascertained above . For a form of section symmetrical in respect to the neutral axis , such as that shown in ...
... latter 18 × × 20 = 480 inch tons . I will now collect together the three formula for deter- mining the moments of resistance as ascertained above . For a form of section symmetrical in respect to the neutral axis , such as that shown in ...
Página 34
... latter minus in sign ; the distance at which W acts about D is 7 . y , and the distance at which R , the reaction , acts about D is 7 ; hence the moments are respectively- -Rx and W - ( 1 - y ) or -R1 = W ( 1 — y ) W ( 1 − y ) ; 7 ...
... latter minus in sign ; the distance at which W acts about D is 7 . y , and the distance at which R , the reaction , acts about D is 7 ; hence the moments are respectively- -Rx and W - ( 1 - y ) or -R1 = W ( 1 — y ) W ( 1 − y ) ; 7 ...
Página 55
... latter may be regarded as the elastic resist- ance to shearing stress . The last figures give , for the resistance of a sectional square inch of the material to transverse breaking , 7,596 inch lbs . The resistance of cast iron to ...
... latter may be regarded as the elastic resist- ance to shearing stress . The last figures give , for the resistance of a sectional square inch of the material to transverse breaking , 7,596 inch lbs . The resistance of cast iron to ...
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Términos y frases comunes
abutment acting angle irons angle of repose arch beam bolts bottom flange bracing bridge calculated carried cast iron centre of gravity cloth boards column complete the parallelogram compression cross girders crown cubic foot curve deflection depth determined diagonal diameter direction distance distributing girder Edition Engineer equal factor of safety feet force formula friction hence Illustrations inch thick inclined bar joint length lineal foot load main girder masonry material maximum strain modulus of elasticity molecules multiplied neutral axis numerous parallelogram of forces pier plates practical pressure radius ratio right angles rivet area rivet holes rivets road girder SCOTT BURN sectional area sectional square inch shearing shearing strain side span strength stress structure surface taken tensile tension timber tion top flange Treatise triangle voussoir weight wrought iron
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