This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ... the span, equate it to the deflection of the cable and show that the value of f thus found is less than 0.70. Art. 54. Temperature Stresses In Trusses. The effect of changes of temperature upon the cable has been discussed in Art. 46. When the cable elongates the truss must deflect downward thus throwing a part of the ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ... the span, equate it to the deflection of the cable and show that the value of f thus found is less than 0.70. Art. 54. Temperature Stresses In Trusses. The effect of changes of temperature upon the cable has been discussed in Art. 46. When the cable elongates the truss must deflect downward thus throwing a part of the load upon it; when the cable contracts the truss is deflected upward and is also stressed. An approximate investigation will now be made to determine these stresses in the truss having no hinge. Let the hangers be adjusted so that at the standard temperature of 50 degrees there will be no stresses in the truss, all the load being carried by the cable. When the temperature rises / degrees the cable elongates the amount etc, where c is the length of the cable and e is the coefficient of expansion. From Art. 44 the deflection of the cable at the middle of the span is M=-L- =3i (I) 16 J x6s where s is the sag ratio. This must be equal to the deflection of the truss. Let S be the unit-stress in the chords at the middle of the truss, d the depth of the truss, then from the theory of flexure (Mechanics of Materials, Art. 37), 24 Ed which is the deflection at the middle of the truss. Equating the values of Bh given by (1) and (2) there results, after replacing c by its value in terms of / and s, which is the unit-stress in the chords at the middle of the truss, due to a rise or fall of t degrees. When the temperature rises this unit-stress is tension in the lower and compression in the upper chord, when it falls the reverse is the case. It is seen that these stresses are independent of the cross-section of the chords and that they increase with the depth of the truss. For example, let the span be 1000 feet, the sag 80 feet, the depth of the...
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Add this copy of A Text-Book on Roofs and Bridges to cart. $18.00, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of A Text-Book on Roofs and Bridges, Part III Bridge to cart. $21.60, fair condition, Sold by Crossroad Books rated 5.0 out of 5 stars, ships from Eau Claire, WI, UNITED STATES, published 1906 by John Wiley & Sons.
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Seller's Description:
Fair with no dust jacket. Part 3 only-Bridge Design. Bottom corners dampstained. Boards age-darkened, with light surface rubbing. Some sunning to spine and rear board; gilt lettering on spine still fairly bright. Light bumping on spine extremities and board corners. Dampstaining and light rippling on portions of endpapers. Previous owner's name stamp on first page and fold-out pages. Pages edges age-darkened/stained. 4 fold-out diagrams.; B&W Illustrations; EAH21C; 9 x 6"; 374 pages.
Add this copy of A Text-Book on Roofs and Bridges Part III Bridge Design to cart. $22.66, poor condition, Sold by Anybook rated 5.0 out of 5 stars, ships from Lincoln, UNITED KINGDOM, published 1913 by John Wiley and Sons.
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Seller's Description:
This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 1100grams, ISBN:
Add this copy of A Text-Book on Roofs and Bridges to cart. $28.30, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of A Text-Book on Roofs and Bridges to cart. $28.99, new condition, Sold by Ria Christie Books rated 4.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
Add this copy of A Text-Book on Roofs and Bridges to cart. $38.88, like new condition, Sold by Arbor-Scout rated 4.0 out of 5 stars, ships from Ann Arbor, MI, UNITED STATES, published 2009 by BiblioLife.
Add this copy of A Text-Book on Roofs and Bridges to cart. $40.90, new condition, Sold by Ria Christie Books rated 4.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
