Problem 3:The timber member has a cross-sectional area of 1750 mm² and its modulusof elasticity is 12 GPa. Compute the change in the total length of the member afterthe loads shown are applied.40 kN35 kN20 kNDAB•to+1.5 m→+-3 m3 m

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Answered: Problem 3: The timber member has a…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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• Figure below shows a house floor which uses 50 mm wide x 150 mm deep timber joists spaced at 400 mm centres. If the maximum permissible stress in the timber is limited to 7.5 N/mm2, determine the maximum allowable simply supported span of the floor if it supports the following loads: • Dead Load of floor • Imposed Load of floor = 1.5kN/m² = 0.45kN/m? Floor boards Span Ceiling 150 Joist 50 400 mm 6/23/2021 28
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A timber column, 8 in. × 8 in. in cross section, is reinforced on each side by a steel plate 8 in. wide and t in. thick. Determine the thickness t so that the column will support an axial load of 300 kips without exceeding a maximum timber stress of 1200 psi or a maximum steel stress of 20 ksi. The moduli of elasticity are 1.5 × 106 psi for timber, and 29 × 106 psi for steel.
A reinforced concrete T-Beam has a width of 800mm and a thickness of 50mm. It has an effective depth of 300mm and is reinforced at the bottom with a total steel area of 1800sq.mm. If the web thickness of the T-beam is 200mm, with a concrete strength of fc' = 20MPa and yield strength of steel fy= 400MPa. Assume steel yields. The value of the area subjected tocompressive stress is _sq.mm A. 42,353 sq.mmB. 42,553 sq.mmC. 42,153 sq.mmD. 41,953 sq.mm
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Problem 6: The compound bar containing steel, bronze, and aluminum segments carries the axia! loads shown in the figure. The properties of the segments and the working stresses are listed in the table. Steel 2 ft Bronze 4 ft A (in.²) E (psi) o, (psi) Aluminum 3 ft 2P Steel 0.75 30 × 106 20 000 Bronze 1.00 12 x 106 18 000 4P Aluminum 0.50 10 x 106 12 000 Determine the maximum allowable value of P if the change in length of the entire bar is limited to 0.08 in. and the working stresses are not to be exceeded.
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Problem 3: The timber member has a cross-sectional area of 1750 mm2 and its modulus of elasticity is 12 GPa. Compute the change in the total length of the member after the loads shown are applied. 40 kN 35 kN 20 kN D A B +1.5 m+ 3 m 3 m