A timber beam is 15 cm deep by 10 cm wide, and carries a central load of 30 kN at the centre of a 3 m span; the beam is simply-supported at each end. The timber is reinforced with flat steel plates 10 cm wide by 1.25 cm thick bolted to the upper and lower surfaces of the beam. Taking E for steel as 200 GN/m² and E for timber as 1 GN/m', estimate
A timber beam is 15 cm deep by 10 cm wide, and carries a central load of 30 kN at the centre of a 3 m span; the beam is simply-supported at each end. The timber is reinforced with flat steel plates 10 cm wide by 1.25 cm thick bolted to the upper and lower surfaces of the beam. Taking E for steel as 200 GN/m² and E for timber as 1 GN/m', estimate
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Hi. I just need a solution (11.11). The answers in the questions are:
(i) 120 MN/m2.
(ii) 1 .OO MN/m2.
(iii) 100 kN/m.
(iv) 0.75 cm.
Please provide solutions with these answers

Transcribed Image Text:A timber beam is 15 cm deep by 10 cm wide, and carries a central load of 30 kN at the
centre of a 3 m span; the beam is simply-supported at each end. The timber is reinforced
with flat steel plates 10 cm wide by 1.25 cm thick bolted to the upper and lower surfaces
of the beam. Taking E for steel as 200 GN/m² and E for timber as 1 GN/m?, estimate
11.11
282
Beams of two materials
(i)
(ii)
(iii)
(iv)
the maximum direct stress in the steel strips;
the average shearing stress in the timber;
the shearing load transmitted by the bolts;
the bending and shearing deflections at the centre of the beam.
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