In: Physics
Deflection tests were conducted on a steel joist and a
timber joist both simply supported over a span of 5 m and carrying
a point load of 45 kN at distance of ‘a’ from left support. Maximum
deflection was observed at a position 2.4 m from the left support
for steel joist and 1.85 m from the left support for steel joist.
Calculate and compare the results for maximum deflection, slope at
both ends and deflection under the load for both steel and timber
joists. Take Flexural rigidity for steel joist as 14 x 1012 Nmm2
and the Flexural rigidity for timber joist as 6.9 x 1012 Nmm2.
Suggest the changes to be made in the dimensions of the beam for
reducing the deflection based on the
results obtained.