The canopy shown provides shelter for the entrance of a building. Consider all members to be simply supported. The bar joists at C, D, E, F each have a weight of 0.6kN and are 6m long. The roof is 100mm thick and is to be plain lightweight concrete having a density of 16kN/m3. Live load is assumed to be trapezoidal, with 3kN/m2 at the right (against the wall) and 1kN/m2 at the left (overhang). Assume the concrete slab is simply supported between joists. Draw the shear and moment diagram for the girder AB. Neglect its weight. 0.5m' 0.5 m' 0.5 m'0.5 m' 0.5 m

The canopy shown provides shelter for the entrance of a building. Consider all members to be simply supported. The bar joists at C, D, E, F each have a weight of 0.6kN and are 6m long. The roof is 100mm thick and is to be plain lightweight concrete having a density of 16kN/m3. Live load is assumed to be trapezoidal, with 3kN/m2 at the right (against the wall) and 1kN/m2 at the left (overhang). Assume the concrete slab is simply supported between joists. Draw the shear and moment diagram for the girder AB. Neglect its weight. 0.5m' 0.5 m' 0.5 m'0.5 m' 0.5 m

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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Concept explainers

Sizing Joists and Rafters

In civil engineering and building construction, joists and rafters are the major components including beams and columns. Almost every structural construction including buildings, skyscrapers, bridges, commercial complexes, and so on makes use of joists and rafters to provide structural integrity to the building. Joists are primarily thick long pieces of metals, concrete, or wood that are used to support the floor and ceiling. On the other hand, rafters form the major component of pitched roofs, which are a series of sloped long pieces extending from a ridged area that makes contact with the plane area of the wall. They account for the load-bearing of the building along with the beams.

Question

The canopy shown provides shelter for the entrance of a building. Consider all members to be simply
supported. The bar joists at C, D, E, F each have a weight of 0.6kN and are 6m long. The roof is 100mm
thick and is to be plain lightweight concrete having a density of 16kN/m3. Live load is assumed to be
trapezoidal, with 3kN/m2 at the right (against the wall) and 1kN/m2 at the left (overhang). Assume the
concrete slab is simply supported between joists. Draw the shear and moment diagram for the girder
AB. Neglect its weight.
0.5m' 0.5 m' 0.5 m'0.5 m' 0.5 m

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