The roof is supported by joists that rest on two girders. Each joist can beconsidered to be simply supported, and the front girder can be considered tobe attached to the three columns by a pin at A and rollers at B and C. Assumethe roof will be made from a mm-thick cinder concrete slab, and each joist hasa weight of b kN. The cinder concrete has a weight of 20 kN/m3. According tothe standard, the roof will be subjected to a snow loading of 1.2 kN/m2. Thejoists have a length of 8 m each. The variables a and b depend on your studentnumber. Note that all the loads are transferred to the girder via the joists, seethe figures below. Using both the general and the simplified Slope DeflectionMethod (show them separately) and assuming the joist loads to be uniformlydistributed on each girder, draw the shear force and bending momentdiagrams for the girder. There are no support settlements.Use x= 20 to get the value of a and b1m 1m 1m 1m 1m 1m 1m 1mBHibbeler (2017)xa = 70 + b = 2 + 30C

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Method (show them separately) and assuming the joist loads to be uniformly distributed on each girder, draw the shear force and bending moment diagrams for the girder. There are no support settlements.

Method (show them separately) and assuming the joist loads to be uniformly distributed on each girder, draw the shear force and bending moment diagrams for the girder. There are no support settlements.

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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Question

The roof is supported by joists that rest on two girders. Each joist can be
considered to be simply supported, and the front girder can be considered to
be attached to the three columns by a pin at A and rollers at B and C. Assume
the roof will be made from a mm-thick cinder concrete slab, and each joist has
a weight of b kN. The cinder concrete has a weight of 20 kN/m3. According to
the standard, the roof will be subjected to a snow loading of 1.2 kN/m2. The
joists have a length of 8 m each. The variables a and b depend on your student
number. Note that all the loads are transferred to the girder via the joists, see
the figures below. Using both the general and the simplified Slope Deflection
Method (show them separately) and assuming the joist loads to be uniformly
distributed on each girder, draw the shear force and bending moment
diagrams for the girder. There are no support settlements.
Use x= 20 to get the value of a and b
1m 1m 1m 1m 1m 1m 1m 1m
B
Hibbeler (2017)
x
a = 70 + b = 2 + 30
C

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