Q.5 A non-uniform, rigid jointed frame is fixed at supports A and D as snown in Figure Q.5. where El is constant for both members. For the loading indicated, and using the moment distribution method, (a) determine the final bending moments at supports A and D and at joint B, (b) determine the support reactions, (c) sketch the bending moment diagram for the frame ABD indicating all salient values. Hint: wa? FEMAB = - 12L2 noted below. For a span under part udl starting at left hand support, the FEM are: (6L2 – 8aL + 3a?) & FEMBA = + wa3 (4L - 3a) as 12L2 UDL on left side wa? 1212 (61-8al+3a*) w(sn) MA wa 12L (4L-3a) MA A 6 kN/m 24 kN D 4 m 2 m 2 m 5m A
Q.5 A non-uniform, rigid jointed frame is fixed at supports A and D as snown in Figure Q.5. where El is constant for both members. For the loading indicated, and using the moment distribution method, (a) determine the final bending moments at supports A and D and at joint B, (b) determine the support reactions, (c) sketch the bending moment diagram for the frame ABD indicating all salient values. Hint: wa? FEMAB = - 12L2 noted below. For a span under part udl starting at left hand support, the FEM are: (6L2 – 8aL + 3a?) & FEMBA = + wa3 (4L - 3a) as 12L2 UDL on left side wa? 1212 (61-8al+3a*) w(sn) MA wa 12L (4L-3a) MA A 6 kN/m 24 kN D 4 m 2 m 2 m 5m A
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:2.5 A hon-uniform, rigid jointed frame is fixed at supports A and D as shown
in Figure Q.5. where EI is constant for both members.
For the loading indicated, and using the moment distribution method,
(a) determine the final bending moments at supports A and D
and at joint B,
(b) determine the support reactions,
(c) sketch the bending moment diagram for the frame ABD indicating all
salient values.
Hint:
wa?
FEMAB = -
12L2
noted below.
For a span under part udl starting at left hand support, the FEM are:
(6L? – 8aL + 3a2) & FEMBA = +
wa3
(4L- 3a) as
12L2
UDL on left side
wa?
1212 (61-8a1+3a*) w (sen)
12L2 (4L-3a)
MRA
MA
B
6 kN/m
24 kN
B
4 m
2 m
2 m
5m
A
Figure Q.5
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