Problem: for the frame below, assume L₁=L₂=6ft, L3=L₁=10ft, h=10 ft; P1=P₂=30k, P,=20k; and E=29,000 ksi for all beams and columns. Also assume that beams have the size of W24x84 for the two stories, W21x50 for the third story, and W14x211 for all the columns.

Problem: for the frame below, assume L₁=L₂=6ft, L3=L₁=10ft, h=10 ft; P1=P₂=30k, P,=20k; and E=29,000 ksi for all beams and columns. Also assume that beams have the size of W24x84 for the two stories, W21x50 for the third story, and W14x211 for all the columns.

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

Draw moment diagram please

Portal Method
Problem: for the frame below, assume L₁=L₂=6ft,
L3=L₁=10ft, h=10 ft; P1=P,₂=30k, P,=20k; and E=29,000
ksi for all beams and columns. Also assume that beams
have the size of W24x84 for the two stories, W21x50 for
the third story, and W14x211 for all the columns.
P2
K
F
R
H
O
D
h
I
Part a: use the portal method to solve the reaction forces
and the moment diagram of the frame. in fi.
h

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Step 1: Introduce the problem statement

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Step 2: Determine column shear force

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Step 3: Determine column moments

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Step 4: Determine beam moments

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Step 5: Compute beam shear

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Step 6: Compute column axial force

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Step 7: Determine support reactions

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Step 8: Plot bending moment diagram

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