Standard Sized Holes 0.6" ThickA36 Steel 4" Pu = 75k Pu = 75k 2.0" 2.0" 2.25" Plan View DO 7/8" diameterA325 Bolts Note: for the plate as a TM, the following is given: Section View

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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For the connection below you may neglect any moment in the connection caused by the eccentricity of the load. You must answer the following question:

  1. Is the connection adequate? Check all limit states and other requirements.
Standard Sized Holes
0.6" ThickA36 Steel
4"
Pu = 75k
Pu = 75k
2.0"
2.0"
2.25"
Plan View
7/8" diameter A325 Bolts
Note: for the plate as
a TM, the following is
given:
þPnfracture = 78.3 kips
Section View
Transcribed Image Text:Standard Sized Holes 0.6" ThickA36 Steel 4" Pu = 75k Pu = 75k 2.0" 2.0" 2.25" Plan View 7/8" diameter A325 Bolts Note: for the plate as a TM, the following is given: þPnfracture = 78.3 kips Section View
Expert Solution
Step 1

Given:

Pu=75 kBolt diameter=78 inFnv=68 ksiFu=58 ksi

Step 2

Shearing of bolt.

ϕRn=0.75AbFnvNo. of bolts=0.75×π4×782×68×3=92 kips>75 kips

Hence ok.

Bearing.

ϕRnBearing=0.75×2.4dtFu=0.75×2.4×78×0.6×58=54.81 kips

Tearing

ϕRnTearing=0.75×1.2lctFu=0.75×1.2×20-78+116×0.6×58=33.2775 kips

 

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