Since  the reaction force at point A is 8975 #, The reaction force at point H is 7625#, the stress force in member AB is 14262 # (C), and the stress force in member BC is 11083# (T); calculate the minimum  steel bolt size for attachment at points A and H. Use a factor of safety of 1.5 and a fitting factor of 1.15

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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(See Attached picture of truss)

2.  Since  the reaction force at point A is 8975 #, The reaction force at point H is 7625#, the stress force in member AB is 14262 # (C), and the stress force in member BC is 11083# (T); calculate the minimum  steel bolt size for attachment at points A and H. Use a factor of safety of 1.5 and a fitting factor of 1.15

The image depicts a structural truss diagram with labeled points and force arrows. Here’s a detailed transcription for educational purposes:

**Truss Diagram:**

- **Points and Connections:**
  - The truss is labeled with points A, B, C, D, E, F, G, and H.
  - Nodes are connected by straight lines, forming triangles and quadrilaterals within the truss structure.

- **Supports:**
  - Point A is a fixed support, usually indicated by a solid black triangle with a base line.
  - Point H has a roller support, symbolized by a triangle with a circular base, allowing horizontal movement.

- **Force Arrows:**
  - There are three downward-pointing arrows representing external forces acting on the truss.
  - These forces are applied at points B, D, and F.

- **Structural Analysis:**
  - The diagram can be used for analyzing forces in a truss system, determining reactions at supports, and understanding the distribution of tension and compression within the structure.

This setup is typical in civil engineering to study the stability and efficiency of bridge or roof trusses.
Transcribed Image Text:The image depicts a structural truss diagram with labeled points and force arrows. Here’s a detailed transcription for educational purposes: **Truss Diagram:** - **Points and Connections:** - The truss is labeled with points A, B, C, D, E, F, G, and H. - Nodes are connected by straight lines, forming triangles and quadrilaterals within the truss structure. - **Supports:** - Point A is a fixed support, usually indicated by a solid black triangle with a base line. - Point H has a roller support, symbolized by a triangle with a circular base, allowing horizontal movement. - **Force Arrows:** - There are three downward-pointing arrows representing external forces acting on the truss. - These forces are applied at points B, D, and F. - **Structural Analysis:** - The diagram can be used for analyzing forces in a truss system, determining reactions at supports, and understanding the distribution of tension and compression within the structure. This setup is typical in civil engineering to study the stability and efficiency of bridge or roof trusses.
Expert Solution
Step 1

Given Data:

The reaction force at point A is RA=8975 lbs.

The reaction force at point H is RH=7625 lbs.

The stress force in member AB is FAB=14262 lbs (Compression).

Since, the beam is symmetrical and load is even, the stress force in member FH is FFH=14262 lbs (Compression).

The stress force in member BC is FBC=-11083 lbs (Tension).

Since, the beam is symmetrical and load is even, the stress force in member FG is FFG=-11083 lbs (Tension).

Factor of safety is FS=1.5

Fitting Factor is FF=1.15 

Consider the bolts of grade A307 Grade C.

 

 

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