**Zero-Force Members in Truss Structures****Objective:** Identify all the zero-force members.Determine the force in members JK, JN, and CD. State if the members are in tension or compression.**Truss Diagram Description:**The truss structure depicted is a symmetrical arrangement with a series of interconnected members forming triangular units. It spans horizontally with a total length of 70 feet and has a vertical height of 20 feet at its highest point.**Key Features:**- **Nodes:** Significant connection points labeled from A to J. - **Members:** Bars or segments joining the nodes. Specific members of interest for force analysis are JK, JN, and CD. - **Support:** - At node A, there is a pin support allowing rotation but not translation. - At node F, there is a roller support, which allows horizontal movement.- **Loads:** - There are two downward loads of 2 kips each applied at nodes C and D, both equal and separated by 30 feet longitudinally.**Geometry:**- The entire horizontal span is divided into three sections: - AB is 20 feet. - BC is 30 feet. - CD is 30 feet. - The vertical measurements indicate the highest point of 20 feet from base point G to apex J. **Analysis Requirements:**1. **Zero-Force Members:** Identify members in the system that do not carry any force under specific loading conditions, aiding in simplifying the truss analysis. 2. **Force Determination:** - Evaluate forces in specific members JK, JN, and CD. - Determine if these members exist in a state of tension (pulling apart) or compression (pushing together).

From the given truss figure, we have to find out the zero force member. Also we have to find out the…

Answered: (3) Identify all the zero-force…

(3) Identify all the zero-force members. Determine the force in members JK, JN, and CD. State if the members are in tension or compression. A M B 20 ft K C 2 k N 30 ft H DE -20 ft 2 k G 20 ft F

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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Concept explainers

Load on Structures

Civil engineers primarily deal with beams in their day-to-day applications. A beam is a structural member that resists shear loadings. There are various types of beams such as cantilever beam, simply supported beam, and over the hanging beam. All these beams have a different end and loading conditions.

Question

**Zero-Force Members in Truss Structures**

**Objective:** Identify all the zero-force members.

Determine the force in members JK, JN, and CD. State if the members are in tension or compression.

**Truss Diagram Description:**

The truss structure depicted is a symmetrical arrangement with a series of interconnected members forming triangular units. It spans horizontally with a total length of 70 feet and has a vertical height of 20 feet at its highest point.

**Key Features:**

- **Nodes:** Significant connection points labeled from A to J.

- **Members:** Bars or segments joining the nodes. Specific members of interest for force analysis are JK, JN, and CD.

- **Support:**
- At node A, there is a pin support allowing rotation but not translation.
- At node F, there is a roller support, which allows horizontal movement.

- **Loads:**
- There are two downward loads of 2 kips each applied at nodes C and D, both equal and separated by 30 feet longitudinally.

**Geometry:**

- The entire horizontal span is divided into three sections:
- AB is 20 feet.
- BC is 30 feet.
- CD is 30 feet.

- The vertical measurements indicate the highest point of 20 feet from base point G to apex J.

**Analysis Requirements:**

1. **Zero-Force Members:** Identify members in the system that do not carry any force under specific loading conditions, aiding in simplifying the truss analysis.

2. **Force Determination:**
- Evaluate forces in specific members JK, JN, and CD.
- Determine if these members exist in a state of tension (pulling apart) or compression (pushing together).

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