6 ### Problem Statement**Determine the forces in members DE and DL.** The forces are positive if in tension, negative if in compression.Assume: \( F = 6.5\, \text{kN} \), \( a = 1.4\, \text{m} \), \( b = 0.7\, \text{m} \), \( d = 2.6\, \text{m} \), \( h = 2.8\, \text{m} \).### Truss Diagram DescriptionThe truss system depicted in the diagram consists of multiple members connecting various joints labeled \( A \) through \( N \). The base of the truss is supported by a pin at \( A \) and a roller at \( N \). A vertical load \( F \) (6.5 kN) is applied downwards at joint \( I \).- The horizontal distance between vertical members is \( d = 2.6 \, \text{m} \).- The vertical distance between horizontal members \( A \) to \( B \), \( B \) to \( C \), and \( C \) to \( D \) is \( h = 2.8 \, \text{m} \).- The vertical distance between adjacent members at the top right (from \( I \) to \( H \)) is divided into \( a = 1.4 \, \text{m} \) and \( b = 0.7 \, \text{m} \).### Truss AnalysisTo determine the forces in members DE and DL, typically a method of joints or method of sections would be used:1. **Method of Joints**: - Calculate support reactions at A and N. - Analyze forces at joints to find member forces by solving equilibrium equations (\(\sum F_x = 0\) and \(\sum F_y = 0\)).2. **Method of Sections**: - Cut the truss through members DE and DL. - Solve equilibrium equations for the section to determine forces in members DE and DL.### AnswersEnter the numerical value of the forces (in kN) for members DE and DL in the boxes provided.**DE =** (Input Box) **kN****DL =** (Input Box) **kN**> Note: The correct values for the forces in members DE

Answered: Image /qna-images/answer/53c84dbf-766f-4eae-887e-b1f4eb076eb7.jpg

Determine the forces in members DE and DL. The forces are positive if in tension, negative if in compression. Assume F = 6.5 kN, a = 1.4 m, b = 0.7 m, d = 2.6 m, h = 2.8 m. h h h D DL = O B Answers: DE= i i d E L M d F K d G KN kN d H F 7

Determine the forces in members DE and DL. The forces are positive if in tension, negative if in compression. Assume F = 6.5 kN, a = 1.4 m, b = 0.7 m, d = 2.6 m, h = 2.8 m. h h h D DL = O B Answers: DE= i i d E L M d F K d G KN kN d H F 7

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

### Problem Statement
**Determine the forces in members DE and DL.** The forces are positive if in tension, negative if in compression.
Assume: \( F = 6.5\, \text{kN} \), \( a = 1.4\, \text{m} \), \( b = 0.7\, \text{m} \), \( d = 2.6\, \text{m} \), \( h = 2.8\, \text{m} \).

### Truss Diagram Description
The truss system depicted in the diagram consists of multiple members connecting various joints labeled \( A \) through \( N \). The base of the truss is supported by a pin at \( A \) and a roller at \( N \). A vertical load \( F \) (6.5 kN) is applied downwards at joint \( I \).

- The horizontal distance between vertical members is \( d = 2.6 \, \text{m} \).
- The vertical distance between horizontal members \( A \) to \( B \), \( B \) to \( C \), and \( C \) to \( D \) is \( h = 2.8 \, \text{m} \).
- The vertical distance between adjacent members at the top right (from \( I \) to \( H \)) is divided into \( a = 1.4 \, \text{m} \) and \( b = 0.7 \, \text{m} \).

### Truss Analysis
To determine the forces in members DE and DL, typically a method of joints or method of sections would be used:

1. **Method of Joints**:
- Calculate support reactions at A and N.
- Analyze forces at joints to find member forces by solving equilibrium equations (\(\sum F_x = 0\) and \(\sum F_y = 0\)).

2. **Method of Sections**:
- Cut the truss through members DE and DL.
- Solve equilibrium equations for the section to determine forces in members DE and DL.

### Answers
Enter the numerical value of the forces (in kN) for members DE and DL in the boxes provided.

**DE =** (Input Box) **kN**

**DL =** (Input Box) **kN**

> Note: The correct values for the forces in members DE

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