The Douglas Fir beam shown in the figure below (Figure 1) is reinforced with A-992 steel straps at its sides. Part A Determine the maximum stress in the steel if the beam is subjected to a moment of M, = 85 kN · m. Express your answer to three significant figures and include appropriate units. HA (Ost)max = Value Units Submit Request Answer Figure < 1 of 1 > Part B Determine the maximum stress in the wood. 20 mm 200 mm- 20 mm Express your answer to three significant figures and include appropriate units. ? 400 mm (ow)max = Value Units Submit Request Answer

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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**Instructional Material on Beam Stress Analysis**

The Douglas Fir beam shown in the figure below, reinforced with A-992 steel straps at its sides, is the subject of this stress analysis.

### Figure Description
- **Beam Diagram:**
  - The cross-section of the beam is depicted.
  - Dimensions are labeled: the width of the wood is 200 mm, with 20 mm steel straps on each side, totaling a width of 240 mm.
  - The height of the beam is 400 mm.
  - Axes: The vertical axis is labeled as \( y \) and the horizontal axis as \( z \).

### Problem Statement
You are tasked with determining the maximum stress within both the steel and the wood components of the beam when subjected to a bending moment.

#### Part A: Stress in Steel
- **Objective:** Determine the maximum stress in the steel.
- **Given:** Moment \( M_z = 85 \, \text{kN} \cdot \text{m} \).
- **Requirement:** Express the result to three significant figures and include appropriate units.
- **Input Box:** (σ_st)_max = [Value] [Units]

#### Part B: Stress in Wood
- **Objective:** Determine the maximum stress in the wood.
- **Requirement:** Express the result to three significant figures and include appropriate units.
- **Input Box:** (σ_w)_max = [Value] [Units]

**Interactive Tools:**
- Answer fields and submission buttons are provided to input and verify your calculations.
Transcribed Image Text:**Instructional Material on Beam Stress Analysis** The Douglas Fir beam shown in the figure below, reinforced with A-992 steel straps at its sides, is the subject of this stress analysis. ### Figure Description - **Beam Diagram:** - The cross-section of the beam is depicted. - Dimensions are labeled: the width of the wood is 200 mm, with 20 mm steel straps on each side, totaling a width of 240 mm. - The height of the beam is 400 mm. - Axes: The vertical axis is labeled as \( y \) and the horizontal axis as \( z \). ### Problem Statement You are tasked with determining the maximum stress within both the steel and the wood components of the beam when subjected to a bending moment. #### Part A: Stress in Steel - **Objective:** Determine the maximum stress in the steel. - **Given:** Moment \( M_z = 85 \, \text{kN} \cdot \text{m} \). - **Requirement:** Express the result to three significant figures and include appropriate units. - **Input Box:** (σ_st)_max = [Value] [Units] #### Part B: Stress in Wood - **Objective:** Determine the maximum stress in the wood. - **Requirement:** Express the result to three significant figures and include appropriate units. - **Input Box:** (σ_w)_max = [Value] [Units] **Interactive Tools:** - Answer fields and submission buttons are provided to input and verify your calculations.
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