For this problem, I need help understanding the data I am supposed to use to graph the needed graphs for this question and how these graphs are supposed to look. **ASTM Gradation Requirements for Concrete Sand**The ASTM gradation requirements for sand used in concrete manufacturing are given below along with the results from a sieve analysis performed on sand from a candidate borrow pit area.| **Sieve** | **Number** | 4 | 8 | 16 | 30 | 50 | 100 ||-----------|------------|---|---|----|----|----|-----|| **Opening (mm)** | | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 || **Requirements % Passing** | | 95-100 | 80-100 | 50-85 | 25-60 | 10-30 | 2-10 || **Candidate Sand Weight Retained (gr)** | | 26 | 130 | 240 | 252 | 210 | 138 |1. **Plotting Gradation Band:** It's intended to plot the allowable band of gradations specified by ASTM on a semi-logarithmic graph based on the provided data. Following this, the gradation for the sand from the candidate borrow pit area should be calculated. 2. **Plotting Gradation Curve:** The gradation curve for the sand from the candidate site needs to be plotted on the same graph alongside the ASTM gradation requirements. This will help assess whether the sand from the candidate borrow pit area meets the acceptable standards. **Graph Explanation:**The graph is expected to be a semi-logarithmic plot where the x-axis represents the sieve opening sizes and the y-axis represents the percentage passing. The allowable gradation band will be displayed, and the plotted curve for the candidate sand will show how it compares to the ASTM gradation requirements.

Answered: Image /qna-images/answer/ca115001-1bc1-4ea4-b502-224fb6abf773.jpg

1. It is desired to plot the band of gradations allowable specified by ASTM in the semi-logarithmic plot of the enclosed sketch. Then it is desired to calculate the gradation for the sand from the candidate borrow pit area. 2. It is desired to plot the gradation curve for the sand from the candidate site in the same graph with the gradation requirements of ASTM, and assess whether the sand from the candidate borrow pit area is acceptable.

1. It is desired to plot the band of gradations allowable specified by ASTM in the semi-logarithmic plot of the enclosed sketch. Then it is desired to calculate the gradation for the sand from the candidate borrow pit area. 2. It is desired to plot the gradation curve for the sand from the candidate site in the same graph with the gradation requirements of ASTM, and assess whether the sand from the candidate borrow pit area is acceptable.

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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Question

For this problem, I need help understanding the data I am supposed to use to graph the needed graphs for this question and how these graphs are supposed to look.

**ASTM Gradation Requirements for Concrete Sand**

The ASTM gradation requirements for sand used in concrete manufacturing are given below along with the results from a sieve analysis performed on sand from a candidate borrow pit area.

| **Sieve** | **Number** | 4 | 8 | 16 | 30 | 50 | 100 |
|-----------|------------|---|---|----|----|----|-----|
| **Opening (mm)** | | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 |
| **Requirements % Passing** | | 95-100 | 80-100 | 50-85 | 25-60 | 10-30 | 2-10 |
| **Candidate Sand Weight Retained (gr)** | | 26 | 130 | 240 | 252 | 210 | 138 |

1. **Plotting Gradation Band:** It's intended to plot the allowable band of gradations specified by ASTM on a semi-logarithmic graph based on the provided data. Following this, the gradation for the sand from the candidate borrow pit area should be calculated.

2. **Plotting Gradation Curve:** The gradation curve for the sand from the candidate site needs to be plotted on the same graph alongside the ASTM gradation requirements. This will help assess whether the sand from the candidate borrow pit area meets the acceptable standards.

**Graph Explanation:**
The graph is expected to be a semi-logarithmic plot where the x-axis represents the sieve opening sizes and the y-axis represents the percentage passing. The allowable gradation band will be displayed, and the plotted curve for the candidate sand will show how it compares to the ASTM gradation requirements.

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