**Determining Cost per Cubic Yard for Excavation Conditions**To estimate the cost per cubic yard accurately for different excavation conditions, consider the following parameters and be aggressive with the assumed fill factor:| Condition | (1) | (2) ||--------------------|----------------------------|-----------------------------------|| Material | Dry clay (tough) | Sand and gravel (gravel, wet) || Depth of excavation (ft) | 10 | 14 || Angle of swing (degrees) | 50 | 80 || Percent swell | 0 | 16 || Efficiency factor (min per hr) | 45 | 50 |**Explanation of Parameters:**1. **Material:** - **Condition 1:** Dry clay (tough) - **Condition 2:** Sand and gravel (gravel, wet)2. **Depth of Excavation (ft):** - **Condition 1:** 10 feet - **Condition 2:** 14 feet3. **Angle of Swing (degrees):** - **Condition 1:** 50 degrees - **Condition 2:** 80 degrees4. **Percent Swell:** - **Condition 1:** 0% - **Condition 2:** 16%5. **Efficiency Factor (min per hr):** - **Condition 1:** 45 minutes per hour - **Condition 2:** 50 minutes per hourThese factors are critical in calculating the cost per cubic yard for excavation processes. Adjustments in fill factor and efficiency can significantly impact the overall cost estimation. A crawler hoe with a 2-cubic yard (cy) bucket costs $115 per hour (excluding the operator). It is capable of excavating and loading trucks under specified conditions. The machine's maximum digging depth is 22 feet.

Given Maximum digging depth= 22 ft

A crawler hoe having a 2-cy bucket and whose cost per hour is $115 (without operator) will excavate and load trucks under each of the stated conditions. The maximum digging depth of the machine is 22 ft.

A crawler hoe having a 2-cy bucket and whose cost per hour is $115 (without operator) will excavate and load trucks under each of the stated conditions. The maximum digging depth of the machine is 22 ft.

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

Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.

Question

**Determining Cost per Cubic Yard for Excavation Conditions**

To estimate the cost per cubic yard accurately for different excavation conditions, consider the following parameters and be aggressive with the assumed fill factor:

| Condition | (1) | (2) |
|--------------------|----------------------------|-----------------------------------|
| Material | Dry clay (tough) | Sand and gravel (gravel, wet) |
| Depth of excavation (ft) | 10 | 14 |
| Angle of swing (degrees) | 50 | 80 |
| Percent swell | 0 | 16 |
| Efficiency factor (min per hr) | 45 | 50 |

**Explanation of Parameters:**

1. **Material:**
- **Condition 1:** Dry clay (tough)
- **Condition 2:** Sand and gravel (gravel, wet)

2. **Depth of Excavation (ft):**
- **Condition 1:** 10 feet
- **Condition 2:** 14 feet

3. **Angle of Swing (degrees):**
- **Condition 1:** 50 degrees
- **Condition 2:** 80 degrees

4. **Percent Swell:**
- **Condition 1:** 0%
- **Condition 2:** 16%

5. **Efficiency Factor (min per hr):**
- **Condition 1:** 45 minutes per hour
- **Condition 2:** 50 minutes per hour

These factors are critical in calculating the cost per cubic yard for excavation processes. Adjustments in fill factor and efficiency can significantly impact the overall cost estimation.

A crawler hoe with a 2-cubic yard (cy) bucket costs $115 per hour (excluding the operator). It is capable of excavating and loading trucks under specified conditions. The machine's maximum digging depth is 22 feet.

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