Questions b and c. The pressure from part a is 0.86832 Mpa ---**Table 8.1: Engineering Properties of Different Rocks**This table presents the engineering properties of various rock types, categorized into igneous, metamorphic, and sedimentary groups. The properties include compressive strength, tensile strength, shear strength, modulus of elasticity, Poisson's ratio, unit weight, porosity, and angle of shear resistance. Here's a detailed description:### Rock Types and Properties:#### Igneous Rocks:1. **Granite:** - Unweathered: - Compressive Strength: 133-240 MPa - Tensile Strength: 13-23 MPa - Shear Strength: 41 MPa - Modulus of Elasticity: 79 GPa - Poisson's Ratio: 0.15-0.24 - Unit Weight: 25.5-27.5 kN/m³ - Porosity: 0.5-1.5% - Angle of Shear Resistance: 48-56° - Slightly Altered: - Compressive Strength: 102-204 MPa - Tensile Strength: 10-17 MPa - Shear Strength: 35 MPa - Modulus of Elasticity: 70 GPa - Poisson's Ratio: 0.17 - Unit Weight: 25-26.7 kN/m³ - Porosity: 1-5% - Angle of Shear Resistance: 47-55°2. **Syenite, Diorite, Dolerite:** - Similar properties with slight variations in compressive and tensile strengths, usually ranging from 80 to 350 MPa and 8 to 25 MPa respectively.3. **Basalt:** - Compressive Strength: 78-317 MPa - Tensile Strength: 6-22 MPa - Modulus of Elasticity and other properties vary significantly.#### Metamorphic Rocks:1. **Gneiss:** - Compressive Strength: 48-196 MPa - Tensile Strength: 4-19 MPa - Shear Strength: 31 MPa - Varied Modulus of Elasticity and Poisson's Ratio.2. **Schist, Marble, Slate:** - Schist materials **Exercise Figure 8.1**8.1) The concrete has a unit weight of 2.4 Mg/m³ (150 lb/ft³). The height of the dam is 67.1 m (220 ft), the crest is 6.1 m (20 ft) wide, and the base is 61 m (200 ft) wide. *Note: 1 ft = 0.3048 m.*a. What is the average pressure exerted on the rock foundation in MPa (lb/ft²)? What is the maximum pressure? Explain.b. Refer to the different sedimentary rocks listed in Table 8.1. Using average compressive strength and shear strength values for these sedimentary rocks, compare them to the average pressure calculated in part (a). Are any so low to be of concern? Explain.c. Assume that the pressure from the weight of the dam is dissipated within 30.3 m (100 ft) below the rock surface and the full pressure acts over this distance. How much settlement will occur in the center of the dam because of the gravity force for the different sedimentary rocks listed in Table 8.1 (use average values)?7. Excavation for a gravity dam foundation revealed a unit of poorly cemented sandstone 30.3 m (100 ft) wide (plan view) within a massive dolomite sequence. The dolomite has an *E* value of 5.5 × 10⁴ MPa (8 × 10⁶ psi) and the sandstone has an *E* value of 6.9 × 10³ MPa (1 × 10⁶ psi).a. What would be the concern if both rocks were...

Answered: Image /qna-images/answer/a9f6b2da-85f3-4628-be63-7d2e93be6754.jpg

8.1). The concrete has a unit weight of 2.4 Mg/m³ (150 lb/ft³). The height of the dam is 67.1 m (220 ft), the crest is 6.1 m (20 ft) wide, and the base is 61 m (200 ft) wide. Note: 1 ft = 0.3048 m. a. What is the average pressure exerted on the rock foundation in MPa (lb/ft2)? What is the maximum pressure? Explain. b. Refer to the different sedimentary rocks listed in Table 8.1. Using average compressive strength and shear strength values for these sedimentary rocks compare them to the average pressure calculated in part (a). Are any so low to be of concern? Explain.

8.1). The concrete has a unit weight of 2.4 Mg/m³ (150 lb/ft³). The height of the dam is 67.1 m (220 ft), the crest is 6.1 m (20 ft) wide, and the base is 61 m (200 ft) wide. Note: 1 ft = 0.3048 m. a. What is the average pressure exerted on the rock foundation in MPa (lb/ft2)? What is the maximum pressure? Explain. b. Refer to the different sedimentary rocks listed in Table 8.1. Using average compressive strength and shear strength values for these sedimentary rocks compare them to the average pressure calculated in part (a). Are any so low to be of concern? Explain.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Block B has a mass m = 10 kg and is released from rest when it is on top of the cart A, which has a…

A: Given:- The mass of the block B (m) = 10 kg Block B is released from rest when it is on top of the…

Q: The 5-kg collar has a velocity of 5 m/s to the right when it is at A (Figure 3). It then travels…

A: Answer We are given Mass of collar mc = 5 kg Velocity at point A is VA= 5 m/s Unstretched length…

Q: Determine the moment of the distributed loading at point B.

Q: Specifications of the steel rod at B L= 2m d=25 mm E=200 GPa Determine the beam deflection at B…

Q: The 50-kg homogeneous smooth sphere rests on the 30° incline A and bears against the smooth vertical…

Q: 7. Determine the smallest force P that the worker must apply to the bar CD to prevent the…

A: Step 1: Step 2: Step 3: Step 4:

Q: The spool of wire having a weight of 300 lb rests on the ground at B and against the wall at A.…

A: Given Data: Weight of the wire spool is W=300 lb. The coefficient of friction between the spool and…

Q: out of The collar at C slides on a frictionless bar AB, which is fixed in space. Cable CDE passes…

A: Given :

Q: A 5.0m simple beam supports the given floor loads Wu and a concentrated load Pu due to the wall…

A: The given data is: The dimension of beam=250 mm*400 mm. The value of f’c =21 MPa. The Value of fy is…

Q: Q4/ A rectangular plate 3 m long and 1 m wide is immersed vertically in water in such a way that its…

A: Given data:Length of plate, L=3mWidth of plate, b= 1m.Area of plate , A=L×B=3m2we also know,…

Q: Collar C moves with a constant speed v =6 ft/sec along the fixed rod AB where ß =33° and d = 6 ft,…

A: Speed = 6ft/secβ = 33°d = 6 ft

Q: 1. The spring is placed between the wall and the 10-kg block. If the block is subjected to a force…

A: Using principle of Work and energy :T1+∑ U1-2=T2

Q: 3. he box is stationary on the inclined surface. The coefficient of static friction between the box…

A: Draw the free-body diagram of the box as follows. (a) The formula to calculate the frictional force…

Q: What is the minimum force of P applied to B without disturbing the equlibrium? Mass of Block A =…

Q: Draw the free-body diagram of the hand punch which is pinned at A and bears down on smooth surfaces…

Q: 2 kip/ft 6 in 10 in В 16 in E• D. 40 kip 16 in 5 ft 5ft 10 ft The simply-supported beam-column above…

A: Given:- The simply supported beam is loaded with uniform load and an axial load The magnitude of the…

Q: 9. Use the force method to find the value of the redundant NDB. All bar areas are equal. (Ans: NDB =…

A: We have to determine the value of redundant NDB as per the given data in the question and using the…

Question

Questions b and c. The pressure from part a is 0.86832 Mpa

---

**Table 8.1: Engineering Properties of Different Rocks**

This table presents the engineering properties of various rock types, categorized into igneous, metamorphic, and sedimentary groups. The properties include compressive strength, tensile strength, shear strength, modulus of elasticity, Poisson's ratio, unit weight, porosity, and angle of shear resistance. Here's a detailed description:

### Rock Types and Properties:

#### Igneous Rocks:
1. **Granite:**
- Unweathered:
- Compressive Strength: 133-240 MPa
- Tensile Strength: 13-23 MPa
- Shear Strength: 41 MPa
- Modulus of Elasticity: 79 GPa
- Poisson's Ratio: 0.15-0.24
- Unit Weight: 25.5-27.5 kN/m³
- Porosity: 0.5-1.5%
- Angle of Shear Resistance: 48-56°
- Slightly Altered:
- Compressive Strength: 102-204 MPa
- Tensile Strength: 10-17 MPa
- Shear Strength: 35 MPa
- Modulus of Elasticity: 70 GPa
- Poisson's Ratio: 0.17
- Unit Weight: 25-26.7 kN/m³
- Porosity: 1-5%
- Angle of Shear Resistance: 47-55°

2. **Syenite, Diorite, Dolerite:**
- Similar properties with slight variations in compressive and tensile strengths, usually ranging from 80 to 350 MPa and 8 to 25 MPa respectively.

3. **Basalt:**
- Compressive Strength: 78-317 MPa
- Tensile Strength: 6-22 MPa
- Modulus of Elasticity and other properties vary significantly.

#### Metamorphic Rocks:
1. **Gneiss:**
- Compressive Strength: 48-196 MPa
- Tensile Strength: 4-19 MPa
- Shear Strength: 31 MPa
- Varied Modulus of Elasticity and Poisson's Ratio.

2. **Schist, Marble, Slate:**
- Schist materials

**Exercise Figure 8.1**

8.1) The concrete has a unit weight of 2.4 Mg/m³ (150 lb/ft³). The height of the dam is 67.1 m (220 ft), the crest is 6.1 m (20 ft) wide, and the base is 61 m (200 ft) wide. *Note: 1 ft = 0.3048 m.*

a. What is the average pressure exerted on the rock foundation in MPa (lb/ft²)? What is the maximum pressure? Explain.

b. Refer to the different sedimentary rocks listed in Table 8.1. Using average compressive strength and shear strength values for these sedimentary rocks, compare them to the average pressure calculated in part (a). Are any so low to be of concern? Explain.

c. Assume that the pressure from the weight of the dam is dissipated within 30.3 m (100 ft) below the rock surface and the full pressure acts over this distance. How much settlement will occur in the center of the dam because of the gravity force for the different sedimentary rocks listed in Table 8.1 (use average values)?

7. Excavation for a gravity dam foundation revealed a unit of poorly cemented sandstone 30.3 m (100 ft) wide (plan view) within a massive dolomite sequence. The dolomite has an *E* value of 5.5 × 10⁴ MPa (8 × 10⁶ psi) and the sandstone has an *E* value of 6.9 × 10³ MPa (1 × 10⁶ psi).

a. What would be the concern if both rocks were...

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

Use E= 200 GPa, I = 800 x 106 mm4 when necessary. P = 229kN For the beam loaded as shown, determine the reaction components using Double Integration Method 3.00 3.00 P 300 kNm 6.00 90 kN/m 7.00 12.0 m 4.00 6.00 P
ps. include the horizontal and vertical components, Ra.
Determine the value of Ely at end A of the overhanging beam ABCD. 6000 lb 6000 lb B A D. 2 ft → 4 ft Value of Ely
The hollow core panel is made from plain stone concrete. Determine the dead weight of the panel in KN. The holes each have a diameter of 100 mm.
The spring is placed between the wall and the 11.5-kg block. If the block is subjected to a force of F = 570 N, determine its velocity in m/s when s = 0.5 m. When s = 0, the block is at rest and the spring is uncompressed. The contact surface is smooth. k = 510 N/m %D k :
Equilibrium of particles
For the beam shown below, determine the reaction at support B. Assume B is pin and A and C are rollers. Take E = 200 GPa, I = 150 x 106 mmª. 4 kN/m 15 m B -20 m If the support at B settles downward by 10 mm, explain how you would determine the support reaction at B.
1.1.10 - Show all work please.
The given 450mm by 450mm square column has f'c-21 MPa and fy=415MPa. The distance of the centroid of the steel from the face of the column is 66mm and the bar size is 28mm.