Construction Materials, Methods and Techniques (MindTap Course List)
4th Edition
ISBN: 9781305086272
Author: William P. Spence, Eva Kultermann
Publisher: Cengage Learning
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Chapter 7, Problem 13RQ
What are the commonly used admixtures?
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Showing all work and steps find the
magnituded and stress ,
What is the value of the influence line for the reaction at support A for the beam shown at 5 m to the right of A? Select the reaction at support B to be the redundant.
a. 0 kN
b. -0.167 kN
c. 0.425 kN
d. 1.0 kN
Determine the force in member AB of the truss shown due to a temperature drop of 25°C in Members AB, BC, and CD and a temperature increase of 60°C in member EF. Use the method of consistent deformations.
a. 37.34 k
b. 0 k
c. 28 k
d. 46.67 k
Chapter 7 Solutions
Construction Materials, Methods and Techniques (MindTap Course List)
Ch. 7 - What are the basic ingredients in concrete?Ch. 7 - How does concrete cure and harden?Ch. 7 - What ingredients normally make up Portland cement?Ch. 7 - What are the designations for the different types...Ch. 7 - Prob. 5RQCh. 7 - How does the addition of air-entraining materials...Ch. 7 - What ingredients may be used in masonry cements?Ch. 7 - How does the fineness of the cement affect the...Ch. 7 - Explain how Portland cement should be stored.Ch. 7 - What natural aggregates are used in making...
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- What is the approximate axial force in girder EF of the frame shown? Use the portal method. a. 32 kN b. 60 kN c. 12 kN d. 20kNarrow_forwardDetermine the vertical reaction at C for the beam shown and support settlements of 1" at B and ¼" at C. a. 27.0 k b. 28.3 k c. 43.7 k d. 21.0 karrow_forwardWhat is the horizontal reaction component at D for the frame shown? a. 75.00 kN b. 91.67 kN c. 70.31 kN d. 4.69 kNarrow_forward
- Find the vertical reaction at D for the frame shown and a settlement of 50 mm at support D. a. 80.7 kN b. 112.5 kN c. 144.3 kN d. 6.51 kNarrow_forwardDetermine if the W14x 22 beam will safely support a loading of w= 1.5 kip/ft. Theallowable bending stress is oallow = 22 ksi and the allowable shear stress is Tallow = 12 ksi.arrow_forwardWhat is the fixed end moment FEMAB for the beam shown with a settlement of 1.2 in. at support B? a. -102.7 ft-k b. -95.2 ft-k c. -307.7 ft-k d. 279.8 ft-karrow_forward
- Suggest an optimum footing size and shape (minimum area footing), if the vertical loading (includingthe weight of the footing) is 40 kips, and the soil has the following characteristics: c=200 psf, φ=370,and γ=120.0 lb/ft 3. Constraints of the solution are: the maximum dimension of any side of thefooting is 10 ft, and the depth of embedment is between 2 and 4 ft.arrow_forward15.6 A mountain stream flows over a rocky streambed. Apply the Limerinos and Chezy equations to calculate the discharge. The stream has an intermediate rock size d 84 of 30 cm, an average depth of 2.1 m, a slope of S = 0.0037, and a width of 52 m. In SI units, what is the discharge? a. 85, b. 120, c. 160, d. 240, or e. 410.arrow_forwardThe maximum bending moment for the beam shown is positive. a. True b. Falsearrow_forward
- I have complete structural and architectural plans for a 3-storey residential house, and I need help computing the quantity of materials per floor for concrete, masonry (CHB walls), and reinforcing steel bars. Below are the extracted values from the plans. Can you please guide me step-by-step per floor on how to compute the following: Concrete volume for footings, columns, beams, slabs, and stairs CHB wall quantity in pieces (after deducting openings) and mortar volume Rebar estimates per structural elementarrow_forwardI have structural and architectural plans for a 3-storey residential house, and I need to compute the quantity of materials for concrete, masonry (CHB walls), and reinforcing steel bars. Based on the following extracted values from the plans, can you help me compute the estimated material quantities? ps. i just want to make sure my answer were correct.arrow_forward11.16 A circular billboard with a diameter of 4 m is exposed to the wind. Estimate the total force exerted on the structure by a wind that has a direction normal to the structure and a speed of 20 m/s. Assume T = 10°C and p = 101 kPa absolute. Use Table 11. in §11.3arrow_forward
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