Fundamentals of Building Construction
6th Edition
ISBN: 9781118138915
Author: Edward Allen
Publisher: WILEY
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Chapter 13, Problem 5RQ
To determine
Write the function of steel reinforcing bars in concrete.
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For the beam shown, where should a uniformly distributed downward live load, wl, be placed to cause the maximum upward reaction at support A? (D, E, and F are the supports, from left to right, to the right of C.)
B
C
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Question 1
1. A solid shaft of 1.55 m is used as a tractor propeller (prop) shaft. The shaft twists through 1.8 while rotating at 900 rpm. The diameter of the shaft is 60 mm and the modulus of rigidity is 85 GPa.
Calculate
1.1 The maximum shear stress in the shaft
1.2 The power transmitted by the shaft.
2. The tractor has undergone minor modifications to increase the transmitted power by 20%. The solid shaft is replaced by a lighter hollow shaft of the same material, with a dimeter ratio of 2:1.
Calculate the suitable dimeters of the hollow shaft.
Chapter 13 Solutions
Fundamentals of Building Construction
Ch. 13 - Prob. 1RQCh. 13 - List the conditions that must be met to make a...Ch. 13 - List the precautions that should be taken to cure...Ch. 13 - What problems are likely to occur if concrete has...Ch. 13 - Explain how steel reinforcing bars work in...Ch. 13 - Explain the role of stirrups in beams.
Ch. 13 - Prob. 7RQCh. 13 - Prob. 8RQCh. 13 - Prob. 9RQCh. 13 - Prob. 10RQ
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- Use Area Moment Method of Beam Deflectionsarrow_forwardDetermine rotations at all the nodes of the beam and reactions at the supports. Assume support 1 and 3 are roller and support 2 is pinned, L1=1.25m, L2=3.75m and w=60kN/m. Please show all working and FBD's where relevant.arrow_forwardspecific gravity of the soil is 1.41 percentage of water content by weight at field capacity and wilting point are 15% and 7% respectively calculate the equivalent moisture content as equivalent depth for 1.2m root zone: A. At permanent wilting point B. At field capacity C. For ready available water Ex 4-3: If the crop consumptive use in Ex(4-2) is 18 m³/donum/day,calculate: A. Irrigation interval in days B. Field water duty assuming 40% losses during irrigation C. Amount of added water to irrigate one donum. n: CFc- IWC) * As *D Lg dn - Q.te A date. A d9 Q IWC- 20% FC-271 Qg-40e D=100cm sec area of the field. Ed=65% 1 hectare As 1.3arrow_forward
- ۰۹:۲۵ ZV9 HW2-C.pdf Dept: Civil Eng. Kerbala HW2 3rd Year (C) Ex 4-1: The field capacity and wilting point as depth equivalent of soil are 178mm and 102 mm respectively. PAD-60% Calculate the irrigation interval if the water consumptive use is 4.5 mm/day. Ex 4-2: The specific gravity of the soil is 1.41 percentage of water content by weight at field capacity and wilting point are 15% and 7% respectively. a) calculate the equivalent depth of moisture content for 1.2m root zone and PAD 70% at permanent wilting point, at field capacity and for readily available water b) If the crop consumptive use is 18 m/donum/day, calculate: Irrigation interval in days, field water duty assuming 40% losses during irrigation and amount of added water to irrigate one hectare. Ex4-3: Using Blaney-Criddle formula, calculate the irrigation interval through specific interval of plant growth according to the following data: . Mean air temperature 25 C percentage of day light hour through the month 8.4% Crop…arrow_forwardDetermine the global stiffness matrix of the beam shown in Fig. 3. Assume supports at 1 and 3 are rollers and the support at 2 is a pinned support. Indicate the degrees of freedom in all the stiffness matrices. EI is constant, w=60kN/m, L1=1.25m and L2=3.75m please explain how the code numbers for global matrix are determined in detailarrow_forwardFor the truss shown in Fig 2, determine the nodal displacement and member forces for all elements of the truss. Assume for each member A = 0.0015 m2 and E = 200 GPa please show all working, relevant FBD's and use ID's indicated in the diagram, if using an alpha numerical in equations please indicate where it is being applied to in the truss.arrow_forward
- Determine the global stiffness matrix of the beam shown in Fig. 3. Assume supports at 1 and 3 are rollers and the support at 2 is a pinned support. Indicate the degrees of freedom in all the stiffness matrices. EI is constant, w=60kN/m, L1=1.25m and L2=3.45m please explain how the code numbers for global matrix are determined in detailarrow_forward= 20 kips = 20 kips B w₁ = 2 kips/ft 20" 12'- 7760 12" 6"arrow_forward= 20 kips = 20 kips B w₁ = 2 kips/ft 20" 12'- 7760 12" 6"arrow_forward
- Calculate ALL nodal displacements and ALL the member forces in the truss. Please use the ID's noted in the truss diagram and draw relevant FBD'sarrow_forwardStructural analysis qarrow_forwardIn the figure, all loads are factored, and the uniform load includes self-weight. Use #3stirrups. fc′ = 4 ksi, and fy = 75 ksi.(a) What stirrup spacing is required at section A?(b) How will this spacing change at section B?(c) Indicate the region of the beam where stirrups are not required.arrow_forward
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What is Concrete?; Author: Practical Engineering;https://www.youtube.com/watch?v=UOHURuAf5iY;License: Standard Youtube License