Architectural Drafting and Design (MindTap Course List)
7th Edition
ISBN: 9781285165738
Author: Alan Jefferis, David A. Madsen, David P. Madsen
Publisher: Cengage Learning
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Chapter 30, Problem 30.11Q
To determine
The smallest floor joist size required to support the bedroom of span
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calculate the number of hours needed to frame a one-story house 36' long, in which 2 x 6 x 16 joists will be placed 16" OC?
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A piece of wood 305mm square and 3.0m long, weighing 6288.46 N/m3, is submerged vertically in a body of water, its upper end being flush with the water surface. What vertical force is required to hold it in position in terms of kN?
A piece of timber 3m long and having a 30cm x 30cm section is placed vertically in a body of water. If the weight of the timber is 6.5kN/m3 will it float upward? Why?
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Architectural Drafting and Design (MindTap Course List)
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- A vertical sliding gate 20 ft wide and 30 ft high is submerged in 40 ft of water, has coefficient of friction between its guides and edges of 0.20 and weighs 6 tons. What is the vertical force required to just lift this gate?arrow_forwardThe woman is trying to move the crate of weight W by pulling on the rope at the angle θ to the horizontal. Find the smallest possible tension that would cause the crate to slide and the corresponding angle θ.arrow_forwardDraw the shear and bending moment diagrams of the beam in the figure. show all of calculations and also report a summary of your findings ?arrow_forward
- True or false,In designing an open web steel joist we use span to death ratios to determine the minimum depth required?arrow_forwardA living room measuring 7m x 4m uses 2"x2" ceiling joists The total board foot of ceiling joists that is required to cover the entire room is 176.66 bd. ft. If there are already 19 pcs. of 2"x2"x14' ceilinig joists available at the site, how many pieces more of 2"x2"x12' are needed to cover the entire ceiling joists requirement of the room?arrow_forwardPlease provide detailed explanation, thank you! A timber 15 cm square and 5 m long has a specific gravity of 0.50. One end is hinged to the wall and the other is left to float in water (see figure). For a = 60cm, what is the length of the timber submerged in water?arrow_forward
- The box beam below is constructed from four boards that are fastened together using nails spaced along the beam every 2in. If each nail can resist a shear of 50lb, determine the greatest shear V that can be applied to the beam without causing failure of the nails. Give your answer in pounds.arrow_forwardThree loads act on an arch as shown below. What should be the distance d1, d2 (in ft)? What is the maximum force in the arch (in lb)?arrow_forwardA piece of timber 3m long and having a 30cm by 30cm section is placed in a body of water in a vertical position. If the timber weighs 6.5 KN/m³ what vertical force is required to hold it with its upper end flush with the water surface.arrow_forward
- a) With a neat sketch explain the constructional features of a crane fixed to a pillar and can be rotated 360 degrees.arrow_forwardSolve the trusses using joint method include all tabulated summary of answers.arrow_forwardPlace 4 pcs dressed plank, size 40mm x 200 mm x 6 m side by side and thereby forming a beam. Using the biggest dimension to be the depth, find the moment of inertia. A. 105.57 x 10^6 mm^4 B. 106.67 x 10^6 mm^4 C. 107.67 x 10^6 mm^4 D. 108.67 x 10^6 mm^4 What is the "c" distance for the formed section? A. 30 mm B. 120 mm C. 100 mm D. 80 mm If the allowable bending stress of the plank is 8.30 MPa, what is the largest moment that can be resisted by the beam? A. 8.853610 kN-m B. 9.853610 kN-m C. 10.55190 kN-m D. 11.55190 kN-marrow_forward
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