A simply supported girder carrying floor joist shown in Figure, determine the most economical size of girder if it is made of Guijo with allowable bending stress of 21.81MPa and density of 6.87kN/m

Q: A cantilever timber beam with a span of L = 3.6 m supports a uniformly distributed load w. The beam…

A: Using bending stress equation

Q: g) Calculate the magnitude of the maximum bending stress in the beam. Enter your answer in MPa to…

A: Given:Required:Maximum bending stress

Q: A beam section is shown in the figure below is a simply supported over a span of 15m. The beam is…

A: Given:- The length of the beam = 15 m  The beam is reinforced with straight tendons The compressive…

Q: A steel wide-flange section that is 18 in deep is used as a simple beam. If the moment of inertia of…

A:

Q: f) the maximum bending moment in the beam. Enter your answer in kNm to 3 decimal places.

A: Given figure is a simply supported beam. Point load = 3.3 kN, acting at the midspan. Total span…

Q: The joists of a floor in a warehouse are to be selected using square timber beams made of oak. The…

A: the maximum shear stress : The most concentrated shear force is the one with the highest shear…

Q: Wo h A |B L b FIGURE A FIGURE B

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Q: 1. Compute the stress (ksi) in each member of the Warren truss as shown in the figure. Indicate…

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Q: A steel tower of a suspension bridge is designed to stand 250 feet tall. The forces from the cables…

A: The Young modulus of elasticity of steel given is , E=30000 Ksi  the length of steel tower, L = 250…

Q: A cantilever beam QT having rectangular cross sections with varying width h, and varying height b,…

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Q: g) the maximum bending stress in timber. Enter your answer in MPa to 2 decimal places.

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Q: a) Is the beam properly reinforced/over-reinforced/ balanced Determine the factored moment…

A: RC Singly beam,b=500 mmD=700 mmd=600 mmf'c=48 MPaReinforcement: 3-30Mfy=400 MPaφc=0.65φs=0.85Es=2…

Q: A cantilever timber bear supports a uniformly dis width is b = 340 mm and = 210 mm. The allowable…

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Q: Problem 3 For the shown beam. (1) Plot V and M diagram (2) Find the maximum tensile and compressive…

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Q: For a roof truss system of an industrial building, following data is given Span of truss = 6.0 m…

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Q: Problem 6.4 - Determine a) the magnitude and location of the resultant of the distributed load, and…

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Sizing Joists and Rafters

In civil engineering and building construction, joists and rafters are the major components including beams and columns. Almost every structural construction including buildings, skyscrapers, bridges, commercial complexes, and so on makes use of joists and rafters to provide structural integrity to the building. Joists are primarily thick long pieces of metals, concrete, or wood that are used to support the floor and ceiling. On the other hand, rafters form the major component of pitched roofs, which are a series of sloped long pieces extending from a ridged area that makes contact with the plane area of the wall. They account for the load-bearing of the building along with the beams.