Determine the maximum bending moment capacity of a 100mm×200mm wood joist if its allowable bending stress is 19.30MPa

Q: c) moment of inertia about the horizontal centroidal axis for timber. Enter your answer in mm4 to 1…

A: The cross section figure of the given beam is shown in the above figure. Elastic modulus of wood =…

Q: What is the size factor for compression of 2x4 dimension lumber? CF=_______

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Q: A composite beam is under external loads as shown below. Draw the internal shear force and bending…

A: Length of span= 3.6 mUdl= 40 kN/mPoint load = 75 kN

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Q: The square cross section of a reinforced concrete tie is 8 in. x 8 in., and it is reinforced with 8…

A: Here is the calculation of the area of steel and gross area:

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Q: ot boon sT Consider an inner beam-column joint in the ground floor roof of a eight storey building…

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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.