Requirement: Check the adequacy of the following: 1. Beam 200 mm x 300 mm For Flexure, Shear, and Deflection Given: 1. Combined dead load and live load = 4.88 kPa (excluding the weight of beam and girder) 2. Weight of wood = 7.5 kN/m3 3. Fb = 13 MPa 4. Fv = 1.36 MPa 5. E = 11030 MPa 6. Allowable deflection = 1/360 of the span

Q: Directions: Check the safety of the typical reinforced concrete tee beam used to support the…

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Q: under the following boundary conditions (x = 0, y = 0); (x = L, y = yMax). what kind of beam is…

A: Beams can also be described with their boundary conditions. In the given question,  When x=0…

Q: Determine the numbers of rebars required for a RC beam (h=400mm, b=700mm) carrying a factored moment…

A: Given  b= 700 mm  h= 400 mm  Cc = 40 mm, db = 20 mm , ds = 10 mm  Characteristic strength of…

Q: Question 24 sketches of cross sections including bar sizes, arrangement, and spacing. Assume…

A: Given data;  assume concrete weight of rectangular…

Q: 1. A 100mm x 200mm timber beam has a span of 4.0m and carries a uniform load of 15kN/m. including…

A: Given data, Span of beam, L = 4 m Uniform distributed load acting on the beam, w = 15 kN/m Depth of…

Q: the maximum shear stress in the wood.  Vmax=3530.8 N, Iz=287239583.3 mm4 Answer: 0.2017MPa

A: Given data Vmax.=3530.8 N, Iz=287239583.3 mm4 width, b=40×2=80mm

Q: Determine the nominal flexural strength M, for the beam shown in the figure below. Assume that the…

A: Given information: Characteristic strength of concrete = f'c=4000 psi=4 ksi Characteristic strength…

Q: 6.96.9 mm long simply supported wood beam carries a uniformly distributed load of 10.810.8 kN/mkN/m,…

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Q: aminated wood beam consists of eight 2.25 in. × 5.25-in. planks glued together to form a section b =…

A: Maximum shear force is τmax≥VmaxQItQ=5.25×9×92I=5.25×18312so,V≤1105.25×183125.255.25×9×92V=6930lb

Q: Problem 6.3 A short column is made by nailing four 1 x 4-in. planks to a 4x4-in. timber. Using an…

A: Given data : Allowable stress = 600 psi To Find : Determine the largest load P that can be applied…

Q: Trace the load, draw FBD and calculate support reactions for the following elements: Beam B2 Beam…

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Q: A simply supported wood beam of length L = 10 ft carries a concentrated load P at midspan, as shown.…

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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.