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The below wooden double overhanging beam is under a uniformly distributed load W. The wood is weak along the orientation of the grain (or wood cell fibres) that makes an angle of 30° with the horizontal (see figure). The maximum shear stress on a plane parallel to the grain that the wood can sustain is t,max = 5 MPa, and the maximum normal stress of wood is omax = 25 MPa. The Young modulus of this wood is E=15 GPa....
An overhanging steel beam is used to carry a uniformly distributed load over a 2-metre length as shown. The yield stress of steel is ơyield-350 MPa. Check if the cross section of the beam at section a-a is safe against yielding, (a) using the maximum distortion energy criterion (Von Mises criterion) (b) using the maximum shear stress criterion (Tresca) 15 mm w-12 kN/m 15 mm 120 mm 2000 mm 15 mm 3000 mm 3000 mm 6000 mm 60 mm An...
PLEASE SEE TEXT ANSWERS AT THE BOTTOM. I HAVE WORKED OUT PART A. PLEASE COMPLETE REST OF Q. ANSWERS: B) 2.59 kN, 0.473 MPa C) 399 A simple wooden beam is constructed by bonding four 12.5 x 75 mm planks together with an adhesive as shown in Fig 1.1. load P Adhesive joint Fig. 01.1 - Cross-section through Constructed Beam The beam is Em long and must carry a load P as shown in Fig. 01.2. load P 2.5m 2.5m...
A wood beam (1) is reinforced on its lower surface by a steel plate (2) as shown in the figure. Dimensions of the cross section are b 1 = 220 mm , d = 385 mm , b 2 = 190 mm , and t = 25 mm . The elastic moduli of the wood and steel are E 1 = 12.5 GPa and E 2 = 200 GPa , respectively. The allowable bending stresses of the wood and steel...
Question 2 (25 marks) A square wood platform of side-length L = 2.4 m rests on masonry walls. The deck of the platform is constructed of 4 cm thick planks supported on two beams which are 2.4 m long. The beams have a width of 100 mm and height of 150 mm and are supported at their ends by the walls. The structure is designed to support a uniformly distributed load, wA (kN/m2), acting over the entire top surface of...
A square wood platform of side-length ? = 2.4 m rests on masonry walls. The deck of the platform is constructed of 4 cm thick planks supported on two beams which are 2.4 m long. The beams have a width of 100 mm and height of 150 mm and are supported at their ends by the walls. The structure is designed to support a uniformly distributed load, ?? (kN/m2), acting over the entire top surface of the platform. The tensile...
Chapter 8, Supplemental Question 067 (Go Tutorial) The simply supported beam shown carries a uniformly distributed load of w 28 kN/m on overhang BC. The beam is constructed of a Southern pine [E 12 GPa] timber that is reinforced on its upper surface by a steel [E-200 GPa] plate as shown. The beam spans are LAB-4.5 m and Lec-1.25 m. The wood beam has dimensions of bw-230 mm and dw-310 mm. The steel plate dimensions are bs - 245 mm...
As shown in Figure 8, the structural member (beam) is 7m long, carries a 2 kN point load, a 1.2 kN/m uniformly distributed load and is supported at points A and B. The beam is constructed from two pieces of steel plate (2 at 80mm x 8mm) that are welded together with 3mm welds. Section properties for the beam are also listed. Given the support reactions as RAv 5.8 kN and RBv 2.2 kN, as well as the shear force...
Problem 2 (30 points): Bored at the swimming pool and without enough solid mechanics to occupy their minds over the summer, engineering students analyze a diving board made from a 50mm x 300 mm wood plank. The diving board is held down at end A by anchor bolts that can be considered as a pinned support. a) Draw the Shear and bending moment diagram for the beam (10 points) b) What maximum permissible load, Pmax, can be exerted on the...
DE = 29 Question 4: Indeterminate Beam Design and Deflection A 2014-T6 aluminium cantilever beam is rigidly fixed to a wall and supported at the free end with a roller support, shown below. The beam is loaded with a distributed load, W, of 10kN/m and a point load, P of 55kN. Both the distributed load and the point load act in the direction shown in the image below. Note, the parameter DE is related to your student number as described...