H.W. #1: The bar shown has a 200*100 mm rectangular cross section. Determine, a) The normal and shearing stresses on plane a-a. b) The maximum normal and shearing stresses in the bar. Im 2m 2m 300 KN 250 KN T 200 AN H.W.#2: A steel bar with a 4*1 in. rectangular cross section is being used to transmit an axial tensile load, as shown. Normal and shear stresses on plane a-a of the bar are 12 ksi tension and 9 ksi shear. Determine the angle and the applied load P.

Q: The Link AB must be made of steel with a maximum normal stress of 450 Mpa. Any stress above that…

A:

Q: a) Find minimum diameter nceded if the allowabe shear stress is 140 Mpa and the otation of point A…

A: Solution:-  We know that torsion equation is, TJ=τr=GθL here, net torsion is , T=T3-T1+T2  =10-4+2…

Q: A machine member is subjected to forces as shown in Fig. B 300- 3 kN-m 1.5 kN-m 20 kN Determine the…

A: A )  To find : Determine the stresses ? A problem of solid mechanics.

Q: The bolt in the figure below is 1 in. in diameter. If the load P is 10 kips, determine the average…

A: Given-Bolt diameter= 1 inchLoad, P=10kips

Q: H.W. #4: A pin connected truss is loaded and supported as shown, determine: a) The normal stress in…

A: Determinea. The normal stress in member DE if it has cross sectional area of 750 mm2. b. The minimum…

Q: A tension member consists of a 50-mm-diameter brass (E = 100 GPa) bar connected to a 32-mm-diameter…

A: Given data : Tensile load (P)=50 KNBrass Diameter of brass (dB)=50 mmLength (LB)=1.5 mModulus of…

Q: 1. Draw the axial force diagram of the rod. The diameter d=10mm, F=5kN. E=210GPa. Determine the…

A:

Q: Calculate the maximum tensile and compressive stresses in the section of BC of the beam. A 0.5 in…

A: Determine the maximum tensile and compressive stress in the section BC.

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.