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Consider the following statements related to the advantages of concrete sleepers : 1. Concrete sleepers can generally be mass-produced using local resources. 2. Concrete sleepers are not suitable for better packing. 3. Concrete sleepers have a very long life span. 4. Concrete sleepers have no scrap value. Which of the above statements is/are correct?
A round flange bearing is fastened to the machine frame by means of 4 cap screws. The angle made by central axis of bolt 2 and horizontal is θ. Also the radii of flange and pitch circle are a & b respectively. Given: Sum of squares of distance of bolts from axis of tilt is 2a² +b². Are all the four bolts under equal effective tensile load?
A round flange bearing is fastened to the machine frame by means of 4 cap screws. The angle made by central axis of bolt 2 and horizontal is θ. Also the radii of flange and pitch circle are a & b respectively. Given: Sum of squares of distance of bolts from axis of tilt is 2a² +b². Determine the angle θ so that the force in the bolt 1 has maximum value.
A round flange bearing is fastened to the machine frame by means of 4 cap screws. The angle made by central axis of bolt 2 and horizontal is θ. Also the radii of flange and pitch circle are a & b respectively. Given: Sum of squares of distance of bolts from axis of tilt is 2a² +b². Which bolt is under maximum stress if dowel pins are used to relieve cap screws from shear stress?
Find the approximate thickness of web if b is 0.5d, d is 270mm, d/h ratio is 0.85, h is 315mm, adopt effective depth, d = 275mm overall depth , h is 320mm, width of flange of 160mm and Average thickness of flange is 70mm since sloping flanges are used, increases the flange thickness by 20 percent?
As per IS : 800, for compression flange, the outstand of flange plates should not exceed (where t = thickness of thinnest flange plate)
A flange of radius 200mm is fastened to the machine screw by means of four cap screws of pitch circle radius 150mm. The external force P is 20kN which is loaded at 160mm from the machine screw. There are two dowel pins to take shear load. Determine the maximum effective tensile force acting on the bolt. The four bolts are equally spaced radially.
A flange of radius 200mm is fastened to the machine screw by means of four cap screws of pitch circle radius 150mm. The external force P is 20kN which is loaded at 160mm from the machine screw. There are two dowel pins to take shear load. Determine the core diameter of cap screw if permissible tensile stress in cap screw is 40N/mm².
In a marine flange coupling, the thickness of flange is taken as
For unstiffened flange of a beam in flexural compression, the maximum allowable outstand is equal to (Where t is a thickness of flange)