A stone weighs 392.4 N in air and 196.2 N in water. Compute the volume of stone and its specific gravity.

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What volume of solid material is present in one cubic meter of sandstone if the porosity is 20% ?

2. The compound bar given in figure, composed of the three segments shown, is initially stress free. Compute the stress in each material if the temperature drops 25 °C. Assume that the walls do not yield and use the following data: A (mm?) a (1°C) E (GPa) Bronze segment 2000 19.0 x 10-6 83 Aluminum segment 1400 23.0 x 10-6 70 Steel segment 800 11.7 x 10-6 200 800 mm 500 mm– +400 mm→ Aluminum Steel Bronze

the composite area shown in the figure below is composed of two rectangles. use b = 4.97m., h = 3.73 m. and t =1.48m. determine the radius of gyration about the indicated x-axis.

Describe with examples the young’s modulus, shear modulus and bulk modulus.

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The size of the brick is 190 mm x 90 mm x 90 mm and the mortar is 8 mm thick with a ratio of 1: 4. Calculate the number of bricks for 1 meter cube:

Calculate the stress of foundation stone which has an ultimate stress of 50 N/mm2 in compression, if the factor of safety is to be 10.