Confining pressure 1 kPa 5 kPa 10 kPa Test Axial load at failure 1 15 kPa 21.5 kPa 3 29 kPa (a) Plot the results of these 3 tests as Mohr circles on the using the following graph paper or your computer. This means you either need to: Be sure to label the axes and indicate which test is which. (b) Given this information graphically determine the Coloumb failure envelope, the coefficient of internal friction and the strength of the rock. (c) You have estimated that the load of the power plant will induce a normal stress of 15 kPa and a shear stress of 10 kPa. Will the rock be able to withstand this load? Explain using your Mohr circle diagram.

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Stair construction and layout

Stair is a type of vertical transportation in a building which consist of a series of steps in a flight of stairs that enable the vertical movement of people and materials from one floor to another. A staircase consists of steps that comprises of riser & tread, handrail, baluster, stair stringers, newel post and waist slab. The construction of staircase with all the components is termed as stair construction. A staircase is an enclosure that contains the entire stairway. The materials used for the construction of stairs are bricks, reinforced cement concrete, stone, lumber, steel and a combination of these materials.