The rectangular gate in Fig. B is hinged at B and rests on a smooth floor at A, the horizontal component of the reaction at A therefore being zero. The gate if 5 ft wide perpendicular to the paper. Determine the vertical component of the reaction at A and the horizontal and vertical components of the reaction at B for the following sets of conditions: (a) x = 6 ft, y = 8 ft, z = 0 ft; (b) x = 6 ft, y = 8 ft, z = 4 ft, (c) x = y = 8 ft, z = 10 ft, (d) x = 3 ft, y = 4ft, z = 50 ft. Draw the free body diagram and show complete solution with explanation.

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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.