Q3:-The uniform 10 kg ladder in figure below rests against the smooth wall at B, and the end A rests on the rough horizontal plane for which the coefficient of static friction equals 0.3. Determine the angle of inclination of the ladder and the normal reaction at Bif the ladder on the verge of slipping. Bloky 4m

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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.