Question: A building has the floor plan shown below. It consists of 4 typical floors and a roof. The structural system is cast-in-place reinforced frame with precast concrete rectangular beams and 200-mm thick slab floors.
The building is constructed to be used as office space. All floors are carrying 120-mm thick sand fill and 20-mm thick tiles. In addition, the slab carries partitions made of 80-mm thick hollow blocks having 10-mm thick plaster on each face. The height of the partition for each floor is 4 m. Mechanical dead load was specified as 1.2 kN/m2. Assume the roof load is the same as the remaining floors without the partitioning and the roof live load is given as 1 kN/m2.
a. Determine the total floor and roof dead loads per meter square
b. Determine the floor live load as per ASCE7-05 code
c. Draw the total service load (DL+LL) on the beams shown in bold with magnitudes and dimensions (on typical floors)
d. Determine the axial load on column A1 in the second floor including live load reduction
Assume the densities are as follows: γconcrete = 24 kN/m3, γsand = 18 kN/m3, γtile = 20 kN/m3, γplaster = 22 kN/m3, γblocks = 12 kN/m3
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