question archive A floor system of an office building consists of a grid of beams supported by columns, as shown in the attached Figure Q1
A floor system of an office building consists of a grid of beams supported by columns, as shown in the attached Figure Q1
Subject:Civil EngineeringPrice: Bought3
A floor system of an office building consists of a grid of beams supported by columns, as shown in the attached Figure Q1. An allowance of 1 kPa has been made for the partition walls that are not deflection-sensitive. Building columns are 400 mm x 400 mm and beams are 400 mm (width) x 500 mm (depth). The depth of the slab is 150 mm.
(a) Check for a corner slab (A) whether the slab depth of 180 mm satisfies the deemed to comply span-to-depth ratio specified in AS 3600 for a limiting total deflection, /Lef= 1/250. (5 marks)
(b) Design the reinforcement in the primary direction for the corner slab A. Use the design data given below. Consider moderate degree of crack control. (7 marks)
Design Data:
Compressive strength of concrete, f'c=40 MPa
Unit weight of reinforced concrete, ?rc= 25 kN/m3
Yield strength of steel reinforcement, fsy=500 MPa
Slab depth, Ds= 150 mm
Concrete cover = 25 mm
Superimposed dead load= 1 kPa
Live load = 3.0 kPa
Steel reinforcement: N12 bars
