# Help i hav no idea how to work out the design load

1. Nov 22, 2009

### beezz

help i hav no idea how to work out the design load!!!

1. The problem statement, all variables and given/known data
A typical floor layout of a reinforced concrete office building is shown in Figure 5. The
reinforced concrete floor supports a permanent dead load G (ceiling services, floor finish and
partitions, but not self-weight) of I.OkPa and superimposed live load Q of 3.0kPa. The slab
thickness is I60mm and beams are 450mm deep and 300mm wide as shown in Section A-A
in Figure 5. The concrete characteristic compressive strength (f"c) is 32MPa and steel yield
strength (fsy) is 500 MPa. For the beams, the cover to the ligatures is 30mm.

2. Relevant equations
(a) Determine the design load in kN/m based on the given loads and using an appropriate
(b) Find the maximum design negative and positive moments along the beam using the
simplified method;
(c) Find the maximum shear forces along the beam;
(d) Design the flexural reinforcement required to satisfy the maximum negative and positive
design moments as calculated in part (b). Use N20 bars for the flexural reinforcement
(curtailment details of reinforcement is not required);
(e) Design the shear reinforcement to resist the maximum design shear force. Use NI2 for
shear ligatures.

3. The attempt at a solution
i atempted it and hav looked at the solution but cant seem to work out my dead loads
heres the solution for part A

w*= 1.2G+1.5Q = 1.2(11.5 _2.1+3) + 1.5 *9 = 33.4 kNm

#### Attached Files:

• ###### untitled.jpg
File size:
26.4 KB
Views:
64
Last edited: Nov 22, 2009