PART B-STEEL MATERIAL (40 marks)

B. You need to use your student ID to get some parameters. No marks for wrong input values.

A simply supported steel beam is subjected to a point load, P, at the middle of the span.

L/2

L/2

Note, some data is given based on your student ID. a = the last two digits of your student ID. For example, if

ID=12345678, use a-78 to get the below information

• The whole span of the beam, L (m) = 8 +0.05 x a

For example, L = 8 +0.05 × 78 = 11.9 m

The point load (P) is the critical load combination, and it provides the lateral restraint for the beam. The loads

acting on the beam are:

Dead load, G (kN) = 80 +0.1 x a

(The self-weight is already included in this dead load calculation)

•

Live load, Q (kN) = 10

• Upward wind load, W. (kN) = 60

Answer the following questions:

1. Determine the critical shear force and bending moment acting on the beam. (10 marks)

2. Check whether or not the given section in Table 1 satisfies the ultimate limit state for flexure. Knowing

that the beam is not fully lateral restrained for bending, and the shear capacity of the beam is adequate.

(30 marks)

Table 1. The steel section for Part B

The last digit of your student ID

0

1

2

3

4

5

P

6

7

8

9

UB section

310 UB 40.4

530 UB 92.4

530 UB 82.0

460 UB 82.1

460 UB 74.6

460 UB 67.1

360 UB 56.7

360 UB 50.7

360 UB 44.7

310 UB 46.2