Bracing System - Different Assessment Answer

Assignment Task :

A new car display centre is to be built at your local area using a steel frame. The plan and cross section of the structure is shown in Figure 1. 

The centre is to be designed as a steel framed building on reinforced concrete floor using prefabricated steel trusses, supported on columns. The overall dimensions of the centre are shown in Figure 1. The sides of the display centre are cladded with tempered glass attached to the frame. Wind direction is North-South 

(i) Permanent load: 

a) Self-weight: This based on the sections chosen. Details of load per metre length can be obtained from the manufacturer’s specification, see OneSteel.com. Please note that Microstran also has a database of sections to choose from.

The wind load is determined using AS1170.2 and Lecture 3. Please note that the determination of wind load requires a location to be chosen as wind loads are location specific. Therefore, determination of wind loads should be based on the site where your car display centre is to be built. Use the wind load to determine the bracing system. 

(d) Analyse the structure and determine critical design loads for each member and determine the resulting design loads on the structure from all causes by considering the appropriate load factors and load combinations for: 

(i) The members supporting the roof sheeting (purlins) and the wall sheeting (girts);

(f) Use sketches in conjunction with your calculations to enable the marker to visualise your design process. A series of calculations on their own without sketches can be difficult to comprehend. 

(iii) Columns

(iv) The purlins and girts and