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PLEASE HELP! Civil Engineering assdignment - Science and materials

Stuck on one of the tasks for my Science and materials for construction and the built environment assignment. If anyone could provide me with any help for this task please do get in touch. TASK 2: A structural engineer is looking for a material to design a structural member in compression. The engineer needs to compare the behaviour of timber, steel and reinforced concrete structural members under compression. If steel has a maximum allowable compressive strength of 300 N/mm^2, concrete 40 N/mm^2, reinforced concrete 48 N/mm^2 and timber class C24 parallel to the grain 21.0 N/mm^2, what is the maximum load a test piece of each material of dimensions 50mm x 75mm made from each of these materials can carry and what would be an acceptable factor of safety.
Reply 1
the load for the steel is = 1.125*10^6 N .
The load for the concrete is = 0.15*10^6 N ,
R.F concrete is = 0.18*10^6
Tmiber is = 0,078*10^6

as you can see the maximum load is for the stee

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