please help with this construction question im really stuck!! question is:- a reinforced concrete beam is to be 700mm deep. the minimum width of beam is to be used and 20mm size aggregate has been specified. three 25mm diameter bars have been calculated for tension reinforcement and three 16mm diameter bars have been calculated for compression reinforcement. shear reinforcement will consist of 100mm diameter stirrups. The level of exposure requires 40mm cover to the reinforcement. sketch the beam cross-section, detailing the reinforcement if the beam is simply supported at its ends. i have no idea where to start with this one!!