EK552
Strength and stiffness does not appear to be sensitive to the spacing of the ducts.
EK327
For reinforced slabs on ground, control joint spacing normally varies from 9 m to 24 m. The percentage of reinforcement increases with an increase in joint spacing.
EK326
Control joint spacing for plain (unreinforced) slabs on ground should not exceed: 24 slab thicknesses for concrete made with less than 19 mm maximum size coarse aggregate. 30 slab thicknesses […]
EK118
A reinforced concrete beam will initially behave elastically throughout, as the applied uniform moment is increased. When the limiting tensile strain for the concrete is reached a crack will form, […]