Select the incorrect statement

In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively

In a spherical dome the hoop stress due to a concentrated load at crown is

For walls, columns and vertical faces of all structural members, the form work is generally removed after

1% of voids in a concrete mix would reduce its strength by about

The factor of safety for

If nominal shear stress $${\tau _{\text{v}}}$$ exceeds the design shear strength of concrete $${\tau _{\text{c}}}$$, the…

Air entrainment in the concrete increases