If the width of a pavement slab is 7.5 m, thickness 20 cm and working stress 1400 kg/cm 2 , spacing of 10 mm tie bars for the longitudinal joint, is

If the width of a pavement slab is 7.5 m, thickness 20 cm and working

1.	If the width of a pavement slab is 7.5 m, thickness 20 cm and working stress 1400 kg/cm 2 , spacing of 10 mm tie bars for the longitudinal joint, is
A.	10 cm
B.	20 cm
C.	30 cm
D.	40 cm
Answer» D. 40 cm