Unit Conversion

1 psf           =  4.89  kg/m2
1 kips/ft       =  1489  kg/m
1 kips-ft       =  138   kg-m
1 psi           =  0.070 ksc
1 ksi           =  70    ksc
1 kips          =  453   kg
1 in2           =  6.45  cm2
1*N*sqrt(fc')   =  0.2652*N*sqrt(fc')