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Table 6 Conversion chart for the US customary to the equivalent SI units

From: Investigation of the performance of grouted couplers in vehicle impacted reinforced concrete ABC bridge piers

US Customary

SI Unit

1 ksi

6.89 MPa (kN/mm2)

1 ksi

6894.76 kN/m2

1 kip-in

0.113 kN-m

1 kip

4.45 kN

1 lbs

0.00445 kN

1 mph

1.61 km/hr

1 ft lb./sec

0.00136 kN-m/sec (1.36 N-m/sec)

1 in

0.0254 m (25.4 mm)

1 ft

0.3048 m (304.80 mm)

1 pci

271.4471 kN/m3

1 psi

6.8947 kN/m2