Modified PCI Multipliers for Time-Dependent Deformation of PSC Bridges

Table 1

PCI Bridge Design Manual basic multipliers [18].

	Without composite topping	With composite topping
At erection
(1) Deflection (downward) component—apply to the elastic deflection due to the member weight at transfer of prestress	1.85	1.85
(2) Camber (upward) component—apply to the elastic camber due to prestress at the time of transfer of prestress	1.80	1.80
Final
(3) Deflection (downward) component—apply to the elastic deflection due to the member weight at transfer of prestress	2.70	2.40
(4) Camber (upward) component—apply to the elastic camber due to prestress at the time of transfer of prestress	2.45	2.20
(5) Deflection (downward)—apply to elastic deflection due to superimposed dead load only	3.00	3.00
(6) Deflection (downward)—apply to elastic deflection caused by the composite topping	—	2.30