To scale the stiffness of the stringers of the specimen a stiffness parameter ‘Γ' was used.
This parameter incorporated the MOE, moment of inertia (I) and span lengths (L) of the field bridge and the specimen, the actual values for these properties were 8.27 GPa (1,200 ksi), 1.1x109 mm4
(2730.67 in4) and 4369 mm (172 in.) respectively. Using this stiffness parameter and the ratio of load applied to the model and load applied to bridge 101 the stringer dimensions could be calculated.