22.214.171.124.1 Elevator Guide-Rail Load Distribution
(a) Conventional Standard Designs. The seismic forces shall be assumed to be distributed one-third to the top guiding members and two-thirds to the bottom guiding members of cars and counterweights.
(b) Nonstandard Designs. Where the design of the car or counterweight employs either special construction or location and quantity of guiding members, the formulas and methods of calculation of the load distribution, and the resulting stresses and deflections, do not generally apply and shall be modified to suit the specific conditions and requirements in each case.