(1) Inclined conveyance elevator frames and platforms shall:

(a) Be built of metal, a combination of metal and wood or other materials of equal strength;

(b) Have a safety factor of at least 5; and

(c) Be suitably prepared and/or protected from exposure to weather.

(2) Inclined conveyance chassis shall:

(a) Be built of metal, except for the guiding members;

(b) Have a safety factor of at least 5, based upon the conveyance's rated load; and

(c) Have the chassis guiding members retained and/or enclosed in guides so that the chassis cannot be derailed.

(3) Cast iron may not be used in the construction of the conveyance frame or chassis.

(4) A car shall have only one compartment.