(a) All structures used in connection with amusement devices shall be so designed and constructed as to carry safely all loads to which such structures may normally be subjected.

(b) All amusement devices shall be designed, constructed and installed so as to withstand any normal stresses to which they may be subjected.

(c) Before being used by the public, amusement devices and temporary structures shall be so placed or secured with blocking, cribbing, outriggers, guys or other means as to be stable under all operating conditions.