What is the correct Manhole Ladder Dimension?

Please review Standard Drawing S1 with respect to conformance to WorkSafeBC.

Where do I find Parts 1 and 2 of the Instructions to Tenderers (IT)?

Instructions to Tenderers - Part I is a free document, available on our website under References - Forms and Templates Volume II of the MMCD contains the Instruction to Tenderers Part II

Is 120mm concrete sidewalk thickness acceptable for passenger vehicle and service vehicle loading?

There is no standard MMCD cross section for commercial grade rollover curb. General guidance on sidewalk construction and maintenance is available on Federation of Canadian Municipalities website under INFRAGUIDE.