Sidewalk Wheelchair Ramp Construction. 1) Portland Cement Concrete for wheelchair ramps shall conform to the applicable requirements of Section M4 and Section 701 of the MassDOT Standard Specifications. FIBERMESH fibers (100% virgin polypropylene, collated, fibrillated fibers) at a rate of 1.5 lb. per cubic yard of concrete shall be added for reinforcement. Installation shall be per manufacturer’s recommendations. 2) Portland Cement Concrete shall be installed on an 8-inch gravel sub-base with a minimum width of five feet six inches (5’6”). Satisfactory forms shall be installed to assist in securing proper alignment. Ramps shall be 6 inches thick and shall be installed in strict compliance with the current AAB/ADA Rules and Standards. 3) In no case shall sidewalk ramps be laid until the gravel sub-base has been inspected and approved. The Holliston Deputy DPW Director or his designated representative shall be notified at least 24 hours prior to any planned sidewalk concrete pour to allow inspection of the gravel sub-base...
