Dear Mr. Amr ,
Good Morning .
While handing over rolling door in Polyethylene project , Consultant engineer informed Eng. Ahmed Elsarngawy our site engineer that he wants the brake system for the door to be wire with hand like a bicycle brake not rope to stop the door while using chain for manual use .
As this not indicated in shop drawing could you advice us if that already included in the door or not, and if not ,is it aplicaple install it and how much it will cost.