Installation Check List For Enclosed Bus Duct System Method Statement for HVAC Ductwork Insulation and Acoustic Lining Installation Check List For Enclosed Bus Duct SystemInstallation-Check-List-For-Enclosed-Bus-Duct-SystemDownload By Md Abu Zaed Khan Hello, this is Engr. Zaed Khan Planning Engineer, Associate member of Society of Engineers UAE. Expert in construction project planning, FIDIC red book, computation of extension of time claim, Contract agreement and contractual letters. View all of Md Abu Zaed Khan's posts.