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<br />077200.4 – ROOF ACCESSORIES <br /> <br />Project Manual for Whitted Building Roof Replacement <br />Orange County, Hillsborough, NC <br />Prepared by Atlas Engineering, Inc., 551-A Pylon Drive – Raleigh, NC 27606 <br />May 2022 <br /> <br />3.02 ROOF HATCH SAFETY RAIL <br /> <br />A. Measure curb to ensure proper fitting. <br /> <br />B. Set curb faming gasket around roof opening and tighten to fit opening. <br /> <br />C. Install the corner posts and bolt to frame. <br /> <br />D. Install cross rails into clamps and level adjust. <br /> <br />E. Follow the manufacturer’s instructions and recommendations. <br /> <br />3.03 CEILING PANEL AND CEILING OPENING FRAMING <br /> <br />A. Location to be coordinated on site and coordinated with installation of a new roof hatch. <br /> <br />B. Remove 4’ by 4’ grid of ceiling tile and modify ceiling tile hangers. Install new ceiling tile <br />hangers and ceiling tiles as necessary. <br /> <br />C. Remove the existing hard ceiling and attic floor joist structure to accommodate the <br />size/installation of the new ceiling access panel. <br /> <br />D. Frame the hard ceiling opening with wood/metal framing/blocking per the design drawings and <br />section 061140. <br /> <br />E. Install new ceiling access panel in strict accordance with the manufacturer installation <br />instructions. <br /> <br />F. Install metal stud framing and drywall to create a chase from the existing drop ceiling level to the <br />underside of the attic floor/hard ceiling level. Install drywall layers over the metal stud framing to <br />maintain existing fire-ratings. <br /> <br />3.04 LADDER <br /> <br />A. Shop drawings shall be submitted to the Owner and the Designer for approval. The ladder shall be <br />constructed and/or coated in such a manner as to resist weathering. All fasteners attaching the <br />ladder to the structure shall have neoprene/EPDM washers. <br /> <br />B. Take field measurements prior to preparation of shop drawings and fabrications. Do not delay job; <br />allow for cutting and fitting if field measurement is not practical. <br /> <br />C. Form work true to line with sharp angles and edges. Comply with AWS standards for procedures <br />of manual shielded metal arc welding, appearance and quality of welds made, and methods used in <br />correcting welding work. Weld continuously, grind flush and make smooth on exposed surfaces. <br /> <br />D. Install work plumb and level with hairline joints and grind welds flush. <br /> <br />DocuSign Envelope ID: 89558C18-938A-4BFF-B14A-A2214E8AA5DD