Orange County NC Website
Browse       Search
<br /> 024110.5 – SELECTIVE DEMOLITION <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 />required. To ensure that accurate quantities of work performed are included in this comparison, <br />the Contractor must provide specific documentation of work type, quantities, and confirmation that <br />work was warranted. Documentation can include review of existing conditions or work performed <br />(prior to covering) by the Contractor and Engineer (or Owner’s representative) with agreed upon <br />quantities photographed and documented in the Engineer’s site visit report. If the Engineer is not <br />available, the Contractor is responsible for photographing the damaged/deteriorated <br />materials/conditions and photographing the repaired/replaced materials (with scale to allow for <br />confirmation of measurements) of the material and submitting these to the Engineer at the next site <br />visit or progress meeting. If approved by the Engineer, it may be acceptable to stockpile removed <br />deterioration component/material (when applicable) until confirmation by the Engineer can be <br />made. Payment for work performed (or consideration of work performed toward the estimated <br />quantities) may not be provided without proper documentation. <br /> <br />O. Raise all penetrations as needed to finish a minimum of 8″ above the finished roof surface. <br /> <br />P. Do not burn or bury materials on site. <br /> <br />3.03 METAL DECK REPAIR/REPLACEMENT <br /> <br />A. Metal Deck Repair: Deteriorated or damaged areas greater than 2″ and less than 12″ square or <br />diameter or less shall be repaired with either 16 gauge steel sheet or two layers of 22 gauge metal. <br />Sheet shall be sized to extend a minimum of 6″ on all sides beyond the size of the deficient area. <br />Secure sheet to top of existing deck flange with fasteners, minimum 3 per side equally spaced. <br /> <br />B. Metal Deck Replacement: Deteriorated or damaged areas greater than 12″ but less than 24″ square <br />or diameter shall be repaired with decking. Decking shall be sized to extend a minimum of 12″ on <br />all sides beyond the size of the deficient area. Nest new deck and secure to existing deck with <br />fasteners, minimum 3 per side equally spaced and one in each flute. <br /> <br />C. Metal Deck Replacement: Deteriorated or damaged areas greater than 24″ square or diameter shall <br />be repaired with metal deck. Replacement deck shall extend a minimum of three spans. <br />Permanently anchor units to joist and fasten side laps by the end of each working day. At a <br />minimum, fasten every other rib at all supports in the field and 12″ o.c. along laps. At a minimum, <br />fasten every rib at all supports and 6″ o.c. along laps at perimeters and corners. <br /> <br />D. Immediately after placement and alignment, and after correcting inaccuracies, permanently fasten <br />steel deck units to structural supports and to adjacent deck units with screws at 8″ on center. <br />Attachment of adjacent deck units by button-punching is prohibited. <br /> 3.04 METAL DECK RESTORATION <br /> A. Wire brush and sweep all loose rust from affected area. Areas of deck evidencing pinholes shall <br />be replaced in accordance with the requirements of this Section. <br /> <br />B. Install one coat of rust inhibitor to affected area. <br /> <br />C. Allow area to dry before proceeding with roof system installation. <br /> <br />END OF SECTION 024110 <br />DocuSign Envelope ID: 89558C18-938A-4BFF-B14A-A2214E8AA5DD