Orange County NC Website
Browse       Search
CHAPEL HILL ORANGE COUNTY VISITORS BUREAU August 12, 2020 <br />308 WEST FRANKLIN, CHAPEL HILL, NC <br /> <br />HOLLOW METAL DOORS AND FRAMES 081113 - 6 <br />3. Provide countersunk, flat- or oval-head exposed screws and bolts for exposed fasteners <br />unless otherwise indicated. <br />4. Grout Guards: Weld guards to frame at back of hardware mortises in frames to be <br />grouted. <br />5. Floor Anchors: Weld anchors to bottom of jambs and mullions with at least four spot <br />welds per anchor. <br />6. Jamb Anchors: Provide number and spacing of anchors as follows: <br />a. Masonry Type: Locate anchors not more than 18 inches (457 mm) from top and <br />bottom of frame. Space anchors not more than 32 inches (813 mm) o.c. and as <br />follows: <br />1) Two anchors per jamb up to 60 inches (1524 mm) high. <br />2) Three anchors per jamb from 60 to 90 inches (1524 to 2286 mm) high. <br />3) Four anchors per jamb from 90 to 120 inches (2286 to 3048 mm) high. <br />4) Four anchors per jamb plus 1 additional anchor per jamb for each 24 inches <br />(610 mm) or fraction thereof above 120 inches (3048 mm) high. <br />b. Stud-Wall Type: Locate anchors not more than 18 inches (457 mm) from top and <br />bottom of frame. Space anchors not more than 32 inches (813 mm) o.c. and as <br />follows: <br />1) Three anchors per jamb up to 60 inches (1524 mm) high. <br />2) Four anchors per jamb from 60 to 90 inches (1524 to 2286 mm) high. <br />3) Five anchors per jamb from 90 to 96 inches (2286 to 2438 mm) high. <br />4) Five anchors per jamb plus 1 additional anchor per jamb for each 24 inches <br />(610 mm) or fraction thereof above 96 inches (2438 mm) high. <br />5) Two anchors per head for frames above 42 inches (1066 mm) wide and <br />mounted in metal-stud partitions. <br />c. Compression Type: Not less than two anchors in each jamb. <br />d. Postinstalled Expansion Type: Locate anchors not more than 6 inches (152 mm) <br />from top and bottom of frame. Space anchors not more than 26 inches (660 mm) <br />o.c. <br />7. Door Silencers: Except on weather-stripped doors, drill stops to receive door silencers as <br />follows. Keep holes clear during construction. <br />a. Single-Door Frames: Drill stop in strike jamb to receive three door silencers. <br />b. Double-Door Frames: Drill stop in head jamb to receive two door silencers. <br />D. Fabricate concealed stiffeners, edge channels, and hardware reinforcement from either cold- or <br />hot-rolled steel sheet. <br />E. Hardware Preparation: Factory prepare hollow metal work to receive templated mortised <br />hardware; include cutouts, reinforcement, mortising, drilling, and tapping according to the Door <br />Hardware Schedule and templates furnished as specified in Division 08 Section "Door <br />Hardware." <br />1. Locate hardware as indicated, or if not indicated, according to ANSI/NAAMM- <br />HMMA 861. <br />DocuSign Envelope ID: 775B89AF-3514-4D9E-B148-2FDE4EFF16C2