SECTION HOLLOW METALWORK. A. PART A and DIVISION 1 of PART B are hereby made a part of this SECTION.

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1 SECTION PART 1 GENERAL 1.01 GENERAL REQUIREMENTS A. PART A and DIVISION 1 of PART B are hereby made a part of this SECTION. B. Examine all conditions as they exist at the project prior to submitting a bid for the work of this SECTION SCOPE OF WORK A. Furnish the following items for installation under the designated SECTIONS: 1. Flush metal doors and pressed steel frames for doors, side lights, transoms borrowed light frames and interior hollow metal window frames: SECTION FINISH CARPENTRY, for all locations. 2. Metal glazing beads for doors and frames: SECTION GLASS AND GLAZING. B. Perform all cut-out work in doors and frames, and furnish and install all required reinforcing therein, from hardware templates provided under SECTION FINISH HARDWARE, and for intrusion alarm system magnetic contacts provided under SECTION ELECTRICAL RELATED WORK SPECIFIED ELSEWHERE A. The following related work is to be performed under the designated SECTIONS: 1. Grouting of hollow metal frames built into CMU walls - SECTION MASONRY. 2. Wood doors: SECTION WOOD AND PLASTIC DOORS. 3. Finish painting for items furnished hereunder: SECTION PAINTING. 4. Furnish and install glass and install glazing beads furnished hereunder: SECTION GLASS AND GLAZING. 5. Building-in of frame anchors: By trade responsible for wall and partition erection. 6. Application of hardware and installation of magnetic door contacts: SECTION FINISH CARPENTRY. 7. Wiring of magnetic door contacts: SECTION ELECTRICAL

2 1.04 SUBMITTALS A. Submit complete shop drawings in accordance with the requirements of SECTION SUBMITTALS. B. Include a complete door, panel and frame schedule, large scale details of door, panel and frame construction, indicating all gauges, reinforcing, cut-outs, anchor clips, and anchors as well as certification from the manufacturer that all UL fireresistive requirements for the required labels have been met. C. The metal doors and frames manufacturer shall submit the following certificate, signed by an officer of the company with the schedule: "I certify that all materials listed on the attached schedules, to be supplied for the, DOUGLAS, MA site comply with specifications in all respects." D. Submit the following samples in accordance with the requirements of SECTION SUBMITTALS. 1. Corner section of typical welded steel frame, in specified thickness, showing reinforcing, welding and prime painting, all as specified hereunder. 2. Corner section of typical flush door construction, as specified hereunder PRODUCT DELIVERY, STORAGE AND HANDLING A. Packaging 1. Doors shall be fully wrapped in corrugated cardboard, single-faced paper 42 pound with a 26 pound liner medium "B" flute, protecting all surfaces of the door. Flute shall run the full height of the door. 2. Wood strips, 3/8 inch by 2 inches commercial grade, finished one side for marking, extending 1/2 inch beyond the top and bottom of the door shall be temporarily applied to the edges of the door. 3. The corrugated cardboard and wood strip shall be held firmly in place by three 3/8 inch by 0.18 steel bands on each door. 4. Wood strips shall be marked clearly giving door type, size, hand, lock preparation and mark number. The metal banding shall not interfere with the marking

3 B. Storage and Protection 1. Properly store and protect this material. Should the priming coat be faulty or rust or scale appear, clean exposed surfaces to bright metal and apply a suitable approved priming coat applied before finish painting

4 PART 2 PRODUCTS 2.01 DOORS A. General - Refer to the Drawings for various types of doors, including sizes and fire resistive label ratings. B. Manufacture - To establish a standard of quality and design desired, specification shave been based on the use of doors manufactured by the Steelcraft Manufacturing Company, Superior Steel Company, or the Republic Steel Corporation. Similar doors of other manufacturers will be considered for approval as an equal, by the Architect, upon receipt of adequate supporting data, including samples if requested and a certificate of compliance as specified hereunder. C. Door construction - Full flush, beveled on hinge and lock edges, fabricated with vertical edge joints completely filled and ground smooth, and meeting the following additional requirements: 1. Faces - 18 gauge stretcher-leveled steel for interior doors and 16 gauge galvanized stretcher-leveled steel for exterior doors. 2. Core - Kraft honeycomb, foamed-in-place polyurethane, (for all exterior doors) or continuous steel reinforcing spaced not more than six inches on center with sound deadening insulation, as standard with the specified manufacturers. 3. Hardware reinforcement - hinges, 8 gauge, minimum; closers, 10 gauge, minimum; locks, 10 gauge, minimum; kick plates, 18 gauge, minimum; all other hardware, 10 gauge, minimum. 4. Top and bottom weather caps - Flush, 18 gauge, minimum, fully welded to exclude water. 5. Glazing beads - Steel or aluminum, as standard with the manufacturer, with edges flush with faces. 6. Galvanizing for exterior doors - As specified hereunder. 7. Treatment and priming - As specified hereunder. 8. Underwriter's Laboratories label doors - Provide all modifications to specified door construction, as required by Underwriters' Laboratories, Inc. and National Board of Fire Underwriters, to meet required fireresistive rating, and equip each door with the appropriate UL label identification plate

5 2.02 METAL FRAMES A. General - Refer to the Drawings for sizes and profiles of frames, related items, and locations of pressed steel frames. Provide welded frames for all locations. B. Materials - Frames, reinforcements, anchors, anchor clips, and related items shall be fabricated from prime quality cold-rolled steel (galvanized for all exterior frames and for interior frames so noted), and where so indicated, all of the following minimum gauges: 1. Interior frames - 16 gauge steel. a. All interior frames at toilet and locker rooms and at kitchen 16 gauge galvanized steel. 2. Exterior frames - 14 gauge galvanized steel. 3. Reinforcing channels, where shown, and in heads of frames 36 inches wide and greater, except where UL label requirements prohibit same - 12 gauge steel for steel frames. 4. Hinge, lock and strike reinforcement - 3/16 inch thick steel for steel frames. 5. Door closer reinforcement - 12 gauge steel for steel frames. 6. Floor clips - 3/16 inch thick steel for steel frames. 7. Frame splines - Same thickness as frames. 8. Glazing beads for steel frames, where indicated - 16 gauge steel. C. Construction 1. Weld construction joints for full depth and width, or weld equivalent splice plates on unexposed faces of frames. Exposed surfaces of welded joints shall be dressed to produce invisible connections. Spot welding shall be used, where practicable. 2. Reinforcements, stiffeners, and base angle clips shall be welded to inside surfaces of frames. 3. The finished work shall be strong and rigid, neat in appearance, and free from warp and buckle. Miters shall be well formed and in true alignment. 4. Locate hardware cut-outs and reinforcing from templates obtained from the hardware supplier. Weld sheet steel dust covers over all cut-outs in frames to prevent contact of mortar with reinforcing and lock strikes. 5. Turn edges of frames to form retainers for anchors, where applicable

6 6. Punch three holes in stop of strike jamb of door frames for application of silencers. 7. Before shipping, provide removable angle spreaders securely fastened to bottom of each jamb; do not remove until frames are secured in place. 8. Frames, for UL label doors, shall be constructed in strict accordance with the requirements of Underwriters' Laboratories for the designated fire rating and shall bear the UL identification plate for same. 8. a. Frames in one-hour rated construction shall be constructed in accordance with, and shall bear the UL label. D. Anchorage 1. Anchor clips for frames in metal stud partitions: 12 gauge steel (3/16 inch thick aluminum for aluminum frames) Zee shaped clips, 1-1/2 inch upturned and downturned legs, of the sizes indicated on the Drawings, shop-welded to frames, for field attachment to metal studs. Anchors for masonry partitions shall be adjustable strap-type. 2. Floor clips for frames - 2 x 2 3/16 inch angles, full width of frame, and provided with two (2) holes for power-driven (or expansion type) attachment to the concrete floors. 3. Spacing of anchors - Provide four (4) anchors, anchoring bolts, or anchor clips, per jamb. For frames greater than 7 feet 6 inches in height, provide five (5) anchors, anchoring bolts, or anchor clips per jamb. Anchors shall be located 12 inches below the head, and spaced equivalent from that point to floor GALVANIZING AND SHOP PRIMING A. All exterior doors, frames, anchors, reinforcing, designated interior frames, and other elated items therefore, shall be fabricated form zinc-coated steel. This coating shall consist of zinc applied by a hot-dipped process on both side of all base metals. B. Zinc shall be applied in such a manner as to provide a ductile coating that is tightly adherent to base metal and which will conform to bend tests conducted in accordance with ASTM Specification A-525. Zinc coating shall be not less than 1.25 ounces per square foot of steel. Following fabrication of exterior frames, touch up all welds with liquid zinc (Galvicon, Z.R.C, or other approved equal method). C. Clean all surfaces of hollow metal doors, panels, frames, anchors, and related items specified hereunder, by hot or cold phosphate treatment standard with the manufacturer. Clean and caustic-etch all aluminum items. Following cleaning, apply one coat of grey rust-inhibitive prime paint to both steel and aluminum work, and bake on. Prime all surfaces, including those which will be inaccessible after erection

7 2.04 INTRUSION ALARM DOOR CONTACTS A. Prepare doors and frames to receive magnetic contacts for intrusion alarm system, furnished under SECTION ELECTRICAL. Contacts shall be installed flush in doors and frames

8 PART 3 EXECUTION 3.01 DOORS AND FRAMES A. Installation will be performed under SECTION FINISH CARPENTRY. END OF SECTION