1. 50 percent adjustable closing force over minimum value for that closer and have adjustable hydraulic back check effective between 60 degrees and 85 degrees of door opening. 2. Hold-open feature, where specified. 3. Size Requirements: Size closers in accordance with manufacturer’s recommendations or provide multi-size closers, sizes 1 through 6. SPEC WRITER NOTES: 1. When only forged or cast iron closers are permitted, the numeral of overhead door closer identification number must be changed from "0" to "7" in HARDWARE SETS. 4. Material of closer must be cast aluminum. 5. or malleable iron arm and brackets. 6. Provide with full size cover. 7. Adjustable hydraulic backcheck and separate valves for closing and latching speed. 2.5 DOOR STOPS A. Conform to ANSI A156.16. B. Provide door stops wherever an opened door or any item of hardware thereon would strike a wall, column, equipment or other parts of building construction. For concrete, masonry or quarry tile construction, use lead expansion shields for mounting door stops. C. Where cylindrical locks with turn pieces or pushbuttons occur, equip wall bumpers Type L02251 (rubber pads having concave face) to receive turn piece or button. D. Substitute floor stops Type L02141 or L02161 as appropriate, when wall bumpers would not provide an effective door stop. E. Where drywall partitions occur, use floor stops, Type L02141 or L02161. F. Provide stop Type L02011 or L02181, as applicable for exterior G. Provide appropriate roller bumper for each set of (except where closet doors occur) where two doors would interfere with each other in swinging. H. Provide appropriate door mounted stop on doors in individual toilets where floor or wall mounted stops cannot be used. 2.6 FLOOR DOOR HOLDERS A. Conform to ANSI Standard A156.16. Provide extension strikes for L01301 and L01311 holders where necessary. SPEC WRITER
1. 50 percent adjustable closing force over minimum value for that closer and have adjustable hydraulic back check effective between 60 degrees and 85 degrees of door opening. 2. Hold-open feature, where specified. 3. Size Requirements: Size closers in accordance with manufacturer’s recommendations or provide multi-size closers, sizes 1 through 6. SPEC WRITER NOTES: 1. When only forged or cast iron closers are permitted, the numeral of overhead door closer identification number must be changed from "0" to "7" in HARDWARE SETS. 4. Material of closer must be cast aluminum. 5. or malleable iron arm and brackets. 6. Provide with full size cover. 7. Adjustable hydraulic backcheck and separate valves for closing and latching speed. 2.5 DOOR STOPS A. Conform to ANSI A156.16. B. Provide door stops wherever an opened door or any item of hardware thereon would strike a wall, column, equipment or other parts of building construction. For concrete, masonry or quarry tile construction, use lead expansion shields for mounting door stops. C. Where cylindrical locks with turn pieces or pushbuttons occur, equip wall bumpers Type L02251 (rubber pads having concave face) to receive turn piece or button. D. Substitute floor stops Type L02141 or L02161 as appropriate, when wall bumpers would not provide an effective door stop. E. Where drywall partitions occur, use floor stops, Type L02141 or L02161. F. Provide stop Type L02011 or L02181, as applicable for exterior G. Provide appropriate roller bumper for each set of (except where closet doors occur) where two doors would interfere with each other in swinging. H. Provide appropriate door mounted stop on doors in individual toilets where floor or wall mounted stops cannot be used. 2.6 FLOOR DOOR HOLDERS A. Conform to ANSI Standard A156.16. Provide extension strikes for L01301 and L01311 holders where necessary. SPEC WRITER