C. The conduit system shall be made mechanically tight and electrical continuous throughout. Conduit system to be grounded at the service entrance.

Size: px
Start display at page:

Download "C. The conduit system shall be made mechanically tight and electrical continuous throughout. Conduit system to be grounded at the service entrance."

Transcription

1 RACEWAYS AND BOXES FOR CONDUIT AND FITTINGS PART 1 - DESCRIPTION 1.01 GENERAL A. All electrical/electronic conductors shall be enclosed in a continuous grounded raceway system except as otherwise noted. B. Raceway and enclosure sizes as noted on the Drawings or, in the absence of notation, sized to comply with N.E.C. fill requirements for the conductors enclosed. Include space for code size grounding conductors. C. The conduit system shall be made mechanically tight and electrical continuous throughout. Conduit system to be grounded at the service entrance. D. Acceptable manufacturers shall be Allied, Wheatland, LTV and Triangle QUALITY ASSURANCE A. NFPA 70 National Electrical Code B. Underwriter s Laboratory C. Rigid Metal Conduit (RMC) ANSI C80.1. D. Intermediate Metal Conduit (IMC) ANSI C E. Electrical Metallic Tubing (EMT) ANSI C80.3. F. Liquidtight Flexible Metal Conduit (LFMC) UL 360. G. Underground Non-Metallic Conduit (RNC) NEMA TC2, Type EPC-40-PVC PART 2 - PRODUCTS GALVANIZED RIGID HEAVYWALL CONDUIT (GRMC) A. Galvanized rigid heavywall conduit shall have a UL label. B. Minimum trade size for all home runs shall be 3/4". C. Minimum size elsewhere shall be 1/2". D. Galvanized rigid heavywall conduit shall be used in the following locations: 1. Exposed applications below 9 -"0" indoor. 2. Below grade THIN WALL TYPE EMT CONDUIT (ELECTRICAL METALLIC TUBING) A. EMT shall have a UL label. B. Minimum trade size for all home runs shall be 3/4". C. Minimum size elsewhere shall be 1/2". RACEWAYS AND BOXES FOR

2 D. EMT conduit shall be used only in the following locations. 1. In interior stud partitions. 2. Above suspended ceilings. 3. Exposed above 9'-0" in interior spaces only. 4. Exposed below 9'-0" in mechanical or electrical equipment rooms or electrical closets. E. EMT conduit shall not be used in the following locations: 1. Exposed applications below 9'-0" unless specifically noted. 2. Below grade. 3. Exposed outdoors. 4. In slabs above and below grade. 5. In masonry and concrete walls INTERMEDIATE GALVANIZED METALLIC CONDUIT (IMC) A. IMC shall have a UL label. B. Minimum trade size for all home runs shall be 3/4". C. Minimum trade size elsewhere shall be 1/2". D. IMC shall be used at the contractor's option in lieu of GRMC for interior applications only, as listed above for GRMC POLYVINYL CHLORIDE CONDUIT (PVC) A. PVC conduit shall be UL listed schedule 40 and UL listed Schedule 80. B. Minimum trade size for all home runs shall be 3/4". C. Minimum size elsewhere shall be 1/2". D. PVC conduit shall be used at the contractor's option in lieu of GRMC in the following applications only: 1. Below grade. 2. Below slab on grade. 3. In slab above grade for branch circuits only. 4. In interior masonry walls ( exterior walls to be GRMC) ALUMINUM CONDUIT A. Aluminum conduit shall have UL label. B. Minimum trade size for all home runs shall be 3/4 C. Minimum size elsewhere shall be 1/2 D. Aluminum conduit shall be used in the following locations: 1. Exposed applications outdoors RACEWAYS AND BOXES FOR

3 E. Aluminum conduit shall not be used in the following locations: 1. All applications not listed in paragraph 4a above FLEXIBLE METAL CONDUIT. A. Flexible metal conduit shall have a UL label. B. Minimum size shall be 1/2". C. All flexible metal conduit shall contain a ground wire sized by NEC. D. Flexible metal conduit shall be used only in the following interior applications: 1. Connections to motors. 2. Connections to vibrating equipment. E. Flexible metal conduit shall not be used in exterior applications. F. Flexible conduit shall be terminated in insulated flexible conduit fittings in compliance with Article 350 of the National Electrical Code LIQUIDTIGHT FLEXIBLE CONDUIT. A. Liquidtight flexible conduit shall have a UL label. B. Minimum size shall be 1/2". C. All liquidtight flexible conduit shall contain a ground wire sized per NEC. D. Liquidtight flexible conduit shall be used in the following applications: 1. Connections to motors. 2. Connections to vibrating equipment. E. Flexible conduit runs shall be terminated in insulated flexible conduit fittings in compliance with Article 350 of the National Electrical Code FITTINGS A. GRMC couplings shall be threaded steel type. Connections to boxes, etc., shall be made with two lock nuts, one on either side of box or enclosure. B. All EMT fittings shall be galvanized malleable iron or steel. Connectors and couplings to be set screw or compression type. C. Conduit bodies to be malleable iron, threaded for heavywall conduit and compression type for EMT, with cadmium finish and cadmium plated sheet steel covers. Provide neoprene cover gaskets for conduit body covers exposed to the weather. D. All fittings used with aluminum conduit shall be aluminum. RACEWAYS AND BOXES FOR

4 2.09. MATERIALS NOT PERMITTED A. The following materials shall not be used on this project: 1. Type MC (Metal-Clad Cable) 2. Flexible non metallic (PVC) conduit. 3. All materials not specifically mentioned in this specification. PART 3 - EXECUTION 3.01 INSTALLATION A. All conduits in finished spaces shall be run concealed in walls, ceiling spaces, or below floor. Exposed conduits will be permitted only in electrical and mechanical rooms or at the discretion of the Architect. All conduits shall be run parallel and perpendicular to walls and floor. Conduit to be adequately supported from elements of the building using conduit clamps and shall not rest on, nor be supported from suspended ceilings. Boxes to be fastened to structure independently from conduit system. B. Exposed conduits rising from below the slab to surface panels or boxes shall have a 3 inch high concrete curb, with chamfered edges, encasing the conduits at the floor. Only GRMC conduits are permitted for this application. C. All conduits shall be continuous from outlet to outlet, and installed complete before pulling conductors. Swab conduits free of dirt, grease and moisture before pulling conductors. D. Install bushings on all conduit ends. Bushings smaller than 1-1/2 inches are to be all metal with formed radius to prevent insulation damage. Bushings 1-1/2 inches and larger to be insulating type constructed of metal insert for threads and bakelite plastic, molded to the metal insert as manufactured by O.Z./Gedney, Thomas and Betts or Appleton. E. Provide #12 AWG pull wires or nylon pull lines in all empty conduits. F. Maintain minimum clearances of 6 inches from parallel hot water piping and 4 inches from crossovers. G. Aluminum conduits installed on exterior walls shall be installed on stand-off brackets. H. PVC conduit run below grade or in slabs shall not penetrate exposed areas. Transition to GRMC conduit below grade or in slab and penetrate exposed areas only in GRMC conduit.. I. No PVC 90 degree Ell's or bends are permitted. Use only GRMC 90 degree Ell's for all PVC conduit installations. J. From all telephone, data and video junction boxes, run 1 conduit to accessible ceiling space and turn towards corridor. Provide bushings. K. All PVC conduit run under drives and parking areas shall be encased in 3 concrete. L. All conduits installed in hazardous areas as defined in Article 500 through 516 of the National Electrical Code shall meet all the requirements of the applicable code sections. RACEWAYS AND BOXES FOR

5 OUTLET BOXES PART 1 DESCRIPTION 1.01 GENERAL A. Outlets to be provided for devices, lighting fixtures, motors, and equipment connections, systems equipment connections, special outlets, and as otherwise required. B. Equipment furnished shall be standard products manufactured by Adalet-PLM Div., Scott and Fetzer Co., Appleton Electric Co., RACO, Inc., Steel City/Midland-Ross Corp., Arrow- Hart Div., Crouse-Hinds Co., O-Z/Gedney Co., or Pyle-National Co QUALITY ASSURANCE A. NFPA 70 National Electrical Code B. Underwriter s Laboratory C. NEMA OS 2 and UL 514A.Rigid Metal Conduit (RMC) ANSI C80.1. PART 2 - PRODUCTS 2.01 PRODUCTS A. Interior Outlet Boxes: Provide galvanized flat rolled sheet steel interior outlet wiring boxes, of types, shapes and sizes, including box depths, to suit each respective location and installation; construct with stamped knockouts in back and sides, and with threaded screw holes with corrosion-resistant screws for securing box covers and wiring devices. B Interior Outlet Box Accessories: Provide outlet box accessories as required for each installation, including mounting brackets, wallboard hangers, extension rings, fixture studs, cable clamps and metal straps for supporting outlet boxes, which are compatible with outlet boxes being used and fulfilling requirements of individual wiring situations. Choice of accessories Installer's option. C. Lighting outlet boxes to be standard 4-inch octagonal, 2 inches minimum deep boxes. Outlet boxes having more than two conduits, or when 3/4 inch conduit is used, to be standard 4-inch square boxes 1-2 inches deep or deeper as might be required to accommodate the wiring contained therein. D. Wiring device boxes for surface conduit work and located in potentially damp areas to be FS series cast boxes. E. Flush device boxes in plaster or dry construction to be 4 in. sq., 2-1/8 inch deep boxes with plaster covers or gangable 2-1/2 inch deep boxes. Shallow 1-1/2 inch deep gangable boxes may be used only in demountable partitions and in other walls too thin for standard depth boxes. F. Floor boxes shall be water tight with covers suitable for intended use. G. Exposed boxes shall be cast type FS. H. Outlet boxes for data / video and voice shall be 2 gang with minimum depth of 3-1/2 RACEWAYS AND BOXES FOR

6 PART 3 - EXECUTION 3.01 INSTALLATION A. All outlet boxes upon which lighting fixtures are to be installed, to be equipped with 3/8 inch fixture studs. B. All boxes to be rigidly supported from building structure independent of the conduit system. Boxes cast into masonry or concrete are considered to be rigidly supported. C. Flush boxes to finish within 1/4 inch of surface of non-combustible materials. Boxes shall not project beyond finished surfaces. D. Flush fixtures in lay-in ceilings to have branch circuit conduit terminated in a junction box above ceiling, but accessible through ceiling opening and located at least one foot away from the fixture. Use 3/8 inch flexible steel conduit connection between junction box and fixture housing. E. Location of all outlets are approximate. Final location shall be verified with the Architect in the field prior to installation. F. All outlet boxes containing receptacles, switches and other devices shall be flush mounted unless specifically noted otherwise. G. All casework outlets shall be flush mounted unless specifically noted on drawings. RACEWAYS AND BOXES FOR

7 PULL AND JUNCTION BOXES PART 1 - GENERAL 1.01 DESCRIPTION A. Pull boxes, junction boxes or handhole enclosures to be provided in all raceway systems where required to avoid an excessive number of bends, to facilitate wire pulling, or to afford required access to the raceway system. Maximum distance between boxes in raceway systems shall not exceed 100 feet unless noted otherwise. B. Equipment furnished shall be standard products manufactured by Appleton Electric Co., Arrow-Hart Division, Crouse-Hinds Co., Keystone Columbia, Inc.,O-Z/Gedney Co., or Spring City Electrical Mfg. Co QUALITY ASSURANCE A. NFPA 70 National Electrical Code B Underwriter s Laboratory C. ANSI C2 PART 2 - PRODUCTS 2.01 PULL AND JUNCTION A. Pull and Junction Boxes: Provide galvanized code-gauge sheet steel junction and pull boxes, with screw-on covers, of types, shapes and sizes, to suit each respective location and installation. B. Concealed pull or junction boxes to be flush in finished walls, located near the floor and provided with flush type covers; blank device plates in case of outlet typeboxes and flat plates prime painted and secured with flat head screws in the case of larger boxes. Surface junction boxes in utility areas to be without knockouts, to have close fitting screw covers and to be finished in medium grey enamel. C. Boxes exposed to the weather to be weatherproof type as required by NEC. D. Bushings, Knockout Closures and Locknuts: Provide corrosion-resistant punched-steel box knock-out closures, conduit locknuts and malleable iron conduit bushings, offset connectors, of types and sizes to suit respective uses and installation HANDHOLE ENCLOSURE A. Provide reinforced concrete handhole complying with ASTM C 858 with types, shapes and sizes to suit each respective location and installation. B. Provide with cast-iron weatherproof frame and securely fastened cast-iron cover with "Electric" or "Communication" label. RACEWAYS AND BOXES FOR

8 C. Provide with suitable bushings, shields, or fittings having smooth rounded edges where cables pass through partition and at other locations where necessary. D. Where handholes enclosures are used on systems 600V and less provide handhole enclosures without bottom. Where handhole enclosures are used on systems over 600V provide a completely enclosed enclosure for the contained conductors and cables with one or more sides removable. E. Where handholes are used on systems over 600V provide permanantly marked "Danger- High Voltage - Keep Out" label on cover. The marking shall be on the outside of the box cover readily visible, with block type letters minimum 1/2" in height. PART 3 - EXECUTION 3.01 INSTALLATION A. General: Install electrical boxes, complying with manufacturer's written instructions, applicable requirements of NEC and NECA's "Standard of Installation", UL 50, and in compliance with recognized industry practices. B. Furnish and install handhole enclosures as described on the drawings and in the specification for all underground raceway installations unless noted otherwise. Handholes to be installed flush with finished grade. C. Coordinate installation of electrical boxes and fittings with wire/cable and raceway installation work. D. Pull and junction boxes to be located in utility areas or above accessible ceiling systems wherever possible. Boxes located in other areas shall be brought to the attention of the Architect prior to installation. E. Pull and junction boxes to be sizes in accordance with the NEC for both contained conductors and conduit entrances and exits. Terminations at boxes shall be secured by locknuts or bushings. F. Fasten boxes rigidly to structural surfaces, or solidly imbed electrical boxes in concrete or masonry. G. Boxes not otherwise accessible in ceilings and walls shall be made accessible by an 18 inch x 18 inch or larger hinged door access panel. H. Provide water tight boxes, slip expansions or bonding jumpers where dictated by construction conditions. RACEWAYS AND BOXES FOR

9 SLEEVES AND SEALS PART 1 - GENERAL 1.01 DESCRIPTION A. Furnish and install sleeves for conduit penetrations through masonry and concrete construction. B. Sleeve where conduit passes through walls exposed and through smoke or fire rated separations, or equipment room walls or floor. C. Sleeving with absolutely watertight seal is required for conduit passing through floor slabs on grade. D. Carefully coordinate and check locations of sleeves immediately before and after masonry installation QUALITY ASSURANCE A. NFPA 70 National Electrical Code B. Underwriter s Laboratory C. NFPA 101 Life Safety Code PART 2 - PRODUCTS 2.01 SLEEVE MATERIAL A. Sleeve material through floors and walls shall be machine cut rigid metallic conduit WATERTIGHT SEALS A. Watertight seals below grade to prevent moisture penetration shall be compression seals such as "Linkseal" by Thunderline Corp., Hilti and Oz/ Gedney FIRE BARRIER SEALANTS A. Fire barrier sealants shall be 3M Fire Barrier, T&B Flame Safe, or Down Corning Silicone RTV Foam or other UL approved fire barrier materials CORROSIVE SERVICE SEALS A. Corrosive seals are to be glass reinforced nylon plastic for good resistance to organic compounds. Acids and related chemicals such as Linkseal Model S. RACEWAYS AND BOXES FOR

10 2.05 FIRE RATED SEALS A. Fire rated seals to be used to provide protection against flames, smoke, gases, and water when exposed to extreme high temperatures. Seals such as Pyro-Pac BS manufactured by Linkseal. PART 3 - EXECUTION 3.01 CUTTING A. Cut sleeves through walls flush with each surface. Extend sleeves beyond wall surface to allow for capping of unused sleeves. B. Cut sleeves 1/8 inch above finished floors and 3 inches above floors in equipment rooms and shafts. Bottom of sleeve to be cut flush INSTALLATION A. Pack the space between sleeves and conduits or cables with approved fire barrier sealant to maintain fire rating of structure. Fill space around all sleeves leading into exposed areas with material compatible with adjacent construction and finish or fire barrier sealant material to maintain fire rating of the structure. B. Unused sleeves shall be filled with and surrounded by fire barrier materials and cap the ends FIRE RATING A. Watertight seals that penetrate fire rated floors or walls shall also be UL listed and installed to maintain the fire rating of the wall or floor. RACEWAYS AND BOXES FOR

11 THROUGH-PENETRATION FIRESTOPPING PART 1 - GENERAL 1.01 RELATED DOCUMENTS A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division-1 Specification Section, apply to work specified in this section DEFINITIONS A. Firestopping: Material or combination of materials used to retain integrity of fire-rated construction by maintaining an effective barrier against the spread of flame, smoke, and hot gases through penetrations in fire rated wall and floor assemblies GENERAL DESCRIPTION OF THE WORK OF THIS SECTION A. Only tested firestop systems shall be used in specific locations as follows: Penetrations for the passage of cables, conduit, and other electrical equipment through fire-rated vertical barriers (walls and partitions), horizontal barriers (floor/ceiling assemblies), and vertical service shaft walls and partitions REFERENCES A. Test Requirements: ASTM E 814, "Standard Method of Fire Tests of Through Penetration Fire Stops" B. Test Requirements: UL 1479, Fire Tests of Through-Penetration Firestops C. Underwriters Laboratories (UL) of Northbrook, IL publishes tested systems in their "FIRE RESISTANCE DIRECTORY" that is updated annually. 1. UL Fire Resistance Directory: a. Firestop Devices (XHJI) b. Fire Resistance Ratings (BXRH) c. Through-Penetration Firestop Systems (XHEZ) d. Fill, Voids, or Cavity Material (XHHW) e. Forming Materials (XHKU) D. International Firestop Council Guidelines for Evaluating Firestop Systems Engineering Judgments E. Inspection Requirements: ASTM E 2174, Standard Practice for On-site Inspection of Installed Fire Stops. F. ASTM E 84, Standard Test Method for Surface Burning Characteristics of Building Materials. G. All major building codes including but not limited to: OBC, BOCA and IBC. H. NFPA Life Safety Code I. NFPA 70 - National Electric Code RACEWAYS AND BOXES FOR

12 1.05 QUALITY ASSURANCE A. Firestop System installation must meet requirements of ASTM E 814 or UL 1479 tested assemblies that provide a fire rating equal to that of construction being penetrated. B. Proposed firestop materials and methods shall conform to applicable governing codes having local jurisdiction. C. Firestop Systems do not reestablish the structural integrity of load bearing partitions/assemblies, or support live loads and traffic. Installer shall consult the structural engineer prior to penetrating any load bearing assembly. D. For those firestop applications that exist for which no UL tested system is available through a manufacturer, a manufacturer's engineering judgment derived from similar UL system designs or other tests will be submitted to local authorities having jurisdiction for their review and approval prior to installation. Engineering judgment drawings must follow requirements set forth by the International Firestop Council SUBMITTALS A. Submit Product Data: Manufacturer s specifications and technical data for each material including the composition and limitations, documentation of UL firestop systems to be used and manufacturer's installation instructions. B. Manufacturer's engineering judgment identification number and drawing details when no UL system is available for an application. Engineering judgment must include both project name and contractor s name who will install firestop system as described in drawing. C. Submit material safety data sheets provided with product delivered to job-site PROJECT CONDITIONS A. Do not use materials that contain flammable solvents. B. Scheduling 1. Schedule installation of CAST IN PLACE firestop devices after completion of floor formwork, metal form deck, or composite deck but before placement of concrete. 2. Schedule installation of other firestopping materials after completion of penetrating item installation but prior to covering or concealing of openings. C. Verify existing conditions and substrates before starting work. Correct unsatisfactory conditions before proceeding. D. Weather conditions: Do not proceed with installation of firestop materials when temperatures exceed the manufacturer's recommended limitations for installation printed on product label and product data sheet. E. During installation, provide masking and drop cloths to prevent firestopping materials from contaminating any adjacent surfaces. RACEWAYS AND BOXES FOR

13 PART 2 - PRODUCTS 2.01 FIRESTOPPING, GENERAL A. Provide firestopping composed of components that are compatible with each other, the substrates forming openings, and the items, if any, penetrating the firestopping under conditions of service and application, as demonstrated by the firestopping manufacturer based on testing and field experience. B. Provide components for each firestopping system that are needed to install fill material. Use only components specified by the firestopping manufacturer and approved by the qualified testing agency for the designated fire-resistance-rated systems ACCEPTABLE MANUFACTURERS A. Acceptable Manufacturers shall be Hilti, 3M or STI MATERIALS A. Use only firestop products that have been UL 1479 or ASTM E 814 tested for specific firerated construction conditions conforming to construction assembly type, penetrating item type, annular space requirements, and fire-rating involved for each separate instance. B. Cast-in place firestop devices are installed prior to concrete placement for use with noncombustible and combustible plastic pipe (closed and open systems), conduit, or electrical cable bundles penetrating concrete floors, the following products or approved equals are acceptable: 1. Hilti CP 680 Cast-In Place Firestop Device 2. Hilti CP 682 Cast-In Place Firestop Device for use with noncombustible penetrants C. Sealants, foams or caulking materials for use with non-combustible items including rigid steel conduit and electrical metallic tubing (EMT), the following products or approved equals are acceptable: 1. Hilti FS-ONE Intumescent Firestop Sealant 2. Hilti CP 620 Fire Foam 3. Hilti CP 606 Flexible Firestop Sealant 4. Hilti CP 601s Elastomeric Firestop Sealant D. Intumescent sealants, caulking materials for use with combustible items (penetrants consumed by high heat and flame) including PVC jacketed, flexible cable or cable bundles, and plastic pipe, the following products or approved equal are acceptable: 1. Hilti FS-ONE Intumescent Firestop Sealant E. Foams, intumescent sealants, or caulking materials for use with flexible cable or cable bundles, the following products or approved equals are acceptable: 1. Hilti FS-ONE Intumescent Firestop Sealant 2. Hilti CP 620 Fire Foam 3. Hilti CP 606 Flexible Firestop Sealant 4. Hilti CP 601s Elastomeric Firestop Sealant RACEWAYS AND BOXES FOR

14 F. Non curing, re-penetrable intumescent putty or foam materials for use with flexible cable or cable bundles, the following products or approved equals are acceptable: 1. Hilti CP 618 Firestop Putty Stick 2. Hilti CP 658T Firestop Plug G. Wall opening protective materials for use with U.L. listed metallic and specified nonmetallic outlet boxes, the following products or approved equals are acceptable: 1. Hilti CP 617 Firestop Putty Pad H. Materials used for large openings and complex penetrations made to accommodate cable trays and bundles, multiple steel and copper pipes, electrical busways in raceways, the following products or approved equals are acceptable: 1. Hilti CP 637 Firestop Mortar 2. Hilti FS 657 FIRE BLOCK 3. Hilti CP 620 Fire Foam 4. Hilti CP 675T Firestop Board I. Non curing, re-penetrable materials used for large openings and complex penetrations made to accommodate cable trays and bundles, multiple steel and copper pipes, electrical busways in raceways, the following products or approved equals are acceptable: 1. Hilti FS 657 FIRE BLOCK 2. Hilti CP 675T Firestop Board J. Provide a firestop system with a "F" Rating as determined by UL 1479 or ASTM E 814 which is equal to the time rating of construction being penetrated. PART 3 - EXECUTION 3.01 PREPARATION A. Verification of Conditions: Examine areas and conditions under which work is to be performed and identify conditions detrimental to proper or timely completion. 1. Verify penetrations are properly sized and in suitable condition for application of materials. 2. Surfaces to which firestop materials will be applied shall be free of dirt, grease, oil, rust, laitance, release agents, water repellents, and any other substances that may affect proper adhesion. 3. Provide masking and temporary covering to prevent soiling of adjacent surfaces by firestopping materials. 4. Comply with manufacturer's recommendations for temperature and humidity conditions before, during and after installation of firestopping. 5. Do not proceed until unsatisfactory conditions have been corrected. RACEWAYS AND BOXES FOR

15 3.02 COORDINATION A. Coordinate location and proper selection of cast-in-place Firestop Devices with trade responsible for the work. Ensure device is installed before placement of concrete INSTALLATION A. Regulatory Requirements: Install firestop materials in accordance with UL Fire Resistance Directory. B. Manufacturer's Instructions: Comply with manufacturer's instructions for installation of through-penetration materials. 1. Seal all holes or voids made by penetrations to ensure an air and water resistant seal as directed by UL listed firestop system. 2. Protect materials from damage on surfaces subjected to traffic FIELD QUALITY CONTROL A. Examine sealed penetration areas to ensure proper installation before concealing or enclosing areas. B. Keep areas of work accessible until inspection by local authorities having jurisdiction.. C. Inspection of through-penetration firestopping shall be performed in accordance with ASTM E 2174, Standard Practice for On-Site Inspection of Installed Fire Stops or other recognized standard. D. Perform under this section patching and repairing of firestopping caused by cutting or penetrating of existing firestop systems already installed by other trades ADJUSTING AND CLEANING A. Remove equipment, materials and debris, leaving area in undamaged, clean condition. B. Clean all surfaces adjacent to sealed holes and joints to be free of excess firestop materials and soiling as work progresses. END OF SECTION RACEWAYS AND BOXES FOR