SECTION 11014 WINDOW WASHING SYSTEMS PART 1 - GENERAL 1.1 SUMMARY A. Section includes, but is not limited to, design and furnishing portable davits, davit sleeves, dvit bases, four (4) removable outriggers, inserts for pre-cast concrete panels, removable pins, and all fasteners and anchorages as required or necessary for complete installation. B. Related Sections: 1. Section 03300 - Cast-in-Place Concrete: Setting of anchor bolts and tie-backs. 2. Section 05500 - Metal Fabrications: Setting of davit bases. 3. Division 15 - Plumbing: Water supply and faucets on roof. 4. Division 16 - Electrical: Power supply and outlets on roof. 1.2 SYSTEM REQUIREMENTS A. Design Requirements: Manufacturer is responsible for designing system, including anchorage to structural system and necessary modifications to meet specified requirements and maintain visual design concepts. 1. Employ registered professional engineer, licensed to practice structural engineering in jurisdiction where Project is located, to engineer each component of window washing system. 2. Comply with ANSI A39.1, A120.1, and OSHA 1910.28 and 1910.66. 3. All Vertical Surfaces of Building Exterior: Accessible by means of powered platform or other means included as work of this Section. B. Performance Requirements: Installation: Withstand 50 MPH wind velocities while being used and remain fully operational at wind velocities up to 25 MPH. 1. Suspension Rope Angulation and Tie-In Lanyard System: Design to ensure minimum force of 10 pounds against face of building. C. Structural Requirements: Engineer structural assemblies, davits, sockets and socket bases and components to carry minimum load of 1000 pounds at extreme cable attachment point with minimum safety factor of 4 to 1 against failure. 1. Provide intermittent stabilization anchors capable of resisting 600 pound load perpendicular and parallel to face of building. 1.3 SUBMITTALS A. General: Submit in accordance with Division 1. B. Product Data: Include major equipment items. C. Shop Drawings: Stamp shop drawings with seal and signature of professional engineer responsible for design. 1. Submit plans, sections, elevations and details showing sizes, arrangements, materials, thicknesses, finishes, dimensions and other data to clearly explain character and nature of proposed equipment. 2. Include location diagrams for inserts, davits, outriggers, quick release stabilizer anchors, and other items to be built into structure. 3. Submit sequence drawings to illustrate cleaning of all exterior surfaces of building facade from platform; show intended operations can be accomplished in safe and unencumbered manner in conformance with codes and regulations having jurisdiction. BOKA Powell Project No. 6671-06082 11014-1 08 February 2007
4. Provide large scale roof plans and elevations showing equipment in various positions at various launch points to ensure that clearances and space restrictions have been considered and accommodated. Show special details to allow placement of platforms at each washing position. 5. Verify Project conditions affecting work of this Section and obtain accurate measurements for incorporation into shop drawings. D. Submit changed condition drawings. E. Informational Submittals: Submit following packaged separately from other submittals: 1. Design Data: Submit following information with proposal for review by Architect. a. Indicate weights of major assemblies including davits. 2. Support reactions design data. 3. Test Reports: Field test reports signed by independent testing laboratory, verifying compliance with specified and regulatory requirements. 4. Certifications specified in Quality Assurance article. 5. Qualification Data: Manufacturer's, engineer's, and installer's qualification data. 6. Manufacturer's instructions. F. Closeout Submittals: Submit maintenance data in accordance with Division 1. 1. Include step-by-step operating procedure directions, parts list, equipment check list, schematic wiring diagrams, and procedure to be followed during emergency operations. 2. Provide maintenance checklist broken down on weekly, monthly and yearly basis, describing procedures to be followed, time intervals, and materials to be used. Include names, addresses, and telephone numbers of service firms in vicinity of building available to respond within 24 hours of service call. 1.4 QUALITY ASSURANCE A. Single Source Responsibility: Provide window washing components and systems from same manufacturer or approved by manufacturer. B. Engineer Qualifications: Registered professional engineer licensed to practice structural engineering in jurisdiction where Project is located, with minimum of five years experience in design of window washing systems. C. Manufacturer's Qualifications: Firm solely involved in design, manufacture, and installation of power operated window washing units, that has been actively engaged in this business for not less than 10 years. 1. Submit evidence when requested, indicating that firm has successfully installed at least three platform powered window washing units of similar type as proposed for use on this Project on buildings over 130 feet in height. Include one installation not less than five years old. 2. Submit with proposal, concept drawing which demonstrates manufacturer's proposed solution to building requirements showing aspects that may deviate from Drawings and Specifications. Show coordination with building structure, intermittent stabilization locations, layout, plumbing requirements, electrical requirements, and loads imposed on building structure along with description of proposed system operation. D. Installer Qualifications: Installer employed by manufacturer or approved in writing by manufacturer. E. Welder Qualifications: AWS certified within past 12 months for each type of weld required. F. Regulatory Requirements: 1. Electrical Components and Wiring: Comply with National Electrical Code (NEC) and National Electrical Manufacturer's Association (NEMA) standards. 2. Comply with federal, state and local codes, ordinances, and requirements pertaining to work of this Section. 3. Where requirements of governing codes, regulations, laws and rules conflict with these Specifications and are mandatory, comply with regulatory requirements. BOKA Powell Project No. 6671-06082 11014-2 08 February 2007
G. Certifications: Submit following: 1. Engineering certifications. 1.5 PRE-INSTALLATION CONFERENCE A. Conduct pre-installation conference in accordance with Division 1. 1. Plan necessary coordination with structural, curtain wall, roofing, plumbing, and electrical trades. 1.6 DELIVERY, STORAGE, AND HANDLING A. Comply with Division 1. 1. Shop fabricate window washing equipment in sizes as large as practical. Deliver to Project properly packaged and crated to prevent damage during transit and handling. 2. Store materials under cover in dry, clean location, off ground. Remove materials which are damaged or otherwise not suitable for installation from Project and replace with acceptable materials. 1.7 MAINTENANCE A. Extra Materials: Furnish 10 extra intermittent stabilization inserts in accordance with Division 1. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Acceptable Manufacturers: 1. Equicon, Inc., Mississaqua, Ontario. 2. HighRise Systems, Inc., Ft. Worth, TX. 3. Powered Platforms Mfg., Plymouth, MI. 4. Sky Climber, Inc., Stone Mountain, GA. 5. Spider Staging Corporation, Kent, WA. 6. Swingstage Inc., Scarborough, Ontario. 7. Pro-Bell, Foxborough, MA 2.2 MATERIALS A. Metals: 1. Aluminum Alloy: Alloy 6061-T6, Schedule 80, designed in accordance with ANSI A120.1 2. Steel Pipe: ASTM A53, Type E or S, Grade B. 3. Structural Steel Shapes, Bars and Plates: ASTM A36. 4. Steel Tubing: ASTM A519. 5. Stainless Steel Components: UNS S30400. B. Connectors: Galvanized steel anchor bolts, ASTM A307 or A325. 1. Fasteners Exposed to Weather and Carrying Calculated Stress: Galvanized or stainless steel. C. Non-Shrink Grout: Non-shrink, non-ferrous, equivalent to Masterflow 713 by Master Builders, Cleveland, OH. 2.3 WINDOW WASHING DAVIT AND SUPPORT ASSEMBLIES A. Davit Socket Bases: Permanently attached to structure at locations indicated in accordance with Drawings and manufacturer's recommendations. 1. Socket Bases: Fabricate from pipe of such size and wall thickness suitable for design requirements. Perform welding in compliance with AWS D1.1. 2. Gussets or other protrusions that interfere with flashing or roofing membrane not allowed 3. Socket Bases: Design to accommodate bolts or pins for attachment of portable sockets. 4. Provide minimum of one anchor point for securing a safety line. 5. Hot-dip galvanize steel after fabrication. BOKA Powell Project No. 6671-06082 11014-3 08 February 2007
B. Portable Davit Sockets: Fabricated from seamless mechanical steel pipe or tubing with 4:1 factor of safety. 1. Hinge to permanently attached socket bases by means of stainless steel pins or bolts to permit insertion of davit into socket and subsequent tilting into working position. 2. Make provisions to securely lock davit in upright position. 3. Provide pneumatic tires for portability on roof area. 4. Hot-dipped galvanized steel finishes unless otherwise indicated. C. Davits: Fabricated of Schedule 80, 6061-T6 aluminum alloy pipe and sized to fit into davit socket fixtures. 1. Rotatable type, designed to allow self-powered platform to be brought inboard over parapet to roof for transfer. 2. Close end of each assembly with aluminum cast thrust bearing to ensure easy rotation. Fit upper base section with steel bearing sleeve to protect davit from abrasion when rotating in davit socket. 3. Equip each davit with positive friction brake to prevent rotation of davit from desired work position. 4. Hanger Bar: Equip each davit with multiple pick-up hanger bar to provide for variable suspension radius and to allow use of Type F (four wire) and Type T (two wire) work platforms. a. Construct hanger bar to permit suspension radius of at least 1500 mm (5 feet) and minimum of approximately 1170 mm (46 inches). b. Provide at least three suspension points between maximum and minimum radii. D. Safety Tie-Backs: Position directly behind each davit base and at right angles to building face or integral with permanently supported socket base. 1. Where right angle spacing cannot be achieved, furnish two safety tie-backs for each davit location. 2. Determine design for safety tie-back on davit reactions. However, do not consider safety tie-back in davit design. 3. Hot dip galvanize safety tie-backs after fabrication. 2.4 ROPE STABILIZERS A. Wire Rope Stabilizers: No rope in excess of 300 feet long hangs between stabilizers or between davit attachment point and stabilizer. B. Stabilize power cord to building or support ropes at 100 foot intervals maximum. 2.5 PORTABLE OUTRIGGERS A. Size, PART 3 - EXECUTION 3.1 EXAMINATION A. Examine conditions and proceed with Work in accordance with Division 1. 3.2 INSTALLATION A. Window Washing Davits and Supports: Install in accordance with accepted shop and erection drawings and Division 1. 1. Coordinate with construction operations. B. Davit Socket Base Plates: Install plumb and level with non-shrink grout placed in accordance with manufacturer's instructions. 3.3 FIELD QUALITY CONTROL A. Tests and Inspections: BOKA Powell Project No. 6671-06082 11014-4 08 February 2007
1. Inspections and tests of installation of anchors and bases permanently attached to structure will be performed by independent laboratory selected and paid by Owner. 2. Perform inspections and tests in accordance with ASTM E329. 3. Inspect field bolted connections in accordance with AISC requirements. 4. For welding connections: a. Verify welders are qualified in accordance with American Welding Society requirements. b. Perform visual inspection of welds. c. Perform ultrasonic inspection of full penetration welds. d. Record types and locations of defects and work performed to correct defects. 5. Obtain local and state inspections and permits. Make tests as required for regulations of authorities having jurisdiction. 6. Conduct tests as required by regulation of state and local authorities having jurisdiction. B. Permits: After installation is complete, obtain city, state and other authority documents, permits, and licenses necessary to operate window washing system. Owner's approval, acceptance, and payment will not be forthcoming until necessary permits and documentation have been approved and issued. 3.4 DEMONSTRATION A. Demonstration and Instruction of Owner s Personnel: Provide in accordance with Division 1. 1. Manufacturer's Factory Trained Representative: After completion of installation, conduct full load and operation tests in accord with applicable standards under maximum design loading conditions and operate over full range (horizontally and vertically) of building surfaces to be maintained. 2. Manufacturer's Factory Trained Representative: Instruct Owner's designated personnel in complete operation and maintenance of installed system. 3. When necessary, make minor adjustments. Carefully document and submit adjustments to Owner. END OF SECTION 11014 BOKA Powell Project No. 6671-06082 11014-5 08 February 2007