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| | SECTION 05511 |
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| | FIXED METAL LADDERS |
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| | Copyright 2003 - 2003 ARCAT, Inc. - All rights reserved
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| | ** NOTE TO SPECIFIER ** Alaco Ladder Company; fixed and folding aluminum wall ladders and ship's ladders.
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This section is based on the products of Alaco Ladder Company, which is located at:
5167 G Street
Chino, CA 91710-5143
Tel: 888-310-7040
Fax: 909-591-7565
Email: sales@alacoladder.com
[ Additional Product Data and Info ]
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Alaco is a manufacturer of special purpose and custom designed ladders to fit a variety of residential, commercial, and industrial uses. Established over 100 years ago, Alaco engineers and manufactures a wide array of ladders for numerous applications. Ladders are Alaco's only business, and they are the experts in the field.
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| | PART 1 | GENERAL |
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| | 1.1 | SECTION INCLUDES |
| | ** NOTE TO SPECIFIER ** Delete items below not required for project. |
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| | | A. | Fixed aluminum wall ladders. |
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| | | B. | Fixed aluminum ship's ladders. |
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| | | C. | Folding aluminum wall ladders. |
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| | | D. | Retractable aluminum wall ladders. |
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| | | E. | Fasteners and installation accessories. |
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| | 1.2 | RELATED SECTIONS |
| | ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required. |
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| | | A. | Section 05500 - Metal Fabrications: Catwalks and fire escapes. |
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| | | B. | Section 06100 - Rough Carpentry: Blocking in metal wall studs and partitions for anchorage of access ladders |
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| | | C. | Section 06435 - Rolling Library Ladders. |
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| | 1.3 | REFERENCES |
| | ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section. |
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| | | A. | ANSI A14.3 - American National Standard for Ladders -- Fixed -- Safety Requirements; 1992. |
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| | | B. | ASTM B 209 - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate; 2001. |
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| | | C. | ASTM B 209M - Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric); 2001. |
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| | | D. | ASTM B 210 - Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes; 2002. |
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| | | E. | ASTM B 221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes; 2000. |
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| | | F. | ASTM B 221M - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric); 2000. |
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| | | G. | ASTM B 308 - Standard Specification for Aluminum - Alloy T6061-T6 Standard Structural; 2002 |
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| | | H. | ASTM B 308M - Standard Specification for Aluminum - Alloy T6061-T6 Standard Structural; 2002 |
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| | | I. | OSHA 29 CFR Standard 1910.27 - Fixed ladders; Occupational Safety and Health Standards; current edition |
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| | 1.4 | SUBMITTALS |
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| | | A. | Submit under provisions of Section 01300. |
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| | | B. | Product Data: Manufacturer's data sheets on each product to be used, including: |
| | | | 1. | Preparation instructions and recommendations. |
| | | | 2. | Storage and handling requirements and recommendations. |
| | | | 3. | Installation methods. |
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| | | C. | Shop Drawings: Detailed drawings showing complete dimensions, all materials, mounting attachments, and fabrication details. |
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| | 1.5 | QUALITY ASSURANCE |
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| | | A. | Manufacturer Qualifications: Company specializing in the engineering and manufacturing of metal ladders, with not less than fifty years of experience. |
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| | 1.6 | WARRANTY |
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| | | A. | See Section 01780 - Closeout Submittals, for additional warranty requirements. |
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| | | B. | Provide manufacturer's standard limited five-year warranty against defects in materials and workmanship. |
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| | PART 2 | PRODUCTS |
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| | 2.1 | MANUFACTURERS |
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| | | A. | Acceptable Manufacturer: ALACO Ladder Co., which is located at: 5167 G St. ; Chino, CA 91710-5143; Toll Free Tel: 888-310-7040; Tel: 909-591-7561; Email: request info; Web: www.alacoladder.com |
| | ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions. |
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| | | B. | Substitutions: Not permitted. |
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| | | C. | Requests for substitutions will be considered in accordance with provisions of Section 01600. |
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| | 2.2 | MATERIALS |
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| | | A. | Extruded Aluminum Profiles: ASTM B 221/B 221M, ASTM B 210, ASTM B 308/B 308M, Alloy 6061-T6; standard mill finish. |
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| | | B. | Aluminum Sheet and Plate: ASTM B 209/B 209M, Alloy 6061-T6; standard mill finish. |
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| | | C. | Fasteners: Aluminum solid aircraft rivets rated at 300 lbs (1335 N) shear strength. |
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| | | D. | Cast fittings, connectors and rung ends: Cast Aluminum alloy 356 |
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| | 2.3 | LADDERS |
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| | | A. | Ladders - General: Comply with ANSI A14.3 and OSHA regulations. |
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| | | B. | Fixed Wall Ladders: Extruded aluminum; serrated rungs 1-1/8 inches (29 mm) in diameter, connected to 2-7/8 inch (73 mm) side rail channels with cast aluminum rung connectors, each secured to rails by means of four solid aircraft rivets. |
| | ** NOTE TO SPECIFIER ** Delete the following paragraph if not required. |
| | | | 1. | Walk-Through and Parapet Railings: Aluminum extrusions; extend not less than 42 inches (1,067 mm) above landing, 24 in (610 mm) between side rails at step through. |
| | ** NOTE TO SPECIFIER ** The following paragraph is for ladders over 20 feet in height. Delete if not required. |
| | | | 2. | Cage: Aluminum hoops 1/4 by 2 inches (6 by 51 mm) and seven aluminum vertical bars 3/16 by 1-1/2 inches (5 by 38 mm) riveted rigidly together. |
| | ** NOTE TO SPECIFIER ** The following paragraph is for ladders over 30 feet in height; platforms are required at 30 ft intervals. Delete if not required. |
| | | | 3. | Rest Platforms: Aluminum Grip Strut grating and aluminum toe boards 0.63 in (1.6 mm) thick by 4 inches (102 mm) wide; railings of 1-1/4 inch (32 mm) round serrated tube with cast aluminum railing fittings. |
| | ** NOTE TO SPECIFIER ** The following paragraph is for roof access ladders in locations that are accessible by the public. Delete if not required. |
| | | | 4. | Security Doors: Form from aluminum sheet 0.188 inch (4.8 mm) in thickness; secure with stainless steel piano hinges and hasps. |
| | ** NOTE TO SPECIFIER ** The following paragraph is for roof hatch access ladders. Delete if not required. |
| | | | 5. | Hatch Access: Provide ladder side rail with rubber end caps and end with sufficient clearance for hatch to properly close. |
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| | | C. | Ship's Ladders: 24 inches (610 mm) wide. |
| | ** NOTE TO SPECIFIER ** Delete one of the following two capacity paragraphs. |
| | | | 1. | Capacity: 500 lbs (225 kg). |
| | ** NOTE TO SPECIFIER ** Delete two of the following three paragraphs. |
| | | | | a. | Slope: 60 degrees; 6-inch (152 mm) wide aluminum steps mounted on 10-13/32 inches (264 mm) centers to 5-1/4 inch (133 mm) aluminum side rails. |
| | | | | b. | Slope: 70 degrees; |
| | ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. |
| | | | | | 1) | For Ladders Less Than 10 Feet: 3-inch (76 mm) wide aluminum steps mounted on 12 inch (305 mm) centers to 2-7/8 inch (73 mm) aluminum side rails. |
| | | | | | 2) | For Ladders 10 Feet and Greater: 4-inch (102 mm) wide aluminum steps mounted on 12 inch (305 mm) centers to 4-1/8 inch (105 mm) aluminum side rails. |
| | | | | c. | Slope: 80 degrees; 3-inch (76 mm) wide aluminum steps mounted on 12 inch (305 mm) centers to 2-7/8 inch (73 mm) aluminum side rails. |
| | | | 2. | Capacity: 1000 lbs (450 kg). |
| | ** NOTE TO SPECIFIER ** Delete three of the following four paragraphs. |
| | | | | a. | Slope: 60 degrees; 6-inch (152 mm) wide aluminum steps mounted on 12 inch (264 mm) centers to 5-5/8 inch (133 mm) aluminum side rails. |
| | | | | b. | Slope: 65 degrees; 6-inch (152 mm) wide aluminum steps mounted on 12 inch (264 mm) centers to 5-5/8 inch (133 mm) aluminum side rails. |
| | | | | c. | Slope: 70 degrees; 6-inch (152 mm) wide aluminum steps mounted on 12 inch (264 mm) centers to 5-5/8 inch (133 mm) aluminum side rails. |
| | | | | d. | Slope: 75 degrees; 6-inch (152 mm) wide aluminum steps mounted on 12 inch (264 mm) centers to 5-5/8 inch (133 mm) aluminum side rails. |
| | | | 3. | Fasten each step with not less than eight aluminum aircraft rivets. |
| | | | 4. | Provide handrails of 1-1/4 in (32 mm) round serrated aluminum tubing with cast or extruded aluminum fittings. |
| | | | 5. | Furnish ladder with four mounting brackets. |
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| | | D. | Folding Wall Ladders: 24 inches (610 mm) wide. |
| | ** NOTE TO SPECIFIER ** Delete three of the following four paragraphs. |
| | | | 1. | Slope: 60 degrees; 6-inch (152 mm) wide aluminum nonslip steps mounted on 10-13/32 inches (264 mm) centers to 5-1/4 inch (133 mm) aluminum side rails. |
| | | | 2. | Slope for Ladders Less than 10 Feet: 70 degrees; 3-inch (76 mm) wide aluminum steps mounted on 12-inch (305 mm) centers to 2-7/8 inch (73 mm) aluminum side rails. |
| | | | 3. | Slope for Ladders 10 feet and Greater: 70 degrees; 4-inch (102 mm) wide aluminum steps mounted on 12 inch (305 mm) centers to 4-1/8 in (105 mm) aluminum side rails. |
| | | | 4. | Slope: 80 degrees; 3-inch (76 mm) wide aluminum steps mounted on 12 inch (305 mm) centers to 2-7/8 inch (73 mm) aluminum side rails. |
| | ** NOTE TO SPECIFIER ** Handrails are optional for folding ladders; delete the following paragraph if not required. |
| | | | 5. | Provide handrails of 1-1/4 in (32 mm) round serrated aluminum tubing with cast or extruded aluminum fittings and four mounting brackets. |
| | | | 6. | Fasten each step with not less than eight aluminum aircraft rivets. |
| | | | 7. | Furnish with mounting bracket-slide assemblies to allow flat storage against wall and non-marking solid rubber feet for secure installation. |
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| | | E. | Retractable Wall Ladders: |
| | | | 1. | Extruded aluminum profiles. |
| | | | 2. | Serrated rungs 1-1/8 inches (29 mm) in diameter, connected to 2-78 inch (73 mm) side rail channels with cast aluminum rung connectors, each secured to rails by means of four solid aircraft rivets. |
| | | | 3. | Furnish with retractable mounting bracket assemblies for flat storage against the wall, non-marking solid rubber feet, and rubber plugs to provide closed end protection at top of side rails. |
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| | 2.4 | FINISHES |
| | ** NOTE TO SPECIFIER ** Mill finish aluminum is standard. Custom coatings and surface treatments are available by special order. |
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| | | A. | Provide all aluminum in standard mill finish. |
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| | | B. | Factory finish all aluminum surfaces with manufacturer's standard powder coating system. |
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| | PART 3 | EXECUTION |
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| | 3.1 | EXAMINATION |
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| | | A. | Do not begin installation until substrates have been properly prepared. |
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| | | B. | If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding. |
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| | 3.2 | INSTALLATION |
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| | | A. | Install in accordance with manufacturer's instructions and approved shop drawings, and in compliance with ANSI A14.3 and OSHA 1910.27. |
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| | 3.3 | PROTECTION |
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| | | A. | Protect installed products until completion of project. |
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| | | B. | Touch-up, repair or replace damaged products before Substantial Completion. |
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| | END OF SECTION |