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	SECTION 05515
	ALUMINUM LADDERS
	Copyright 2011 ARCAT, Inc. - All rights reserved
	** NOTE TO SPECIFIER ** ACL Industries, Inc.; aluminum access ladders. . This section is based on the products of ACL Industries, Inc., which is located at: 179 Elm Street Manchester, NH 03101 Tel: (603) 668-1276 Fax: (603) 668-1281 Email: constprod@aclindustries.com www.aclindustries.com . ACL Industries is dedicated to total customer satisfaction and is an ISO 9001 Registered manufacturer. We produce a wide range of fixed access ladders, caged ladders, ship ladders, safety stair nosings, repair treads, handrail and miscellaneous fabricated products. Whether your requirements are for a single item or a complete assembly, ACL Industries has the expertise and capacity to handle the job.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete types of ladders below not relevant to this project. Refer to Part 2 of this Section for individual models of the ladder types listed below.
		A.	Fixed aluminum access ladders.
		B.	Caged aluminum access ladders.
		C.	Inclined aluminum access ladders.
	1.2	RELATED SECTIONS
		A.	Section 06100 - Rough Carpentry: Blocking in stud walls and partitions for anchorage of access ladders.
		B.	Section 07725 - Roof Hatches: Manufactured roof hatch to be accessed by aluminum ladders.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
		A.	ANSI A14.3 - Ladders, Fixed, Safety Requirements.
		B.	ASTM B209 - Aluminum and Aluminum-Alloy Sheet and Plate.
		C.	ASTM B211 - Aluminum-Alloy Extruded Bar, Rod, Wire, Shape, and Tube.
		D.	ISO 9001:2000 - Quality Management Systems - Requirements.
	1.4	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		B.	Product Data: Manufacturer's data sheets on each product to be installed, including model number, material, and finish.
		C.	Shop Drawings: Manufacturer's shop drawings indicating elevations, dimensions, connections, and size of fasteners.
	1.5	QUALITY ASSURANCE
		A.	Regulatory Requirements: Comply with ANSI A14.3.
		B.	Manufacturer Qualifications: Provide products from a company which is ISO 9001 Registered.
	1.6	DELIVERY, STORAGE, AND HANDLING
		A.	Deliver and store products in manufacturer's unopened packaging until ready for installation. Handle in accordance with manufacturer's recommendations.
	PART 2	PRODUCTS
	2.1	MANUFACTURER
		A.	Acceptable Manufacturer: ACL Industries, Inc., which is located at: 179 Elm St. ; Manchester, NH 03101-2706; Tel: 603-668-1276; Fax: 603-668-1281; Email: constprod@aclindustries.com ; Web: www.aclindustries.com, which is located at: ; , ; Email: request info (); Web:
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Substitutions: Not permitted.
		C.	Requests for substitutions will be considered in accordance with provisions of Section 01600. Substitutions will only be considered from companies which are ISO 9001 Registered.
	** NOTE TO SPECIFIER ** Delete types below which are not required for the project.
	2.2	FIXED ALUMINUM ACCESS LADDERS
	** NOTE TO SPECIFIER ** Light duty vertical fixed access ladders are used for heights up to 20 feet (6100 mm) maximum, mounted with side rails 3 inches (76 mm)above the finish floor.
		A.	Light Duty, Hatch Access Ladder:
			1.	Model Number: ACL-100A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Side Rails: 1-3/4 inches (45 mm) wide by 1-1/4 (32 mm) inches deep channels with 0.140 inch (3.5 mm) wall thickness.
			6.	Rungs: 1.03 inches (26 mm) wide by 1.442 inches (36 mm) deep channels with 0.080 inch (2 mm) wall thickness with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Contact the manufacturer for other lengths.
			7.	Rung Length: 18 inches (457 mm).
			8.	Rung Length: 24 inches (610 mm).
	** NOTE TO SPECIFIER ** Heavy duty vertical fixed access ladders are used for heights up to 20 feet (6100 mm) maximum, mounted with side rails 3 inches (76 mm) above the finish floor.
		B.	Heavy Duty, Hatch Access Ladder:
			1.	Model Number: ACL-200A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness.
			6.	Rungs: 1-1/4 inches (32 mm) wide by 1-1/4 inches (32 mm) tube with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Contact the manufacturer for other lengths.
			7.	Rung Length: 18 inches (457 mm).
			8.	Rung Length: 24 inches (610 mm).
	** NOTE TO SPECIFIER ** Heavy duty roof over rail extension ladders are used for heights up to 20 feet (6100 mm) maximum, mounted with side rails 3 inches (76 mm) above the finish floor or with side rails anchored to floor with brackets.
		C.	Heavy Duty, Roof Over Rail Extension Ladder:
			1.	Model Number: ACL-201A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness.
	** NOTE TO SPECIFIER ** Delete rail extension type below which is not required.
			6.	Rail Extension Above Roof Line 42 inches (1065 mm).
			7.	Rail Extension Above Parapet: 42 inches (1065 mm).
			8.	Extension: At top of side rails provide 19 inch (480 mm) extension, 28 inches (710 mm) high, constructed from 1-1/4 inch (32 mm) square tube grab bars with corrugated surfaces.
			9.	Rungs: 1-1/4 inches (32 mm) wide by 1-1/4 inches (32 mm) tube with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Contact the manufacturer for other lengths.
			10.	Rung Length: 18 inches (457 mm).
			11.	Rung Length: 24 inches (610 mm).
	** NOTE TO SPECIFIER ** Heavy duty return to rear of parapet ladders are used for heights up to 20 feet (6100 mm) maximum, mounted with side rails 3 inches (76 mm) above the finish floor or with side rails anchored to floor with brackets.
		D.	Heavy Duty, Return to Rear of Parapet Ladder:
			1.	Model Number: ACL-202A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Cross Over Span: As determined by width of parapet wall and as indicated on the Drawings.
			6.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness. Extend rails 42 inches (1065 mm) above parapet. Provide rails on opposite side mounted to rear of parapet and extending 42 inches (1065 mm) above parapet and below parapet to roof line.
			7.	Grab Bars: Connect front and rear side rails with 4 pairs of 1-1/4 inch (32 mm) square tube grab bars with corrugated surfaces.
			8.	Rungs: 1-1/4 inches (32 mm) wide by 1-1/4 (32 mm) inches tube with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Contact the manufacturer for other lengths.
			9.	Rung Length: 18 inches (457 mm).
			10.	Rung Length: 24 inches (610 mm).
	** NOTE TO SPECIFIER ** Heavy duty with platform and return to rear of parapet ladders are used for heights up to 20 feet (6100 mm) maximum, mounted with side rails 3 inches (76 mm) above the finish floor or with side rails anchored to floor with brackets.
		E.	Heavy Duty, With Platform and Return to Rear of Parapet Ladder:
			1.	Model Number: ACL-203A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Cross Over Span: As determined by width of parapet wall and as indicated on the Drawings.
			6.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness. Extend rails 42 inches (1065 mm) above parapet. Provide rails on opposite side mounted to rear of parapet and extending 42 inches (1065 mm) above parapet and below parapet to roof line.
			7.	Grab Bars: Connect front and rear side rails with 4 pairs of 1-1/4 inch (32 mm) square tube grab bars with corrugated surfaces.
			8.	Platform: Provide cross over platform fabricated from 6 inches (152 mm) wide by 1-3/4 inches (45 mm) deep aluminum treads with corrugated surface.
			9.	Rungs: 1-1/4 inches (32 mm) wide by 1-1/4 inches (32 mm) tube with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Contact the manufacturer for other lengths.
			10.	Rung Length: 18 inches (457 mm).
			11.	Rung Length: 24 inches (610 mm).
		F.	Accessories:
			1.	Wall Brackets: 2 inches (50 mm) by 1/4 inch (6 mm) minimum flat bar aluminum wall brackets.
	** NOTE TO SPECIFIER ** Delete below if floor brackets not required.
			2.	Floor Brackets: Anchor side rails to floor with 2 by 1/4 inch (50 by 6 mm) minimum flat bar aluminum floor brackets. Allow 7 inches (180 mm) minimum clearance from wall to center line of rungs.
	** NOTE TO SPECIFIER ** Delete below if security door not required. Hinged security doors cover bottom ladder rungs and prevent unauthorized roof access
			3.	Security Door: Hinged security door to cover bottom rungs and prevent unauthorized roof access. Fabricate from 11 gage flat aluminum sheet covering front of ladder. Provide side flanges extending toward wall and meeting aluminum flange mounted to wall. Equip door with continuous aluminum hinge and cam lock with key.
	** NOTE TO SPECIFIER ** Delete below if safety post extension not required. As an option, safety post extension can be provided with access ladder rather than with roof access hatch specified in another section.
			4.	Safety Post Extension:. Post extension for fixed ladders constructed of tubular aluminum sections with adjustable mounting brackets for attachment to top of ladder. Upward and downward movement shall be controlled by manual operation and include mechanical pin lock mechanism when fully extended.
	2.3	CAGED ALUMINUM ACCESS LADDERS
	** NOTE TO SPECIFIER ** Caged roof hatch rail extension ladders are used for heights from 20 feet to 30 feet (6100 mm to 9150 mm) maximum, mounted with side rails 3 inches (76 mm) above the finish floor.
		A.	Vertical Caged Roof Hatch Rail Extension Ladder:
			1.	Model Number: ACL-300A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness.
			6.	Rungs: 1-1/4 inches (32 mm) wide by 1-1/4 inches (32 mm) tube with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Contact the manufacturer for other lengths.
			7.	Rung Length: 18 inches (457 mm).
			8.	Rung Length: 24 inches (610 mm).
	** NOTE TO SPECIFIER ** Caged roof over rail extension ladders are used for heights from 20 feet to 30 feet (6100 mm to 9150 mm) maximum, mounted with side rails 3 inches (76 mm) above the finish floor.
		B.	Vertical Caged Roof Over Rail Extension Ladder:
			1.	Model Number: ACL-301A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness.
	** NOTE TO SPECIFIER ** Delete rail extension type below which is not required.
			6.	Rail Extension Above Roof Line 42 inches (1065 mm).
			7.	Rail Extension Above Parapet: 42 inches (1065 mm).
			8.	Extension: At top of side rails provide 19 inch (483 mm) extension, 28 inches (710 mm) high, constructed from 1-1/4 inch (32 mm) square tube grab bars with corrugated surfaces.
			9.	Rungs: 1-1/4 inches (32 mm) wide by 1-1/4 (32 mm) inches tube with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Preferred with for caged access ladders is 24 inches (610 mm).
			10.	Rung Length: 18 inches (457 mm).
			11.	Rung Length: 24 inches (610 mm).
	** NOTE TO SPECIFIER ** Caged return to rear of parapet ladders are used for heights from 20 feet to 30 feet (6100 mm to 9150 mm) maximum, mounted with side rails 3 inches (76 mm) above the finish floor.
		C.	Vertical Caged Return to Rear of Parapet Ladder:
			1.	Model Number: ACL-302A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Cross Over Span: As determined by width of parapet wall and as indicated on the Drawings.
			6.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness. Extend rails 42 inches (1065 mm) above parapet. Provide rails on opposite side mounted to rear of parapet and extending 42 inches (1065 mm) above parapet and below parapet to roof line.
			7.	Grab Bars: Connect front and rear side rails with 4 pairs of 1-1/4 inch (32 mm) square tube grab bars with corrugated surfaces.
			8.	Rungs: 1-1/4 inches (32 mm) square tube with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Preferred width for caged access ladders is 24 inches.
			9.	Rung Length: 18 inches (457 mm).
			10.	Rung Length: 24 inches (610 mm).
	** NOTE TO SPECIFIER ** Caged ladders with platform and return to rear of parapet are used for heights from 20 feet to 30 feet maximum, mounted with side rails 3 inches above the finish floor.
		D.	Vertical Caged Ladder With Platform and Return to Rear of Parapet:
			1.	Model Number: ACL-303A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Cross Over Span: As determined by width of parapet wall and as indicated on the Drawings.
			6.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness. Extend rails 42 inches (1065 mm) above parapet. Provide rails on opposite side mounted to rear of parapet and extending 42 inches (1065 mm) above parapet and below parapet to roof line.
			7.	Grab Bars: Connect front and rear side rails with 4 pairs of 1-1/4 inch (32 mm) square tube grab bars with corrugated surfaces.
			8.	Platform: Provide cross over platform fabricated from 6 inches (152 mm) wide by 1-3/4 inches (45 mm) deep aluminum treads with corrugated surface.
			9.	Rungs: 1-1/4 inches (32 mm) square tube with serrated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Preferred width for caged access ladders is 24 inches (610 mm).
			10.	Rung Length: 18 inches (457 mm).
			11.	Rung Length: 24 inches (610 mm).
	** NOTE TO SPECIFIER ** Caged ladders with intermediate platforms and roof over rail are used for heights over 30 feet (9150 mm), mounted with side rails 3 inches (76 mm) above the finish floor.
		E.	Vertical Caged Ladder With Intermediate Platforms and Roof Over Rail:
			1.	Model Number: ACL-390A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Revise below if height is to be included in the specifications.
			4.	Nominal Height: As indicated on the Drawings.
			5.	Configuration: Configure ladder with multiple caged vertical ladder segments offset from each other and connected with intermediate platform with guardrail as indicated on the Drawings.
	** NOTE TO SPECIFIER ** Insert length below if length of segments is to be included in the specifications.
				a.	Lower Segment: ______ feet.
				b.	Upper Segment: ______ feet.
			6.	Side Rails: 1-3/4 inches (45 mm) wide by 3 inch (76 mm) tubes with 1/8 inch (3 mm) wall thickness.
	** NOTE TO SPECIFIER ** Delete rail extension type below which is not required.
			7.	Rail Extension Above Roof Line 42 inches (1065 mm).
			8.	Rail Extension Above Parapet: 42 inches (1065 mm).
			9.	Extension: At top of upper segment side rails provide 19 inch (483 mm) extension, 28 inches (710 mm) high. Fabricate from 1-1/4 inch (32 mm) square tube grab bars with corrugated surfaces.
			10.	Rungs: 1-1/4 inches (32 mm) square tube with corrugated surfaces and capable of 1,000 pound (455 kg) load. Space 12 inches (310 mm) on center. Attach rungs in centerline of side rails by welding.
	** NOTE TO SPECIFIER ** Delete rung length below which is not required. Preferred width for caged access ladders is 24 inches (610 mm).
			11.	Rung Length: 18 inches (457 mm).
			12.	Rung Length: 24 inches (610 mm).
			13.	Intermediate Platform: Provide intermediate cross over platform fabricated from 6 inch (152 mm) wide by 1-3/4 inch (45 mm) deep aluminum treads with corrugated surface.
			14.	Frame: 5 inch (127 mm) channel.
			15.	Guardrail: At intermediate platform provide guardrail fabricated from 1-1/4 inch (32 mm) square tube grab bars with corrugated surfaces. Guardrail shall be 42 inches (1065 mm) high and connect side rails of two ladder segments as detailed on the Drawings and approved shop drawings.
		F.	Safety Cage:
			1.	Equip ladders with safety cages as details on the Drawings and approved shop Drawings. Fabricate from 2 inches (50 mm) wide by 1/4 inch (6 mm) thick aluminum vertical strips and horizontal loops welded for form a cage around the ladder.
				a.	Bottom Loop Radius: 17-1/2 inches (445 mm).
				b.	Radius of Other Loops: 13-1/2 inches (343 mm).
				c.	Vertical Strips: 7 vertical strips equally spaced around perimeter of cage.
				d.	Horizontal Loops: 48 inches (1220 mm) maximum spacing.
			2.	Minimum clearance from ladder to back of cage shall be 27 inches (686 mm).
			3.	Start of Cage:
	** NOTE TO SPECIFIER ** Delete cage starting locations not required from list following.
				a.	Cage Start Above Grade: 7 feet (2135 mm).
				b.	Cage Start Above Grade: 8 feet (2440 mm).
				c.	Cage Start Above Intermediate Platform: 7 feet (2135 mm).
				d.	Cage Start Above Intermediate Platform: 8 feet (2440 mm).
				e.	Cage Start Above Roof Level: 7 feet (2135 mm).
				f.	Cage Start Above Roof Level: 8 feet (2440 mm).
			4.	Extend safety cage 42 inches (1065 mm) minimum above top rung and attach to side rails as detailed on the Drawings and approved shop drawings.
		G.	Accessories:
			1.	Wall Brackets: 2 inch (50 mm) by 1/4 inch (6 mm) minimum flat bar aluminum wall brackets.
	** NOTE TO SPECIFIER ** Delete below if security door not required. Hinged security doors cover bottom ladder rungs and prevent unauthorized roof access
			2.	Security Door: Hinged security door to cover bottom rungs and prevent unauthorized roof access. Fabricate from 11 gage flat aluminum sheet covering front of ladder. Provide side flanges extending toward wall and meeting aluminum flange mounted to wall. Equip door with continuous aluminum hinge and cam lock with key.
	** NOTE TO SPECIFIER ** Delete below if safety post extension not required. As an option, safety post extension can be provided with access ladder rather than with roof access hatch specified in another section.
			3.	Safety Post Extension:. Post extension for fixed ladders constructed of tubular aluminum sections with adjustable mounting brackets for attachment to top of ladder. Upward and downward movement shall be controlled by manual operation and include mechanical pin lock mechanism when fully extended.
	2.4	INCLINED ALUMINUM ACCESS LADDERS
		A.	Ship Ladder with Handrail:
			1.	Model Number: ACL-501A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			4.	Accommodation Height: As indicated on the Drawings.
			5.	Accommodation Height: ______ feet (_____ mm).
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. Preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
			6.	Angle of Inclination: As indicated on the Drawings.
			7.	Angle of Inclination: 75 degrees.
			8.	Treads: 6 inches wide by 1-3/4 inches (45 mm) deep by 24 inches (610 mm) long aluminum channel shaped section. Equally space treads. Connect treads to stringers with bolts to allow for future replacement.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. Standard tread is first paragraph below; optional tread is second paragraph below.
			9.	Tread Surface: Corrugated.
			10.	Tread Surface: Abrasive filled.
			11.	Stringers: 6 inches (152 mm) by 2 inches (50 mm) aluminum channel.
			12.	Handrail: 1-1/4 inches (32 mm) diameter aluminum pipe.
				a.	Form returns with 6 inch (152 mm) radius.
				b.	Attach rail to stringer with pipe sections spaced at approximately 30 inches (760 mm) on center such that rail projects approximately 6 inches (152 mm) above stringer.
				c.	Locate bottom of handrail 36 inches (915 mm) above finished floor.
				d.	Extend rail above ladder such that top of rail is 42 inches (1065 mm) above roof level.
		B.	Ship Ladder with Roof Access Hatch:
			1.	Model Number: ACL-502A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			4.	Accommodation Height: As indicated on the Drawings.
			5.	Accommodation Height: ______ feet (_____ mm).
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. Preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
			6.	Angle of Inclination: As indicated on the Drawings.
			7.	Angle of Inclination: 75 degrees.
			8.	Treads: 6 inches (152 mm) wide by 1-3/4 inches (45 mm) deep by 24 inches (610 mm) long aluminum channel shaped section. Equally space treads. Connect treads to stringers with bolts to allow for future replacement.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. Standard tread is first paragraph below; optional tread is second paragraph below.
			9.	Tread Surface: Corrugated.
			10.	Tread Surface: Abrasive filled.
			11.	Stringers: 6 inches (152 mm) by 2 inches (50 mm) aluminum channel.
			12.	Handrail: 1-1/4 inches (32 mm) diameter aluminum pipe.
				a.	Form returns with 6 inch (152 mm) radius.
				b.	Attach rail to stringer with pipe sections spaced at approximately 30 inches (610 mm) on center such that rail projects approximately 6 inches (152 mm) above stringer.
				c.	Locate bottom of handrail 36 inches (915 mm) above finished floor.
				d.	Extend rail above ladder such that top of rail is 36 inches (915 mm) above roof level.
		C.	Ship Ladder with Cross Over Access:
			1.	Model Number: ACL-503A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			4.	Accommodation Height: As indicated on the Drawings.
			5.	Accommodation Height: _____) feet (_____ mm).
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. Preferred angle of inclination is 60 degrees. Minimum angle is also 60 degrees.
			6.	Angle of Inclination: As indicated on the Drawings.
			7.	Angle of Inclination: 60 degrees.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			8.	Treads: 6 inches (152 mm) wide by 1-3/4 inches (45 mm) deep by 24 inches (610 mm) long aluminum channel shaped section with corrugated surface. Equally space treads. Connect treads to stringers with bolts to allow for future replacement.
			9.	Treads: 6 inches (152 mm) wide by 1-3/4 inches (45 mm) deep by 24 inches (610 mm) long aluminum channel shaped section with abrasive filled surface (SNAT). Equally space treads. Connect treads to stringers with bolts to allow for future replacement.
			10.	Configuration: Two opposing inclined ladders connected by cross over platform as shown on the Drawings and approved shop drawings.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
				a.	Distance Between Base of Opposing Ladders: As indicated on the Drawings.
				b.	Distance Between Base of Opposing Ladders: ______ feet (_____ mm).
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
				c.	Cross Over Span: As indicated on the Drawings.
				d.	Cross Over Span: ______ inches (_____ mm).
			11.	Stringers: 6 inches (152 mm) by 2 inches (50 mm) aluminum channel. Top of opposing stringers shall be connected with 6 inch (152 mm) by 2 inch (50 mm) channel which forms support for platform.
			12.	Platform: Cross over platform at top of ship ladder fabricated from 6 inch (152 mm) wide by 1 inch (25 mm) deep aluminum treads with corrugated surfaces.
			13.	Handrail and Guardrail: 1-1/4 (32 mm) inches diameter aluminum pipe.
				a.	Form returns with 6 inch (152 mm) radius.
				b.	Provide 42 inch (1065 mm) high guardrail on either side of cross over platform.
				c.	Attach rail to stringer with pipe sections spaced at approximately 30 inches (760 mm) on center such that rail projects approximately 6 inches (152 mm) above stringer.
				d.	Locate bottom of handrail 36 inches (915 mm) above finished floor.
				e.	Extend rail above ladder such that rail intersects and joints top of guardrail.
				f.	Internal double lock handrail splice fittings as required for ladders shipped in sections.
		D.	Ship Ladder with Platform:
			1.	Model Number: ACL-504A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			4.	Accommodation Height: As indicated on the Drawings.
			5.	Accommodation Height: ______ feet (_____ mm).
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. Preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
			6.	Angle of Inclination: As indicated on the Drawings.
			7.	Angle of Inclination: 75 degrees.
			8.	Treads: 6 inches (152 mm) wide by 1-3/4 inches (45 mm) deep by 24 inches (610 mm) long aluminum channel shaped section with corrugated tread surface. Equally space treads. Connect treads to stringers with bolts to allow for future replacement.
			9.	Stringers: 6 inches (152 mm) by 2 inches (50 mm) aluminum channel. Top of stringers shall return horizontally to wall and form support for platform.
			10.	Platform: Provide 24 inch (610 mm) wide platform at top of ship ladder fabricated from 6 inch wide by 2 inch (50 mm) deep aluminum treads with corrugated surface.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
				a.	Platform Length: As indicated on the Drawings.
				b.	Platform Length: ______ feet (_____ mm).
			11.	Handrail and Guardrail: 1-1/4 inches (32 mm) diameter aluminum pipe.
				a.	Form returns with 6 inch (152 mm) radius.
				b.	Provide 42 inch (1065 mm) high guardrail on either side of cross over platform.
				c.	Attach rail to stringer with pipe sections spaced at approximately 30 inches (760 mm) on center such that rail projects approximately 6 inches (152 mm) above stringer.
				d.	Locate bottom of handrail 36 inches (915 mm) above finished floor.
				e.	Extend rail above ladder such that rail intersects and joints top of guardrail.
		E.	Folding Mezzanine-Access Ship Ladder:
			1.	Model Number: ACL-505A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			4.	Accommodation Height: As indicated on the Drawings.
			5.	Accommodation Height: ______ feet (_____ mm).
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. Preferred angle of inclination is 70 degrees. Minimum angle is 60 degrees.
			6.	Angle of Inclination: As indicated on the Drawings.
			7.	Angle of Inclination: 70 degrees.
			8.	Treads: 1-1/4 inch (32 mm) square tubes by 24 inches (610 mm) long with corrugated surfaces. Equally space treads. Attach treads to stringers by welding.
			9.	Operation: Folding ladder shall store against wall with stringers in vertical position. Top of ladder shall pivot with sliding hinge assembly with stainless steel pin to use inclined position
			10.	Stringers: 3 inches by 1 inch (76 mm by 25 mm) aluminum channel. Equip bottom of stringer with non-skid rubber foot. Top of stringers shall be supported by wall bracket fabricated from 3 inches by 1/4 inch (76 mm by 6 mm) thick aluminum plate.
			11.	Handrail and Guardrail: 1-1/4 (32 mm) inches diameter aluminum pipe.
				a.	Form returns with 6 inch (152 mm) radius.
				b.	Attach rail to stringer such that rail projects approximately 6 inches (152 mm) above stringer.
				c.	Locate bottom of handrail 36 inches (915 mm) above finished floor.
				d.	Extend rail above ladder to form guardrail extending 42 inches (1065 mm) above top tread.
		F.	Counterbalanced Swing Up Deck Access Ship Ladder:
			1.	Model Number: ACL-507A by ACL Industries.
			2.	Materials: ASTM B221, Alloy 6063, Temper T-6, non-spark extruded aluminum and ASTM B209, Alloy 6063 Temper T-6 sheet aluminum.
			3.	Aluminum Finish: Mill finish.
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs.
			4.	Accommodation Height: As indicated on the Drawings.
			5.	Accommodation Height: ______ feet (_____ mm).
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. Preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
			6.	Angle of Inclination: As indicated on the Drawings.
			7.	Angle of Inclination: 75 degrees.
			8.	Operation: Swing up deck access ladder attached to structure with pivoting counterbalanced mechanism. Ladder shall store horizontally and be placed in inclined access position with pull rope.
			9.	Stringers: 6 inches by 2 inches (152 mm by 50 mm) aluminum channel. Attach lead counterweights to top sides of stringers. Design ladder such that stingers project above upper floor level when ladder is inclined position. Equip stringer extensions with safety chain guards.
			10.	Handrail and Guardrail: 1-1/4 inches (32 mm) diameter aluminum pipe.
				a.	Form returns with 6 inch (152 mm) radius.
				b.	Attach rail to stringer such that rail projects 36 inches (915 mm) above treads when ladder is in inclined position.
			11.	Operating Mechanism: Pivoting hinged counterbalanced mechanism attached to support structure with brackets.
		G.	Accessories:
			1.	Support Brackets: Top wall brackets and bottom floor brackets fabricated from 2 inch (50 mm) by 14 inch (6 mm) minimum flat bar aluminum.
	** NOTE TO SPECIFIER ** Delete if not required. Not available on 505 Model.
			2.	Non-Slip Treads: SNAT abrasive-filled non-slip treads.
	PART 3	EXECUTION
	3.1	PREPARATION
		A.	Do not begin installation until substrates have been properly prepared. Notify Architect of unsatisfactory conditions before commencing work.
		B.	Field verify required dimensions. Coordinate with supporting construction to ensure adequate blocking and support.
	** NOTE TO SPECIFIER ** Delete below if no roof hatch.
		C.	Coordinate with requirements of roof hatch to ensure height and position of ladder is compatible with roof hatch curb and required clearances.
		D.	Isolate dissimilar metals to prevent electrolysis with bituminous paint or non-absorptive isolation pad to prevent contact.
	3.2	INSTALLATION
		A.	Install ladders and accessories in accordance with manufacturer's instructions and approved submittals.
			1.	Securely anchor support brackets with fasteners of type and size recommended by manufacturer.
			2.	Place brackets at top and bottom and at 48 inches (1219 mm) maximum intermediate points.
			3.	Allow 7 inches (180 mm) minimum clearance from wall to center line of rungs.
			4.	Inspect ladder to verify proper and secure installation.
	** NOTE TO SPECIFIER ** Delete below if security door is not required for fixed or caged access ladders.
		B.	Install security door assembly and adjust for smooth operation.
	** NOTE TO SPECIFIER ** Delete below if safety post extension is not required for fixed or caged access ladders.
		C.	Install safety post extension by attaching to top 2 rungs of ladder, centered between side rails. Adjust post to extend 42 inches (1065 mm) above top rung when roof hatch is open and post is fully extended.
	3.3	CLEANING
		A.	Clean ladders as recommended by manufacturer. Do not use abrasive agents, steel wool or chemicals.
	END OF SECTION