ARCAT, Inc.
SECTION 05515ALUMINUM ACCESS LADDERSDisplay hidden notes to specifier. (Don't know how? Click Here) Copyright 2014 - 2014 ARCAT, Inc. - All rights reserved** NOTE TO SPECIFIER ** UPNOVR, Inc.; Aluminum access ladder products..This section is based on the products of UPNOVR, Inc., which is located at:3 Crane Way Hooksett, NH 03106Tel: 603-625-8639Email: request info (constprod@)Web: [ Click Here ] for additional information.UPNOVR, Inc. is your access solution provider. We fabricate high quality aluminum ladders that are ideal for commercial, industrial, facility and institutional applications. We offer many styles of both vertical and inclined ladders that are custom fabricated for your unique site condition. Our ladders ship installation ready, requiring only minimal assembly, saving you valuable time and money on your project. As an ISO-9001 certified company we are committed to quality and all of our ladders meet the requirements of OSHA 1910.27 and ANSI 14.3. In addition to our access ladders we also manufacture anti slip nosings for new and existing stairs and aluminum guardrail. Our extruded aluminum nosings offer an economical and attractive way to provide safe stair access on your projects. Aluminum guardrails are a light weight, high strength and provide a maintenance free, long lasting option.
GENERAL
SECTION INCLUDES
** NOTE TO SPECIFIER ** Delete items below not required for project.
Fixed Aluminum Access Ladders.
Fixed Aluminum Inclined Ladders.
Fixed, wall mounted, vertical access ladders with integral safety cages
RELATED SECTIONS
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
Section 06100 - Rough Carpentry: Blocking in metal stud walls and partitions for anchorage of access ladders.
Section 07725 - Roof Hatch: Manufactured roof hatch to be accessed by aluminum ladder.
Section 07726 - Ladder Safety Post Extension: Manufactured safety post extension to be attached to roof access ladder.
REFERENCES
** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
ASTM B 209 - Aluminum and Aluminum-Alloy Sheet and Plate.
ASTM B 221 - Aluminum-Alloy Extruded Bar, Rod, Wire, Shape, and Tube.
ANSI A14.3 - Ladders, Fixed, Safety Requirements.
DESIGN / PERFORMANCE REQUIREMENTS
Access ladders shall be designed and installed to comply with ANSI A14.3. and OHSA 1910.27
SUBMITTALS
Submit under provisions of Section 01300.
Product Data: Manufacturer's data sheets on each product to be used, including:
Preparation instructions and recommendations.
Storage and handling requirements and recommendations.
Installation methods.
Maintenance instructions.
Shop Drawings: Shop drawings showing elevations, dimensions, connections, and fabrication details including templates for anchors and bolts specified for installation under other sections.
Closeout Submittals: Provide manufacturer's maintenance instructions that include recommendations for periodic cleaning and maintenance of all components.
QUALITY ASSURANCE
Manufacturer Qualifications: Firm specializing in manufacture of access ladders, with minimum 10 years documented experience.
Installer Qualifications: Installer with experience on projects of a similar size and scope with similar installation conditions.
DELIVERY, STORAGE, AND HANDLING
Store products in manufacturer's unopened packaging until ready for installation.
Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
SEQUENCING
Ensure that locating templates and other information required for installation of products of this section are furnished to affected trades in time to prevent interruption of construction progress.
Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.
PRODUCTS
MANUFACTURERS
Acceptable Manufacturer: UPNOVR, Inc., which is located at: 3 Crane Way ; Hooksett, NH 03106; Tel: 603-625-8639; Email: request info (constprod@); Web:
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
Substitutions: Not permitted.
Requests for substitutions will be considered in accordance with provisions of Section 01600.
** NOTE TO SPECIFIER ** Edit the following General paragraphs as required and applicable to project LEED requirements. Coordinate project locations for applicable regional credits. Delete the paragraphs that are not applicable or if LEED is not applicable.
MATERIALS
Extruded aluminum: ASTM B221, Alloy 6061 Temper T-6, non-spark.
Sheet aluminum: ASTM B209 6061 Temper T-6.
Finish:
** NOTE TO SPECIFIER ** Select one of the following two paragraphs and delete the one not required. Standard access ladder finish is mill finished aluminum. Electrostatically applied, powder paint color coatings can be provided as a special order. Contact the manufacturer for information and assistance in specifying this special finish and insert below.
Mill finished aluminum.
Other: ____________
*** NOTE TO SPECIFIER ** UPNOVR, Inc. manufacturers 5 models of fixed, wall mounted, vertical access ladders. Select required type from the following and delete those not required.
VERTICAL FIXED ACCESS LADDERS
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify light duty, hatch access ladder, Model U-100. This model is used for heights up 15 feet maximum and is mounted with side rails 3 inches above finish floor.
Light duty, hatch access ladder; Model No. U-100.
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches wide by 1-1/4 inches deep channels with 0.140 inch wall thickness.
Rungs: 1.03 inches wide by 1.442 inches deep channels with 0.080 inch wall thickness with serrated surfaces and capable of 700 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify heavy duty hatch access ladder, Model U-200. This model is used for heights up 20 feet maximum and is mounted with side rails 3 inches above finish floor.
Heavy duty, hatch access; Model No. U 200.
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches wide by 3 inches deep channels with 1/8 inch wall thickness.
*** NOTE TO SPECIFIER ** Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Rungs: 1-1/4 wide by 1-1/4 inches tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify heavy duty roof over rail extension ladder, Model U-201. This model is used for heights up 20 feet maximum and may be mounted with side rails 3 inches above finish floor or with side rails anchored to floor with brackets.
Heavy duty, roof over rail extension ladder; Model No. U-201
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches wide by 3 inches deep channels with 1/8 inch wall thickness. Extend rails 42 inches above roof line or parapet.
Extension: Provide at top of side rails an 19 inches extension, 28 inches high, constructed from 1-1/4 inches square tube grab bars with corrugated surfaces.
Rungs: 1-1/4 wide by 1-1/4 inches tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify heavy duty return to rear of parapet ladder, Model U-202. This model is used for heights up 20 feet maximum and may be mounted with side rails 3 inches above finish floor or with side rails anchored to floor with brackets.
Heavy duty, return to rear of parapet ladder; Model No. U-202.
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Parapet Thickness:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs and insert the cross over span required or reference the Drawing. Parapet thickness or cross over span will be determined by width of parapet wall.
_____ feet.
As indicated on Drawings.
Top of Parapet to Roof:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs and insert the the height from the top of parapet to roof required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches by 3 inches tubes with 1/8 inch wall thickness. Extend rails 42 inches above parapet. Provide rails on opposite side mounted to rear of parapet and extending 42 inches above parapet and below parapet to roof line.
Grab bars: Connect front and rear side rails with 4 pairs of 1-1/4 inches square tube grab bars with corrugated surfaces.
Rungs: 1-1/4 wide by 1-1/4 inches tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify heavy duty with platform and return to rear of parapet ladder, Model U-203. This model is used for heights up 20 feet maximum and may be mounted with side rails 3 inches above finish floor or with side rails anchored to floor with brackets.
Heavy duty with platform and return to rear of parapet ladder; Model No. U-203.
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Parapet Thickness:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs and insert the cross over span required or reference the Drawing. Parapet thickness or cross over span will be determined by width of parapet wall.
_____ feet.
As indicated on Drawings.
Top of Parapet to Roof:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs and insert the the height from the top of parapet to roof required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches by 3 inches tubes with 1/8 inch wall thickness. Extend rails 42 inches above parapet. Provide rails on opposite side mounted to rear of parapet and extending 42 inches above parapet and below parapet to roof line.
Grab bars: Connect front and rear side rails with 4 pairs of 1-1/4 inches square tube grab bars with corrugated surfaces.
Platform: Provide cross over platform fabricated from 6 inches wide by 1-3/4 inches deep aluminum treads with corrugated surface.
Rungs: 1-1/4 wide by 1-1/4 inches tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Select the accessories required from the following paragraphs. Delete those not applicable.
Accessories:
Support brackets:
Wall brackets: Support ladder at top and bottom and at 48 inches maximum intermediate points with 2 by 1/4 inch minimum flat bar aluminum wall brackets. Allow 7 inches minimum clearance from wall to centerline of rungs.
*** NOTE TO SPECIFIER ** Select the following paragraph if side rails are to be anchored to floor. Delete if not applicable.
Floor brackets: Anchor side rails to floor with 2 by 1/4 inch minimum flat bar aluminum floor brackets. Allow 7 inches minimum clearance from wall to centerline of rungs.
*** NOTE TO SPECIFIER ** Select the following paragraph for optional security door/ Delete if not required.
Security Door: Provide hinged security door to cover bottom rungs and prevent unauthorized roof access.
Construction: Fabricate from 11 gauge 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 lock.
*** NOTE TO SPECIFIER ** Select the following paragraph for optional safety post extension in conjunction with roof hatch. Delete if not required.
Safety post extension: Post extension for fixed ladders constructed of tubular aluminum sections with adjustable mounting brackets for attachment to top of ladder.
Operation: Upward and downward movement controlled by operator. Post locks when fully extended.
Use in accordance to manufacturer's instructions.
*** NOTE TO SPECIFIER ** UPNOVR, Inc. manufacturers 6 models of inclined ship ladders. Select required type from the following and delete those not required.
FIXED INCLINE LADDERS
Fixed, inclined, aluminum, standard ship ladder with handrail; Model No. U- 501.
Accommodation height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Angle of inclination:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing. Note that the preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
_____ feet.
As indicated on Drawings.
Treads: Connect treads to stringers with bolts to allow for future replacement.
*** NOTE TO SPECIFIER ** Select one of the following tread paragraphs and delete those not required.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with corrugated surface.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with abrasive filled corrugations.
Stringers: 6 by 2-1/2 inches aluminum channel.
Handrail: 1-1/4 inches diameter aluminum pipe.
Form returns with 6 inches radius.
Attach rail to stringer with pipe sections spaced at approximately 30 inches such that rail projects approximately 10 inches above stringer.
Locate bottom of handrail 36 inches above floor.
Extend rail above ladder such that top of rail is 42 inches above roof level.
Fixed, inclined, aluminum, ship ladder with roof hatch access; Model No. U-502.
Accommodation height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Angle of inclination:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing. Note that the preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
_____ feet.
As indicated on Drawings.
Treads: Connect treads to stringers with bolts to allow for future replacement.
*** NOTE TO SPECIFIER ** Select one of the following tread paragraphs and delete those not required.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with corrugated surface.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with abrasive filled corrugations.
Stringers: 6 by 2-1/2 inches aluminum channel.
Handrail: 1-1/4 inches diameter aluminum pipe.
Form returns with 6 inches radius.
Attach rail to stringer with pipe sections spaced at approximately 30 inches such that rail projects approximately 6 inches above stringer.
Extend rail above ladder such that top of rail is 10 inches above top tread and below roof hatch door.
Locate bottom of handrail 36 inches above floor.
Fixed, inclined, aluminum, ship ladder with cross over access; Model No. U-503.
Configuration: Two opposing inclined ladders connected by cross over platform as shown on Drawings.
Distance between base of opposing ladders:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the distance required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Cross over span:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the cross over span required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Clear height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Treads: Connect treads to stringers with bolts to allow for future replacement.
*** NOTE TO SPECIFIER ** Select one of the following tread paragraphs and delete those not required.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with corrugated surface.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with abrasive filled corrugations.
Stringers: 6 by 2-1/2 inches aluminum channel. Connect top of opposing stringers with 6 by 2-1/2 inches channel to form support for platform.
Platform: Provide at top of ship ladder fabricated from 6 inches wide by 1-3/4 inch deep aluminum treads with corrugated surface.
Handrail/Guardrail: 1-1/4 inches diameter aluminum pipe.
Form returns with 6 inches radius.
Provide 42 inches high guardrail on either side of cross over platform.
Attach rail to stringer with pipe sections spaced at approximately 30 inches such that rail projects approximately 10 inches above stringer.
Extend rail above ladder such that rail intersects and joins top of guardrail.
Locate bottom of handrail 36 inches above floor
Fixed, inclined, aluminum, ship ladder with platform; Model No. U-504.
Configuration: One inclined ladder connected to platform as shown on Drawings.
Accommodation height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Angle of inclination:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing. Note that the preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
_____ feet.
As indicated on Drawings.
Platform Length:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the parapet length required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Treads: Connect treads to stringers with bolts to allow for future replacement.
*** NOTE TO SPECIFIER ** Select one of the following tread paragraphs and delete those not required.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with corrugated surface.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with abrasive filled corrugations.
Stringers: 6 by 2-1/2 inches aluminum channel. Return top of stringers to wall forming a support for platform.
Handrail/Guardrail: 1-1/4 inches diameter aluminum pipe.
Form returns with 6 inches radius.
Provide 42 inches high guardrail on either side of platform.
Attach rail to stringer with pipe sections spaced at approximately 30 inches such that rail projects approximately 10 inches above stringer.
Extend rail above ladder such that top of rail intersects and joins at the top of the guardrail.
Locate bottom of handrail 36 inches above floor.
Fixed, inclined, aluminum, folding mezzanine access ship ladder; Model No. U-505.
Operation: Store ladder against wall with stringers in vertical position. Top of ladder shall pivot with sliding hinge assembly and aluminum pin to lock at inclined use position.
Accommodation height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Angle of inclination:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing. Note that the preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
_____ feet.
As indicated on Drawings.
Treads: Attach treads to stringers by welding.
Two 1-1/4 inches square tubes by 24 inches long with corrugated surfaces.
Stringers: 3 inch by 1 inch aluminum channel. Equip bottom of stringer with non-skid rubber foot. Support top of stringer with wall bracket fabricated from 3 inch by 1/4 inch thick aluminum plate.
Handrail: 1-1/4 inches diameter aluminum pipe.
Form returns with 6 inches radius.
Attach rail to stringer such that rail projects approximately 6 inches above stringer.
Locate bottom of handrail 36 inches above floor.
Extend rail above ladder such that top of rail is 42 inches above top tread.
Fixed, inclined, aluminum, folding mezzanine access ship ladder; Model No. U-506.
Operation: Designed to push up against a wall or away from a higher-traffic walking area when not in use, and installs just below a hatch door to assure safe entry and exit. Top of ladder shall pivot with sliding hinge assembly and aluminum pin to lock at inclined use position.
Accommodation height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Angle of inclination:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing. Note that the preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
_____ feet.
As indicated on Drawings.
Treads: Attach treads to stringers by welding.
Two 1-1/4 inches square tubes by 24 inches long with corrugated surfaces.
Stringers: 3 inch by 1 inch aluminum channel. Equip bottom of stringer with non-skid rubber foot. Support top of stringer with wall bracket fabricated from 3 inch by 1/4 inch thick aluminum plate.
Handrail: 1-1/4 inches diameter aluminum pipe.
Form returns with 6 inches radius.
Attach rail to stringer such that rail projects approximately 6 inches above stringer.
Locate bottom of handrail 36 inches above floor.
Extend rail above ladder such that top of rail is 42 inches above top tread.
Fixed, inclined, aluminum, counterbalanced swing down ship ladder; Model U-507.
Operation: Swing down ladder attached to upper floor structure with pivoting counterbalanced mechanism. Ladder stores horizontally and can be placed in inclined access position with pull rope.
Accommodation height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Angle of inclination:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing. Note that the preferred angle of inclination is 75 degrees. Minimum angle is 60 degrees.
_____ feet.
As indicated on Drawings.
Treads: Connect treads to stringers with bolts to allow for future replacement.
*** NOTE TO SPECIFIER ** Select one of the following tread paragraphs and delete those not required.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with corrugated surface.
6 inches wide by 1-3/4 inches deep by 24 inches wide aluminum channel shaped section with abrasive filled corrugations.
Stringers: 6 by 2-1/2 inches aluminum channel. Attach steel counter weights to top sides of stringers. Design so ladder projects above upper floor level when in an inclined position. Provide stringer extensions with safety chain guards.
Handrail: 1-1/4 inches diameter aluminum pipe.
Form returns with 6 inches radius.
Attach rail to stringer such that rail projects approximately 36 inches above stringer in inclined position.
Operating mechanism: Pivoting hinged counterbalanced mechanism attached to support structure with brackets.
*** NOTE TO SPECIFIER ** Select the accessories required from the following paragraphs. Delete those not applicable.
Accessories:
Support brackets: Support ship ladder with top wall brackets and bottom floor brackets fabricated from 2 inch by 1/4 inch minimum flat bar aluminum.
*** NOTE TO SPECIFIER ** UPNOVR, Inc. manufacturers 5 models of caged, fixed, vertical access ladders. Select required type from the following and delete those not required.
CAGED FIXED ACCESS LADDERS
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify caged roof hatch rail extension ladder; Model No. U-300. This model is used for heights from 20 to 30 feet maximum and is mounted with side rails 3 inches above finish floor.
Fixed, wall mounted, vertical, caged, aluminum, roof hatch rail extension ladder; Model No. U-300.
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches wide by 3 inches tubes with 1/8 inch wall thickness.
Rungs: 1-1/4 inches square tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify caged roof over rail extension ladder; Model No. U-301. This model is used for heights from 20 to 30 feet maximum and is mounted with side rails 3 inches above finish floor.
Fixed, wall mounted, vertical, caged, aluminum, roof over rail extension ladder; Model No. U- 301.
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches wide by 3 inches tubes with 1/8 inch wall thickness.
Extension: At top of side rails provide 19 inches extension, 28 inches high, constructed from 1-1/4 inches square tube grab bars with corrugated surfaces.
Rungs: 1-1/4 inches square tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify caged return to rear of parapet ladder; Model No. U-302. This model is used for heights from 20 to 30 feet maximum and is mounted with side rails 3 inches above finish floor.
Fixed, wall mounted, vertical, caged, aluminum, return to rear of parapet ladder; Model No. U-302.
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Top of Parapet to Roof:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs and insert the height from the top of parapet to roof required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches wide by 3 inches tubes with 1/8 inch wall thickness. Extend rails 42 inches above parapet. Provide rails on opposite side mounted to rear of parapet and extending 42 inches above parapet and below parapet to roof line.
Grab bars: Connect front and rear side rails with 4 pairs of 1-1/4 inches square tube grab bars with corrugated surfaces.
Rungs: 1-1/4 inches square tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify caged ladder with platform and return to rear of parapet; Model No. U-303. This model is used for heights from 20 to 30 feet maximum is mounted with side rails 3 inches above finish floor.
Fixed, wall mounted, vertical, caged, aluminum, ladder with platform and return to rear of parapet; Model No. U-303.
Nominal height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Parapet Thickness:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs and insert the cross over span required or reference the Drawing. Parapet thickness or cross over span will be determined by width of parapet wall.
_____ feet.
As indicated on Drawings.
Top of Parapet to Roof:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs and insert the height from the top of parapet to roof required or reference the Drawing.
_____ feet.
As indicated on Drawings.
Side rails: 1-3/4 inches wide by 3 inches tubes with 1/8 inch wall thickness. Extend rails 42 inches above parapet. Provide rails on opposite side mounted to rear of parapet and extending 42 inches above parapet and below parapet to roof line.
Grab bars: Connect front and rear side rails with 4 pairs of 1-1/4 inches square tube grab bars with corrugated surfaces.
Platform: Provide cross over platform fabricated from 6 inches wide by 1-3/4 inches deep aluminum treads with corrugated surface.
Rungs: 1-1/4 inches square tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Include the following paragraphs to specify caged roof over rail extension ladder with intermediate platforms; Model No. U-390. This model is used for heights over 30 feet is mounted with side rails 3 inches above finish floor.
Fixed, wall mounted, vertical, caged, aluminum, ladder with intermediate platforms and roof over rail; Model No. U-390.
Configuration: Ladder shall be configured with caged vertical ladder segments offset from each other and connected with intermediate platform with guardrail as indicated on Drawings.
Nominal heights of ladder segments:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing.
Lower segment _____ feet to platform.
Upper segment _____ feet from platform to roof.
As indicated on Drawings.
Side rails: 1-3/4 inches wide by 3 inches tubes with 1/8 inch wall thickness. Extend rails of upper segments 42 inches above parapet or roof level.
Extension: At top of upper segment side rails provide 19 inches extension, 28 inches high. Construct from 1-1/4 inches square tube grab bars with corrugated surfaces.
Platform: Provide intermediate platform(s) fabricated from 6 inches wide by 1-3/4 inches deep aluminum treads with corrugated surface.
Rungs: 1-1/4 inches square tube with corrugated surfaces and capable of 1,000 pounds load. Space 12 inches on center. Attach rungs in centerline of side rails by welding.
*** NOTE TO SPECIFIER ** Select length paragraph required and delete those not required. Standard rungs for vertical fixed access ladders are 18 and 24 inches long. Contact manufacturer for other lengths available as special orders.
Length: 18 inches.
Length: 24 inches.
As indicated on Drawings.
*** NOTE TO SPECIFIER ** Select the cage requirements from the following paragraphs.
Safety Cage:
Equip ladders with safety cages as detailed on Drawings.
Fabricate from 2 inches wide by 1/4 inch thick aluminum vertical strips and horizontal loops bolted to form cage around ladder.
Bottom loop radius: 17-1/2 inches.
Radius of other loops: 13-1/2 inches.
Provide 7 vertical strips equally spaced around perimeter of cage.
Space horizontal loops at 48 inches maximum.
Minimum clearance from ladder to back of cage: 27 inches.
Start Cage Height:
*** NOTE TO SPECIFIER ** Select one of the following paragraphs to insert the height required or reference the Drawing. Delete those not required.
7 feet above grade.
7 feet above intermediate platform.
7 feet above roof level.
Extend safety cage 42 inches minimum above top rung and attach to side rails as detailed on Drawings.
Safety cage to ship knocked down with connection hardware for field assembly
*** NOTE TO SPECIFIER ** Select the accessories required from the following paragraphs. Delete those not applicable.
Accessories:
Support brackets:
Wall brackets: Support ladder at top and bottom and at 48 inches maximum intermediate points with 2 by 1/4 inch minimum flat bar aluminum wall brackets. Allow 7 inches minimum clearance from wall to centerline of rungs.
*** NOTE TO SPECIFIER ** Select the following paragraph for optional security door/ Delete if not required.
Security Door: Provide hinged security door to cover bottom rungs and prevent unauthorized roof access.
Construction: Fabricate from 11 gauge flat aluminum sheet covering front of ladder. Provide side flanges extending toward wall and meeting aluminum flange mounted to wall.
Equip door with continuous stainless steel hinge and padlock hasp.
*** NOTE TO SPECIFIER ** Select the following paragraph for optional safety post extension in conjunction with roof hatch. Delete if not required.
Safety post extension: Post extension for fixed ladders constructed of tubular aluminum sections with adjustable mounting brackets for attachment to top of ladder.
Operation: Upward and downward movement controlled by operator. Post locks when fully extended.
Use in accordance to manufacturer's instructions.
FABRlCATlON
Field verify ladder dimensions prior to fabrication.
Fabricate to designs indicated on Drawings and to meet design/performance requirements specified.
Ladder rungs shall be welded construction. Ladders longer than 12 feet will be shipped in sections.
EXECUTION
EXAMINATION
Do not begin installation until substrates have been properly prepared.
*** NOTE TO SPECIFIER ** Select one of the following paragraph for Model U-100 and Model No. U-300 only and delete if not required.
Coordinate provision of access ladder with provision of roof hatch specified in Section 07725. Verify height and position of ladder is compatible with roof hatch curb.
Verify mounting substrate to ensure adequate support and blocking for attachment of brackets and support of ladder.
If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
PREPARATION
Clean surfaces thoroughly prior to installation.
Field verify dimensions prior to fabrication.
Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
INSTALLATION
Install in accordance with manufacturer's instructions.
Position ladder(s) as indicated.
Insulate dissimilar metals to prevent electrolysis with bituminous paint or non-absorptive isolation pad to prevent contact.
Securely anchor support brackets with fasteners of type and size recommended by manufacturer. Place wall brackets at top and floor brackets at bottom of ladder. Place intermediate wall brackets at 48 inches maximum.
Ensure ladder is vertical, plumb, properly aligned and rigid.
*** NOTE TO SPECIFIER ** Select one of the following paragraph for vertical access ladders with security doors only and delete if not required.
Install security door assembly and adjust for smooth operation.
*** NOTE TO SPECIFIER ** Select one of the following paragraph for ladders with s safety post extension only and delete if not required.
Safety post extension: Attach to top 2 rungs of ladder and centered between side rails. Adjust post to extend 42 inches above top rung when roof hatch is open and post is fully extended.
After installation inspect ladder to verify proper, secure, and safe installation.
Clean ladder using clean water and mild detergent. Do not use abrasive agent, steel wool, or harsh chemicals. Rinse with clean water.
PROTECTION
Protect installed products until completion of project.
Touch-up, repair or replace damaged products before Substantial Completion.
SCHEDULES
** NOTE TO SPECIFIER ** Retain Paragraph below if required to suit project requirements. Identify products by name on the Drawings or use this paragraph to define the location of each type of material to be used. The following are some examples of schedule references. Edit as required to suit project or delete and identify products on the Drawings.
:
:
END OF SECTION ................
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