The Lapeyre Stair Line
Innovative, Customized Stair Systems
TM
Lapeyre Stair
We don't miss a step.
Lapeyre Stair serves all your stair needs quickly and precisely. In-house detailing and
design ensure project accuracy – every time, on time.
An innovative, expanding product line of welded stairs, bolted stairs, alternating tread
stairs, and platform systems are available to meet your on-site assembly requirements.
Lapeyre Stair serves diverse markets with consistent results.
Commercial
Healthcare / Hospitals
Government and Military Facilities
Mid / High Rise Office Buildings
Schools
Hotels
Convention Centers
Museums
Parking Garages
Industrial
Offshore Oil Rigs
Wastewater Treatment Facilities
Warehouses
Manufacturing Plants
Freight Terminals
Residential
Mid / High Rise Residential Buildings
Dormitories
Apartment Buildings
Lapeyre Stair, Inc.
P.O. Box 50699
New Orleans, LA 70150
Telephone: 504-733-6009
Fax: 504-733-4393
Toll Free: 800-535-7631
www.lapeyrestair.com
ls.sales@lapeyrestair.com
1
The Lapeyre Stair Advantage
Providing professionals with advantages to meet a range of functional and aesthetic
requirements.
Architects
•Diverse and innovative product line for virtually any access need.
•Downloadable specifications and detailing instructions available on our website
for all stair products.
•Downloadable CAD drawings for Alternating Tread Stairs and standard platforms
available on our website.
•AIA-approved CEU course covering all aspects of stair design.
Fabricators and Contractors
•Complete detailing, engineering, and fabrication services.
•Expedited 1-day quote turnaround for any project size.
Experience the ease of working with long-time stair building professionals.
Call 800-535-7631 or write to ls.sales@lapeyrestair.com to contact a knowledgeable
customer service agent.
Accurate and timely advanced stair building technology since 1981.
www.lapeyrestair.com
2
Lapeyre Stair began manufacturing alternating tread stairs in 1981 and has since
expanded its product line to supply its customers with innovative, customized stair systems.
Services and General Information........................................................................ 4
Determining Stair Model......................................................................................... 6
Alternating Tread Stairs.......................................................................................... 8
Welded Egress Stairs............................................................................................. 13
Bolted Stairs............................................................................................................ 14
Landings and Platforms........................................................................................ 18
Specifications.......................................................................................................... 23
Building Codes........................................................................................................ 27
If you don’t see the stair system you need listed here or on the website,
contact a customer service representative.
The Lapeyre Stair team will customize a solution to meet your needs.
3
SERVICES AND GENERAL
INFORMATION
Services and General Information
Lapeyre Stair friendly and knowledgeable Customer Service Representatives are here to
help you determine which stair model is right for you.
Contact
Email: ls.sales@lapeyrestair.com
Toll-free: 800-535-7631
Phone: 504-733-6009
Fax: 504-733-4393
Lapeyre Stair Assembly Drawings
Assembly instructions are provided for custom-designed alternating tread and bolted stair
applications. Plan drawings are step-by-step connection details with a list of provided
hardware. Please note that anchoring hardware will not be included.
A full set of erection drawings are provided for welded stair projects. Be sure to visit the
website for the following:
• Alternating Tread Stair Instructions
• Bolted Stair Instructions
• Sample Assembly Manuals
• Sample All Welded Erection Drawings
CEU Information
Lapeyre Stair offers the Continuing Education course "Simplified Steel Stair Design for
Commercial and Institutional Buildings." This course will examine how architects and
metal stair fabricators and manufacturers can work together through an integrated design
process in a truly collaborative manner to simplify the design and construction of stair
systems in buildings. It is a one hour free course that will earn 1.0 HSW credits.
•Identify and recognize the overall parameters, general code requirements, and
preliminary design outcomes in a building stair design.
•Determine the specific requirements and options for stair treads, risers, and
landings in building stair systems.
•Differentiate between the specific requirements and options for stair guards and
handrails in commercial and industrial buildings.
•Formulate construction specifications for steel stair systems, working in concert with
recognized standards and specialty fabricators.
Visit the website for further details: www.lapeyrestair.com/info/CEU.aspx
Design Detailing
Lapeyre Stair has an in-house design team that can provide detailed drawings of your
stair system needs.
Engineering Stamps and Calculations
Upon request, Lapeyre Stair can provide three sets of stamped drawings, available for all
50 states.
4
On-time Shipping
Our 99.9% on-time shipping record speaks for itself. This eliminates the need for temporary
site stairs and helps ensure that stairs can be installed efficiently early in the project to
provide access for construction crews.
Touch Up Paint
Stocked spray cans of standard finishes are available for purchase. Call for pricing and
further information for special RAL selected finishes.
5
SERVICES AND GENERAL
INFORMATION
Precision Guarantee
Lapeyre Stair uses CNC manufacturing and proprietary fixtures to guarantee that
our stairs are built to ¹⁄16" of the specified dimensions. Our greater accuracy reduces
misalignment problems during field installation.
Model 01AA
Model 02AA
X
X
X
X
BOCA Industrial
X
X
SBC / Southern Building Code (SBCCI) – Industrial
X
X
X
X
X
IBC Industrial
X
NFPA Industrial
X
X
IBC Commercial
X
X
X
ADA (American with Disabilities Act)
X
X
X
NFPA – Commercial
X
X
X
X
X
Model 04AA
Industrial Egress
X
Model 01AA
Stair Type Available by Stair Model*
X
Model 10AA
X
X
Model 03AA
Cal-OSHA
X
Model 02AA
ANSI – Industrial
Alternating
Tread Stair*
DETERMINING
STAIR MODEL
UBC (Uniform Building Code) – Industrial
Model 04AA
Model 10AA
OSHA
Stair Model Available by Building Code
or Regulation
Model 03AA
Alternating
Tread Stair
Determining Stair Model
X
X
X
X
X
Industrial Equipment Access
X
X
X
X
Industrial Secondary Access
X
X
X
X
Commercial Egress
X
X
X
Accessible Commercial Egress
X
X
X
Commercial Residential Egress (hotels, apartments, etc.)
X
X
X
X
X
Construction Site Stairs (OSHA)
X
Mezzanine/Storage 250 sq feet or less
X
Access to Unoccupied Roof / Roof Hatch
X
X
X
X
X
X
*Use our Alternating Tread Stairs where you would use a steep ladder or steep stair (between 50 - 70 degrees).
Common applications include: Mezzanines, Rooftops, Equipment Access, Conveyors, Crossover Systems.
6
Model 03AA
Model 04AA
X
X
X
Model 02AA
Wall-mounted Handrail
Model 01AA
X
Model 10AA
X
Alternating
Tread Stair
X
Guardrail/Stair Rail (guard also acts as a handrail)
X
X
X
X
*Several combinations of guard rails and handrails are available. Lapeyre Stair customer service
representatives can help you determine what is required based on your code and site condition. An interior
handrail and/or a guard may be required if a wall or other guard is not present.
7
DETERMINING
STAIR MODEL
Guardrail with Interior Handrail
Rail Type Available by Stair Model*
The Alternating Tread Stair
When walking down or up a conventional stair, each foot generally uses only half of each tread,
stepping out and over the unused portion (shaded red).
On a steeper stair or ladder, the unused half tread becomes an obstacle as it significantly reduces
the usable tread depth of the immediate next tread. As the angle increases, the problem worsens.
ALTERNATING TREAD
STAIR
In contrast, the Lapeyre Alternating Tread Stair removes the unused half of each tread, allowing
the foot to reach the next tread in a straight, direct line, providing more usable tread depth.
Imagine walking down (or up) a
conventional stair. Each foot normally
uses only about half of each tread,
stepping out and over the unused
section (shaded red).
Conventional Stair
On a steeper stair or ladder, the
unused half tread becomes an
obstacle, significantly reducing the
usable tread depth of the tread directly
below. As the angle increases, the
problem worsens.
Steep Stair
In contrast, the Lapeyre stair removes
the unused half of each tread, allowing
the foot to reach the next tread in a
straight, direct line, providing more
usable tread depth.
Alternating Tread Stair
8
Alternating Tread Stair
Applications and Industries
Use an Alternating Tread Stair anywhere you would use a ship's ladder, steep stair,
(between 50- 70 degrees) or vertical ladder.
Common Applications
Offshore Vessels
Pits
Roof Hatch Access
Rooftops Storage
Tanks
Storage and Work
Platforms
ALTERNATING TREAD
STAIR
Catwalks
Conveyors
Crossover Systems
Equipment Access
Equipment Vehicles
In-Plant Offices
Machinery
Mezzanines
Alternating Tread Stairs have been installed in nearly
every industry imaginable.
Industry and Business Sectors
Electronic
Education
Federal
Food / Beverage
Glass
Lumber / Paper
Metals
9
Petroleum and Chemical
Pharmaceutical
Public Service
Rubber / Plastics
Transportation
Wastewater Treatment
Alternating Tread Stair
The Lapeyre Alternating Tread Stair features superior product design that provides
unmatched quality and innovations.
•Tread design with greater tread depth than vertical ladders or ship's ladders.
•Cushioned central stringer that eliminates the possibility of hitting the nosing of a tread.
ALTERNATING TREAD
STAIR
OPTIONS
TYPE
CARBON
STEEL
STAIRS
TYPE
ANGLES
HEIGHTS
Handrail
56°
36" to 240"
Standard – 36"-240"
Optional – 55"-240"
Flush – 55"-240"
68°
42" to 240"
Standard – 42"-240"
Optional – 55"-240"
Flush – 55"-240"
ANGLES
HEIGHTS
Handrail
36" to 240"
Standard – 36"-240"
Optional – 55"-240"
Flush – 55"-240"
68°
42" to 240"
Standard – 42"-240"
Optional – 55"-240"
Flush – 55"-240"
TYPE
ANGLES
HEIGHTS
ALUMINUM
STAIRS
68°
24" to 216"
STAINLESS
STEEL
STAIRS
56°
Handrail
Standard – 24"-216"
Optional – 55"-216"
10
FINISHES
Safety Yellow Powder Coat
Gray Primer Powder Coat
Iron Gray Powder Coat
Choice of 180 Powder
Coat Colors
• Hot Dip Galvanized
•
•
•
•
FINISHES
• Natural Finish
FINISHES
• Natural Finish
Alternating Tread Stair Safety Gates
Custom fit safety gates attach to the handrails or platform at the top of the alternating
tread stairs. The dimensions and connections form a perfect fit, enabling the gate to
swing 180 degrees in either direction.
Specifications
Dimensions
Gate Width: 18"
Overall Vertical Height: 30¼"
ounting Bracket: PS DOORS standard, exclusive Universal Pivot
M
Clamp Bracket to fit railings up to 2" OD
Hinge Plate: Mounting holes for reversible swing adjustment
Hinge Springs: Torsion type, stainless steel. Provide two (2) springs
per gate, housed within hinge pivot.
Materials
Carbon Steel
Gate Arm: Formed 1¼" square, 11 gauge steel tubing with center rail
Finishes: On all exposed surfaces. Choose from options below.
• Powder Coat. Fasteners to be zinc plated.
Safety Yellow, Grey Primer, Special Color
• Hot Dip Galvanized. Fasteners to be zinc plated.
Stainless Steel: Grade 304, mill finish, acid washed and rinsed
after fabrication, interfering welds are ground, not polished. Fasteners
to be stainless steel.
Gate Operation
Allows for 180° travel. Gate swing is reversible by repositioning Gate
Hoop on Hinge Plate.
Shipping Weight
Model Number
LSG-3-18-GAL
LSG-3-18-PCY
LSG-3-18-PMD
LSG-3-18-SPEC
LSG-3-18-SST
Finish
Hot Dip Galvanized
Yellow Powder Coat
Gray Primed Powder Coat
Choice of Powder Coat
Stainless Steel
11
ALTERNATING TREAD
STAIR
Connections
Alternating Tread Stair Approved Building Codes
and Approval Letters
The following condensed codes or proposals address the use of alternating tread stairs
in certain applications. The codes themselves and/or local code officials should be
consulted for specific requirements.
U.S. FEDERAL OSHA
INTERNATIONAL BUILDING CODE
ALTERNATING TREAD
STAIR
U.S. COAST GUARD
CANADIAN MINISTRY OF HOUSING
12
Welded Egress Stair
Shipped and ready for installation, Lapeyre Stair’s premanufactured egress stair systems offer a simplistic design
approach with pre-engineered landing, stringer, and
railing components to meet applicable building codes.
These stairs, with in-house detailing and engineering,
reduce the architect’s and engineer’s design and detailing
burden. This approach shortens design time, eliminates
RFIs and late deliveries, and prevents installation errors.
OPTIONS
Rail
Picket Rail
Wire Mesh Panel
Custom Panel
Standard Industrial Rail
Tread
• Concrete Pan
•
Smooth plate or metal pan for various tread types, including:
• Bar Grate
•Wood
• Diamond Plate • Precast Concrete
• Grip Tread
• Non-slip Aggregate
Grip Strut
• Precast Terrazzo
Diamond
Stringer
• Steel Plate
• Steel Channel
Bar Grate
Finish
• Red-oxide Primed
• Hot Dip Galvanized
Plate Stringer with Side Mounted Rail
13
Channel Stringer with Top Mounted Rail
WELDED EGRESS STAIR
Our stairs come with both guardrails and handrails that
Concrete Pan Treads, Channel Stringer,
are designed and manufactured to meet each project's
Vertical Bar Pickets
height, space, code, and clearance. The guardrails are a
minimum of 42" and the handrails are 30"-38", depending on your code and preference.
Bolted Stair
Lapeyre Stair’s unique bolted egress stair systems
allow for easy on-site assembly, eliminating the
need for certified welders. Since the bolted stair
systems are shipped completely unassembled, they
reduce shipping costs and are the simplest and
most cost-effective stair solutions available. They
do not require expensive installation equipment and
they can be assembled within compact spaces.
Lapeyre Stair uses the most progressive in-house
engineering and design computer systems, allowing
customers to quickly receive pricing and project
drawings over the phone.
Stair Model 01AA / 02AA
BOLTED STAIR
•Model 01AA is for stairs up to 12' and the Model 02AA is designed for stairs
12'-20' in height
•Stair type/applications include industrial egress stairs, OSHA fixed stairs,
equipment and mezzanine access stairs, and secondary access stairs
•Stringers constructed from 10' or 12' channel depending on height and angle
•Four tread surface options and several tread widths
•Stair rails constructed of 1½" O.D. tubing with adjustable baluster spacing and
rail height to meet code and requirements
•Variety of finishes to suit numerous facility and environmental needs
Stair Model 01AA is designed around the following building codes. Stair Model 02AA only
complies with OSHA, as it exceeds the maximum stair height of 12' under the building codes.
• OSHA • SBCCI Industrial
•BOCA Dimensions
• UBC Industrial
• NFPA Industrial
•Cal-OSHA
Minimum*
Maximum*
Stair Height
18"
144"
Stair Height OSHA only
18"
240"
Stair Angle up to 10'3"
25°
50°
Stair Angle above 10'4"
29°
50°
Riser Height
4"
10"
30"
43"
3.75"
36"
22"
48"
Stair Rail Height
Baluster Spacing
(Spherical Clearance)
Tread Width
(Inside Stair Width)
* Varies by Building Code. Your minimum/maximum requirements may vary. Check local building codes.
14
Stair Model 03AA / 04AA
Stair Models 03AA and 04AA meet the
requirements of IBC's industrial stair, as
well as most commercial metal stair and
primary egress needs. These models
are best suited for renovations where
installation space is limited, in exterior
applications, free-standing towers, and for
self-installations where certified welders
are not available.
•
Stair type/applications include
commercial egress stairs, industrial
secondary access stairs, closed
risers, accessible commercial egress stairs, and commercial residential egress stairs
•Stringers constructed from 12" channel
•Three tread surface options and two standard tread widths with custom widths
available
•Guardrails, handrails and balusters constructed of 1½" O.D. tubing. The guardrail
height is fixed at 42" and the handrail length is adjustable within the range
allowed by code.
•Variety of finishes to match the facility and environmental needs
Dimensions
Minimum*
Maximum*
Stair Height
18"
144"
Stair Angle up to 10'3"
25°
50°
Riser Height
5"
7"
10"
11.5"
Top Landing Depth
4"
4"
Top Reveal
1"
1.5"
0.25"
1.5"
Guardrail Height
42"
42"
Handrail Height
30"
38"
3.75"
21"
36"
60"
Projected Tread Depth
(Tread Run)
Front Reveal
Baluster Spacing
(Spherical Clearance)
Tread Width
(Inside Stair Width)
* Varies by Building Code. Your minimum/maximum requirements may vary. Check local building codes.
.
15
BOLTED STAIR
Both Stair Models 03AA and 04AA are designed around the following building codes.
•
IBC / International Building Code
•
ADA / American Disabilities Act
•
NFPA / Life Safety Code
OPTIONS
BOLTED STAIR
Bolted Stair Guardrail
•Guardrails come standard on both sides of the stair unless otherwise specified.
•Guardrails may be eliminated on stairs placed against a wall. Stairs without
guardrails will feature a narrower stringer.
•Guardrails extend 42" above the tread nosing and end at the top and bottom of
the stair. Handrails are available between 30" and 38" above tread nosing.
•Commercial stairs have balusters spaced as such that nothing larger than a 4"
sphere can pass between them.
•Stairs ordered under the IBC Industrial Code have balusters spaced so that nothing
larger than a 21" sphere can pass between them.
•Filler panels can be custom painted with a finish to either match the stairs or a
different color.
•Guardrails designed to withstand a 200 lb load applied in any direction.
Model 01/02
OSHA
Model 03/04 IBC
Commercial
Model 03/04 IBC
Commercial Filler Panel
Model 03/04 IBC Industrial
Handrail End Terminations – Bottom
Extended Box to
Box to Guard
Guard Handrail
Handrail
Extended Wall
Mounted Handrail
Wall Mounted
Handrail
Handrail End Terminations – Top
Wall Mounted Handrail
Guardrail Mounted Handrail
16
Model 01/02 Tread
Open
Diamond
Treadplate
Open
Grip
Tread
Open
Concrete
Pan
Open
Bar
Grating
24", 30", 36", 48"
X
X
X
X
Custom Widths,
up to 48"
X
tread type
Available Widths
X
Available Depths
X
9½"
9¾"
X
X
X
1015⁄16"
X
X
X
X
X
117⁄8"
12¹⁄8"
X
X
Model 03/04 Tread
Smooth
Treadplate
Concrete
Pan
36"-48"
X
X
X
Custom Widths
X
X
X
Available Widths
Grip Strut
Diamond
Bar Grate
Smooth tread has the same features as the diamond tread with the exception of the raised
diamond surface. The smooth surface is designed to allow you to adhere your own
surface material (carpeting, non-slip flooring surface, or other flooring material) directly to
the stair. Custom width requests may be accommodated.
Assembly
Stairs ship as kits for easy field installation. All assembly hardware is provided.
Back-pan
Optional. Most open-riser stairs are equipped with cross bracing connecting the two
stringers behind the treads. You may chose to replace the standard cross bracing with a
set of catch-pans that will prevent any object or dirt from falling to the ground below.
17
BOLTED STAIR
Diamond
Treadplate
TREAD TYPE
Platform Systems
Lapeyre Stair offers a variety of platforms, metal stairs, legs, and supports designed
to work together. Platform design varies depending upon the stair application, the
size, or material requirements. Once Lapeyre Stair designers receive your requirement
specifications, they create a CAD model and provide layout drawings included in the cost
of the stair.
Formed Single Piece Platforms
Used for Alternating Tread and Model 01AA / 02AA stairs for industrial applications.
Cannot be used with Models 03AA / 04AA.
Drop-in Panel Platforms
LANDINGS AND
PLATFORMS
Designed to be used with commercial stairs, this platform design may be used with most
of the stair designs. This allows for greater flexibility of size and layout configurations.
In-plant Office System with Drop-in Panel Platforms
Equipment Access System with Formed Platform
18
Formed Platform Systems
Compatible with the Alternating Tread Stair and the Model 01AA/02AA stairs, this
platform is a single piece of metal, cut and formed to create the walking surface, the kick
plates, and the mounting plates for the stairs. Handrails bolt from underneath the plate.
This platform is ideal for crossover systems, intermediate landings, exit landings, and
equipment access platforms.
OPTIONS
MATERIAL
CARBON STEEL
FINISH
•
•
•
•
•
Safety Yellow Powder Coat
Gray Primer Powder Coat
Iron Gray Powder Coat
Choice of 180 Powder Coat Colors
Hot Dip Galvanized
STAINLESS STEEL
• Natural Finish
ALUMINUM
• Natural Finish
Angles
•
The handrails are bent so that the rail of the platform conforms to the rail of the
stair. For this reason, we will ask the angle of the stair, if the platform is to be used
with an alternating tread stair.
Landings
•
24"
•
30"
•
30"
•
30"
•
38"
and Platforms
x 38" Intermediate Landing
x 38" 90° Right/Left Turn Intermediate
x 60" 180° Right/Left Turn Switchback Intermediate
x 30" Right/Left Turn or Forward Exit Landing
x 38" Right/Left Turn or Forward Exit Landing
Work Platforms
•
24" x 36" Work Platform
Custom Sizes Available Upon Request
Typically, the limits are 54" wide and 144" long,
but our designers can work on a modified design
or sections that bolt together to create larger
platforms. Another option for larger platforms is
our drop-in panel platform.
19
LANDINGS AND
PLATFORMS
Crossovers
•
Standard sizes are 24" x 24" to 24" x 120" in increments of 6"
Drop-in Panel Platform Systems
LANDINGS AND
PLATFORMS
Compatible with all of our bolted stairs and alternating tread stairs, this platform design
can best be described in a single word as flexible. It is ideal for commercial egress stair
applications, but just as well suited for the industrial stair and steel alternating tread stair.
Without the size limitations of the single formed platforms, this is the model our designers
go to when designing many of the more complicated stair systems. The drop-in panel
platform is the only platform that will work with our Model 03AA and 04AA stair models.
Some Possible Uses
•
Exit Landings
•
Intermediate Landings
•
Switchback Landings
•
Work Platforms
•
Crossover Systems (see special note about clearance, below)*
OPTIONS
MATERIAL
CARBON
STEEL
FINISH
•
•
•
•
DROP-IN PANEL
Safety Yellow Powder Coat
Gray Primer Powder Coat
Iron Gray Powder Coat
hoice of 180 Powder Coat Colors
C
• Hot Dip Galvanized
20
• ¼" Diamond Treadplate
• Bar Grating
• Grip Tread Material, similar to our Grip
Treads on the Model 01AA/02AA stairs.
• Concrete Pan – ready for site-poured
concrete. Constructed of 11 ga
(0.120) Diamond Plate
• Smooth Plate – 11 ga (0.120) plate
that you can apply your material (turf/
carpeting/etc.) to using adhesive.
Lapeyre Stair does not provide the
surface material or adhesive.
Design Features
•Z-channel framing, utilizing the same design as the stringers on our Model 01AA
– 04AA stairs. The balusters of the guardrail slide through the frame and attach
using provided spacers and bolts just as they do on the stairs.
•There are very few size limitations. The modular design and drop-in sections allow
for much larger platforms than our single piece formed platforms.
•Panels can drop in either parallel or perpendicular with the framing, and attach to
3" C-Channel supports.
•Continuous handrails from stair to platform are available.
•Available with either balustered or filler panel guardrails.
*Note on using this platform design for Crossover Systems
The framing on this platform is 8" high, the stair mounts to the top of the 8". Therefore,
in calculating the stair height for a crossover, you will need to add 8" to provide the
clearance you will need under the crossover system.
21
LANDINGS AND
PLATFORMS
Guardrail Baluster to Platform Connection
Leg Supports
Our legs and platform supports are pre-engineered, yet we offer a great deal of flexibility.
Our computerized system calculates the required leg size for your stair and platform
configuration, and for non-standard designs, our design team works with the customer
service representative to determine the best scenario for your application.
OPTIONS
Materials and Finishes
•
Carbon Steel
•
Stainless Steel
•
Aluminum
Finishes
•
Safety Yellow Powder Coat
•
Iron Gray Powder Coat
•
Gray Primer Powder Coat
•
Hot Dip Galvanized
•
Choice of 180 colors Powder Coat
LANDINGS AND
PLATFORMS
Design Features
Legs are constructed out of either 3" or 4" square tubing, depending on the strength
requirements of your stair height and platform size. Most units are designed for four legs,
but our engineers will review conditions where fewer or more legs are required. For
taller applications, bracing is added to the legs for additional strength, with the need for
this determined both by our computer system and our design team.
Connections
The legs typically connect at the ³⁄8" thick base plate at the bottom using 4 bolts, and at the
top ¼" base plate to the under side of the platform using 3 bolts. For multi-level stair systems
and towers, the legs can run on the outside of the platform and attach from the side.
³⁄8" Base Plate
¼" Base Plate to Platform
22
Side Mounted Leg
Bracing Kit for Crossover Systems
Lapeyre Stair has always recommended sway bracing to maximize the stability of our
Crossover Systems. Designed for Crossover Systems with stairs up to 8' tall and platforms
up to 8' long, our convenient Crossover Bracing Kit includes:
Brackets: Stainless Steel upper and lower connections, plus hardware
Custom Brace Tubing: Available in carbon steel, stainless steel, and aluminum. Tubing
length will vary according to your Crossover configuration.
Critical Dimensions
Once fabricated, the bracing only allows for approximately 1" of adjustment during
installation to account for minor inaccuracies in floor anchor drilling. To determine the
correct brace specifications for your Crossover System, the following information is
required when you place your order.
•
Basic dimensions of obstacles under and near the Crossover System.
•
Optimal Spread Angle: Spread angle range is 0 to 20 degrees for 56-degree
angle stairs and 0 to 10 degrees for 68 degree angle stairs.
•
Optimal Brace Angle: Brace angle range is 20 to 30 degrees (from vertical
plane) for all configurations.
LANDINGS AND
PLATFORMS
Our customer service representatives can help you determine your optimal brace and
spread angles based on Crossover stair height, platform length, and obstacle dimensions.
Price and Weight
Material/Finish
Carbon Steel Painted
Carbon Steel Galvanized
Stainless Steel
Aluminum
Shipping Weight
55 lbs
55 lbs
55 lbs
50 lbs
23
Alternating Tread Stair
Technical and Dimensional Data
SPECIFICATIONS
Dimensional/
Technical Data
56° Steel
68° Steel
68° Aluminum
Minimum Height,
Floor to Floor
36" (91.44 cm)
42" (106.68 cm)
24" (60.96 cm)
Maximum Height,
Floor to Floor **
240" (609.60 cm)
240" (609.60cm)
216" (548.64 cm)
Overall Height,
(Standard
Handrails)
H + 42"
(H + 106.68 cm)
H + 42"
(H + 106.68 cm)
H + 42"
(H + 106.68 cm)
Overall Height,
(Optional Handrail)
H + 5¾"
(H + 14.61 cm)
H + 5¾"
(H + 14.61 cm)
H + 3¾"
(H + 9.53 cm)
Overall Width
23" (58.42 cm)
23" (58.42 cm)
23" (58.42 cm)
Run (within +/1" [25.4 cm])
0.675 (H-6.42") + 9.5"
0.675(H-16.301 cm) +
24.13 cm
0.404 (H-7.517") + 9.5"
0.404 (H-19.093 cm) +
24.13 cm
0.404 (H-7.175") + 9.5"
0.404 (H-18.225 cm) +
24.13 cm
Recommended
Minimum Floor
Opening, Width
35" (88.90 cm)
35" (88.90 cm)
35" (88.90 cm)
Recommended
Minimum Floor
Opening, Length
70" (177.8 cm) + ²⁄3
Floor Thickness
62" (157.48 cm) + ²⁄5
Floor Thickness
62" (157.48 cm) + ²⁄5
Floor Thickness
Minimum Riser
Height
6.417" (16.299 cm)
7.517" (19.093 cm)
7.175" (18.225 cm)
Maximum Riser
Height
7.500" (19.558 cm)
9.020" (22.911 cm)
9.566" (24.298 cm)
Approximate Net
Weight
1.428(H) + 32 lbs
(H <120")
1.688(H) + 32 lbs
(H >120")
1.332(H) + 21 lbs
(H <144")
1.488(H) + 31 lbs
(H >144")
.690 (H) + 20 lbs
0.255(H) + 14.52 kg
(H <3.05m)
0.301(H) + 15.42 kg
(H >3.05m)
0.238(H) + 9.53 kg
(H <3.66m)
0.266(H) + 14.06 kg
(H >3.66m)
0.1232 (H) + 9.07 kg
H = height from upper finished floor to lower finished floor in inches (centimeters). The above formulas are for estimating purposes and are subject to
change without notice. For more complete data, call for a complimentary dimensional print.
**To reduce vibration, stairs in excess of 15' (4.57 m) may require customer supplied sway bracing. For vertical heights in excess of 15' (4.57 m),
Lapeyre Stair, Inc. recommends an intermediate platform with two stairs of equal height. (Customer supplied bracing required.)
CSI format specifications available for download on the website.
24
Alternating Tread Stair
Material Specifications
Stair Part
Carbon Steel
Stainless Steel
Aluminum
Landings and
Foot Stampings/
Castings
11 Gauge AISI
1010/15 per ASTM
A569 / A1011 grade
36 (or higher)
11 Gauge AISI 304 SS
Treads
13 Gauge AISI
1010/15 HRPO per
ASTM A569 / A1011
grade 36 (or higher)
13 Gauge AISI 304 SS
Guards/
Handrails
1½" OD x 0.095"
AISI 1010/15 CS
per ASTM A569/
A1011 cold drawn,
fully annealed tube
per ASTM A513
grade 1008 or higher
As-welded tubing or
ASTM A500 Grade B
1½" OD x 0.065"
304 SS cold drawn,
fully annealed tube per
ASTM A269 seamless
or ASTM A554 welded
Aluminum Alloy
6063-T4
2" x 1¾" x 11
Gauge U section; AISI
1010/15 per ASTM
A569/A1011 grade
36 (or higher) for 56
degree stairs under 10
vertical feet and for 68
degree stairs under 12
vertical feet.
2" x 1¾" x 11 Gauge
U section; AISI 304
SS for 56 degree stairs
under 10 vertical feet
and for 68 degree
stairs under 12 vertical
feet.
Aluminum Alloy
6063-T52
Stringers
Fasteners
Miscellaneous
1½" x ¹⁄8" Tube
1¾" x 4" x ¹⁄8" Box
Shape
3" x 1¾" x 11 Gauge
U section; AISI 304
SS 56 degree for stairs
over 10 vertical feet
and for 68 degree stairs
over 12 vertical feet.
Bolts: Handrail to
stringer; Hex Head
SAE J429 Grade 5,
½" x 13 TPI Landing
to structure; Carriage
Head A307 or Hex
Head SAE J429 Grade
5, ½" x 13 TPI
Bolts: Handrail to
stringer; Hex Head
SAE J429 Grade 5,
½" x 13 TPI Landing
to structure; Carriage
Head A307 or Hex
Head SAE J429 Grade
5, ½" x 13 TPI
Nuts: ASTM A563
Grade 0
Nuts: ASTM A563
Grade 0
Washers: ASTM F844
Washers: ASTM F844
ubber Spine: Hollow
R
Neoprene Strip
ubber Spine: Hollow
R
Neoprene Strip
Rubber Foot Divider:
Solid Neoprene
Rubber Foot Divider:
Solid Neoprene
25
SPECIFICATIONS
3" x 1¾" x 11
Gauge U section; AISI
1010/15 per ASTM
A569/A1011 grade
36 or higher for 56
degree stairs over 10
vertical feet and for 68
degree stairs over 12
vertical feet.
Aluminum Alloy F356F
ubber Spine: Hollow
R
Neoprene Strip
Horizontal Projections for Every 6" Height
This table shows the amount of floor space used for each stair. Lapeyre Stair, Inc.
recommends the 56° stair, providing floor space is available.
SPECIFICATIONS
VERTICAL RISE
HORIZONTAL RUN
IN
FEET
IN
INCHES
56 DEGREE
STEEL
68 DEGREE
STEEL
68 DEGREE
ALUMINUM
2.0
24
N/A
N/A
15.96
2.5
30
N/A
N/A
18.59
3.0
36
28.93
N/A
20.41
3.5
42
33.11
23.08
23.08
4.0
48
37.25
25.66
25.66
4.5
54
41.37
28.20
28.20
5.0
60
44.91
30.28
30.71
5.5
66
49.07
32.83
33.20
6.0
72
53.21
35.36
35.36
6.5
78
57.33
37.86
37.86
7.0
84
61.44
40.04
40.35
7.5
90
65.15
42.56
42.56
8.0
96
69.27
45.05
45.05
8.5
102
73.39
47.28
47.54
9.0
108
77.49
49.78
50.02
9.5
114
81.59
52.27
52.27
10.0
120
85.38
54.75
54.75
10.5
126
89.49
57.01
57.23
11.0
132
93.59
59.50
59.69
11.5
138
97.68
61.98
61.98
12.0
144
101.77
64.45
64.45
12.5
150
105.62
66.74
66.91
13.0
156
109.71
69.21
69.38
13.5
162
113.80
71.68
71.68
14.0
168
117.89
73.98
74.14
14.5
174
121.97
76.45
76.61
15.0
180
125.85
78.92
78.92
15.5
186
129.94
81.38
81.38
16.0
192
134.02
83.70
83.30
16.5
198
138.11
86.16
86.30
17.0
204
142.19
88.62
88.62
17.5
210
146.09
91.08
91.08
18.0
216
150.17
93.41
93.54
18.5
222
154.25
95.87
N/A
19.0
228
158.33
98.33
N/A
19.5
234
162.40
100.78
N/A
20.0
240
166.32
103.12
N/A
*56° angle recommended for comfort
26
Building Code Policy
As Lapeyre Stair expands its product line to provide you with more options to meet
your access requirements, we are striving to incorporate into our engineering design
the flexibility and interchangeability of components needed to selectively meet the
requirements of the various laws, standards, and building codes in operation in all parts
of the world.
We also strive to provide you with real value in your access device purchase. To achieve
that goal, we will endeavor to provide you with design alternatives that meet your local
requirements. Because of the infinite complexity of knowledge required to understand
the diverse requirements of all local political and geographic regions, we have decided
to offer products that, in general, can be selectively configured to meet the requirements
of several of the primary United States, and international laws, standards, and building
codes as described in their current or most recently issued editions.
And although we cannot guarantee that a particular stair configuration will be accepted
by your local authorities, we stand at the ready to quickly provide you with detailed
drawings of our access devices, prior to your purchase, that you may submit for
compliance approval.
Your local architect, local building code officials, and your local codes are your best
source of compliance specifications/recommendations at your location.
All capacity ratings for Lapeyre Stair conventional tread stairs are stated in terms of the
live load capacity of the stair system with a given safety factor. Local wind, snow, and
seismic rating requirements are not included in this capacity rating. Local requirements
for these loadings, where applicable, must be considered by your local architectural or
engineering professional.
BUILDING CODES
27
L
apeyre Stair began
manufacturing alternating
tread stairs in 1981 and has
since expanded its product
line to supply customers with
customized stair systems that
meet their specific needs.
Today, we design and
fabricate:
• Alternating Tread Stairs
tair Systems – industrial
•S
and commercial metal stairs
•W
ork Platforms for aerial
access to equipment
•A
ccessories – including
suppport legs for platform
systems, and safety gates
Lapeyre Stair, Inc.
New Orleans, LA 70150
Telephone: 504-733-6009
Toll Free: 800-535-7631
FAX: 504-733-4393
www.lapeyrestair.com
ls.sales@lapeyrestair.com
TM
© 2013 Lapeyre Stair, Inc. 52463_ENGLISH