14.1 FLIP Anchors

User Manual: 14.1 FLIP

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MAINTENANCE EQUIPMENT
window washing systems

11010
1
03
Pro-Bel Enterprises
Limited

SAFETY &
TIE-BACK
ANCHORS

Window Cleaning/
Suspended Maintenance
Equipment & Fall
Protection Systems

1-800-461-0575
w w w . p r o-b e l . c a i n f o @ p r o-b e l . c a

THE SAFETY ROOF ANCHOR EXPERTS

SAFETY & TIE-BACK ANCHORS

EXPLANATION
A fundamental concept in the use of
maintenance contractor supplied conventional suspended access equipment such
as bosun’s chair, single work cage or
platform is that there must be two independent means of support for each
worker using the equipment.
The first means of support is the access
equipment itself tied back to an anchor.
The second is usually provided by a separate fall arrest system consisting of a:
• full body harness;
• lanyard (with shock absorber);
• mechanical rope grabbing device;
• lifeline;
• lifeline anchor.
In addition, anchors, which are used for
tie-backs or for securing lifelines, are also
an effective, practical means for directly
securing a bosun’s chair with descent
control equipment, the most popular
method of window cleaning today (direct
rigging).

All Buildings Require Roof Anchors
Extract From ANSI/IWCA I-14.1
Window Cleaning Safety Standard:
4.1.1 All buildings where window cleaning is performed that employ suspended
equipment shall be equipped with roof
anchorages or other approved devices
which will provide for the safe use of the
equipment in conformance with the provisions of this Standard.

Bosun’s chair is the equipment of choice
among window cleaners. Pro-Bel safety
anchors (see photo at right) are used to
secure chair and separate lifeline.

The chair is rigged directly to an anchor in
line with the point of suspension. A separate independent anchor on the roof is
required to secure the worker’s fall arrest
lifeline.

Pro-Bel safety anchors may be used for
securing lifeline, for tie-back of primary
rigging equipment or to directly rig a
bosun’s chair.

PRO-BEL
WALL ANCHORS
TIE-BACK
SAFETY ANCHOR
FOR SERVICING
VIDEO CAMERA

LIFELINE

TIE-BACK

OUTRIGGER BEAM WITH
COUNTERWEIGHTS
PRO-BEL ROOF
ANCHORS

PRO-BEL ROOF
ANCHORS

LIFELINE

PRIMARY
SUSPENSION
LINE

SUSPENSION
LINE

PARAPET
WALL
PRIMARY
CLAMP
SUSPENSION
LINE

CARPET
STRIP

BOSUN’S
CHAIR

PRIMARY
SUSPENSION
LINE

LIFELINES

BOSUN’S
CHAIR

SINGLE
WORK
CAGE

POWERED
PLATFORM

Typical rigging and fall arrest requirement scenarios using Pro-Bel safety lifeline and tie-back anchors.

A-2

DESCRIPTION
Note: Pro-Bel tie-back/lifeline anchors
and direct rigging anchors are the same
and are used interchangeably.
Safety Anchor Types
There are literally dozens of Pro-Bel
safety anchor products available. Each
has been engineered to satisfy a particular job requirement. They can be categorized as follows:
PB and PBE Series Wall Anchors

PB wall anchors are fabricated using a
patented stainless steel U-bar which is
detachable for ease of replacement, concrete forming and waterproofing. PBE
anchors are a more economical alternative to PB anchors and are used when
flashing or waterproofing is not a consideration.

Pro-Bel PB type wall anchor in concrete
wall of rooftop mechanical room.

Pro-Bel wall anchor recessed in box flashing (PB71S).

Pro-Bel PB type steel pier roof anchor with
detachable cap and aluminum flashing.

Pro-Bel PBE type roof anchor with aluminum flashing and heat-shrink rubber
collar flashing.

PBE Series Roof Anchors

PBE Series anchors have a non-detachable stainless steel U-bar and are flashed
using a spun aluminum flashing sealed at
the top with a heat-shrink rubber collar
flashing.
PB Series Roof Anchors

PB Series anchors, somewhat more
expensive than PBE Series anchors, are
fabricated using a patented stainless
steel U-bar and stainless steel cap flashing which is detachable for ease of
replacement.
USE
ANSI/IWCA I-14.1 (3.9 Anchorages)
states that “Building owners and window
cleaning contractors shall not allow suspended work to be performed unless it
has determinded that the building has
provided, identified and certified anchorages complying with Section 9 or 10 for:
independent safety lines; tie-backs for
outriggers, parapet clamps and cornice
hooks; primary support anchorages for
powered and manual boatswain’s chairs;
primary support anchorages for rope
descent systems; horizontal (rope) lines
or lifelines; and wherever else required.”

Pro-Bel roof anchor set into concrete pier
(PB70).

Pro-Bel “flip-up” terrace anchor concealed with cut out core trimmed with
stainless steel band and tabs.

A-3

S A F E T Y & T I E - B A C K A N C H O R S Fall Protection Systems (continued)

Note Re: Alternative Finish to Galvanizing. For all anchor bases and supports, Pro-Bel offer a superior protective coating _ Protex _ in
lieu of galvanizing if desired. Pro-Bel Protex is a 3/32” (2.4 mm) thickness, black colored, two component spray on, flexible 100% solids thermoplastic (TPU) polyurethane/polyurea system. Protex provides exceptional impact and abrasion resistance and is factory applied via high
pressure impingement mix polyurethane dispensing equipment. See Pro-Bel Protex Technical Data Sheet # R-2 for complete information.

FEATURES
All corrosion resistant materials;
anchor components are stainless steel
and/or hot dipped galvanized steel.
Standards conformance; all anchors
comply with OSHA and ASME/ANSI/
IWCA safety requirements for window
cleaning, and various materials standards.
Installation flexibility; Pro-Bel safety
anchors are suited to a broad range of
building structures, including concrete,
structural steel or precast panels.
Securement methods include cast-inplace, through bolts, bolt around, welding, or chemical epoxy fastening.
Engineer certified; OSHA and ANSI/
IWCA I-14.1 requires that safety anchoring devices be designed by or under the
direction of a registered professional
engineer experienced in such design.
Pro-Bel safety anchors meet this criteria
and anchor performance is based on
data derived from testing and/or engineering calculations. Anchors have been
tested to ensure fracture or detachment
does not occur with the application of a
5,000 lb (22.2 kN) load in any direction.

Minimum anchors; OSHA and ANSI/
IWCA I-14.1 requires that equipment tiebacks be “installed at right angles to the
face of the building whenever possible”.
This requirement, can result in an
unnecessary number of installed
anchors. Pro-Bel has developed anchor
placement chart data to help designers
locate anchors to suit tie-back and lifeline requirements. This data ensures
compliance with OSHA fall protection
criteria while reducing the number of
anchors (and roof penetrations) required.
Specific liability insurance; all Pro-Bel
davit installations automatically carry
$2,000,000.00 coverage against product/
system failure (over 4000 projects successfully completed to date).

MATERIALS/FABRICATION
(as applicable)
U-bar, anchor bolts, detachable caps:
Type 304 stainless steel with yield
strength of 42 Ksi (290 MPa) or mild steel
to ASTM A36, Type 350W with yield
strength of 43 Ksi (297 MPa), hot dipped
galvanized to ASTM A123/A 123M-2000.
Hollow steel section (HSS) piers: galvanized mild steel as above with yield
strength of 50 Ksi (345 MPa), with or
without urethane foam insulation.
Plate and all other sections: galvanized mild steel as above with yield
strength of 43 Ksi (297 MPa).
Seamless spun aluminum flashing (for
steel pier anchors): Type 6061-T6 alloy
to ASTM B221-2000 with deck flange
flashed in using felt plies to NRCA or
CRCA recommendations or roofing
membrane manufacturer’s instructions,
as applicable.
Top of anchor sealing (for steel pier
anchors): torch applied heat-shrink rubber collar flashing or detachable U-bar
complete with stainless steel watertight
cap.

Compatible with roofing; Due to stringent OSHA anchor placement requirements i.e. in line with the point of suspension and free fall distance, anchors,
for the most part, must necessarily be
placed on the roof. An important consideration in the design of Pro-Bel anchor
products is the need to maintain the long
term watertight integrity of the building.
Pro-Bel products are designed with a full
understanding of reliable flashing/sealing
techniques to satisfy any roof condition.

Bolts, nuts and washers: Type 304
stainless steel or galvanized steel to
ASTM A325.
Note: Illustrated on the next few pages
are only some of the many model variations of anchor products available.
Anchors can be engineered to satisfy virtually any access requirement.

Where anchors are located in waterproofed areas of a roof, a pier is normally provided to elevate the anchor above
the waterproofing. In the case of metal
pier anchors, the pier is supplied with the
anchor and a prefabricated flashing to
suit roof type as required. With concrete
pier anchors, the pier must be formed,
the anchor cast in, and the flashing fabricated at the job site.
Sole responsibility; Pro-Bel provides
complete fall protection products/systems from concept to the supply and
installation of same, including annual
inspection.

A-4

Worker above uses Pro-Bel “Hands-Free”
horizontal lifeline cable to safely access
recessed windows as well as custom
ledge-mounted Pro-Bel safety anchors
(one for bosun’s chair and one for lifeline)
for” drops” below.

Pro-Bel wall anchor bolted to steel beam
supporting rooftop AC chiller unit.

Window cleaners preparing to launch a contractor supplied platform over a parapet wall using Pro-Bel davits with rotating heads. Steel
cables are used to suspend the platform while workers are tethered to independent Pro-Bel roof anchors with rope lifelines.

Terrace application shows how a series of Pro-Bel stainless steel “flip-up”
anchors can be completely concealed with pavers when not in use.
Anchors are arranged to suit both bosun’s chair and suspended platform
applications.

Series of Pro-Bel wall anchors bolted to structural concrete parapet, used to secure a bosun’s chair suspension
line and workers’ lifeline (interchangable).

A-5

S A F E T Y & T I E - B A C K A N C H O R S Fall Protection Systems (continued)

TESTING*
Testing of Pro-Bel wall and roof anchors
involve a variety of both shop and on-site
test methods including static, dynamic and
destructive procedures. All testing is carried out by independent testing agencies
or under the direction of a professional
engineer in accordance with recognized
standards.

Anchors secured using epoxy adhesive
are tested to 5000 lbs (22.2 kN) to ensure
against failure. The photos on this page
provide an overview of Pro-Bel test procedures.

* Test data available upon request.

The static load test in the above photo, which applies force using a heavy duty cable
come-along, was conducted to show that Pro-Bel wall and roof anchors comply with standards that require the anchors be capable of resisting without fracture and/or pull-out a
force of 5000 lbs (22.2 kN). A similar test is performed on-site to verify strength of epoxy
adhesive roof anchors.

Pro-Bel wall anchors secured to structural concrete using epoxy adhesive are load tested
on-site using a hydraulic pull tester to verify strength and anchor bolt integrity.

A-6

Photo shows 8’-0” (2440 mm) high apparatus
used for shock (drop) testing of Pro-Bel safety U-Bar anchors. A 220 lb. (100 kg) weight
was connected to the anchor using a steel
test lanyard and dropped a distance of 4’- 0”
(1220 mm). A series of anchors employing
different securements were tested and peak
forces up to 18,522 lbs (8400 kg) were generated without fracture to any part of the
anchors.

A series of Pro-Bel safety U-Bar anchors
were tested to determine their ultimate
strength (destructive testing). The force
used to break the test specimens was provided by a hydraulic system, a hooking
mechanism, and support structure. The
highest pressure recorded just before a
specimen was broken in this series of tests
measured 32,445 lbs (4500 psi * 7.210 in2).

WALL ANCHOR SECUREMENTS
THROUGH-BOLT

CAST-IN-PLACE

EPOXY ADHESIVE BOLTS

4
2

3
Anchors are
designed to a maximum fall arresting
force of typically
1800 lbs (8.0 kN)
when wearing a
body harness with a
safety factor of 2
without any permanent deformation
and to 5000 lbs
(22.24 kN) against
fracture or detachment.

2
1
Anchors are
designed to a maximum fall arresting
force of typically
1800 lbs (8.0 kN)
when wearing a
body harness with a
safety factor of 2
without any permanent deformation
and to 5000 lbs
(22.24 kN) against
fracture or detachment.

1
2

Anchors are
designed to a maximum fall arresting
force of typically
1800 lbs (8.0 kN)
when wearing a
body harness with a
safety factor of 2
without any permanent deformation
and to 5000 lbs
(22.24 kN) against
fracture or detachment.

6” (150 mm) MIN

6” (150 mm) MIN
6” (150 mm) MIN

PRO-BEL MODEL # PB69S:

STAINLESS STEEL U-BAR SAFETY ANCHOR;
STAINLESS STEEL OR GALVANIZED BOLT;
HEAVY DUTY HEX NUT & LOCK WASHER;
GALVANIZED STEEL BACK PLATE.

1.
2.
3.
4.
5.

STAINLESS STEEL U-BAR SAFETY ANCHOR;
S.S. LOCK WASHER AND NUT
STAINLESS STEEL CAST- IN- PLACE ROD;
FORMING NUT.
GALVANIZED STEEL BACK PLATE.

REINFORCED WALL ANCHOR WITH EPOXY ADHESIVE BOLT SECUREMENT AT FLOOR

Anchors are
designed to a maximum fall arresting
force of typically
1800 lbs (8.0 kN)
when wearing a
body harness with
a safety factor of 2
without any permanent deformation
and to 5000 lbs
(22.24 kN) against
fracture or detachment.

2
1

BACK PLATE

PRO-BEL MODEL # PB48S:
1. STAINLESS STEEL U-BAR SAFETY ANCHOR;
2. LOCK WASHER AND NUT;
3. EXPOXY ADHESIVE ANCHOR BOLTS

RECESSED, CAST-IN-PLACE

6” (150 mm) MIN

3
4

4”
(100 mm)

3
5

7-1/2” (190 mm)

PRO-BEL MODEL # PB71S:
1.
2.
3.
4.

6” (150 mm) MIN

PRO-BEL MODEL # PB93S-A
1. STAINLESS STEEL U-BAR SAFETY ANCHOR; 2. S.S. OR GALVANIZED BOLT, EXPOSED
THREADS TO BE DEFORMED AFTER INSTALLATION; 3. STEEL REINFORCING c/w STEEL BASE
PLATE TO SUIT; 4. HEAVY DUTY HEX NUT & LOCK WASHER; 5. EPOXY ADHESIVE ANCHOR
BOLTS.

PRO-BEL MODEL # PBE68:
1. REINFORCING ROD TIES BY OTHERS;
2. STAINLESS STEEL RECESSED BOX TYPE
SAFETY ANCHOR;
3. S.S. FORM NAILING FLANGE

A-7

S A F E T Y & T I E - B A C K A N C H O R S Fall Protection Systems (continued)

ROOF ANCHOR SECUREMENTS
THROUGH-BOLT

3
2

4
3

2
8” (200 mm) MIN.

8” (200 mm) MIN.

EPOXY ADHESIVE BOLT

CAST-IN-PLACE
Anchors are
designed to a maximum fall arresting
force of typically
1800 lbs (8.0 kN)
when wearing a
body harness with a
safety factor of 2
without any permanent deformation
and to 5000 lbs
(22.24 kN) against
fracture or detachment.

5
5”

PRO-BEL MODEL # PBE74-00A4-S:

PRO-BEL MODEL # PB73-SDC1:
1. STAINLESS STEEL U-BAR SAFETY ANCHOR
c/w S.S. BOLT & DETACHABLE S.S. CAP;
2. SEAMLESS SPUN ALUMINUM FASHING;
3. GALVANIZED STEEL PIER;
4. STAINLESS STEEL HEAVY DUTY HEX NUT &
LOCK WASHER;
5. GALVANIZED STEEL BACK PLATE;
6. TAMPERPROOF PIN

1.
2.
3.
4.
5.

STAINLESS STEEL U-BAR SAFETY ANCHOR
GALVANIZED STEEL PIER c/w BASE PLATE;
SEAMLESS SPUN ALUMINUM FLASHING;
HEAT-SHRINK RUBBER COLLAR FLASHING;
STAINLESS STEEL BOLTS c/w PLATES
WELDED TO BOLTS.

WELDMENT

1
4
2
3

WRAPPING CONCRETE JOIST
Anchors are
designed to a maximum fall arresting
force of typically
1800 lbs (8.0 kN)
when wearing a
body harness with a
safety factor of 2
without any permanent deformation
and to 5000 lbs
(22.24 kN) against
fracture or detachment.

2
8” (200 mm) MIN.

8” (200 mm) MIN.

STAINLESS STEEL U-BAR SAFETY ANCHOR;
GALVANIZED STEEL PIER c/w BASE PLATE;
SEAMLESS SPUN ALUMINUM FLASHING;
HEAT-SHRINK RUBBER COLLAR FLASHING;
EPOXY ANCHOR BOLTS.

WRAPPING I-BEAM

PRO-BEL MODEL # PBE78-S:
1.
2.
3.
4.
5.

6
6

I-BEAM
CONCRETE
JOIST

I-BEAM

A-8

STAINLESS STEEL U-BAR SAFETY ANCHOR;
GALVANIZED STEEL PIER;
HEAT-SHRINK RUBBER COLLAR FLASHING;
SEAMLESS SPUN ALUMINUM FLASHING;
EXISTING METAL DECK;
FLAT STOCK DECK CLOSURE PLATE
(OPTIONAL)

1.
2.
3.
4.
5.
6.

STAINLESS STEEL U-BAR SAFETY ANCHOR;
GALVANIZED STEEL PIER c/w BASE PLATE;
GALVANIZED STEEL BOLTS;
HEAT-SHRINK RUBBER COLLAR FLASHING;
SEAMLESS SPUN ALUMINUM FLASHING;
FLAT STOCK DECK CLOSURE PLATE
(OPTIONAL);
7. STEEL BACK PLATE;
8. HEAVY DUTY HEX NUT & LOCK WASHER.

PRO-BEL MODEL # PBE76-S:

PRO-BEL MODEL # PBE75-S:
1.
2.
3.
4.
5.
6.

1.
2.
3.
4.
5.
6.
7.

STAINLESS STEEL U-BAR SAFETY ANCHOR;
GALVANIZED STEEL PIER c/w BASE PLATE;
GALVANIZED STEEL BOLTS;
HEAT-SHRINK RUBBER COLLAR FLASHING;
SEAMLESS SPUN ALUMINUM FLASHING;
STEEL BACK PLATE;
HEAVY DUTY HEX NUT & LOCK WASHER.

PRO-BEL MODEL # PB97 HEAVY DUTY DETENT-TYPE
CONCRETE EMBED ANCHOR

PRO-BEL MODEL # PB96-RP2 “FLIP-UP”
ROOF ANCHOR

SUSPENSION LINE
FOR BOSUN’S CHAIR

Anchors are designed to a maximum fall arresting force of typically 1800 lbs (8.0 kN) when wearing a body harness with a
safety factor of 2 without any permanent deformation and to
5000 lbs (22.24 kN) against fracture or detachment.

NOTE: WHEN THE ANCHOR IS COMPLETELY RECESSED BELOW
THE PAVER. THE PAVER CAN BE CORED OUT AND THE CORE CAN
BE USED AS A CAP.
RECEIVER

METAL
COVER CAP

2-1/2” (64 mm)

STAINLESS STEEL ANCHOR
SECUREMENT LUG

DETENTNOT-IN-USE
TYPE
PLUG
CONNECTOR

Anchor in terrace deck.
Paver cutout conceals
anchor when not in
use.

RAILING

PIVOTING STAINLESS STEEL
U-BAR ANCHOR
STOP LUG

EXISTING PAVERS

CONCRETE
BALCONY

D-CUP
STEEL BASE PLATE

CONNECTOR
RE-BAR
INSERT

PRIMED STEEL HSS
REINFORCEMENT
STEEL LOCK WASHER
& HEAVY DUTY HEX NUT

EXISTING
COMPOSITE DECK
STAINLESS STEEL
THREADED ROD

Application
Recommended for use in new construction or retrofit applications where it is necessary or desirable to conceal the anchor
when not in use i.e. terrace, balcony or roof deck locations. ProBel flip-up and recessed anchors are designed to suit all roof
conditions including cast-in-place and weldment applications.

CARPET
PROTECTION

Application
Ideal for use in new contruction for exposed concrete balconies where it is desirable to directly rig a bosun’s chair
over a balcony rail. If the rail cannot accommodate the loads,
outrigger beams may be employed for exterior maintenance
using a ground rigged platform. The embed anchor (connector) is removed and capped flush when not in use.

PRO-BEL ROOFTOP SUPPORTS
Pro-Bel also manufactures a complementary line of rooftop supports for pipes, satellite dishes, catwalks, cellular towers, antenna, guy wire securement, air conditioning
units and similar equipment. These supports can be supplied as stand alone items or
combined with U-bar safety anchors and are secured and flashed in using the same
reliable methods employed for Pro-Bel anchors. For further information contact a ProBel representative.

2
8

VARIES

6
7

I-BEAM

1/4”
(6 mm)

PRO-BEL MODEL # PB75-HP1 PIPE SUPPORT:

Pro-Bel galvanized steel pipe support complete with U-Bar safety anchor.

1.
2.
3.
4.
5.
6.
7.
8.

GALV. STEEL PIPE SADDLE;
THREADED GALV. ROD;
GALV. ROD DRILLED & TAPPED;
GALV. ANCHOR CAP;
TAMPERPROOF PIN;
SUPPORT BASE SECUREMENT BOLT;
GALV. STEEL SUPPORT BASE;
S.S. OR GALV. U-BAR SAFETY ANCHOR.

A-9

S A F E T Y & T I E - B A C K A N C H O R S Fall Protection Systems (continued)

DESIGN CONSIDERATIONS
Roof Space: Conventional (non-permanent) outrigger beams employing counterweights, when used with descent controlled bosun’s chair, single work cage or
platforms are normally supported to clear
a low non-structural parapet wall. Conventional outrigger beams are typically
12’-0” to 15’-0” (3658 mm to 4572 mm)
long and have a reach of 3’-0” (915 mm)
or less beyond the roof edge. They
require sufficient space on the roof to
accommodate the inboard portion of the
beam and the tie-back.
Parapet Strength: If the parapet wall is
structurally sufficient, a parapet wall
clamp may be secured to the wall for the
suspension of access equipment.
Also, a bosun’s chair can be directly
secured to a safety anchor. This is known
as direct rigging. The chair is rigged
directly to wall or roof anchors in line with
the point of suspension, and the primary
synthetic rope suspension lines are normally protected at the parapet using contractor supplied carpet or other anti-abrasion protection devices.
When the parapet is not capable of supporting the applied loads, primary suspension support equipment such as outrigger beam dollys or davits must be considered. See Pro-Bel Outrigger Beam
Systems or Davit Systems literature.

Pro-Bel portable outrigger with beam dolly is ideal for clearing non-structural parapet.
Note separate pier- type safety anchors for securing lifelines. See Pro-Bel Outrigger Beam
Systems literature.

Location of Lifeline Anchors: The
location of lifeline anchors relative to tieback anchors must be such that a worker can neither fall more than 6’-0” (1.8
m), nor contact any lower level (OSHA
1910.66, Subpart F and ANSI/IWCA
I-14.1, section 9.2.2 (g) 2). See Layout
data on page A-12.
Free Design Service: The selection of
window cleaning equipment is a performance oriented and highly specialized
field requiring an in-depth knowledge of
Rigging Methods, Safety and OSHA
Standards/State Codes. Pro-Bel provides
a free design service to ensure that ProBel systems are properly specified.

Parapet Height: Anchors can be
installed in parapet walls provided walls
meet the following criteria:
1. Wall is 42” (1067 mm) minimum
guardrail height;
2. Wall has been engineered to take the
applied loads.
Structural loads: Anchors are designed
to a maximum fall arresting force of typically 1800 lbs (8.0 kN) when wearing a
body harness with a safety factor of 2
without any permanent deformation and
to 5000 lbs (22.24 kN) against fracture or
detachment.

A-10

Pro-Bel portable aluminum ground rigged
davit arms are ideal for clearing non-structural parapets or reaching out past building face obstructions. See Pro-Bel Davit
Systems literature.

This photo shows a Pro-Bel roof anchor
installation. Anchors are welded to structural steel before a horizontal lifeline cable
system is installed to provide fall protection on this arched roof.

ANCHOR LAYOUT PROCEDURE
1. Review the Pro-Bel System & Equipment
Introduction literature (pages G-6 to G18). This data provides an overview of the
various equipment options used to clean
windows or perform other suspended building maintenance.
2. Identify all roof levels. Mark window locations on other areas requiring access on
the architectural roof plan drawing(s).
3. Examine building section drawings to
assess construction of parapet wall,
mechanical room wall and roof assembly or
other building elements as necessary.
4. Examine roof structural drawings for possible anchorage locations.
5. Examine building elevations or other drawings to identify any setbacks, recesses or
other unusual features.
6. Review the Design Considerations on page
A-10 to assist in making a "rigging" decision.
7. If it has been determined that "rigging" is
suited to using anchors only, for both the
support of primary suspension equipment
and lifelines, refer to Anchor Spacing Chart
at right on page A-12.

Note: Primary suspension equipment refers to
conventional, maintenance contractor supplied
equipment i.e. bosun's chair, transportable outrigger beams, single work cage, temporary
platform and parapet wall clamps.
ANCHOR PLACEMENT
1. After determining what areas of the building face will need to be accessed for maintenance, anchor locations can now be chosen.
2. Anchors are located on the roof of the
building and are generally secured to any
or all of the following acceptable vertical or
horizontal elements: mechanical room curb
walls; parapet walls minimum 42" (1067
mm) high; roof mounted structural elements e.g. rooftop equipment structural
support beams or columns, and similar
structures; roof decks (to concrete slab,
precast deck, structural steel, and similar
structures); finished roof top terraces.
3. Ideally locations for Pro-Bel safety anchors
are in direct line with the anticipated
"drops" and are suited to both bosun's chair
and suspended platform. A "drop" for a
chair is typically a 6'-0" (1830 mm) wide
area, and 20'-0" to 28'-0" (7000 mm to
8535 mm) for a platform. Two anchors are
required for bosun's chair (1 primary and 1
lifeline) and 4 anchors are required for a
platform (2 primary and 2 lifeline).

4. Lifeline anchors and primary tie-back
anchors for transportable outrigger beams
and parapet wall clamps should be located
in line with the point of suspension (perpendicular) whenever practical, but should
not be offset more than 10'-0" (3084 mm)
measured horizontally from running at a
right angle to the building face at the point
of suspension. The angle created by the
offset distance should not exceed 25º. See
anchor spacing chart data on page A-12.
5.

If a bosun's chair or similar single point
suspension equipment is used with the primary support lines directly attached to
anchors (direct rigging), the horizontal portion of the descent line (that portion of the
support from the anchor to the roof edge)
should be in a plane at right angles to the
face of the building at the "drop". This
guideline will ensure that slide distance and
swing action in the event of a fall will be
reduced to a reasonably safe minimum
thereby lessening the potential for worker
collision injury, while allowing for selfrecovery.
Essentially, OSHA 1910.66, Subpart F and
ANSI/IWCA I-14.1, section 9.2.2 (g) 2
requires personal fall arrest systems be
rigged such that an employee can neither
free fall more than 6'-0" (1.8 m), nor contact
any lower level. Any anchor placement scenario should reflect this requirement.

MECHANICAL
ROOM

MAIN ROOF
STAIRWELL
ROOF

Bolt Through Wall

Epoxy Adhesive
Bolts

TYPICAL CHAIR DROP
TYPICAL PLATFORM DROP

Typical Anchor Layout Plan

Weld to Structure

Adhesive Roof Anchor

ROOF PLAN / ANCHOR LAYOUT SHOWING TYPICAL CHAIR AND PLATFORM DROPS

A-11

S A F E T Y & T I E - B A C K A N C H O R S Fall Protection Systems (continued)

ANCHOR PLACEMENT (continued)

RELATIVE SPACING BETWEEN PRIMARY SUSPENSION ANCHOR AND LIFELINE ANCHOR

6. Locate the very first roof anchor, which
should be a primary suspension or tie-back
anchor. If the parapet wall is less than 42"
(1067 mm) guardrail height, this anchor
should be a minimum of 6'-0" (1830 mm)
distance from the parapet so that the worker can tie off whenever the worker has to
step within 6'-0" (1830 mm) of an unguarded edge. If the parapet is minimum 42"
(1067 mm) high, the anchor can be located
any distance inside the parapet.

The anchor spacing data shown below indicates recommended spacing of fall arrest
safety anchors relative to primary suspension or tie-back anchors.

8. After primary anchors have been located,
lifeline anchors can now be located relative
to the primary anchors using the anchor
spacing chart data at right.
9. Anchor spacing must be adjusted, of
course, to circumvent any obstruction.

MAXIMUM SPACING

25º MAX

PRIMARY SUSPENSION LINE
(FOR DIRECT RIGGING OF
BOSUN’S CHAIR OR TIE-BACK
OF OUTRIGGERS FOR SINGLE
MAN CAGE OR PLATFORM).

LOCATE ANCHORS IN ACCORDANCE WITH THE ANCHOR
SPACING CHART BELOW SO AS
NOT TO EXCEED AN ANGLE OF
25º, TO ENSURE THAT PRIMARY SUPPORT LIINES, TIE-BACK
LINES AND LIFELINES ARE
RIGGED WITHIN THE 15º OFFSET ANGLE RECOMMENDED IN
ANSI/IWCA I-14.1.
WINDOW

ANCHORS
ARE WITHIN
FALL ARREST
LIFELINE
ZONE
15º

DEPTH (SEE CHART BELOW)

7. The second and subsequent primary suspension or tie-back anchors can now be
located as per item 3.

INDEPENDENT
FALL ARREST
LIFELINE ANCHOR

PRIMARY SUSPENSION
EQUIPMENT ANCHOR

This narrow roof area requires
anchors on 5’- 0” (1830 mm) centers. See Anchor Spacing Chart
below.

90º

OUTSIDE FACE OF
PARAPET WALL OR
BUILDING
BOSUNS CHAIR

LANYARD LENGTH 4’-3” (1295 mm) MIN.

Plan View of Roof Showing Rigging In Line with
Anchors
ANCHOR SPACING CHART
DEPTH

Note: Pro-Bel tie-back/lifeline anchors and
direct rigging anchors are the same and are
used interchangeably.

A-12

Metric (mm)

U.S./Imperial

21’-5”

6528

10’-0”

3048

19’-4”

5893

9’-0”

2743

17’-2”

5232

8’-0”

2438

U.S./Imperial

Pro-Bel roof anchors welded to beams
before steel deck is installed.

MAXIMUM SPACING

15’-1”

4597

7’-0”

2134

12’-11”

3937

6’-0”

1829

10’-8”

3251

5’-0”

1524

When rigging primary lines, tie-back lines
and lifelines for a bosun’s chair, single
work cage or platform, there are many scenarios having an influence on whether
lines are anchored in line with or offset
from the point of suspension. Ultimately,
the object is to place the anchors in a manner that will suit chair and platform locations within the variable work zones while
ensuring that the OSHA maximum free fall
distance of 6’-0” (1.8 m) is not exceeded, in

the event of a worker falling.
Recognizing this, Pro-Bel employ a 25O
angle placement criteria for the location of
both primary support lines and secondary
lifelines. This criteria will ensure that lines
are rigged within 15O of the point of suspension in accordance with the
ANSI/IWCA I-14.1 Window Cleaning
Safety Standard.

RELATED DATA
For general data relating to all Pro-Bel
products and services e.g. codes, installation, warranty, etc., refer to the Pro-Bel
System & Equipment Introduction literature (pages G-2 to G-32). For product
data relating to other fall protection systems and primary suspension equipment, see other Pro-Bel literature.

EXAMPLE INSTALLATION _ RETROFIT ROOF ANCHOR

1. Small area of roof covering is removed
down to concrete deck.

2. Holes are drilled into or through concrete
deck to accommodate roof anchor bolts.

3. Anchor is installed using either boltthrough or chemical adhesive securement
depending on access from below.

4. Watertight integrity of roof is restored
using spun aluminum flashing and new
roof covering (roof patch). Photo shows
protected membrane roof.

5. Top of spun aluminum flashing is sealed
to steel anchor using a conformable mastic tape and heat-shrink rubber collar
flashing.

6. Close-up of anchor. Installation method
is similar for both conventional roof (membrane above insulation) and protected
membrane roof (membrane below insulation).

Pro-Bel PBE Series roof anchors installed
in single ply roof.

A-13

S A F E T Y & T I E - B A C K A N C H O R S Fall Protection Systems (continued)

In addition to window cleaning applications, Pro-Bel safety anchor systems are
recommended for work such as:
• construction, restoration, cleaning,
sandblasting, caulking, or pointing;
• fall protection for ladder work using full
body harness and lanyard; and
• interior or exterior industrial applications wherever maintenance personnel
are exposed to falls from elevation.
Pro-Bel safety anchor systems are compatible with all types of suspended maintenance equipment and can be used
interchangeably for either tying off suspended equipment or fall protection lifelines.
BUILDING OWNER ASSURANCE
There is a shared responsibility between
the building owner/employer and the window cleaning/suspended maintenance
contractor. OSHA and ANSI/IWCA I-14.1
acknowledges that the building owner/
employer is the controlling employer and
must assure the contractor that the system has been installed in accordance
with engineered drawings, test data
(when required), and equipment specifications. The building owner/employer
shall provide written assurance that the
installation has been annually inspected
and maintained to ensure that all equipment is safe and operating as required.

Budget pricing is provided on a projectto-project basis for both materials and
installation, or materials only. See “Technical Consultation” at right.
FREE DESIGN SERVICE
The selection of window cleaning
equipment is a performance oriented
and highly specialized area. Also the
issues of fall protection and fall arrest
are serious concerns with OSHA
inspection authorities. Interpreting the
myriad of OSHA standards, including
the separate requirements of various
states, and proposed changes, is a
daunting task at best.
Each building is different, requiring an
individual technical approach and a
time commitment beyond the scope of
most professional offices. Even with a
high degree of knowledge and the
best of intentions, the planning
process can go askew. It is for these
reasons that Pro-Bel provides architects and engineers with a FREE
DESIGN SERVICE, and to ensure that
Pro-Bel Window Cleaning/Suspended
Maintenance Systems are properly
specified and installed.

NOTE: NO CUTTING
OR WATERPROOFING
REQUIRED

Simply provide the following information:
• roof plans (architectural & structural);
• building elevations;
• typical floor plans
• section drawings showing parapet walls
or roof edge condition and mechanical
room walls; and
• any other drawings pertinent to window
cleaning/suspended maintenance requirements.
Pro-Bel will review drawings and provide
one or more concepts as required with
respect to equipment, tie-back methods
and similar options.
In addition, Pro-Bel Enterprises Limited
will provide budget pricing for window
cleaning/suspended maintenance systems contingent upon design acceptance
between Pro-Bel and architect/owner for
the proposed project.

OPTIONAL POST HEADS
INCLUDE ANCHOR EYE,
STANDARD RUNNER,
AND REVERSIBLE
RUNNER

PB-01
SAFEST SOLUTION FOR
OLD STEEL ROOFS
FIXED TO METALLIC
FRAMEWORK

PB-00

PB-00
UNIVERSAL
SOLUTION
FOR NEW
STEEL
ROOFS, NO
MATTER THE
FRAMEWORK

A-14

TECHNICAL CONSULTATION
Pro-Bel Enterprises Limited provides a
complete technical consultation service,
available to architects, consultants, engineers, contractors, and building owners.
Without obligation, Pro-Bel will provide
interested parties with a proposed window cleaning/suspended maintenance
design concept to OSHA requirements,
including anchor and equipment locations, securement, roofing details and
specifications.

PRO-BEL PB-00 AND PB-01 STAINLESS STEEL BREAKAWAY ANCHORS FOR STEEL ROOFS
(Safety Anchor and/or Horizontal Lifeline Support)

10” (250 mm)

Refer to Pro-Bel “Digest for Building
Owners, Property Managers, and General
Contractors” literature for more detailed
information.

AVAILABILITY & COST
Pro-Bel window cleaning/suspended
maintenance safety systems are distributed throughout the United States,
Canada and internationally.

8-3/8” (210 mm)

OTHER USES
Generally, Pro-Bel window cleaning/suspended maintenance anchor systems are
economical or practical for all new or
retrofit buildings 3 storeys and higher
where windows or building facades are
accessed from the roof.

PB-01

Application (Breakaway Concept)
In a fall arrest situation, a breakaway mechanism is activated at a
pre-determined point e.g. 617 lbs
(280 kg). A built-in energy absorbing device ensures the anchorage
will hold in case of a fall. Concept
substantially reduces load applied
to securement screws.

SPECIFICATION

B. AISI SG-971-1996, with 2000 Supplement
"Specification for Design of Cold-Formed Steel
Structural Members”.

SPEC NOTE: This basic guide specification
(Section 11010 - Window Washing Systems) is
C.
devoted exclusively to safety and tie-back
anchors and is written in accordance with the
CSI/CSC Three Part Section Format. It must be
adapted to suit the requirements of individual projects. If other equipment such as outrigger
D.
beams, davits, monorails, horizontal cable lifelines or other equipment is required, refer to
E.
appropriate Pro-Bel literature and incorporate
materials and/or other clauses as required.
Square brackets [ ] indicate choice, alternatives,
data required or need for the specifier to make a 1.05
decision.
A.
PART 1 - GENERAL
1.01 General Requirements
A. Comply with the conditions of the Contract and
Division 1 - General Requirements.
1.02 Section Includes
A. Work of this section includes the design, supply
and installation of window cleaning/suspended
maintenance equipment.
1.03 Related Sections
A. Unloading and hoisting of equipment to roof
Section [01500]
B. Cast-in-place concrete, including installation of
embedded items
Section [03300]
C. Precast concrete
Section [03400]
D. Structural Steel
Section [05120]
E. Open Web Steel Joists
Section [05210]
F. Metal Deck
Section [05310]
G. Catwalks
Section [05516]
H. Roofing
Section [07500]
I. Flashing
Section [07600]
J. Sealants
Section [07900]
K. Rigging access doors in walls
Section [08111]
L. Guiding tracks or mullions on exterior of building
Section [08800]
M. Hot & Cold water supply, faucets and drain at
[every] roof level
Section [15400]
N. Three phase 208 volts 60 Hertz service at [every ] roof
level
Section [16050]

Aluminum Association AA ADM-1-Aluminum
Design Manual, 2000 and AWS D1.2-97 Structural Welding Code - Aluminum.
AWS D1.1-2000 Structural Welding Code - Steel.
ANSI/IWCA I-14.1-2001 Window Cleaning Safety
Standard (International Window Cleaning Association).
Design Requirements
Design window cleaning/suspended maintenance system to suit building and in accordance
with plans, specifications, standards, and regulations/codes contained in section 1.04 and 1.08.

B. Locate safety and tie-back anchors to suit suspension equipment which will be used on the
building with respect to items such as rigging,
spacing, roof edge condition and similar items.
C. Design all anchor components to provide adequate attachment to the building and suited to
current window cleaning/suspended maintenance practices. Ensure compatibility with industry standard equipment.
D. Ensure all anchor components conform to proper engineering principles and have been
designed by a Professional Engineer qualified in
the design of window cleaning/suspended maintenance equipment, its application and safety
requirements.
E. Design system fall arrest safety anchors to comply with the following structural requirements:
1. Fall arrest safety anchors are designed to a
typical maximum fall arresting force of 1800 lbs
(8.0 kN) when wearing a body harness with a factor of safety of 2 without any permanent deformation and to 5000 lbs (22.2 kN) against fracture or
detachment.
SPEC NOTE: For California State, substitute
5400 lbs (24 kN) in lieu of 5000 lbs. (22.2 kN).

A. Manufacturer: Work of this Section to be executed by manufacturer specializing in the design,
fabrication and installation of window cleaning/
suspended maintenance systems having a minimum of 5 years documented experience.
B. Loading and safety assurance: Work of this
Section to meet the requirements of governing
codes and jurisdiction and to comply with properly engineered loading and safety criteria for the
intended use.
C. Insurance: Manufacturer to carry specific liability
insurance (products and completed operations) in
the amount of $2,000,000.00 to protect against
product/system failure.
D. Welding to be executed by certified welders in
accordance with AWS requirements.
1.08 Regulatory Requirements
SPEC NOTE: Re 1.08,A. Specify for all States
other than New York and California.
A. Comply with the following OSHA regulations:
1. 1910, Subpart D (Walking and Working
Surfaces).
2. Appendix C to 1910 Subpart F (Personal Fall
Arrest Systems).
3. "OSHA Ruling on Window Cleaning by
Bosun's Chair" Memorandum to Regional
Administrators from P. K. Clark, Director,
Directorate of Compliance Programs.
4. 1910.66, Subpart F (Powered Platforms).
SPEC NOTE: Re1.08.B and 1.08.C. Specify for
New York State or California only as applicable.
B. Comply with the following New York State regulations:
1. Department of Labor Advisory Standard 101
- Construction, Operation and Maintenance of
Suspended Scaffolds Used for Window Cleaning
and Light Maintenance.
2. Advisory Standard 111 - Hoisting Machines
Used for Suspended Scaffolds.
3. Department of Labor Industrial Code Rule 21
- Protection of Persons Employed at Window
Cleaning - Structural Requirements, Equipment
and Procedures.

C. Comply with the following California State regulaSPEC NOTE: Re 1.03,O. Specify independent 1.06 Shop Drawings and Engineering Certification
tion:
protected main line power and weatherproof
A. Submit shop drawings showing complete layout
1. Code of Regulations, Title 8 - Industrial
Hubbell twist-lock 208 volts, 3 phase, 60
and configuration of complete window cleaning/
Relations, Article 5 (Window Cleaning), Article 6
Hertz, 30 amperes receptacle (HBL2620SW,
NEMA No. L6-30R for rental powered platsuspended maintenance system, including all
(Powered Platforms for Exterior Building
forms). Power to be located no more than
components and accessories. Clearly indicate
Maintenance), and Appendix C to Article 6
100'-0" (30 m) from window cleaning/suspenddesign and fabrication details, window "drops",
(Personal Fall Arrest System).
ed maintenance equipment location. Outlets to
hardware, and installation details.
experience no more than 3% voltage drop
1.09 Maintenance Data
under full loading. Pro-Bel wall or roof anchors
B. Shop drawings to include installation and rigging
may be employed for strain relief. Contact Proinstructions
and
all
necessary
Restrictive
and
A. Submit 1 copy of system Equipment Manual &
Bel for requirements.
Non-Restrictive Working Usage Notes and
Inspection Log Book, with "Initial Inspection General Safety Notes.
O. Weatherproof power supply outlets with strain
Certification for Use" and "Inspection Sign-Off"
relief anchors
Section [16132]
forms completed.
C. Shop drawings to be reviewed by a professional
engineer, and upon request, complete with test
1.04 References
B. Submit 2 copies of a reduced plastic laminated
reports.
as-built shop drawing showing equipment locaA. AISC S342L-1993, with Supplement No.1 "Load
tions and details. This drawing is to be posted
and Resistance Factor Design Specification for 1.07 Qualifications
near exits onto the roof.
Structural Steel Buildings".

A-15

PART 2 - PRODUCTS
2.01 Manufacturer
A. This specification is based on systems currently
being manufactured by PRO-BEL ENTERPRISES
LTD. Toll free: 1-800-461-0575. Telephone: 905427-0616, Fax: 905-427-2545, info@pro-bel.ca.
B. Other manufactured products meeting this specification may be substituted provided that manufacturers show proof of product insurance.
Equipment details to be approved by the architect
and/or consultant. Companies, such as miscellaneous metal fabricators, who are not normally
engaged in the design and manufacture of window cleaning/suspended maintenance equipment
are not permitted to bid.
2.02 Equipment
SPEC NOTE: List type and quantity as required.
A. [

]

B. [

]

C. [

]

or modified bitumen roofs) or s.s. cap for PB
series roof anchors (any type roof).
E. Seamless spun aluminum flashing (for steel pier
anchors): Type 6061-T6 alloy to ASTM B2212000 with deck flange flashed in to NRCA or
CRCA recommendations. Seal top of aluminum
flashing with [conformable mastic tape and torch
applied heat-shrink rubber collar flashing]
]
[detachable watertight stainless steel cap].
F.

Miscellaneous bolts, nuts and washers: mild
steel, Type 300W with yield strength of 44 Ksi
(300 MPa), hot-dip galvanized to ASTM A123/A
123M-2000 or Type 304 stainless steel with yield
strength of 35 Ksi (240 MPa).

2.04 Fabrication

2.03 Materials
SPEC NOTE: Delete items not required.
Safety U-bars: [Type 304 stainless steel with yield
strength of 35 Ksi (240 MPa)] [mild steel, Type
300W with yield strength of 44 Ksi (300 MPa), hotdip galvanized to ASTM A123/A 123M-2000]. Ubar to be not less than 3/4" (19 mm) diameter
material with 1-1/2" (38 mm) eye opening.

B. Securement bolts: mild steel, Type 300W with
yield strength of 44 Ksi (300 MPa), hot-dip galvanized to ASTM A123/A 123M-2000.
C. Hollow steel section (HSS) piers: mild steel, Type
300W with yield strength of 50 Ksi (350 MPa).
Wall thickness to suit application, [hot dipped galvanized to ASTM A123/A 123M-2000] [with ProBel Protex 3/16” (2.4 mm) thickness, black colored, two-component TPU polyurethane/polyurea
coating system].
SPEC NOTE: Pro-Bel Protex is a superior substitute to galvanizing and provides exceptional
impact and abrasion resistance.

A. General:
1. Fabricate work true to dimension, square,
plumb, level and free from distortion or defects
detrimental to appearance and performance.
2. Grind off surplus welding material and ensure
exposed internal corners have smooth lines.
PART 3 - EXECUTION
3.01 Examination
A. Examine surfaces and areas upon which the
work of this Section depends. Report to the
Contractor in writing, defects of work prepared by
other trades and other unsatisfactory site conditions which would cause defective installation of
products, or cause latent defects in workmanship
and function.

D. Deform threads of tail end of anchor studs after
nuts have been tightened to prevent accidental
removal or vandalism.
SPEC NOTE: Re 3.02,E. Specify for furnish only
projects if required.
E. Manufacturer to assist and/or supervise installation of window cleaning/suspended maintenance
equipment installed by others.
F.

Structural steel to receive safety anchors to have
adequate bearing surface as indicated on shop
drawings and/or to ensure 100% weld.

3.03 Final Adjusting and Inspection
A. Adjust and leave equipment in proper working
order.
B. Complete "Initial Inspection - Certification for
Use" form included in Equipment Manual &
Inspection Log Book.
3.04 Testing
A. All anchors relying upon chemical adhesive fasteners to be 100% tested on site using load cell
test apparatus in accordance with manufacturer's
recommendations.

B. Verify site dimensions.
C. Commencement of work will imply acceptance of
prepared work.

SERVING U.S.A. AND CANADA, COAST TO COAST.
PRO-BEL ENTERPRISES LIMITED
Head Office

Western Office

765 Westney Road S,
Ajax, ON CA L1S 6W1
[ t ] 905.427.0616
[ f t ] 800.461.0575
[ f ] 905.427.2545
[e] info@pro-bel.ca

#103-350, East Kent Ave S
Vancouver, BC V5X 4N6
[ t ] 604.687.1301
[ f ] 604.687.1306
[ e ] infovan@pro-bel.ca

PRO-GRESS • PRO-BEL
www.pro-bel.ca

Printed in Canada

D. Base plate and all other sections: [galvanized] 3.02 Installation
[Pro-Bel Protex coated] mild steel as above with
A. Install equipment in accordance with approved
yield strength of 44 Ksi (300 MPa). Thickness and
shop drawings and manufacturer's recommendasecurement to suit application.
tions.
SPEC NOTE: Re 2.03,E. Specify aluminum
flashing for BUR or modified bitumen roofs only
B. Co-ordinate installation with work of related
(membrane above or below insulation). For sintrades.
gle ply roofs, flashing to be in accordance with
membrane manufacturer's instructions. Specify
C. Install all work true, level, tightly fitted and flush
conformable mastic tape and heat-shrink rubber
with adjacent surfaces as required.
collar flashing for EPB Series roof anchors (BUR

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14.1 FLIP Anchors

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