Colgate Scaffold Personnel and
- Safe lives
chance of injury
those above and those below
- Meet all
requirements of OSHA, Corps of
Engineers and ANSI for nets
- Save equipment
from loss, destruction, or damage
complete visibility and ventilation
"flying object" damage
low-cost protection per man
an Authorized Distributor of Sino/Sala
Perimeter Protection Systems
Column adapter for
Column adapter mounted
on steel column
Base plate for concrete slab
Net Systems produce a complete system
for conveniently rigging nets around
the perimeter of a building under
construction. The system is adaptable
for use on both concrete and steel
Colgate Scaffold rents complete
systems for building perimeter protection.
Systems include all parts required
to suspend nets around the outside
edge of a building, including cantilever
arms, arm mounts, cables, snaps,
turnbuckles, and nets. Systems arrive
at the jobsite complete and ready
for installation down to the last
can be used for debris protection
or personnel fall protection or
both, and can be installed on either
concrete or steel buildings.
as a Personnel Fall-Protection System
The suitability of this system for
personnel fall protection is completely
dependent on whether the user exactly
meets stringent standards of use.
1. The system must be erected in strict
accordance with instructions.
2. The system must be tested after
erection, as described in instructions.
3. The nets must be cleaned daily,
and more often if the rate of debris
build-up is high.
4. The nets must be moved up the building
as construction progresses, in such
a way that no worker is exposed to
a fall distance that violates federal,
state or local regulations.
meet the above standards of use
render the system non-functional
for personnel fall protection. Any
misuse of the system can result
in extremely dangerous conditions
by giving workers a false sense
of security, thereby increasing
their actual risk.
Provide the Proper Debris Mesh to
Suit Your Job
The Perimeter Nets are actually
two separate nets manufactured as
a single unit. One layer is a 3
1/2-inch, high strength mesh. The
other layer is a smaller debris
mesh, which is varied depending
upon the application. Give us details
of the types of work which will
be performed above the net, as well
as the type of debris that could
be generated, and we will assist
you in choosing the proper sized
on a Concrete Building
For concrete buildings, we furnish
base plates which are anchor bolted
to the floor below the nets. Each
base plate holds a rocker sleeve
assembly, and a cantilever arm.
Anchor bolts for the base plates
can be either expansion bolts drilled
after the floor is poured and cured,
or they can be cast in place.
on a Steel Building
On steel buildings, cantilever arms
are mounted to each column by means
of an adapter assembly which fastens
to the flanges of the column by
means of two "J" bolts
or clamps depending on which way
the "I" beams are set.
Installation of Perimeter Net System
Net Systems offers the following
- the net system is rented, so
it is less costly than lumber
which is purchased, used only
once, and then scrapped. Erection
labor is also less.
Easy Installation - the system
is put in place by workers who
remain completely within the perimeter
of the building. Exterior climbing
catch" - nets absorb
the energy of failing objects
by giving with the fall. Thus,
unlike wood, they minimize ricocheting
15 feet out - nets are supported
on 21-ft. arms at a 45 degree
angle, so they extend outward
a full 15 feet.
Access - when it is necessary
for the crane to operate up to
the edge of the building, the
arms are simply pulled into a
vertical position and released
outward as the crane moves out.
inside shores and uprights
to interfere with scaffolds or
work on the floor.
The perimeter debris net system
for concrete buildings consists
basically of three major components
and various lengths of cable assemblies:
1. The base plate, Figure 1 on this
page,provides an anchor on concrete
buildings for the cantilever arm
and the inboard cable;
2. The cantilever arm, Figure 2,
provides an attachment for the outboard
cable; Figure 2A.
3. The rocker arm, Figure 3, mounts
the cantilever arm on the base plate,
holds it at right angles to the
perimeter of the building and at
45 degree to the vertical plane
of the building. The rocker arm
and the sleeve assembly will rock
inward to allow the cables and nets
to be attached from the floor above
the anchoring point.
buildings may require a column adapter
instead of a base plate to support
the cantilever arm. These adapters
are fastened to concrete columns
with a web ratchet assembly, Figure
drawing of a properly erected perimeter
net is shown in Figure 4.
Perimeter nets on steel buildings
are rigged the same as on concrete
buildings, except that the rocker
arm is now attached to the column
adapter rather than the base plate
used for concrete buildings. A typical
column adapter bracket is shown
in Figure 5 and 5A.
assembly column adapter bracket
is shown in Figure 6. The cross
section drawing of a properly erected
perimeter net for steel buildings
is shown in Figure 7.