Safety Nets

Colgate Scaffold Personnel and Debris Nets

  • Safe lives
  • Reduce chance of injury
  • Protect those above and those below
  • Improve workplace safety
  • Improve worker morale
  • Increase worker productivity
  • Reduce compensation liability
  • Meet all requirements of OSHA, Corps of Engineers and ANSI for nets
  • Save equipment from loss, destruction, or damage
  • Allow complete visibility and ventilation
  • Reduce "flying object" damage
  • Offer low-cost protection per man

Colgate Scaffold is an Authorized Distributor of Sino/Sala Inc.

Perimeter Net Systems

Installed Perimeter Protection Systems

Column adapter for
steel buildings

Column adapter mounted
on steel column

Base plate for concrete slab

Perimeter 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 buildings.

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 cable clamp.

This system can be used for debris protection or personnel fall protection or both, and can be installed on either concrete or steel buildings.

Suitability 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.
Extremely important!

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.

Failure to 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.

Colgate Scaffold will 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 mesh.

Installation 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.

Installation 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.

Typical Installation of Perimeter Net System

The Perimeter Net Systems offers the following advantages:

  • Economy - 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.
  • Fast, Easy Installation - the system is put in place by workers who remain completely within the perimeter of the building. Exterior climbing is eliminated.
  • "Soft catch" - nets absorb the energy of failing objects by giving with the fall. Thus, unlike wood, they minimize ricocheting action.
  • Extends 15 feet out - nets are supported on 21-ft. arms at a 45 degree angle, so they extend outward a full 15 feet.
  • Crane 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.
  • No inside shores and uprights to interfere with scaffolds or work on the floor.

Perimeter System Components

For Concrete Buildings
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.

Some concrete 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 3A.

A cross-section drawing of a properly erected perimeter net is shown in Figure 4.

For Steel Buildings
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.

A corner 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.





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