By GREEN LINK Engineering.
KnuckleHead Heavy Pipe Supports are the lightweight roof support solution to distribute the load of the heaviest equipment. Designed for natural gas to water pipelines, as well as pipes up to 2.5” nominal pipe size, Knuckleheads can support upwards of 600 pounds. Because these supports do little to add to the roof load, they prevent low points where water can pond and ice can build up. Additional features are:
Supports up to 3” outside diameter pipes
2.5” to 3.5” adjustable height from base to support point
Molded from GREEN LINK Type 1 glass-reinforced nylon resin. Strong, tough, weatherproof, impervious to freeze-thaw cycles
Matte-finish nylon allows bonding with adhesive
Base designed for adhesive attachment or mechanical fastening for seismic/wind uplift specification
KnuckleHeads will prevent damage caused by ponding water, wind, ice, flying debris or seismic events and protect the integrity of the roofing system including roof-mounted structures and equipment. They are engineered with a Universal Base. A range of head designs are available depending on the particular support application needed.
KnuckleHeads can be attached directly to the roof substrate either mechanically combined with GREEN LINK Adhesive/Sealant, or with GREEN LINK Adhesive/Sealant alone.
The Universal Base is designed with four holes at its center for accepting mechanical fasteners. Before penetrating the roof membrane, the contractor should consult with the manufacturer to ensure that the warranty is not voided.
The KnuckleHead Heavy Pipe Support comes with a custom-engineered KnuckleStrap. Molded from tough, weatherproof urethane and tinted safety yellow, the strap is screwed onto the head to ensure the pipe is secure even in the harshest conditions such as high winds and seismic events. An optional slip-resistant KnucklePad can be added to the base to reduce movement and protect the roof membrane.
GREEN LINK Adhesive/Sealant by itself is sufficient to create a strong bond with more than 275 psi shear strength. This prevents movement of the supports caused by equipment vibration, high wind or seismic events. When mechanical fasteners are used, GREEN LINK Adhesive/Sealant should be applied around the perimeter of the base and on each screw head to prevent roof leaks caused by penetration.
The base features 16 holes, allowing adhesive to squeeze out as the base is pressed onto the roof surface. This creates “adhesive rivets” which strengthen the bond. KnuckleHead installations have been performing in the field for more than 15 years, with constant exposure to high temperatures, freeze-thaw cycles, UV exposure and stress, and they have shown no signs of deterioration.
GREEN LINK Adhesive/Sealant is environmentally safe and presents no toxic risk to contractors or building occupants. It is solvent-free, isocyanate-free, nonflammable and odorless.
Original article source: GREEN LINK Engineering
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