Product Overview

DURA-BLOK
Rooftop Supports
DURA-BLOK
™
Rooftop Supports
290
EatonB-Line series Pipe Hangers & Supports
Rooftop Support Specification
SECTION 07720
ROOFTOP SUPPORT SYSTEMS
(Applicable to Section 15060 (Mechanical) and Section 16070 (Electrical)
PART 1 GENERAL
1.01 SECTION INCLUDES
A. The work covered by this specification consists of furnishing all labor, equipment, materials and accessories,
and performing all operations required for the correct installation of recycled rubber pipe [conduit] supports
for mechanical piping [electrical conduit] systems.
1.02 REFERENCES
A. ASTM A653 G90 SS Gr. 33 - Specification for Steel Sheet, Zinc Coated (Galvanized) by the Hot Dipped Process
B. ASTM B633 - Specification for Electrodeposited Coatings of Zinc on Iron and Steel
C. ASTM C531 – Test Method for Linear Shrinkage and Coefficient of Thermal Expansion of Chemical Resistant
Mortars, Grouts, Monolithic Surfaces, and Polymer Concretes
D. ASTM C642 – Test Method for Specific Gravity, Absorption, and Voids in Hardened Concrete
E. ASTM C672 – Test Methods for Scaling Resistance of Concrete Surfaces Exposed to Deicing Chemicals
F. ASTM D412 – Test Methods for Vulcanized Rubber and Thermoplastic Elastomers – Tension
G. ASTM D395 – Standard Test Methods for Rubber Property – Compression Set
H. ASTM D573 – Test Method for Rubber – Deterioration in an Air Oven
I. ASTM D746 – Test Method for Brittleness Temperature of Plastics and Elastomers by Impact
J. ASTM D2240 – Test Method for Rubber Property – Durometer Hardness
K. NFPA 70 – National Electrical Code
1.03 QUALITY ASSURANCE
A. Rubber / steel pipe supports shall be manufactured under a strict quality control program assuring quality
product delivered to the jobsite. Pipe supports that are damaged shall not be installed.
B. Workmanship: All pipe [conduit] supports to be installed by a qualified piping [electrical] contractor and
installed in accordance with manufacturer’s recommendations.
1. All work shall comply with all applicable federal, state, and local codes and laws having jurisdiction.
2. All work shall conform to accepted industry and trade standards for pipe support [conduit] installations.
PART 2 PRODUCTS
2.01 ACCEPTABLE MANUFACTURERS
A. Manufacturer: Subject to compliance with these specifications, pipe support systems shall be DURA-BLOK
™
design
as supplied by Eaton B-Line Business [or engineer approved equal].
2.02 MATERIALS
A. Curb base must be made of 100% recycled rubber and polyurethane prepolymer with a uniform load capacity of 500 pounds per
linear foot of support*. In addition, each base to have a reflective red stripe.
(*See 3.01(C))
B. Dimensions: 6-inches wide by [4] [5.0] [6.75] inches tall by [9.6] [20.2] [30.8] [41.4] [52.0] inches long.
C. Steel frame: Steel, 14ga strut galvanized per ASTM A653 or 12ga strut galvanized per ASTM A653 for bridge series.
D. Attaching hardware: Zinc-plated threaded rod, nuts and attaching hardware per ASTM B633.