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SECTION 270529 – HANGERS AND SUPPORTS FOR COMMUNICATIONS SYSTEMS
PART 1 – GENERAL
1.1 SUMMARY
A. This section shall govern the products and installation of hangers and supports for
communications systems.
B. Section Includes:
1. Non-Continuous Cable Support (J-Hooks) Systems.
1.2 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
B. Section 270000 “Communications” including all referenced codes, standards and guidelines.
1.3 SUBMITTALS
A. The following submittals are due at the Pre-construction Phase, in accordance with
submittal requirements in Section 270000 “Communications”.
1. Product Information
a. Provide table of contents with all product names, manufacturer, and specific
product number identified to accompany manufacturer cut-sheets.
b. Provide manufacturer’s product information cut-sheet or specifications sheet with
the specific product number identified or filled out.
2. Shop Drawings
a. In conjunction with horizontal and backbone cable routing, provide scaled drawings
(not less than 1/8” = 1’-0”) indicating routing of cable and means of support (where
supported by cable tray vs. j-hooks).
3. Coordination Drawings: Floor plans and sections, drawn to scale, on which the following
items are shown and coordinated with each other, using input from installers of the items
involved:
a. Include scaled j-hook layout and relationships between components and adjacent
structural, electrical, and mechanical elements.
b. Vertical and horizontal offsets and transitions.
c. Clearances for access above and to side of j-hooks.
d. Vertical elevation of j-hooks above the floor or below bottom of ceiling structure.
e. These locations shall be fully coordinated with all other trades.
B. The following submittals are due at the Post-construction Phase, in accordance with
submittal requirements in Section 270000 “Communications”.
1. Record Drawings
a. In conjunction with horizontal and backbone cable routing, provide scaled drawings
(not less than 1/8” = 1’-0”) indicating routing of cable and means of support. Design
drawings or shop drawings modified in the field will not be accepted.
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2. Manufacturer and Maintenance Manuals for all installed equipment
a. Provide manufacturer’s product information cut-sheet or specifications sheet with
the specific product number identified or filled out.
PART 2 - PRODUCTS
2.1 NON-CONTINUOUS CABLE SUPPORT (J-HOOK) SYSTEMS
A. Non-continuous cable supports
1. J-hooks shall provide a bearing surface of sufficient width to comply with required bend
radii of high-performance cables and be UL Listed.
2. J-hooks shall have flared edges to prevent damage while installing cables.
3. J-hooks shall have the manufacturer’s name and part number stamped on the part for
identification.
4. J-hooks sized 1-5/16-inches and larger shall have a cable retainer strap to provide
containment of cables within the hanger. The cable retainer strap shall be removable,
reusable, and suitable for use in air handling spaces.
5. J-hooks shall have an electro-galvanized or G60 finish and shall be rated for indoor use
in non-corrosive environments.
6. J-hooks shall be ERICO CADDY CAT LINKS models CAT32HP, CAT48HP,
CAT64HP or B- Line Systems models BCH21 or 1-5/16”, BCH32, BCH64 or approved
equals.
7. The minimum size for the main J-hook pathway shall be 4”. Where cabling is installed
within and is intended for an individual room or area, the minimum size J-hook shall be
2”. The size or dimension of this J-hook pathway shall not be reduced based on any
factors.
8. 1-5/16-inch J-hooks shall only be installed to support the excess cable slack for wireless
access point locations or other similar uses as approved by KU IT.
PART 3 - EXECUTION
3.1 J-HOOK SYSTEM INSTALLATION
A. Installation and configuration shall comply with TIA-569-C, NPFA 70, and the
manufacturer’s installation instructions.
B. Install cables using techniques, practices, and methods which are consistent with Category
6A and optical fiber cabling and that supports their performance of completed and linked
signal paths end-to-end.
C. J-hooks shall be located at intervals of 60-inches or less.
D. J-hooks shall be selected to accommodate the immediate and anticipated future quantity
and weight of cables. Size j-hooks to allow for a maximum of 25% future capacity.
E. Structural steel, wood, masonry, independent (minimum 3/8” rods), or other structural parts
of the building shall be used for cable support attachment points up to the total weight for
which the fastener is approved. Rods that are currently employed for other functions (e.g.
suspended ceiling grid support) shall not be utilized as attachment points for j-hooks.
Support clips or support wires shall not be used in any fashion to secure, support or attach J-
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hooks to building structure.
F. Cable hooks shall be installed such that cable slack between supports is a minimum of
6-inches above ceilings.
G. Provide adequate j-hooks to ensure telecommunications cabling is a minimum of 6-inches
from light fixtures and power conduits.
H. Where telecommunications cabling is being supported by j-hooks, provide a cable hook at
every change in direction.
I. J-hooks shall be installed in a conveniently accessible location.
J. Route cabling such that a minimum of 48-inches is provided between cabling and electric
motors or generators.
END OF SECTION 270529
