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CABLE RAIL FAQs

What is the spacing between lines of cable?
The recommended cable spacing should be no more than 3-inches apart. As the cable is not rigid, the flex in the
cable must be accounted for, and not exceed the 4-inch sphere limit as set by the International Building Code.

What is the maximum spacing between intermediate posts?
Posts and intermdiate posts and pickets should be spaced no more than 48-inches apart to minimize any
deflection that may occur if the cables are forced apart.

What is the recommended tension on each cable run?
Properly installed cables typically have a tension in excess of 225 lbs per cable. Be sure that your railing frame is
designed and built strong enough to support these loads. Tensioning tools are available (pages 242 and 256) to
assist with this portion of the installation.

11
9
7
5
3
1
2
4
6
8
10
12 Shown 1/8" cable. Center to center STAINLESS & CABLE RAILING
of cable is 3-1/8" apart.
Recommended cable
tensioning sequence

What are the recommended hole sizes to drill?
Drill holes in the posts depend on the cable size and type of fitting. See tables:

METAL POSTS WOOD POSTS Invisiware® Receiver Invisiware® Invisiware®
Part numbers: Radius Ferrule Radius Ferrule
R-6-12 through R-6-82 part number RF-4 part number RF-6
Cable Dia.: 3/16"
Cable Dia.: 1/8"
Pull-Lock®
*see note if using grommets
*see note if using grommets
Cable Size Threaded Term. Post Intermediate Posts Quick-Connect Post Cable Size Threaded Term. Post Intermediate Posts Quick-Connect Post Part numbers: 29/64" 29/64"
PUL-4-12/PUL-6-12 through
PUL-4-3.030/PUL-6-3.030
(Ø .453")
(Ø .453")
1/8" 5/16" 1/4" 3/8" 1/8" 5/16" 1/4" 3/8" Cable Dia.: 1/8" and 3/16"
3/16" 3/8" 1/4" 9/16" 3/16" 3/8" 1/4" 9/16" Drill 2 places
1/4" 7/16" 5/16" 9/16"
If desired, Quick-Connect SS 29/64"
®
If desired, Quick-Connect SS (Ø .453")
®
posts may be through drilled posts may be through drilled
at 5/16" and then counter- at 1/4" and then counter-bored
bored with the recommended with the recommended Quick- 5/32" 7/32"
(Ø .219")
(Ø .156"
®
Quick-Connect SS drill to Connect SS drill to countersink *see note *see note
®
countersink the fitting. the fitting.
*Note: If grommets are being used, hole through which cable
passes should be drilled as follows: RF-4 and RF-6 = 1/4" (.25")
(TUBE)
What is the maximum length of a single run of cable?
Straight runs of cable (no turns/stairs) should not exceed 70 feet. Runs with corner bends (2 bends at most)
should not exceed 40 feet. Depending on the number of turns the cable run has, you may consider a tensioning
fitting on both ends.
T: 908.757.2323 ✛ F: 908.757.3439
AISALES@ARCHIRONDESIGN.COM ✛ ARCHIRONDESIGN.COM 235