X-cabling patterns for anchor structures 20m span, Side views shown – Anchor EVENT SERIES - PROFILE SIZE: 20M - 220X100X4 - 3M UPRIGHTS User Manual
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X-CABLING PATTERNS
For Anchor Structures
20m Span
(220 x 100 x 4mm Profile)
2-28-05
EAVE
EAVE
EAVE
EAVE
EAVE
EAVE
PRIMARY
ROOF
CABLES “X”
SIDE CABLES
1
6
5
4
3
2
3
2
1
3
2
1
Following the same (6) open bay rule...
The 16th bay must be x-cabled.
And, the 23rd, etc.
6
5
4
3
2
1
6
5
4
3
2
1
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
X-CABLING GENERAL INFORMATION
:
NOTE: THIS INFORMATION IS CONSISTENT WITH CURRENT ENGINEERING DATA AND SUPERSEDES ANY
OTHER CABLING GUIDELINES DESCRIBED IN THIS INSTALLATION MANUAL.
For safety, X-cabling must be installed according to the above, engineered pattern. Unless it is properly cabled, the beam
system can fall in even moderate winds. It is the customer’s responsibility to follow the patterns shown above, which have
been approved by engineering analyses to ensure the safety of the structure. Secondary cables are added to the second
bay only and do not include side cables. The interior cabled bays may be positioned in any manner that avoids having (6)
consecutive side bays without cabling.
If the rafters of your 20m frame are spliced (keystoned) at 15m or 10m, the roof cables may be in two sections spliced end-
to-end. This 2-piece construction lets you remove the upper sections of the cables and use the lower sections on your 15m
or 10m frame. If your 20m frame is a reduction of a 25m frame, you can add 2.5m upper sections to the roof cables to
accomodate the full 25m span.
When installing x-cabling, it is best to attach all cables before tightening any of them. Then begin at ground level and tight-
en the cables in ascending order. The x-cabling should be used to establish a good vertical alignment of the beams either
by plumbing the beams or by using a careful visual sighting. Good alignment of the beams will improve the appearance of
the structure and make fabric installation easier.
SECONDARY
ROOF
CABLES “V”
SIDE VIEWS SHOWN
1. All 20m Structures require primary roof and side x-cabled end bays.
2. Structures with 6 or more total bays also require secondary x-cables in
the roof section only of the second bays. Viewed from above, these form
a “V” shape. (Structures with 5 bays or less do not require secondary
cables in the second bay.)
3. No more than 6 consecutive non-cabled side bays are permitted.
4. After the 6th open side bay, an additional x-cabled bay with full primary
roof cables and side cables must be added to the interior, so that no more
than (6) consecutive side bays are non-cabled.
ENGINEERING RULES FOR PROPER X-CABLING