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Roc-Off
provides quality
James Thomas Engineering Trusses
for event production needs.
Ground
Support:
The system is simple, safe and very strong. It allows loads to be raised
up to height of 40'. The 15" ground support tower (2 tons pre-rigged
super truss) at 40' high consist
of a base, hinge section 2'6" tower, 5' tower, 3-10' tower roller beam,
and suitable sleeve block.
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12" x 12" General Purpose truss is manufactured from 2" dia
x 0.125" wall and 1" dia x 0.125"
wall 6082T6 or 6061T6 Aluminium tubing. Bolts are supplied for assembly
of truss elements. This
truss is ideal for conference, exhibition, and small venue work. By
incorporating suitable sleeve
blocks and towers, this truss can be used with our Ground Support System.
User Instructions
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15" x
15" General Purpose truss is manufactured from 2" dia
x 0.125" wall and 1" dia x 0.125" wall
6082T6 or
6061T6 Aluminium tubing. Bolts are supplied assembly of truss
elements. This truss is ideal for conference,
exhibition, and small venue work. By incorporating suitable sleeve
blocks and towers, this truss can be used with our
Ground Support System.
User Instructions
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Pre-Rig
truss is 30" x 26" in size. It is manufactured
from aluminium tube 6082-T6 with 2" x .125"
wall thickness for main tubes and 1" x .125" wall
tube for the diagonals. Each truss piece has 4 castor
wheels for easy maneuverability and bolts for the connection
of truss pieces.
Each truss is designed to carry 2 lighting bars complete with
lanterns. The lighting bars are stored
internally in the truss and can be lowered to the working position
when in use. This design reduces the
amount of space required for lighting and rigging in the truck.
Each truss is also designed to carry a
varying amount of lanterns, the 10' section carries 2 bars
of 8 lanterns, 7' 7"section carries 2 bars of 6
lanterns, 5' section carries 2 bars of 4 lanterns, and the
3' 9-1/2" section carries 2 bars of 3 lanterns. This
feature enables great flexibility in the truss design.
The Pre-Rig truss accepts a modified lighting bar which have
2 sleeved holes in them. The lighting
bars are located inside the truss by guide rods. In the storage
position the bars are securely held in the
truss by shank hooks. The whole system can be used with our Ground
Support System by using suitable
sleeve blocks and towers.
User Instructions
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The
12" square ground support tower. A system manufactured
with the purposeof providing a lifting medium for a variety of Thomas
trusses ranging from 12" x 12"through to heavy
duty truss.
The
towers will provide the necessary equipment to support
a truss rig in venues where the flying points are either
not
strong
enough, or in the right place. Each tower is capable of lifting
2 ton to a maximum height of 33 feet. The 2 ton weight must
include the self weight of the truss rig and the motors.
The truss rig
is raised and lowered by means of electric chain hoists.
The motor is rigged in the truss and works in double fall
due to
the chain being passed over the roller beam at the top of
the tower. The motor is then connected onto the other side
of the
sleeve block. Below, we list a brief description of the parts
which make up a 12" ground support tower.
The
base of the tower has 4 screw jack assemblies with 6" diameter
foot pads which are adjustable to enable leveling of the
tower. The base also incorporates 4 ball
castors which
allows the whole rig to be accurately positioned before the
tower is raised. Once the tower system is ready to be raised,
all the
screw jacks must be adjusted evenly and must take the load
off the ball castors.
The hinge section is designed to allow the towers to be
assembled horizontally at truss top level before being
swung and locked
in the vertical operating position. The tower sections
are manufactured from aluminum 6082-T6 2" x .157" thick
wall tube with 1" x .125" wall diagonals.
The
tower sections are connected together by Camloc quick
release bolts. The tower sections
are in modular form to allow 30" adjustments in
height up to a maximum of 33 feet. Once the tower height
has been
determined,
then the roller beam is fitted at the top of the tower.
The roller
beam accepts the chain from the chain hoist which is
run over the top of the roller beam and back down to
the other
side
of the sleeve block. The sleeve block is the interface
between the
truss rig and the towers. It is designed to create a
semi-rigid joint between the truss grid and the towers
by using 16 heavy duty 4" wheels to guide the rig
up each tower.
User Instructions
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The
15" square ground support tower is a system manufactured
for the purpose of providing a lifting medium for a variety
of Thomas trusses from, 20.5" x 20.5", Heavy
duty, Supertruss, and Pre-rig truss through to Roof systems.
The towers will provide the necessary equipment to support
a truss rig in venues where the flying points are either
not strong enough, or not in the right place.
Each
tower is capable of lifting 4 tons to a maximum height
of 40
feet. However, if you use a CM 1 ton hoist you will
only be able to lift 2 tons (ie. block and fall). The 4
ton
weight must include the self weight of the truss rig
and the motors. The truss rig is raised and lowered by
means
of electric chain hoists. The motor is rigged in the
truss and work in double fall due to the chain being passed
over the roller beam at the top of the tower. The motor is
then
connected onto the other side of the sleeve block.
Below,
we list a brief description of the parts which make up
a 15" ground
support tower.The base of the tower has 4 screw jack assemblies
with 6" diameter foot pads which are adjustable to enable
levelling of the tower. The base also incorporates 4 ball castors
which allows the whole rig to be accurately positioned before
the tower is raised.
Once
the tower system is ready to be raised, all the screw jacks
must be adjusted evenly and must take the
load off the ball castors. The hinge section is designed
to allow the towers to be assembled horizontally at truss
top level before
being swung and locked in the vertical operating position.
The tower sections wall tube with 1" x .125" wall
diagonals. The tower sections are bolted together to allow
30" adjustments
in height up to a maximum of 40 feet.
Once
the tower height has been determined, then the roller beam
is fitted
at the top of the tower. The roller beam accepts the
chain from
the chain
hoist which is run over the top of the roller beam
and back down to the other side of the sleeve block. The
sleeve block
is the
interface between the truss rig and the towers. It
is
designed to create a semi 16 heavy duty 4" wheels
to guide the rig up each tower.
User Instructions
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ROC-OFF
PRODUCTIONS
11220 Interchange Circle North
Miramar FL 33025
Superior
quality service for corporate presentations,
sporting events, concert tours and general productions.
Rentals stage-right stages, James Thomas load bearing roofs, ground supports,
risers, hoists, genies, truss, follow spots, rentals, scaffold, camera platforms, and ramps etc.
Toll Free: 1-877-9STAGES
Phone: 954-436-2118
Fax: 954-435-4105
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