Rice Lake SURVIVOR OTR Steel Deck - Manual (Page 6)

2 OTR Truck Scale Assembly Instructions
2.0 Installation
The modular sections of the OTR series truck scale are shipped pre-assembled and ready to be placed into position
on temporary setting blocks using a crane.
The deck modules are first connected and positioned on setting blocks. Next, the load cell mounts are installed and
anchored into final position.
Then, run the electrical wiring to the J-box through conduit. The weighbridge is lowered onto the load cell mounts.
All electronic equipment is then connected to finish the installation.
The general assembly order is summarized below:
1. Set deck modules into position on setting blocks.
2. Install load cell mounts in pockets and anchor bolts in baseplates.
3. Run cabling and connect electrical wiring to J-box.
4. Pour, finish, and seal (concrete deck).
5. Connect indicator and peripheral devices.
2.1 Foundation Slab Cure Period
Standard concrete reaches full strength after a 28-day curing period. At seven days, standard concrete reaches
approximately 75% of its maximum strength and can handle moderate loads.
Please refer to ACI318 for additional information regarding concrete curing requirements, and consult your
concrete vendor to discuss curing requirements based upon the mix used specifically for your site. Loading of a
slab before it reaches 75% of its maximum strength may cause permanent structural damage.
2.2 Assembly Time Estimates
When scheduling installation for a typical three-module, 70' truck scale, plan for a two-hour minimum crane rental
to place the modules into position. A two-man crew, aided by a crane operator, can unload modules from the truck
and place them into position in approximately 1 hour.
Mount and load cell installation will require approximately 3 – 4 hours. Electrical wiring is run through conduit
and can be done in approximately 2 – 3 hours.
For concrete deck scales, a concrete crew of three or four can normally pour, finish, and seal-cure the concrete deck
surface of a 70' scale in 2 – 3 hours. Final wiring connections can normally be completed the same day while the
concrete is curing. These estimated times may vary.
2.3 Recommended Equipment and Tools (Steel Deck)
• Crane with a minimum 8000 lb.* capacity
• Four chains or cables (8' minimum length each) with hooks or clevises
• 3/4" rotary hammer drill
• 3/4" x 24" masonry carbide bit
• One low-profile 4-ton bottle jack
• 5 1/2" setting blocks
• Various thickness shims to level scale
• Torque wrench to 100 ft-lb
• Socket wrenches to 1 1/2" (drive compatible with torque wrench)
• Box end wrenches to 1 1/4"
• Open end wrench set (7/16" – 1 1/4")
• 4' bubble level
• Small torpedo level
• Hammers, maul, pry bar
• Hand tools for pulling and connecting electrical wiring
* Typical single module weight of 70' x 11', three-module truck scale.