GOMACO Corporation

GOMACO Corporation manufactures curb and gutter machines, concrete slipform pavers, placer/spreaders, trimmer/placers, cylinder finishers, canal machinery and accessories ideal for any concrete construction project.

(Updated Weekly)


Paving 99 Lane Miles (159 km) and Counting Without a Single Grind The Cook County I-75 widening project is a $126 million project between Adel and Lenox, Georgia. It’s part of the state’s Fast Forward Program, a $15.5 billion initiative to expedite transportation projects. Part of that initiative includes widening I-75 from four to six lanes throughout parts of Georgia. The contractor used a GOMACO PS-2600 placer/spreader, four-track GHP-2800 slipform paver, four-track Commander III slipform paver, T/C-600 texture/cure machine, and a GOMACO Smoothness Indicator^® (GSI). The first 72 lane miles (116 km) were slipformed using stringline, and the Leica stringless system was used on the last 27 lane miles (43.5 km). The Scruggs Company took part in a voluntary trial using the zero-blanking band to test their CRC pavement smoothness, and the ride produced with their GHP-2800 with Leica stringless system. As part of the test, Scruggs profilographed four miles (6.4 km) of the new I-75 project. Their results were excellent. The overall PI averaged only 16.20, with numbers as low as 10.4. Read more about this project in the new issue of GOMACO World, Vol. 37, No. 1.

Photos By Dale Danielson, GOMACO Service Representative

Select any link below to find an authorized GOMACO distributor near you and the GOMACO District Manager for your area.
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GOMACO World Vol. 37, No. 1
		GOMACO Versatility Showcased On I-64 Project GOMACO Equipment Completes Multiple Applications In Missouri Download or read GOMACO World Vol. 37 No. 1, in PDF format

IDBI For Four-Track Commander III

Introducing the new GOMACO IDBI attachment... an independent unit providing dowel bar insertion behind the paver –

IDBI powered by its own C4.4, Tier 3, diesel Caterpillar® engine with 91 hp (68 kW) @ 2300 rpm.
Independent attachment is self-contained, self-powered, and inserts transverse joint bars in pavements up to 16 feet (4.88 m) wide.
Outriggers on the attachment have 48 inches (1219 mm) of stroke and can be hydraulically lowered and placed on the ground to support the full weight of the IDBI as it is attached to or detached from the paver.
CAN cable connects IDBI’s controls to controller on the Commander III and allows the two systems to communicate.
New adjustable-height bar extractors allow contractors to quickly and easily change the setup for different bar sizes for insertion requirements.
New IDBI tray is stronger, more compact and is designed to make width changes easier.
IDBI is equipped with the new GOMACO G+ control system, which features the same graphical display as the G22 controller, and has easy to learn, operator-friendly controls.
New piston-style legs utilize a round inner tube and a keyway for steering control.
Hydraulically telescoping leg pivots on the rear of the paver.

A New Paver For A New Kind Of Concrete

RTP-500
– Hopper working capacity of 4.75 yd³ (3.63 m³)
– Fast job-site mobility with friction drive, rubber track system
– High-speed transfer conveyor with increased throat clearance
– New hose hanger allows bucket to be removed for conveyor cleanout without disconnecting hoses

RCC Screed
– Telescoping screed for variable widths from 10 ft. (3.05 m) to 19 ft. 4 in. (5.89 m)
– Telescoping dual tamper bar
– Independent 14 inch (356 mm) dual augers
– Variable slab depth
– Hydraulic crown adjustment
– Hydraulic variable control of screed vibration
– Minimum side-clearance requirements
– Wearable items designed for fast replacement
– Removable covers and front strike-off wall allow easy maintenance
– Uniformity of density and strength
– Designed for harsh, zero-slump mixes

More on the RTP-500 rubber-tracked placer.

	Video Clip: RCC Screed (12.6 MB, 4 minutes long)
Windows Media Video (.wmv), requires Windows Media Player

Right-Side Or Left-Side Pour With The
New GT-3200

Right-side or left-side pour capable with new leg assembly mounting bracket on front and rear of machine

Modular-designed operator’s platform for paving in either direction and designed to provide safety with the machine operator having maximum visibility over the entire paving operation
New Tier III C4.4T Caterpillar® engine with 91 hp (67.9 kW) at 2300 rpm
New piston-style front leg with more steering torque and job-site mobility
Rear legs are three times stronger
Lightweight molded fiberglass shroud
High-volume charging auger with 38 percent faster auger speed
One of the fastest travel speeds in the industry for job-site mobility, with up to 125 fpm (38.1 mpm) auxiliary travel speed and 50 fpm (15.2 mpm) variable operating speed
High-volume conveyor for right-side or left-side pour
Hydraulically telescoping frame for right-track positioning
All-track drive
Vertical-lifting mold and trimmer
Slipforms 24 in. (610 mm) radius
Paves up to 5 ft. (1.52 m) wide
Capable of paving barrier up to 40 in. (1 m) tall

More on the GT-3200 Curb & Gutter Machine

GOMACO's New G22 Operating System

The G22 is a revolutionary software and operating system that combines intelligence with simplicity for GOMACO construction equipment. The new graphical display provides the operator with an easy to understand interface to the machine controls. The G22 operating system is exclusive to GOMACO products.

The G22 features a 6.5 in. (165 mm) anti-glare display screen with sensor-controlled backlight levels and the new TFT flat panel technology. It provides superior visibility under all operating conditions.
A dual language option is available on the G22.
The exclusive G22 provides push-button steering setup and trainable track steering when interfaced with GOMACO “smart” cylinders. Steering control has been simplified with the exclusive “smart” cylinders, used for dependable steering control feedback.
The optional transition software system allows the operator to automatically transition in and out of “catch” or “spill” gutter.
Advanced system diagnostics of the G22 automatically pinpoint and identify electrical circuit opens, shorts and fault codes to aid in troubleshooting.
The G22 has more room for future expansion.
Available as an option on the Commander III, GT-3600 curb and gutter machine, GT-3400 curb and gutter machine, GHP-2800 slipform paver, GP-2600 slipform paver, GP-4000 slipform paver, 9500 trimmer, and PS-2600 placer/spreader.

Skewed Tining Option Available For GOMACO Texture/Cure Machines

GOMACO’s T/C-400 and T/C-600 texture/cure machines are available with a skewed tining option. It allows the travel of the tining bars to run a skewed path, while the frame of the machine is square to the slab.
The sprockets, chains and mechanical items are off-the-shelf pieces that are easily replaceable. The tine rake on the texture/cure is gear driven, and as the rake travels across the slab, it moves longitudinally in a sliding mechanism through the mount. The final tining pattern is accomplished simply by sliding only the rake.
The sliding movement is controlled by a timing chain that runs from end panel to end panel. The direction of the skew can easily be changed by moving the timing chain either over or under the main drive sprocket on the upper carriage.
The skewed tining option can also be easily retrofitted to existing GOMACO texture/cure machines.

More information on the T/C-400 and T/C-600 texture/cure machines

	Video Clip: Skewed Tining For Texture/Cure Machines (4.1 MB, 77 seconds long)
Windows Media Video (.wmv), requires Windows Media Player

Standard Features For GT-3600

Hook-And-Go Mold Mount System

Travel speed has nearly doubled from 66 fpm (20 mpm) to 125 fpm (38 mpm) with the two-speed track system.

Sensor arms and mounts which are more durable, lighter weight and easier to manipulate.
Hook-and-Go mold mount system has no pins or latches and makes it quick and easy to change molds. Simply drive the GT-3600 up to the mold and hook the mount to a special attachment plate. The operator hydraulically lifts the mold and goes back to work slipforming the project.
Available with the G22 control system.
Legs have been increased in diameter by 15 percent, providing the same quality and durability as the Commander III legs.
Push-button steering control setup with "smart" cylinders.

More on these features and on the GT-3600

	Video Clip: Hook-and-Go (2.6 MB, 60 seconds long)
Windows Media Video (.wmv), requires Windows Media Player

V2 Mold For Quick & Easy Width Changes

Hydraulically adjustable dual mold for various paving widths
On-the-go paving of tapered slabs
Separate mold control for the right and left side
Features dual PTAs for crown height adjustment
Telescoping plow framework to accommodate width changes
Available with a curb profile on one or both sides for municipal paving
Designed to adapt to virtually any paver/prime mover in the field today
GOMACO is developing programmable width changes through our G21 controller and other possibilities for the new V2

GSITools™ Provides Grade Analysis Before Paving

The GSITools™ software application performs post processing of exported GSI® trace data and provides a Grade Analysis Tool, which can build a profile of the grade and estimate the concrete yield of the project. The software also provides a cut-and-fill report for final grade preparation. The software provides a grade analysis report, a project trace selection, shows project parameters, and displays details on a table and graph.

More on the GSI (GOMACO Smoothness Indicator)

24-Hour Emergency Service Assistance At 712-364-4716

A representative from the GOMACO Service Department is now available 24 hours a day. If you have an after-hours emergency, dial 712-364-4716, and you will be connected with the GOMACO service representative on call. During normal business hours, simply call the Service Department for assistance.

The All-American Canal: Slipforming 72 Feet (21.9 m) Wide...

The All-American Canal lining project through the Imperial Valley in California called for a new 23 mile (37 km) long concrete-lined canal to be built parallel to the existing unlined canal. Coffman Specialties would pave the six mile (9.7 km) long Reach Two and four mile (6.4 km) long Reach Three of the project. The proposed lined sections would have slopes of 1.75:1 and 2:1, a bottom width of 50 feet (15.2 m) and a top width spanning 150 feet (45.7 m).

Slope widths would be variable, between 37.3 feet (11.4 m) and 45.7 feet (14 m). The concrete lining itself would be four inches (102 mm) thick.

The first piece of equipment was the canal paver. A GOMACO GP-4000 prime mover, set on top of a ten foot (3 m) tall framework, provides the power plant and control system for the paver. The mold sections are a 5000 series paving mold which were slightly modified. The machine is mounted on four tracks that are 13 feet, nine inches (4.2 m) long, 30 inches (762 mm) wide and 40 inches (1016 mm) high.

The second piece of equipment GOMACO built for the All-American Canal paving train is the water stop machine. It follows directly behind the canal paver inserting the transverse water stop material every 15 feet (4.6 m).

The work bridge is the third piece of equipment in Coffman Specialties’ canal paving train. It gives finishers a platform to work from and is used to cure the finished canal. A curing mechanism is mounted to the back of the work bridge to apply the white curing compound.

Click here to learn more about the All-American Canal project.

Click here to read about the project in GOMACO World Vol. 36, No. 2.

Removable Auger/Strike-Off For Width Changes And Shipping

A special request by a customer has led to a GOMACO innovation, a paving mold with a detachable telescoping auger/strike-off. This innovation gives contractors the benefit of a mold that can be either an open front or auger/strike-off. It can then easily be broken down with removable and telescoping sections.

The auger/strike-off moves independently with hydraulically-adjustable mounts on the front of the mold. A self-supporting transition adjuster (TA) is standard to allow for crowning in the pavement.

Both the strike-off and auger have six feet (1.8 m) of telescoping capabilities to aid in changing paving widths. When paving widths need to be changed, the contractor only has to add or remove a section of the paving mold and then telescope the auger and strike-off in or out depending on the needed width. The telescoping auger incorporates bolt-on flighting to accommodate the changing widths.

Along with giving the contractor some extra versatility on their pavers, the detachable telescoping auger/strike-off can ease transportation. The auger/strike-off can be detached from the front of the mold and the wings on the sideplates can be folded in to allow the paver, with the mold still mounted underneath it, to be transported on one truck under 12 feet (3.7 m) wide.

The new design is based on a 5000 series open-front mold, allowing such molds to be retrofitted in the field.

Click here to view a graphic of the auger/strike-off mold.

Half-Width Placing With An RC Conveyor

Here’s an economical system for quick discharge from ready-mix trucks. The RC Conveyor for half-width placing is a powered system with a unique divert-a-car for placing the concrete across the width of the slab. This has become a popular product with the need to get concrete trucks on and off the job site without piling the material. The RC Conveyor can reduce the number of trucks necessary, depending on job-site logistics.

More on the RC Conveyor Half-Width Placing Application and the RC Conveyor

Place Stone Base Material With The PS-2600

A PS-2600 placer/spreader was recently equipped with a rock hopper to place stone base material. It was developed for a customer who needed a machine that could carry base material, rather than pushing a pile like regular placer/spreaders. After the material placement, the machine can be converted back to a traditional PS-2600 by removing the rock hopper and attaching the concrete strike-off and belt.

More on the PS-2600 placer/spreader and the new rock hopper for placer/spreaders

GOMACO equipment will slipform concrete streets and highways, airport runways, curb and gutter, sidewalks and recreational trails, safety barrier, bridge parapet and irrigation canals.

Support equipment includes grade trimmers, concrete placers, concrete placer/spreaders and texturing and curing machines. We also offer equipment to finish flat slabs, bridges, and slopes.

GOMACO will consult on equipment for large or unique concrete paving projects. Our products are offered through a worldwide distributor network for local sales, parts and service expertise.