Versatile, Cost Effective and Simple
  • Rasto has few pieces, allowing for a quick handset or reconfiguration into a gang forming system.
  • Large standard panels (up to 8'x11' nominal) improve erection times.
  • Self-aligning clamps form gangs, saving time and reducing the possibility of shortages.
  • HDO plywood face provides a good concrete surface.
  • Hot-dipped galvanized metal frames resist rust.
System Design  
The Rasto concrete form system is a modular design suitable in hanset or gangform applications.


Modular versatility

Panels come in 27 different sizes and can be combined vertically and horizontally to create almost any dimension. A full line of accessories and harware makes configuring gangs and setting details quick and simple.

Aligning Panel Clamps eliminate the need for walers even when moving large gangs. The Adjustable Aligning Clamp, Outer Corner Clamp and Strongback Clamp make panel connections for common details as fast and easy as standard panel connection.




System strength

Rasto panels are manufactured with rust resistant hot-dipped galvanized steel frames. The form face is a ½” plywood with a phenolic resin overlay on both sides to provide a high quality concrete finish and extended panel life.

Panels, clamps and ties combine to create a strong system that can withstand 1250 psf of concrete pressure. Rasto panels are clamped together to create almost any wall or column dimension. They can also be stepped to accommodate uneven footing or slab elevations.






Panels  




Panel sizes

Rasto panels come in heights from 300 cm to 150 cm (9’-10” to 4’-11” nominal). Widths from 90 cm to 30 cm (36” to 12”) are available in most heights.







Handset capability

The 270 cm x 75 cm (8’-10” x 2’-6”) panel and smaller sizes are also frequently utilized in hanset applications. The panels quickly clamp together to create one of the fastest setting handset systems.
Clamps and Connectors  

Aligning Panel Clamp

In one operation, the Aligning Panel Clamp aligns panels and clamps them into position with flush, tight joints. It straddles the panel crossmembers to provide vertical alignment and eliminates the need for walers in most common applications.

Adjustable Aliging Clamp

The Adjustable Aligning Clamp spans fillers up to 15 cm (6”) wide and provides support for extension panels.

Outer Corner Clamp

The outer Corner Clamp connects two panels to form a 90 degree outside corner.

StrongBack Clamp

The Strongback Clamp quickly stiffens and aligns tall Rasto gangs with stacking panels. A Strongback End Clamp attaches to the Strongback Clamp for tall “face up” gang assembly.

 

 






Nuts and Bolts

The Centering Tension Bolt Nut 100 centers itself evenly in the Rasto profile. It is used to connect panels to hinged corners, mounting bulkheads and other applications. The Rasto Accessory Bolt utilized with Outside Conversion Corners, Filler Angles and Column Hinges. The Centering Tension Bolt distributes loads evenly across the Rasto

Waler Spanner

The Waler Spanner(30) with the Waler Spanner Tension Bolt connect Multi-Purpose Walers and Adjustment Walers to panels.


Corners  

Most Rasto corners are formed using standard Rasto panels, Inner Corner and Outside Corner Clamps. Other components provide additional form layout options that create an adaptable, productive system.

Inner Corner

The 30 cm (12” nom.) wide inner Corner is available in 150 cm, 270 cm, and 300 cm heights. Unlatching the stiffener flexes the corner, allowing it to be reduced by approximately 2 degrees to aid stripping.

Outer Corner Clamp

The Outer Corner Clamp connects the frames of butting panels to create a 90 degree outside corner. The clamp straddles the panels at crossmember locations for rigidity.

Hinged Corners

The 15 cm (6” nom.) wide Hinged Corner creates corner angles of 90 degrees to 300 degrees. The 30 cm (12” nom.) wide Hinged Corner forms corner angles from 60 degrees to 150 degrees. Both are available in 150 cm, 270 cm, and 300 cm 94’-11”, 8’-10” and 9’-10”) heights.


Three-Piece Stripping Corner

The inside stripping corner allows core walls to be set and stripped without disassembling the gangs. The corner consists of three pieces which partially disconnect and slide inward with ratched turnbuckles at the top and bottom of each gang.

Outside Conversion Corner

The Outside Conversion Corner converts metric panel dimensions to U.S. (Imperial) column widths. It requires the Accessory Bolt and Centering Nut to complete the attachment.

Column Hinge

The Column Hinge allows Rasto column form halves to fly as a single unit. It requires two centering Nuts to complete the attachment.

Ties and Accessories  













Rasto panel design includes reinforced tie holding bays located next to the edge profiles. If a tie is not inserted in a holding bay, a Panel Plug is inserted to fill the tie hole. One tie nut typically supports adjacent panels.

Taper Ties

Taper Ties are 15 mm (5/8”) diameter and come in lengths to accommodate wall diameters from 7” to 39”. The same size standard Tie Nut is used on both ends of the Taper Tie to simplify harware needs.

She Bolts

These reusable outer tie units are used with a cut-to-size 5/8” inner unit and standard Tie Nuts.

Tie Rods

The reusable Tie Rods are available in 6” increments and are used in combination with Sleeves and Cones. Sleeves are cut-to-length and Cones are added to ensure the proper spacing between the two erected forming faces. Tie Sleeve Plugs close the openings left in the wall.

Tie Holding Clip

The Tie holding Clip holds the Tie Rod away from the form in “dry tie” applications (i.e.:top ties and bulkheads).

Tie Nuts

The Swivel Tie Nut (85) pivots up to 10 degree for battered walls and other applications. It includes a swivel bearing plate. The standard Tie Nut does not pivot, but is used in most applications.

Frame Tie Plate

The Frame Tie Plate is used at panel corners to cover the joint where all four corners meet and provide support for certain applications.

Tie Nut Ratchet

The Tie Nut Ratchet is utilized to install and tighten tie nuts and hardware.

Walers

Two Hinged Waler 170s are required to form a complete hinged waler assembly for non-rectangular corners. Each hinged Waler 170 includes a Pivot Pin.

An Adjustment Waler 120 provides length adjustments and is typically used for creating bulkheads.

The multi-Purpose Waler 100 is used like the Adjustment Waler 120, and can be used to create tension resistant filler alignment. It also features holes for nailing.

Lift Brackets

The RTL Lift Bracket has a maximum load capacity of 1,100 pounds. A minimum of two lift brackets are required to lift a gang of up to 265 sq. ft.

Note: The actual total area will depend on the total weight of the panels and hardware.

Caution: The angle for the attached lifting lines must be greater than or equal to 60 degree from horizontal. If they are less than 60 degrees, or if more than two brackets are used, a spreader beam must be used.

Column Lift Brackets can be used with Outside Conversion Corners to provide convenient lifting points.

Core Forming

Shaft Spindle Brackets provide attachment points for spindle braces commonly used to retract interior forms in core wall forming.

Leveling Devices provide level adjustment of core formwork prior to placing concrete. They require 1.90” diameter screw jacks.