Concrete Forms for Flatwork
Curb and Gutter Forms
Preferred by leading contractors for over 100 years, Metaforms® offer a wide range of adaptability plus many time and labor saving features. Steel flatwork concrete forms are used by concrete contractors for the following applications: driveways, sidewalks, patios, parking lots, commercial floors, and lightweight paving. In comparison with wood forms, Metaforms® not only greatly reduce setting and stripping costs and completely eliminate costly, recurring lumber bills, but they represent an investment in equipment which will give many years of rugged, dependable service.
Save Time...Save Labor...Save Lumber with Metal Concrete Forms
Curb and gutter formwork utilizes the standard Metaforms® in conjunction with division plates, top spacers and face forms to create a wide variety of cross sections. Base-LineTM or Slim-Line® concrete forms can be used as the "back form" or the "front gutter form".
Metaform® curb face concrete forms, available in any of the six basic styles illustrated, are an essential part of the form equipment necessary for profitable construction of quality curb and gutter work. These concrete forms not only produce curb faces which are accurate and uniform, but they greatly reduce the time and labor ordinarily spent on finishing.
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B: Front Gutter Form
C: Face Form
D: Division Plate
E: Curb Top Spacers
F: Steel Form Stake
Properly selecting the correct face form to match the specification along with the contractor's need is crucial. Face forms can be made to match existing forms or to meet a new specification. Several face form configurations are shown below.
|Single Radius with batter||Single Radius- vetical||Straight Face with Batter||Straight Face-Vertical||Double Radius with Batter||Double Radius Vertical|
Division plates have two roles. One is to put all forms into proper configuration and the other is to allow for proper scoring of the concrete. Typically, division plates are used every 10 feet. When setting radius curb & gutter, three intermediate, short skeleton plates will be needed to maintain consistent and even forming. Full-depth division plates provide full depth joints. Skeleton division plates create a continuous curb with partial scoring for "controlled cracking". Short and Short Skeleton division plates provide auxiliary face form support at intermediate positions. The diagram below shows the three most often used division plates.
There are many different configurations and shapes that can be made with curb & gutter concrete forms. With all curb & gutter and curb-only forms, basic shapes of the curb cross section look similar. However, almost all states and municipalities have their own specifications. Vertical back form, front gutter form and fully-battered form heights can be achieved either by using one full-height form or by stacking two forms. Partially and fully battered forms are typically made full-height and have the specified batters bent into the form.
Metaform® radius curb and gutter concrete forms provide a fast, economical means of forming corners and serpentine work. Six stake pockets per 10' section afford maximum vertical rigidity and assure ample staking. When necessary, forms can be suspended entirely independent of the support of the subgrade. Readjustment to grade requires merely unlocking the wedge, raising or lowering the form to the proper elevation, and relocking the wedge. Overhead hangers are an excellent option when the contractor is worried about concrete cracking that can occur wherever division plates are used. Hangers put face forms in proper location without having anything in the concrete. These rigid, easily attached, quickly stripped units assure perfect face form positioning, provide ample space beneath the cross-members for finishing operations.
Optional Overhead Hanger
Heltzel Style Curb Concrete Forms
Metal Forms straight Heltzel style curb forms are available with the option of 2 inch or 3 inch top and bottom rails. The Heltzel concrete forms are engineered to match and interchange with older versions of Heltzel Curb forms. Heltzel type curb forms are 10' long, unless otherwise indicated. Curb heights range from 4 inch up to 24 inch high.