Formwork A temporary framework of wooden boards or metal rails set up along the perimeter of a work area to contain and shape wet concrete.
Formwork acts as the structural mold for your new sidewalk. It must be precisely leveled and staked to ensure the finished concrete has the correct thickness and pitches perfectly toward the curb. NYC DOT specifications dictate how long the formwork must remain in place to support the weight of the wet, curing concrete without bowing or collapsing.
Frequently Asked Questions About Formwork
What is formwork?
A temporary framework of wood boards or metal rails set around the work area to contain and shape wet concrete.
Why is form setting so important?
The forms determine finished thickness, edge alignment and the pitch toward the curb. Errors here appear permanently in the finished slab.
How are forms secured?
They are staked and braced so they hold line and grade under the weight and pressure of the wet concrete without bowing.
How long do forms stay in place?
Until the concrete has gained enough strength to support itself, typically a day or two depending on mix and weather.