FORMWORK• ACI 347, Chapter 1, Section 1.2Formwork – total system of support for freshly placed concrete, including the mold or sheathing that contacts the concrete and all supporting members, hardware, and necessary bracing.• CDOT, Section 601.11Falsework is defined as any temporary construction used to support vertical loads for a structure until it becomes self-supporting. Formwork is the temporary structure or mold used to retain plastic or fluid concrete in its designated shape until it hardens.
Formwork v. Falsework• ACI - Formwork includes Falsework• CDOT – Formwork and Falsework are separate• Formwork is the “Jello” Mold that holds fresh concrete• Falsework supports formwork and other structures (such as precast girders)
Formwork – the “Jello Mold”There are two types of Formwork: 1. Vertical Forms 2. Horizontal FormsVertical Forms are used to hold pressureHorizontal Forms are used to hold weight
Vertical FormsVertical Forms are used to form: Walls Columns Piers Abutments Beamsides Other Vertical Concrete Surfaces
Success?Success is measured by how well the JelloMold conforms to the owner’s expectations.Is it the right shape?Are the length, height and width correct?Is it within tolerance?Is it in the right location?