Chapter 7 - Concrete form design

Question 1

What is formwork?

Answer 1

Temporary or permanent moulds into which concrete is poured

Question 2

What is falsework?

Answer 2

Any additional temporary bracing that serves to support the formwork & permanent structure until it is able to support its own weight.

Question 3

What is the cost of formwork in concrete construction? (%)

Answer 3

It’s between 40%-60% of the cost

Question 4

Which materials are used for prefabricated modular forms

Answer 4

Steel or aluminum

Question 5

Why Plywood is extensively used for site-constructed forms?

Answer 5

• Economical
• Available in large panels & variety of thickness
• Predictable strength

Question 6

Explain the difference between conventional and industrialized formwork

Answer 6

Conventional: assembled in site from standard new elements for each use and disassembled after each use
IIdustrialized: mostly factory-fabricated products & used many times as one unit without being disassembled after each use

Question 7

What do design principles involve? What are the two main steps?

Answer 7

The design of formwork will usually involve the design of the wall, column, or slab forms constructed of wood or plywood

Two main steps:
1. Calculate the Design Load (Live & Dead Loads)
2. Analyze primary form components