What Is Formwork?

Use of Materials in Formwork

• Form of wood.
• Type of plywood.
• Form of steel.
• The combined form of wood-steel.
• Strengthened concrete form.
• Plain concrete shape.

Types of Formwork

1. Timber Formwork.
2. Plywood Formwork.
3. Steel Formwork.
4. Aluminum Forwork.

1. Timber Formwork

• It ought to be well-seasoned
• It ought to be light in weight
• Timber must be easy to work with nails without splitting.
• It's supposed to be free from loose loops.

Advantages of Timber Formwork:

1. One of the advantages of formwork made of timber is that it can even make it perfect in any size you want.
2. Timber is extremely lightweight so it can be managed rapidly.
3. Timber is indeed a good thermal resistance, which helps prevent concrete harm in colder areas.
4. The fabrication process for that kind of sort of formwork is easily understandable, so it does not involve skilled labor.

Disadvantages of Timber Formwork:

1. Dry timber contains moisture from concrete, which also reduces the Discussing the disadvantages of formwork made of timber, we see that dry timber contains moisture from concrete, which also reduces the workability of the material.
2. Timber formwork should only be modified 5 to 6 times.
3. Timber with such a higher moisture content (<= 20%), wet concrete would then reduce as well as Cement slurry would then spill. 

2. Plywood Formwork

Advantages of Plywood Formwork

1. Plywood can be conveniently cut to the appropriate scale.
2. Plywood is sturdy, robust, and lightweight.
3. Plywood offers a flat concrete surface finish.
4. Plywood makes the formwork smoother and simpler.
5. Compared to Timber Formwork plywood, there is more repetition.

3. Steel Formwork

Advantages of Seel Formwork:

1. Steel panels are sturdy, robust, and also have a longer life cycle.
2. Steel panels can also be quickly assembled and removed at high speeds.
3. It is cost-effective if there is a significant volume of development going on.
4. Glass panels do not retain Concrete water or moisture.
5. This style of formwork does not shrink or warp.
6. The consistency of the concrete surface of the steel formworks is smooth and does not need further treatment.

Disadvantages of Seel Formwork:

1. It's very pricey compared to Plywood.
2. The steel sheet is very high in weight, it requires moving equipment to lift the panel.
3. It's limited to scale and form.

4. Aluminum Forwork

Advantages of Aluminum Formwork:

1. Aluminum Formwork improves the pace of manufacturing and reduces time and effort.
2. It provides a cleaner and improved surface finish.
3. Aluminum formwork could be re-used up to 250 cycles.
4. It's also cost-effective if a significant number of symmetrical buildings have to be constructed.

Disadvantages of Aluminum Formwork:

1. The original cost is higher due to the more costly aluminum formwork.
2. This type of formwork is cost-effective when used in a symmetrical design of construction.
3. It takes time to set up, initially.
4. Professional tasks are needed for alignment and maintenance purposes for this style of formwork.
5. Holes created by a wall tie during the formwork should be cracked correctly, otherwise, there will be a leakage problem in the future.

Requirements Good of Formwork

1. Considering materials for formwork or formwork materials, the material used in the formwork should be inexpensive and ideal for re-use many times.
2. The shape should be essentially waterproof so as not to spill and trap water from asphalt. Its shrinkage and swelling should also be minimal.
3. A load of concrete and live loads of pouring, vibration, compaction, and curing can be carried quickly.
4. It must have enough stiffness as well as stiffness to reduce deflection.
5. It should be low in weight as soon as possible, smooth, and easy to avoid.
6. All joints in the formwork should be evidence of leakage.

Code Provision for Standard Formwork

• General Requirements.
• Cleaning and Preparation of Forms.
• Strip Time.
• Procedure for Eliminating the Formwork.
• Camber.
• Tolerance.

1. General Requirements

2. Cleaning and Preparation of Forms

3. Strip Time

4. Procedure for Eliminating the Formwork

5. Camber

6. Tolerance

Formwork

What Is Formwork?

How Is Formwork Constructed?

Why Formwork Is Used in Construction?

Types of Formwork

• Traditional timber formwork. 
• Engineered Formwork System. 
• Re-usable plastic formwork.
• Permanent Insulated Formwork. 
• Stay-In-Place structural formwork systems.
• Flexible formwork.

Formwork in Construction

Concrete Formwork Materials

Types of Concrete Forms

1. Wood Forms for Concrete Slabs: Wood forms are the most basic and oldest of concrete formwork slabs and are still heavily used when constructing smaller structures.
2. Concrete Wall Forms: Pre-manufactured concrete wall forms are used for pouring walls or larger structures – such as when building piers or building foundations. Pre-manufactured wall systems are generally made out of engineered wood and reinforced with a metal frame, or consist of an entirely metal body.
3. Insulated Concrete Forms (ICFs): An insulated concrete form system consists of a hollow block of insulating materials that fit together and is filled with concrete, and further reinforced with steel.
4. Foam and Decorative Concrete Forms: Concrete has gone from being a construction component to being used inside the house, in fancy concrete countertops, and other decorative precast products. The growth in popularity of such items has led to new, innovative methods of concrete forming.

What Are the Functions of Formwork?

Column Formwork

How Is Column Measured in Formwork?

What Is the Purpose of Column Formwork?

What Is Column Starter?

Formwork Building

Metal Formwork for Concrete

Concrete Formwork

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