HOW TO CALCULATE THE VOLUME OF BEAM FORMWORK
Calculating the volume of beam formwork is extremely necessary in the construction process, to ensure that the quality of the project after completion will be in accordance with the design as well as achieve the highest durability, while ensuring that the source of construction materials is used properly, saving costs. In the following article, we will guide you on how to calculate the volume of beam formwork in the most detail. Follow along with Hung Nghiep Phu!
1. What is beam formwork?
Formwork is a type of board that has been processed to create the shape of concrete structures. It has an extremely important function in shaping as well as the surface quality of concrete structures during construction. Formwork is made of many different materials such as wood, plastic, steel, aluminum, etc.
Beam formwork is a type of board designed with a structure that includes an open part through, the upper part is not closed, there are many supporting boards to limit the sides.
The material for making beam formwork is usually wood, made by using a brace on the top of a longitudinal wall to create the formwork.
Ván khuôn dầm giữ vai trò quan trọng trong thi công công trình
Beam formwork is divided into 2 parts:
- Beam wall formwork: For beams with small height, the corresponding support frame system will usually be arranged according to the structure to match the distance between the beam bottom support columns. As for beams with larger heights, when constructing, it is necessary to calculate to match the load-bearing capacity of the formwork.
- Beam bottom formwork: This formwork will be supported by a horizontal wall system along with the support columns at the bottom of the beam, ensuring that the distance between the beam bottom support columns must be calculated accurately, ensuring optimal load-bearing capacity, not exceeding the allowable deflection of the beam bottom formwork.
2. How to calculate beam formwork volume
Calculating the volume of beam formwork is extremely necessary during the construction process, to ensure that the quality of the completed project will be in accordance with the design as well as achieve the highest durability. In addition, calculating the volume aims to ensure that the source of construction materials is used properly, saving costs.
Calculating the beam formwork will include the beam wall formwork plus the beam bottom.
The calculation method is to peel off the beam wall formwork (the height is calculated from the bottom of the beam to the bottom of the floor). You can refer to the calculation below, the calculation can be done on Excel or specialized software to ensure the most accurate results.
- Calculating the volume of formwork for beam sections:
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Cách 1: Sván khuôn = Số lượng x Chiều dài dầm x (Bề rộng dầm + 2 x bề cao dầm)
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Cách 2: Sván khuôn = Số lượng x Chiều dài dầm x 2 x chiều cao dầm
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Calculate (remove) the volume of intersection formwork:
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Tính toàn bộ (tổng) diện tích xung quanh nút giao
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Sván khuôn nút = số lượng x (chu vi + bề rộng dầm) x chiều cao dầm max
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Subtract the space occupied by the beam ends (counted by beam type); Subtracted formwork area (beam type) = Number of sections x beam width x beam height.
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Subtract the beam intersection position (at the position where there are no columns).
Một ví dụ tính khối lượng ván khuôn dầm
3. When will the beam formwork be removed?
In construction, dismantling plays an important role; the project must ensure quality before dismantling can be carried out. In particular, the dismantling of beam formwork must be done at the right time; dismantling carefully, ensuring safety.
- You will proceed to dismantle the beam formwork; when the concrete reaches the required structural strength level according to the standard; can withstand the forces from its own weight; or other loads during construction.
- During construction, it is necessary to ensure that the beam formwork is flat, not deformed, and tight.
- The distance between the beam formwork and steel must be positioned with spacers; within the allowable range according to the standard.
- The height, width of the beam formwork and the finished concrete structure; must be ensured according to the given design.
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Source: Compiled from the Internet
