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As everyone knows, nothing can be accomplished without rules and regulations. This saying primarily applies to us humans. But do materials and equipment themselves have their own unique standards when being used? The answer is yes. Take, for example, construction formwork—there are definitely specific standards for its use, mainly to ensure the personal safety of users and those around them. So what exactly are these usage standards? Let’s find out together with a Guangxi-based formwork manufacturer. I. Quality Requirements and Inspection & Acceptance for Formwork Construction Projects Basic Provisions 1. Formwork and its supporting structures shall be designed based on factors such as the structural form of the project, magnitude of loads, type of foundation soil, construction equipment, and material supply. The formwork and its supporting structures must have sufficient load-bearing capacity, rigidity, and stability to reliably withstand the weight of poured concrete, lateral pressure, and construction loads. 2. Before pouring concrete, the formwork project must undergo acceptance inspection. During formwork installation and concrete pouring, the formwork and its supporting structures should be closely monitored and maintained. In case of any abnormal conditions, they should be addressed promptly according to the construction technical plan. 3. The sequence for removing formwork and its supporting structures, as well as the corresponding safety measures, shall be carried out in accordance with the construction technical plan. General Items 1. Formwork installation shall meet the following requirements: (1) The joints of the formwork shall not leak slurry. Before concrete pouring, wooden formwork should be thoroughly wetted with water, but there shall be no standing water inside the formwork. (2) The contact surfaces between the formwork and concrete shall be cleaned thoroughly and coated with a release agent, but the release agent must not affect the structural performance or interfere with decoration work. (3) Before concrete pouring, all debris inside the formwork must be completely removed. (4) For exposed-concrete projects and decorative concrete projects, formwork that can achieve the desired design effect must be used. 2. The ground surface and base molds used as formwork must be smooth and clean, and shall not exhibit subsidence, cracks, sanding, or bulging that could affect the quality of the components. 3. For cast-in-place reinforced concrete beams and slabs with spans of 4 meters or more, the formwork shall be cambered according to design requirements. When the design does not specify particular requirements, the camber height should ideally be between 1/1000 and 3/1000 of the span. 4. Embedded parts, reserved holes, and reserved openings fixed to the formwork must not be omitted and shall be securely installed; their deviations must comply with the provisions in Table 1-1. II. Selection and Control of Raw Materials 1. Formwork Selection (1) Types of Formwork and Quality Assessment Plywood used as concrete formwork has the following advantages: (1) Large panel size, light weight, and smooth panel surface. This reduces installation workload, saves on-site labor costs, and also cuts down on expenses for finishing exposed concrete surfaces and grinding joint seams. (2) High load-bearing capacity, especially after surface treatment, it exhibits excellent wear resistance and can be reused multiple times. (3) Lightweight material—18mm-thick wood plywood weighs only 50 kg per square meter, making transportation, stacking, use, and management of the formwork quite convenient. (4) Good thermal insulation performance, preventing rapid temperature changes and aiding in concrete insulation during winter construction. (5) Easy to cut and saw, allowing it to be easily shaped into various forms. (6) Easily bent and formed according to project needs, making it ideal for curved surface formwork. (7) Most suitable for use as formwork for exposed concrete. Wood plywood can be classified by species into softwood plywood (such as pine, yellow pine, larch, red pine, etc.) and hardwood plywood (such as oak, birch, ash, boxwood, paulownia, etc.). By water resistance, plywood is divided into four categories: Class I—High water resistance and good boiling-water resistance; uses phenolic resin adhesive (PF), mainly for outdoor applications. Class II—Water-resistant and moisture-proof plywood; uses melamine-modified urea-formaldehyde resin adhesive (MUF), suitable for high-humidity environments and outdoor use. Class III—Moisture-proof plywood; uses urea-formaldehyde resin adhesive (OF), intended for indoor use. Class IV—Not water-resistant or moisture-proof; bonded with blood meal or soybean flour; production has been discontinued in recent years. The wood plywood used for concrete formwork belongs to Class I plywood, which features high weather and water resistance, using phenolic resin adhesive. It is mainly made from tree species such as klon, abietin, willow, birch, pine, Yunnan pine, and larch. After reading the above introduction, do you now have a better understanding of the standards involved in the use of construction formwork? We hope this information has been helpful to you. Liuzhou Construction Formwork, Guangxi Construction Formwork, Guangxi Formwork, Guangxi Formwork Factory, Liuzhou Formwork Factory—Construction Formwork Factory (Disclaimer: This article is sourced from the internet and does not represent the views or stance of this website. Copyright belongs to the original authors and sources. If there is any infringement or objection, please contact us for correction or deletion.)