Aci 347r14 Guide To Formwork For Concrete Pdf -
Formwork Design and Construction The formwork system should be designed to support all loads that will be imposed on it during construction. The primary loads to be considered are:
Dead load : The weight of the formwork itself, including the weight of the concrete, reinforcement, and any other materials that will be placed on the formwork. Live load : The weight of workers, construction equipment, and any other external loads that will be applied to the formwork during construction.
The formwork design should also consider the following factors:
Concrete pressure : The pressure exerted by the concrete on the formwork, which can be calculated using the following equation: $$P = \gamma h$$ where $P$ is the concrete pressure, $\gamma$ is the unit weight of the concrete, and $h$ is the height of the concrete. aci 347r14 guide to formwork for concrete pdf
Formwork stability : The formwork should be designed to resist overturning, sliding, and buckling.
Formwork Materials The guide provides information on the materials that can be used for formwork, including:
Plywood : A common material used for formwork, available in various thicknesses and sizes. Steel : Can be used for formwork, particularly for high-rise or large-scale construction projects. Aluminum : Lightweight and corrosion-resistant, often used for formwork in building construction. Formwork Design and Construction The formwork system should
Formwork Construction and Safety The guide emphasizes the importance of proper formwork construction and safety practices, including:
Proper bracing and support : Ensuring that the formwork is properly braced and supported to prevent collapse. Regular inspections : Regularly inspecting the formwork to ensure that it is in good condition and free from defects.
You can download the ACI 347R-14 guide from the American Concrete Institute (ACI) website or other online sources. The formwork design should also consider the following
The ACI 347R-14: Guide to Formwork for Concrete is a primary industry standard that outlines responsibilities and best practices for the safe and economical design and construction of formwork. It prioritizes three main objectives: safety , quality , and economy . Key Feature Overview The guide provides comprehensive guidance for both engineers and contractors across several critical areas: Design Criteria: It establishes standards for horizontal and vertical loads, including updated lateral pressure provisions for newly placed concrete and clarified wind load magnitudes. Safety & Stability: The document includes detailed safety factors for formwork accessories and specific requirements for shoring, reshoring, and lateral bracing to prevent structural failure. Contractual Guidance: It defines the information that should be included in contract documents by the engineer/architect to ensure the contractor has sufficient data to design effective formwork. Material Standards: Updated chapters reflect modern material design specifications for wood, steel, and other formwork materials. Special Construction: Dedicated sections cover complex scenarios like architectural concrete , bridges, mass concrete, underground work, and special methods such as slipforming and tremie concrete. Document Structure The guide is organized into chapters that address the lifecycle of formwork operations: Guide to Formwork for Concrete
The ACI 347R-14: Guide to Formwork for Concrete is a comprehensive technical document published by the American Concrete Institute (ACI) that outlines best practices for the design, construction, and materials used in concrete formwork. This guide serves as a critical reference for achieving the primary objectives of safety, quality, and economy in concrete construction projects. Core Objectives Safety : Ensuring the formwork can support all vertical and lateral loads, including the weight of fresh concrete, workers, and equipment. Quality : Controlling the size, shape, and alignment of the concrete to meet specified project tolerances. Economy : Promoting cost-effective design and reuse of formwork materials. POPULAR MATERIALS USED FOR FORMWORK - Fomex Group