Lecture 13- Concrete Formwork Systems

Lecture 13- Concrete Formwork Systems - C E M 6 2 C o n s t...

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Unformatted text preview: C E M 6 2 C o n s t r u c t i o n M e t h o d s CEM 602 Construction Methods Lecture 13 Concrete Formwork Systems 1 L e c t u r e 1 3- C o n c r e t e F o r m w o r k S y s t e m s C E M 6 2 C o n s t r u c t i o n M e t h o d s Background L e c t u r e 1 3- C o n c r e t e F o r m w o r k S y s t e m s 2 C E M 6 2 C o n s t r u c t i o n M e t h o d s Classification of Formwork Formwork for concrete can be classified into two main types: conventional form work and industrialized formwork Conventional formwork is assembled in situ from standard elements new for each use and is disassembled after each use Industrialized forms are mostly factory- fabricated products and are used many times as one unit without being disassembled and assembled again for each use L e c t u r e 1 3- C o n c r e t e F o r m w o r k S y s t e m s 3 C E M 6 2 C o n s t r u c t i o n M e t h o d s Classification of Formwork L e c t u r e 1 3- C o n c r e t e F o r m w o r k S y s t e m s 4 C E M 6 2 C o n s t r u c t i o n M e t h o d s Responsibility of Project Engineers Engineering design of conventional form work for simple elements Selecting conventional formwork members based on engineering principles Selecting the desired industrialized forming system to suit the project's construction method and the lifting equipment that will be used Studying available sizes and calculating the number and sizes of pieces needed according to the geometry of the concrete L e c t u r e 1 3- C o n c r e t e F o r m w o r k S y s t e m s 5 C E M 6 2 C o n s t r u c t i o n M e t h o d s Responsibility of Project Engineers Providing construction data such as the desired rate of concrete placement, to the formwork designer Coordinating the transport to the site, storage, and multiple lifting for erection and dismantling of the forming system Monitoring the erection of the formwork to ensure compliance with the designer's shop drawings and specifications (conventional form work) or with the supplier's plans and instructions (forming systems) L e c t u r e 1 3- C o n c r e t e F o r m w o r k S y s t e m s 6 C E M 6 2 C o n s t r u c t i o n M e t h o d s Responsibility of Project Engineers Performing a quality inspection of formwork elements and accessories Inspecting critical construction details Inspecting the formwork during concrete placement and monitoring the concreting process Providing guidance as to and monitoring of stripping limes of various concrete elements, to comply with the standards and/or results of concrete strength testing. L e c t u r e 1 3- C o n c r e t e F o r m w o r k S y s t e m s 7 C E M 6 2 C o n s t r u c t i o n M e t h o d s Formwork Economics Formwork accounts for 30 to 70% of the construction cost for concrete structure building frames Formwork cost is principally comprised of material and labor cost Industrialized forms may also have transportation and lifting-equipment costs Some contractors charge lifting equipment...
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This note was uploaded on 03/17/2012 for the course CEM 602 taught by Professor Amrkandile during the Spring '10 term at American University in Cairo.

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Lecture 13- Concrete Formwork Systems - C E M 6 2 C o n s t...

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