The Design of a Semi-Prefabricated LVL-Concrete Composite Floor

This paper describes the design of a novel semi-prefabricated LVL-concrete composite floor that has been developed in New Zealand. In this solution, the floor units made from LVL joists and plywood are prefabricated in the factory and transported to the building site. The units are then lifted onto...

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Main Authors: David Yeoh, Massimo Fragiacomo
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Advances in Civil Engineering
Online Access:http://dx.doi.org/10.1155/2012/626592
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author David Yeoh
Massimo Fragiacomo
author_facet David Yeoh
Massimo Fragiacomo
author_sort David Yeoh
collection DOAJ
description This paper describes the design of a novel semi-prefabricated LVL-concrete composite floor that has been developed in New Zealand. In this solution, the floor units made from LVL joists and plywood are prefabricated in the factory and transported to the building site. The units are then lifted onto the supports and connected to the main frames of the building and to the adjacent units. Finally, a concrete topping is poured on top of the units in order to form a continuous slab connecting all the units. Rectangular notches cut from the LVL joists and reinforced with coach screws provide the composite action between the concrete slab and the LVL joists. This system proved to be an effective modular solution that ensures rapid construction. A design procedure based on the use of the effective flexural stiffness method, also known as the “gamma method” is proposed for the design of the composite floor at ultimate and serviceability limit states, in the short and long term. By comparison with the experimental results, it is shown that the proposed method leads to conservative design. A step-by-step design worked example of this novel semi-prefabricated composite floor concludes the paper.
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spelling doaj-art-0c210a196c2a4aae952a9627aa4184872025-02-03T07:23:52ZengWileyAdvances in Civil Engineering1687-80861687-80942012-01-01201210.1155/2012/626592626592The Design of a Semi-Prefabricated LVL-Concrete Composite FloorDavid Yeoh0Massimo Fragiacomo1Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400 Batu Pahat, MalaysiaDepartment of Architecture, Design and Urban Planning, Faculty of Architecture, University of Sassari, Palazzo del Pou Salit, Piazza Duomo 6, 07041 Alghero, Italy This paper describes the design of a novel semi-prefabricated LVL-concrete composite floor that has been developed in New Zealand. In this solution, the floor units made from LVL joists and plywood are prefabricated in the factory and transported to the building site. The units are then lifted onto the supports and connected to the main frames of the building and to the adjacent units. Finally, a concrete topping is poured on top of the units in order to form a continuous slab connecting all the units. Rectangular notches cut from the LVL joists and reinforced with coach screws provide the composite action between the concrete slab and the LVL joists. This system proved to be an effective modular solution that ensures rapid construction. A design procedure based on the use of the effective flexural stiffness method, also known as the “gamma method” is proposed for the design of the composite floor at ultimate and serviceability limit states, in the short and long term. By comparison with the experimental results, it is shown that the proposed method leads to conservative design. A step-by-step design worked example of this novel semi-prefabricated composite floor concludes the paper.http://dx.doi.org/10.1155/2012/626592
spellingShingle David Yeoh
Massimo Fragiacomo
The Design of a Semi-Prefabricated LVL-Concrete Composite Floor
Advances in Civil Engineering
title The Design of a Semi-Prefabricated LVL-Concrete Composite Floor
title_full The Design of a Semi-Prefabricated LVL-Concrete Composite Floor
title_fullStr The Design of a Semi-Prefabricated LVL-Concrete Composite Floor
title_full_unstemmed The Design of a Semi-Prefabricated LVL-Concrete Composite Floor
title_short The Design of a Semi-Prefabricated LVL-Concrete Composite Floor
title_sort design of a semi prefabricated lvl concrete composite floor
url http://dx.doi.org/10.1155/2012/626592
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