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International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395-0056

Volume: 10 Issue: 05 | May 2023

p-ISSN: 2395-0072

www.irjet.net

FORMWORK TECHNOLOGY IN HIGH-RISE BUILDING ITS COST AND QUALITY ANALYSIS Ar. Swetha. D1, Ar. Radhika2 1 Post Graduate Student, M. Arch – Construction Project Management, Faculty of Architecture, Dr. MGR

Educational and Research Institute, Maduravoyal, Chennai

2 Head of the department, M. Arch – Construction Project Management, Faculty of Architecture, Dr. MGR

Educational and Research Institute, Maduravoyal, Chennai ---------------------------------------------------------------------***--------------------------------------------------------------------Additionally, project constraints such as overall cost and Abstract - This paper describes about the formwork

completion time significantly influence the choice of material for formwork. Timber, Steel Aluminum, Plastics, Fabric are common materials used in formwork. The formwork used in high-rise construction are timber, aluminium formwork and tunnel formwork.

technology used in high- rise building suitable for Indian construction. By utilizing new technologies in formwork, construction can now achieve the casting of larger elements in a single pour. This advancement not only minimizes time and labor needed but also outperforms conventional methods. Formwork technology is based on the cost, time, and quality of project delivery. The study is about advantages of aluminium formwork and tunnel formwork with conventional system in terms of cost and quality analysis. Traditional approaches can’t keep up the demand of infrastructural facilities with high degree of quality control & assurance. Case studies with two different technology is done, its cost and duration are compared. This study is focusses on the two different conducted on a construction site in Chennai. Further, the real time cost duration and labor savings in the use of aluminium formwork is demonstrated in a G+21, 8 tower building.

1.2 ALUMINIUM FORMWORK: The utilization of an aluminum formwork system enhances the construction's quality while simultaneously reducing both time and costs. The cost-effectiveness of the formwork becomes evident when it is utilized for numerous construction cycles. As aluminium can be used around 250 repetations. The primary drawback of aluminum forms is that once the formwork is manufactured, no changes can be made. The system typically operates on a four-day cycle, as outlined below:

Key Words: Aluminium formwork, cost, tunnel formwork, comparison of quality analysis, economy, time saving.

Day 1 - The initial task involves erecting vertical reinforcement bars and one side of the vertical formwork for either an entire floor or a portion of a floor.

1. INTRODUCTION

Day 2 - The subsequent step entails erecting the second side of the vertical formwork and installing formwork for the floor.

Formwork in construction refers to the utilization of supportive structures and molds to shape concrete into desired structures. Concrete is poured into these molds, which can be constructed from various materials such as steel, wood, aluminum, or pre-made forms. A range of material options is available for constructing the formwork. The selection of formwork material is based on various factors, including cost, project requirements, and the type of structure involved. This study is to compare conventional with aluminium and tunnel specifically related to high rise building

Day 3 - Involves the placement of reinforcement bars for the floor slab and the casting of walls and the slab. Day 4 - The vertical formwork panels are removed after 24 hours, while the support props remain in place for seven days, and the floor slabs formwork remains in place for 2.5 days. 1.3 TUNNEL FORMWORK:

1.1 TYPES OF FORMWORKS:

A tunnel is a specially fabricated structure made of structural steel, designed in the shape of an L and resembling a halfroom in size. Its primary function is to facilitate the seamless pouring of reinforced concrete (RCC) walls and floor slabs, allowing them to form a unified and uninterrupted structure. Two half tunnels are combined to create a full tunnel with dimensions equivalent to that of a room. This innovative approach ensures efficient construction with a focus on speed, quality, and precision while offering the advantages of

Timber has been the prevailing choice of material for formwork thus far. Nonetheless, due to diminishing forest reserves and escalating timber costs, the adoption of alternative materials like plywood and steel has gained prominence. Moreover, plastics and fiberglass have recently emerged as viable options for prefabricating formwork. The selection of material depends on factors such as the construction's characteristics, material availability, and cost.

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