IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 _______________________________________________________________________________________ Volume: 05 Issue: 05 | May-2016, Available @ http://ijret.esatjournals.org 529 STUDY OF ADVANCED TUNNEL FORMWORK SYSTEM IN HIGH RISE BUILDING Tejas D. Aradhye 1 , Emeritus M. R. Apte 2 1 Post graduate Student, Construction and Management, Maharashtra Institute of Technology, Pune (Maharashtra, India). 2 Professor Emeritus, Construction and management, Maharashtra Institute of Technology, Pune (Maharashtra, India) Abstract Real estate construction industry has a reputation of not begin very technologically sophisticated, generally lagging in innovation, construction techniques & management. But now a day’s lot of research is carried out in this sector, advanced TUNNEL formwork & ALUFORM system are good examples of this innovation. Formwork perform key role in construction. Formwork itself costs around 20-25% of total cost of project. Also it requires minute level planning to achieve quality and economy. Advanced TUNNEL formwork system and ALUFORM system (Similar to MIVAN technology) are used to construct monolithic structures in which slab, beam & walls are casted at one time which acts as RCC load bearing structure. This paper aimed at studying advanced tunnel formwork system in high rise building, to compare this system with Aluform system and to find best formwork in terms of economy and rapid construction. Keywords: TUNNEL Formwork, ALUFORM System, Slab Cycle, Economy. -------------------------------------------------------------------***--------------------------------------------------------------------- I. INTRODUCTION Formwork is a temporary or permanent mould including supporting structures, in which concrete is poured. Formwork supports this poured concrete until it gains strength sufficient to carry its own weight and live loads on it. Formwork should be capable of carrying all dead load and live load s on it. In order to successfully carry out its function, formwork must achieve a balance of resistance to leakage, containment, strength, accuracy, finish and reuse potential, access for concerted. Formwork planning process is divided in 3 stages First stage: The necessary information and limiting conditions must be collected and defined. When projects of similar nature are executed, a checklist can be of immense help in obtaining information required to prepare a complete scheme. Second stage: The formwork system to be used can be selected. In addition to cost of the materials, the choice of the system will be influenced by the experience of the planner and of the team, which has to set up the formwork on the site, and by the project archive. A database / project archive that captures the experience gathered over the years can aid in cost effective system selection. Third stage: This involves all engineering design tasks. This part of the process is most time consuming. It is important to be able to allow for changes arising at later phases of the project. The emphasis should be on maximum reuse of materials available and procuring minimum materials Just-In-Time. II. OBJECTIVE Objective of study is to study tunnel formwork systems & after to compare with Aluform system on basis on 1. Slab cycle time 2. Cost parameters. 3. Quality parameters. And hence to suggest best formwork system for in high rise building. III. THEORETICAL CONTENT Formwork planning process is divided in 3 stages. Stage 1: Information, data collection and examination of limiting conditions. Stage 2: Analysis of system & choice of system based on information collected Stage 3: Use of system in construction. Depending upon purpose of use, method of erection various types of formwork systems are selected. Various types of formwork are available varying from traditional formwork to permanent formwork depending on its purpose. The formworks for vertical concreting are generally called wall forms and those for horizontal concreting are called slab or floor forms. These formwork systems varies from conventional to advanced MIVAN, TUNNEL formwork systems having slab cycle of 1-3 days. Aluminum formwork system / ALUFORM system The System is fast, simple, adaptable and very cost effective. Aluform is advanced formwork system in which cast in place concrete structured building can be constructed. The system