Assesment Of Current Application Of Formwork In Building Construction Projects In Hossana Town

Abstract

Formwork is the largest cost component for a reinforced concrete structures. Its cost accounts for 40 to 60 percent of the cost of the concrete frame in developed country. A large proportion of the cost of conventional formwork is related to formwork labor costs. Significant cost saving will be achieved by reducing labor costs. The main objective of this thesis is to assess on current application of formwork. This can be achieved by identifying formwork types and materials used at building construction project sites in Hosanna, by collecting factors influencing selection of formwork system, by investigate the quality implication of current formwork practice and effects of the using current construction practices Among the different tools used to collect data, self-administered questionnaire in the form of both close and open-ended questions used to collect all the relevant data used to answer the research question. A total of 60 questionnaires were distributed to contractors & consulting firm. For analysis a total of 57 questionnaires where used. The method of analyzing the collected data is based on ranking the percentage of frequencies and by using relative importance index (RII). This research used a mixture of descriptive statistics, graph and pie chart to present the collected data. From collected data type of formwork used 65% of respondents use conventional formwork system and the remaining 35% use modern conventional formwork system. Most commonly used formwork materials are plywood and steel formwork materials in Hosanna town. Some of the quality problems of using conventional formwork system are not straight vertical surface, uneven surface and poor construction joint are some problems. The effects of using current formwork practice high influential effect was high labor intensive, secondly limited no of reuse and thirdly high wastage were the most three influential effects. Based on this results construction industry of hosanna town formwork system should be improved by utilizing modern formwork system