Flexural Analysis of RCC Rectangular Beam Using Welded Lapping and Coupling at Center

Abstract

Splicing of bar is inevitable in construction site because continuous rebar is impossible due to short length in manufacturing process for shifting of steel is easier or required length of steel is not available. The continuity of steel is required in reinforced concrete structure as steel is used to transfer the tension and shear forces but splicing of bar having many imperfections such as improper lapping length, increase in cost of construction, congestion for concrete etc. So for connecting the bars there is an alternate method called the coupler. This study is focused on the flexural behavioral of beam by using welded lapping and coupling for steel rebar. For
getting the desired result the experimental study was done with casting reinforced concrete beam. This study will also focus on comparison of conventional lapping, welded lapping and couplings with respect to costing, labours work, flexural strength by applying the point load at center. As center point load gives the maximum stress at center. The experiment will established the results as curing of beam after 7 days, 14 days and 28 days. The comparison of these beams revels the exact flexural strength, lapping length cost and ease of doing work. The steel quantity gets reduce with effective numbers when we will use coupler. A conventional lapping consumes more steel as whole RCC building taken in account.