Title Development of an Algorithm for the Automatic Quantity Estimation of Wall Rebar
Authors Kim, Do-Yeong ; Suh, Sangwook ; Kim, Sunkuk ; Lwun Poe Khant
DOI https://dx.doi.org/10.6106/KJCEM.2023.24.5.083
Page pp.83-94
ISSN 2005-6095
Keywords Algorithm; Wall Rebar; Special length; BIM; Quantity Estimation
Abstract In order to devise a rebar usage optimization algorithm, it is necessary to calculate the exact rebar length and revise the arrangement of rebars into special lengths. However, the process of rearranging numerous rebars and manually calculating their quantities is time-consuming and requires significant human resources. To address this challenge, it is necessary to develop an algorithm that can automatically estimate the length of rebars and calculate their quantities. This study aims to create an automatic estimation algorithm that improves work efficiency while ensuring accurate and reliable calculations of rebar quantities. The algorithm considers various factors such as concrete cover, hook length, development length, and lapping length, mandated by the building codes, to calculate the quantity of rebars for wall structures. The effectiveness of the proposed method is validated by comparing the rebar quantities generated by the algorithm with manually calculated quantities, resulting in a difference rate of 1.14% for the hook case and 1.37% for the U-bar case. The implementation of this method enables fast and precise estimation of rebar quantities, adhering to relevant regulatory codes.