Karya Ilmiah Online Universitas Trisakti
Ryan Faza Prasetyo, Darmawan Pontan
Rebar materials are one of the major construction materials in a construction process that generate main
contribution of construction and demolition (C&D) wastage. Therefore, a monitoring and controlling process as a
part of waste management in design, procurement and construction phases is obligatory. This paper presents a
model for a rate calculation of rebar waste in the construction phase based on realtime progress by blending output
from Building Information Modelling (BIM) Quantity Takeoff Software in the form of the report of total volume
steel reinforcement and that of current rebar volume based on the existing progress to monitor spreadsheet to
perform the rate calculation of real time and exact rebar waste. Simulation and “What if” scenario were applied to
this proposed calculation model. For a 40% progress of the suspended road structure project, the proposed
calculation model partakes 4,02% rebar waste rate. This result validates that the model can produce rebar waste
rate based on the exisiting project progress.