REINFORCEMENT NEEDS FOR THE FOUNDATION OF A MULTI-STOREY BUILDING Y – NORTH JAKARTA

The North Jakarta XYZ Building Construction Project consists of two stages of construction.  The first phase of construction began on August 17, 2020 and was completed on August 17, 2021, while the second phase is currently under construction.  The building structure consists of two towers with a total of 107 residential units for households. Construction work on this project includes preparatory work such as marking work, foundation work, substructure work such as pile drive, and superstructure work such as pillar work and curtain installation. The method of calculating rebar reinforcement using the Bar Bending Schedule (BBS) includes several steps to calculate the working volume, calculate reinforcement needs, calculate waste and calculate rebar weight. Based on the results of the analysis, it can be obtained that the main rebar requirement for D19 is 676.7 kg or 36.8% of the rebar requirement. End Spiral + Joint Reinforcement, D13 is 908.54 Kg or 48.98% of the rebar requirement. Middle Spiral Rebar + Joint, D10 amounted to 269.51 Kg or 14.53% of rebar requirements. Rebar waste, namely D19 Main Reinforcement, contains 178.08 kg of waste or 26.31% of rebar needs. Rebar waste, namely Spiral End Reinforcement + Joint, D13 contains 27.46 kg of waste or 12.63% of rebar needs.  Rebar waste, namely Spiral End Reinforcement + Joint, D13, contains 11.85 kg of waste or 5.44% of rebar needs. The amount of cost needed for strengthening needs is Rp. 30,603,434.