Analysis of Productivity in Column Work Using Formwork System with Zoning Cycle on the Hospital Construction Project in Surakarta

Abstract

Purpose:

This study aims to examine the column work implementation method, analyse productivity, calculate actual labour coefficient numbers, and identify obstacles that may hinder the implementation of formwork system work.

Methods/Design:

This study uses a descriptive quantitative method. Primary data was obtained through observations and field surveys at a hospital project in Surakarta, specifically the Kasih Ibu Hospital Construction Project, by examining the actual conditions on-site. Secondary data was obtained from relevant supporting references for the research needs. The initial step of the research involved observing and analysing field data to determine work productivity values and obtain actual labour coefficient numbers using the general calculation formula, referring to an article sourced from books on planning and real cost estimates

Findings:

The obtained as follows: (1) column formwork installation: 0.46 m²/minute; (2) column pouring: 0.22 m³/minute; (3) column formwork removal: 1.28 m²/minute. The actual labour coefficient values [OH] obtained were: (1) Formwork installation: labour 0.009 OH, foreman 0.004 OH, operator 0.004 OH; (2) Column pouring: labour 0.018 OH, foreman 0.009 OH, operator 0.009 OH; (3) Formwork removal: labour 0.003 OH, foreman 0.0016 OH, operator 0.0016 OH. On-site obstacles include issues with formwork placement areas, lifting problems, installation difficulties, and equipment issues. With an appropriate solution approach to each challenge, it is expected that column formwork installation can be carried out more effectively and safely.

Practical implication:

Obtain the productivity value of column work using the formwork system in the field and determine the actual labour coefficient. To provide an overview for stakeholders in the construction industry, such as the productivity value of column work with the formwork system, which can serve as a basis for determining the labour coefficient in the preparation of AHSP (Unit Price Analysis for Work).