Proportion Of Resource Component Cost In Multi-Story Buildings: Indonesia Case
Abstract
The construction work contractor must know the proportion of the cost components
for materials, tools, and wages. Knowing the ratio of the component's actual costs helps the
contractor estimate the new building structure's value. Previous researchers have researched
the large proportion of the cost component, but the research has not issued a linear model. The
cost component is highly dependent on the management of construction resources on site.
Knowing the proportion of the actual cost of structural elements to the building structure budget
is very important. Data on cost components and total expenses were obtained from 52 buildings
starting on floors 2-9, which have been worked on by intermediate periodical contractors for
the last three years—data collection from January to March 2020. The proportion range of
component actual cost is the difference between the maximum and minimum proportions. The
proportion of actual building costs varies for each building—a linear regression equation
balancing each cost component to the actual total cost. Knowing the cost component proportion
model helps construction service providers allocate new buildings on time. They were
simulating linear equationsfor estimating realistic component cost. By entering the actual value
of the total structural cost with a budget of 90 percent, the proportion of labor, materials, and
equipment costs 41.979% respectively; 27,829% and 10,317%. The implication of the results
states that the largest ratio of the cost component falls to labor for multi-story building work.