Abstract:
Bidding a construction project involves enormous information from various
persons e.g. architecture, engineers, contractors, suppliers, etc. This complexity
influences a precision and lead-time used for cost estimation which is the key issue for
bidding any project. This study therefore proposes an application for cost estimation of
building construction works for a case study company. The case study company had a
long lead-time in cost estimation about 9.75 tons/ labor-day, particularly the estimation
of structural steel for building construction which consists of numerous components and
difficult to do a list of materials requirement. This was because of the company
manually executed works by hand. This results a long lead-time of cost estimation,
labor-consumption, and may cause some loss opportunities of being a selected
contractor. The developed application consists of three execution modules: columns
structure, beam structure, and trusses structure. It permits an un-expert user be able to
estimate building construction works. The result shows that it enhances the efficiency of
cost estimation up to 18.97 tons/ labor-day. In the other words, 52.43 % of efficiency
increased comparing to the previous method.