Industrialization of building components on small temporary sites : a comparison study of component factory#1 at Bangmhanang district and component factory#2 at Saimha district Nonthaburi province
Abstract:
The purpose of this research is to study the construction of an industrialized system component production plant with load bearing walls, production steps, transportation, and ready-made component installation. This was done through a comparison of Plant 1 production of two-floored, mid-sized detached houses of about 161 square meters of use area, and Plant 2 production of a similar, small-sized house of about 131 square meters of use area. The methods used were observation, photo-taking, stakeholder interviewing, data collection, analysis, and result/conclusion. The research results of the production cost of the plant construction revealed that for the six-rai Plant 1, the single production line had an average construction cost of 3,613,333.33 Baht per rai or 21,680,000 Baht per production line, and two-lined production at the fourteen-rai Plant 2 had an average construction cost of 2,585,714.29 Baht per rai or 18,600,000 Baht per production line. Plant 1 had an average production cost of 1,027,619.05 Baht per rai, 3,580,000 Baht per production line higher than that of Plant 2. For the component production the mid-sized housing with a production area for concrete components of 321.85 square meters, the cost of production, transportation, and component installation was 1,010.57 Baht per square meter. On the other hand, the component production of the small-sized housing with a production area for components of 257.32 square meters, the cost of production, transportation and component installation was 1,030.40 Baht per square meter, 19.83 Baht per square meter lower. Concerning the time duration for production, transportation and component installation, the mid-sized housing took 26 days per house and the small-sized housing took 18 days. Mid-sized house production took 8 days longer since Plant 1 did not have a continuous working time and there was more work to be done. In short, the research results reveal that the advantages of mid-size housing construction are having large-sized components with no difference in labor cost and production operation compared to that of small-sized housing, but the disadvantage is in transportation, which can cause problems and be a larger obstacle than for small-sized housing.