Validation of the crew of 800-mm sanitary sewer by productivity model--using Nanzih and Fengshan districts of Kaohsiung as an example

• Main Authors: Chien-Hung Chou, 周建宏
• Other Authors: Tzong-Tzeng Lin
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/38314698229437304236

碩士 === 國立高雄應用科技大學 === 土木工程與防災科技研究所 === 99 === In recent years, although many researchers have studied on the investigation of the crew of construction rate based on Thomas’s productivity theory and multiple regression models, few study was carried on the verification and modification of crew-scheduling productivity model under different geological condition. Thus, this study estimates the difference between model-predicted productivity and actual productivity (using Nanzih and Fengshan districts of Kaohsiung city as the actual cases). This research used the crew of a 700-mm jacking pipe as a model-predicted productivity (7.57 wh/m) to predict the productivity of case A and case B (800-mm jacking pipe). The results indicated that the both of model-predicted productivities are higher than the actual productivity. Then, we calculate the ratio of optimal productivity and model-predicted productivity (0.4465 and 0.2867, respectively). By the comparison of construction conditions, it shows that the overestimation influencing factor could be related to the deeper groundwater level and the better geological condition.