Leung, A W T and Tam, C M (1999) Models for assessing hoisting times of tower cranes. Journal of Construction Engineering and Management, 125(6), pp. 385-391. ISSN 0733-9364
Abstract
Accurate assessment of hoisting times is crucial for planning construction activities. The objective of this paper is to develop reasonably accurate prediction models to assess hoisting times of tower cranes. Twenty variables considered attributable to the hoisting time are evaluated. In modeling the hoisting movements, the upward hoisting and downward hoisting of a hoisting cycle are classified as the supply hoisting and the return hoisting. Multiple regression techniques are used for analyzing and building up the models. The hoisting of precast concrete facades and concrete skips are studied. The significance of the variables are discussed and compared. Finally, the paper presents an example of applying the models.
| Item Type: | Article |
|---|---|
| Index terms: | tower crane, multiple-regression, construction activity, prediction model, modelling, precast concrete, hoisting, movement |
| Subjects: | statistical analysis, health behaviours and lifestyles, building materials, prediction and forecasting, analytical methods, construction operations, maintenance engineering |
| Topics: | Engineering Principles, Business Strategy, Site Management, Construction Materials, Research Practice |
| Descriptive scope: | 3 PCA |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here