TY  - CONF
TI  - Impact of Variability on Construction Schedules
AU  - Shen, Li Jun
AU  - Chua, David K.H.
AD  - Research Engineer, Dept. of Civil Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, (65) 68744643, cveslj@nus.edu.sg
AD  - Associate Professor, Dept. of Civil Engrg., National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, (65) 68742195, FAX (65) 67791635, cvedavid@nus.edu.sg
PY  - 2005
DA  - 2005/07/19
T2  - 13th Annual Conference of the International Group for Lean Construction
C3  - 13th Annual Conference of the International Group for Lean Construction
CY  - Sydney, Australia
SP  - 375
EP  - 383
AB  - Variability degrades project performance. Two types of variability may affect a construction schedule, namely, task duration and the availability of resource and information (RI) prerequisites. It is well known that the variability of task duration could delay project completion, however, the effect of RI availability/unavailability on construction schedule needs to be depicted. This paper presents a simulation model which allows studying the effect of RI related variability on construction schedule. Comparisons are made to illustrate the impact of each type of variability as well as the combination of both types of variability. The results suggest that both types of variability should be minimized in order to achieve reliable work plans which is important to reduce project delays and schedule changes.
KW  - Variability
KW  - Integrated Production Scheduler
KW  - Constraints
KW  - Reliable plan
L1  - https://www.iglc.net/papers/details/383/pdf
UR  - https://www.iglc.net/papers/details/383
DB  - IGLC.net
LA  - English
N1  - Export date: 04 October 2026
ER  -