Impact of the Buffer Size on Precast Fabrication

Chien-Ho Ko1

1Professor, Department of Civil Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, +886 8 770-3202,; President, Lean Construction Institute-Taiwan; Research Director, Lean Construction Institute-Asia.


Buffer sizes between production stations are one factor that influences production performance. Current practices in precast production ignore buffer size between stations typically induce unfeasible production plans. Research questions for this paper are 1) how would buffer sizes between precast production stations affect precast production plans and 2) how could computational techniques help in arranging precast production plans? To answer those questions, a program that considers production resources and buffer size between stations is developed. Impact of buffer sizes on production makespan and delivery is analyzed using a case study. Experimental results show that buffer sizes between stations are crucial for acquiring reasonable and feasible precast production plans. A sufficient buffer size larger than the required buffer size could help achieve a better performance with a shorter makespan and lower costs.


Process, production, waste, precast, buffer.



Ko, C. 2016, 'Impact of the Buffer Size on Precast Fabrication' In:, 24th Annual Conference of the International Group for Lean Construction. Boston, USA, 20-22 Jul 2016.

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