Izvorni znanstveni članak
https://doi.org/10.5592/otmcj.2015.1.3
Efficiency multipliers for construction productivity: A Comparative Evaluation
Antonios Panas
; Centre for Construction Innovation, Department of Construction Engineering and Management, Faculty of Civil Engineering, National Technical University of Athens, Athens, Greece
John-Paris Pantouvakis
; Centre for Construction Innovation, Department of Construction Engineering and Management, Faculty of Civil Engineering, National Technical University of Athens, Athens, Greece
Sažetak
Efficiency multipliers for construction productivity are
often estimated on an ad-hoc basis, depending on the project
characteristics. The purpose of the study is to define a structured
approach allowing the determination of the appropriate
empirical productivity relations and efficiency multipliers along
with their respective values. The proposed method breaks
down a given construction activity into distinct operational
scenarios which represent unique combinations of key productivity
variables, thus providing a perspective on construction
productivity for both labor-intensive and equipment-intensive
operations. In addition, this is the first study to explicitly
describe the process and the theoretical prerequisites for the
statistically valid derivation and comparative evaluation of new
efficiency multipliers for a given construction activity. A case
study of heavy-duty concrete paving activities over an eight
month period is utilized as a testbed for the derivation of new
efficiency multipliers. An excavation scenario with the use of
published estimation formulae is also presented to demonstrate
the approach’s capability to corroborate the values of
known efficiency multipliers. The results indicate that the proposed
approach improves the accuracy of estimated multipliers
stemming from past productivity studies and increases the estimation
precision for the derivation of new multipliers related to
future construction operations.
Ključne riječi
Concrete pavements; Estimation; Excavation; Multipliers; Productivity
Hrčak ID:
142753
URI
Datum izdavanja:
30.6.2015.
Posjeta: 2.143 *