EVALUATION OF LABOUR-BASED TECHNIQUE FOR CONSTRUCTION OF SMALL EARTH DAMS IN NIGERIA
EVALUATION OF LABOUR-BASED TECHNIQUE FOR CONSTRUCTION OF SMALL EARTH DAMS IN NIGERIA
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Date
1994-05
Authors
OWOSENI, ADeyemi Bashir
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Abstract
This thesis evaluates the construction of small earth dams
using the labour-based/light equipment supported technique.
Actual cases of dam construction at three different locations in
Nigeria have been used as case studies. Data from these projects
were used to simulate likely construction costs using the labourbased
technique and the traditional equipment-based technique.
The results were used to compare the two techniques. Construction
costs, duration of construction and employment generation were
used as major indices for comparison.
Two innovavite approaches of method statement and the time
and location chart were used to determine inputs needed under each
construction technique. The methods were found to be appropriate
in ensuring consistency work planning, a quality that hitherto had
been the main drawback of the labour-based technique.
Under the labour-based technique, construction costs for the
projects were N279.279.00, N4,670,573.00 and M6,198,125.00 while
construction duration were 25 weeks, 30 weeks and 40 weeks respectively.
The corresponding cost figures for the equipment-based
technique were N585,152.00, H7,570,737.00 and N10,711,285.00 while
construction duration were 7 weeks, 29 weeks and 39 weeks respectively.
The simulated figures were found to be within 12% of
actual construction costs. The labour-based technique was found
to have about 40% reduction in the total construction cost and
potentials for generating 10 times more employment than the
equipment-based technique. Over 80% of such employment would acrue
to unskilled workers who could come from the locality of construction
site.The results of this study have therefore shown that labourbased
technique in comparison with equipment-based methods are
cheaper, execution time compatible, quality of work comparable,
it utilises local resources more extensively and boost the local
economy through employment generation.
Description
A THESIS SUBMITTED TO THE POSTGRADUATE SCHOOL
AHMADU BELLO UNIVERSITY, ZARIA
IN "PARTIAL FULFILLMENT" OF THE REQUIREMENTS FOR
THE DEGREE OF MASTER OF SCIENCE
(STRUCTURAL ENGINEERING)
DEPARTMENT OF CIVIL ENGINEERING
FACULTY OF ENGINEERING
AHMADU BELLO UNIVERSITY
ZARIA
Keywords
EVALUATION,, LABOUR-BASED,, TECHNIQUE,, CONSTRUCTION,, EARTH DAMS,, NIGERIA