| dc.description.abstract | This study attempted to investigate project delivery reliability from Kenyan road
rehabilitation context under two objectives: establish the main factors that lead to delays in
road rehabilitation projects; and determine the predictability of project delivery time using
Bromilow's time-cost model. The study used a self-administered questionnaire that sought
both primary and secondary data from respondents.
From the research, the critical factors contributing to project delivery delays were found to
include underestimation of project duration, contractor's and client's cash flow or budgetary
problems, delayed payment to contractor, inadequate supervision of works, and increase in
scope of works.
Moreover, the study established that the duration of Kenyan road rehabilitation projects can
be modelled using Bromilow's time-cost formula in the form T = KcB, where T is the
duration in days, C is the contract cost in millions, K is a constant characteristic of
rehabilitation time performance, and B is a constant indicative of the sensitivity of time
performance to cost level or project siz.e,. Regression analysis was used to compute the
values ofK and B. The coefficient of determination (R2) was used to establish how well the
model actually fits the data.
The conclusion from the study is that the estimation of road projects duration in Kenya is far
below the actual duration taken to complete them. This suggests pervasive project time
overruns in the economy's infrastructure projects, an operational conundrum beckoning for
serious leadership, professional and managerial intervention. | en |
