AN ASSESSMENT OF LIFT SYSTEM PERFORMANCE IN SELECTED HIGH RISE BUILDINGS IN ABUJA CITY
AN ASSESSMENT OF LIFT SYSTEM PERFORMANCE IN SELECTED HIGH RISE BUILDINGS IN ABUJA CITY
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Date
2021-06
Authors
EMMANUEL, CHONGCICIMMI IBRAHIM
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Abstract
The performance of lift systems in high rise buildings is essential for the efficiency of vertical
transportation system. However, high rise buildings are often confronted with problems
associated with lift system performance such as long waiting time, vibration, door operation,
lighting and noise level in lift car during ride. This study assessed the performance of lift
system in selected high rise building in Abuja city with the view to enhancing the efficiency
of vertical transport system in buildings. The study measures performance parameters such as
the Average Waiting Time (AWT), Transit Time (TRT), Time to Destination (TTD), lift car
interior sound level, lift car illumination, door operation timing and sound, levelling accuracy
and ride quality of lift systems. The study adopted field survey research design,
encompassing measurements and a structured checklist for the collection of relevant data on
14 selected high rise buildings and 41 lift systems in the Central Business District (CBD) of
Abuja city. Six tools were used to measure the performance parameters of the lift systems
within the selected buildings. The performance parameters were evaluated against the
standard performance requirements for an ideal lift system. Results from analysis showed that
85.7% of the selected buildings have lift systems with AWT above minimum standard
requirement, 64.3% with unsatisfactory interior sound level and 71.4% with poor ride quality.
Conversely, 71.4% of these buildings have lift systems with optimum illuminance and 100%
with satisfactory lift door operation. Results from the inferential statistics showed significant
differences (p<0.05) in the mean value of AWT, TRT, TTD, lift car interior sound level, and
lift acceleration. Based on the findings, the selected buildings were considered to have lift
systems performing below expected standard. Nonetheless, the study provided data for lift
performance parameters for optimizing the service delivery of lift systems within high rise
buildings in Nigeria.
Description
A DISSERTATION SUBMITTED TO THE SCHOOL OF POSTGRADUATE
STUDIES, AHMADU BELLO UNIVERSITY, ZARIA
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF
MASTER DEGREE IN BUILDING SERVICES
DEPARTMENT OF BUILDING,
FACULTY OF ENVIRONMENTAL DESIGN,
AHMADU BELLO UNIVERSITY,
ZARIA - NIGERIA