Department of Building and Civil EngineeringContains PDF journal articles for this departmenthttp://ir.tum.ac.ke/handle/123456789/1742024-03-22T11:36:26Z2024-03-22T11:36:26ZINFLUENCE OF INTEGRITY AND QUALIFICATION OF BUILDING INSPECTORS ON CONSTRUCTION OFSUBSTANDARD BUILDINGS IN KENYAKuta, Dr. Eng. Joseph. Nhttp://ir.tum.ac.ke/handle/123456789/174852024-02-28T00:00:35Z2017-10-01T00:00:00ZINFLUENCE OF INTEGRITY AND QUALIFICATION OF BUILDING INSPECTORS ON CONSTRUCTION OFSUBSTANDARD BUILDINGS IN KENYA
Kuta, Dr. Eng. Joseph. N
Purpose:The general objective was to analyzetheinfluence of integrity and qualification of building inspectors on construction of substandard buildings in Kenya.Methodology:The study utilized a descriptive research design. This study used contractors operating in Nairobi metropolitan. The contractors were selected because they are familiar with drivers of sub-standard buildings In Kenya. There are 220 registered companies for contractors in Nairobi. This study used both stratified sampling and simple random sampling. The employees were stratified into two strata of management employees and other employees. The target sample size for this study was 200 employees. The collection of primary data was done using structured questionnaire which was administered to the respondents. Data was analysed using SPSS version 20 where results were presented in form of frequencies, descriptive statistics and inferential statistics.Results:The study findings showed that integrity and qualification of building inspectors had a positive effect on construction of standard buildings in Kenya. It can be concluded that though building inspectors are not part of construction firms their qualifications and integrity is a key driver in the construction of standard buildings.Unique Contribution to Theory Practice and Policy: It is recommended that integrity and qualification of building inspectors contributed to construction of substandard buildings.It is recommended that the inspectors should carry their duties without malice and inspect the building plans to ensure that incidents of substandard buildings are avoided. The government and ministry of public works should ensure that they employ competent inspectors.
2017-10-01T00:00:00ZINFLUENCE OF POOR REGULATION AND SUPERVISION MECHANISMS ON CONSTRUCTION OF SUBSTANDARD BUILDINGS IN KENYAKuta, Dr. Eng. Joseph. N.http://ir.tum.ac.ke/handle/123456789/174842024-02-28T00:00:35Z2017-01-01T00:00:00ZINFLUENCE OF POOR REGULATION AND SUPERVISION MECHANISMS ON CONSTRUCTION OF SUBSTANDARD BUILDINGS IN KENYA
Kuta, Dr. Eng. Joseph. N.
Purpose: The general objective was to analyze the influence of poor regulation and supervision
mechanisms on construction of substandard buildings in Kenya
Methodology: The study utilized a descriptive research design. This study used contractors
operating in Nairobi metropolitan. The contractors were selected because they are familiar with
drivers of sub-standard buildings In Kenya. There are 220 registered companies for contractors
in Nairobi.This study used both stratified sampling and simple random sampling. The employees
were stratified into two strata of management employees and other employees. The target sample
size for this study was 200 employees. The collection of primary data was done using structured
questionnaire which was administered to the respondents. Data was analysed using SPSS version
20 where results were presented in form of frequencies, descriptive statistics and inferential
statistics.
Results: The study findings showed that poor regulation and supervision mechanisms have
contributed to quality of substandard buildings in Nairobi
Unique Contribution to Theory Practice and policy: It is recommended that the government
should ensures that the county by- laws are strictly adhered to concerning issuance of licenses
and inspection of construction sites. It is also recommended that the regulatory bodies should set
high penalties for contractors who bend the laws. The government should ensure that all
contractors should adopt professional regulations to reduce the many incidents of negligent
performance.
2017-01-01T00:00:00ZApplication of stacking ensemble machine learning algorithm in predicting the cost of highway construction projectsMeharie, Meseret GetnetMengesha, Wubshet JekaleGariy, Zachary AbieroMutuku, Raphael N.Nhttp://ir.tum.ac.ke/handle/123456789/174832024-02-28T00:00:34Z2022-08-03T00:00:00ZApplication of stacking ensemble machine learning algorithm in predicting the cost of highway construction projects
Meharie, Meseret Getnet; Mengesha, Wubshet Jekale; Gariy, Zachary Abiero; Mutuku, Raphael N.N
Purpose – The purpose of this study to apply stacking ensemble machine learning algorithm for predicting
the cost of highway construction projects.
Design/methodology/approach – The proposed stacking ensemble model was developed by combining
three distinct base predictive models automatically and optimally: linear regression, support vector machine
and artificial neural network models using gradient boosting algorithm as meta-regressor.
Findings – The findings reveal that the proposed model predicted the final project cost with a very small
prediction error value. This implies that the difference between predicted and actual cost was quite small. A
comparison of the results of the models revealed that in all performance metrics, the stacking ensemble model
outperforms the sole ones. The stacking ensemble cost model produces 86.8, 87.8 and 5.6 percent more accurate
results than linear regression, vector machine support, and neural network models, respectively, based on the
root mean square error values.
Research limitations/implications –The study shows how stacking ensemble machine learning algorithm
applies to predict the cost of construction projects. The estimators or practitioners can use the new model as an
effectual and reliable tool for predicting the cost of Ethiopian highway construction projects at the
preliminary stage.
Originality/value – The study provides insight into the machine learning algorithm application in
forecasting the cost of future highway construction projects in Ethiopia
DOI 10.1108/ECAM-02-2020-0128
2022-08-03T00:00:00ZEFFECTS OF STABILIZERS ON WATER ABSORPTION OF COMPRESSED EARTH BLOCKS MADE FROM MANGU SOILFopossi, Aimé JulesMutuku, Raphael NdisyaNgapgue, Françoishttp://ir.tum.ac.ke/handle/123456789/174822024-02-28T00:00:36Z2024-08-01T00:00:00ZEFFECTS OF STABILIZERS ON WATER ABSORPTION OF COMPRESSED EARTH BLOCKS MADE FROM MANGU SOIL
Fopossi, Aimé Jules; Mutuku, Raphael Ndisya; Ngapgue, François
This work characterizes, classify and improve the physical properties of the natural material from Mangu with
stabilizers to be qualified as good soil for the production of good earth blocks with low water absorption
coefficient. Results of the test carried out showed that the natural soil used was clayey soil with medium
plasticity. The addition of 50% sand, has highly improved the soil grading properties. The ratios with optimal
performances are 50% sand added with 6 to 8% cement and from 8 to 9% added with. Stabilizers have highly
improved the hydrological properties of blocks specimen for using capillary environment.
2024-08-01T00:00:00Z