BERKELEY PUBLICATIONS INTERNATIONAL JOURNAL OF ENVIRONMENTAL DESIGN & CONSTRUCTION MGT. (BJECM) (VOL. 10 NO. 4)
ISSN: 1933-5948 SEPTEMBER, 2019
Berkeley Research and Publications International,
Bayero University, Kano, PMB 3011, Kano State, Nigeria.
Nigeria, West-Africa. +234-708-717-3247
AN INVESTIGATION OF 2017 FLOODING EVENT IN NASARAWA HAYI IN NIGER STATE, NIGERIA
UZOMA GEORGE and ABDULKADIR, A.
Department of Geography, Federal University of Technology, Minna, Niger State
Floods are among the most devastating natural disasters in the world, claiming more lives and causing more property damage than any other natural phenomena. Nassarawa Hayi have had incidences of flash floods in the pasts, the experienced of 2012 floods in the area has not been witnessed in its recent history. This study investigates the factors responsible for flooding in the area. Quantitative and qualitative data techniques were used. Structural questionnaire and personal observation were made in the study area. Descriptive statistics was used to analysis data collected from the field. The findings show that Nasarawa Hayi is flood prone area and people within the areas are at risk of flood at any time. It also reveals that proximity to the flood prone area is the major cause of floods in the area. The study concludes that floods in area resulted in to displacement of people, food security, waterborne disease, agriculture loss and adverse on socio economic of the people in the area. Thereby recommends that Government and key Stakeholders should engage the communities in making them aware of the flood risk in view of the climate variability.
Keywords: Floods, Factors, Risk and Vulnerability
STRENGTH EVALUATION OF AGRO WASTE KERBS – STONES WITH DIFFERENT PARTICLE SIZES
GANA. A.J, ATOYEBI. O.D & ADEDOYIN . B. O. J
Civil Engineering Department, College of Engineering, Landmark University Omu-Aran
Strength evaluation of agro waste kerbstone with different particle size was the aim of this research work. The scarcity of building materials and the large disposal of waste agricultural material in developing countries has been a serious problem in building and agricultural industries. And because of this, it has now become very important for engineers to find a way to reuse agro waste material as alternative materials for construction. In this project work, quarry dust which is one of the materials used in kerb stone production was replaced at 10% 20% 30% with fine, crushed and uncrushed particles of palm kernel shell. The kerbs were cured for by water for 7 days, 14 days 28 days, At total of 90 kerbstones were produced for testing for compressive strength and water absorption. A decrease in the slump value was noticed as the amount the palm kernel shell increase. But at replacing with 30% of the fine aggregate, the slump value was high. This was so because of the increasing specific surface as a result of increasing the quantity of palm kernels shell. The compressive strength of the 20% replacement showed a stead increase in strength of the period of curing. Samples of0% replacement had a greater compressive strength at 7 days and 14 days of curing for all samples. But at after 28 days of curing, the 10% fine, 10% uncrushed and 20% fine replacement produced a compressive value higher than the control.
Keywords: Strength, Evaluation, Agro Waste Kerbs Stone, Particle Sizes
ENVIRONMENTAL EFFECT OF ARTISANAL AND SMALL SCALE MINING ACTIVITIES ON WATER QUALITY IN GURARA LOCAL GOVERNMENT AREA, NIGER STATE, NIGERIA
USMAN, U.S., SULEIMAN, Y.M AND YUNUSA, M.B
Department of Geography, Federal University of Technology Minna, Niger State, Nigeria
Artisanal and Small Scale Mining (ASM) activities have been identified as a major economic activity in Gurara Local Government Area of Niger State, Nigeria. This study evaluated the environmental effect of ASM activities on the environment, of Gurara LGA. The study utilized data from the ASM sites especially the soil and water samples to ascertain physicochemical parameters and heavy metal in waters. The result obtained were compared to the WHO acceptable standards. The results indicated that most of the water samples were polluted with lead, Aluminum, Zinc, among others and thus, unsafe for domestic use and aquatic life. Also, the concentration of the Lead, Aluminum and Zinc in the water sample was found to be higher than that of the control sample especially during the wet season. It has, thus, been discovered that ASM activities have significant effects on the water quality of the study area, because the water in the area. Therefore, there is the need for urgent measures to monitor and regulate the mining activities in the area, in order to reduce the effects on environmental quality especially the water.
Keywords: Mining, environment, standards, physicochemical parameters.
ASSESSMENT OF THE GREEN PRACTICES ADOPTED IN PUBLIC BUILDINGS IN NIGERIA- A CASE STUDY OF THREE STAR HOTELS IN ABUJA.
Department of Industrial and Technology Education, Federal University of Technology Minna, Niger State, Nigeria.
The study investigated the green practices adopted in public buildings in Nigeria, with particular reference to three star hotels in Abuja. The population of the study was 114 (89 facility managers and 25 registered builders). Two research questions were raised and two hypothesis tested at .05 level of significance guided the study. The instrument for data collection was a 35-items Green Practices in Public Buildings Questionnaire (GPPBQ) developed by the researcher. The questionnaire was validated by three building technology experts in the Department of Industrial and Technology Education, Federal University of Technology Minna, Niger State. A pilot test of the instrument was carried out in Lafia, Nasarawa State. The Cronbach alpha coefficient Method was used to determine the internal consistency of the instrument and 0.92 was obtained as the overall reliability coefficient of the instrument. Data collected was analyzed and Mean and Standard Deviation were used to answer the research questions while Z-test analysis was used to test the hypothesis at .05 level of significance. Findings revealed that some green practices were adopted by three star hotels in Abuja while others were not adopted. Based on these findings therefore, it was recommended among others that governments at all levels should subsidize the cost of green building materials. This is because some green building materials are expensive and this could hinder their adoption in building construction.
Index Terms: Green Practices, Hotels, Climate Change, Green Buildings and Sustainable Development.
AN ANALYSIS OF LAND USE / LAND COVER IN NORTH CENTRAL NIGERIA WATERSHED USING SWAT MODEL.
1DARAMOLA, J., 1M EKHWAN, T., 1MOKHTAR, J., 1LAM, K. C. AND 2TABITI, S. T.
1Geography Program, Social, Environmental, Development, Sustainability Research Centre (SEEDS), Faculty of Social Sciences and Humanities. Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia. 2Urban and Regional Planning Department, the Federal Polytechnic, P. M. B. 55, Bida. Niger State
The high rate of sediment influx into Nigeria dams call for urgent attention. Land use and land cover have been established to have considerable impacts on hydrology and sediment yield. Hence, the study seeks to understand the land use changes upstream Shiroro dam north central Nigeria watershed between the year 1975 and 2013 using Soil and Water Assessment tool Model. (SWAT) Land use and cover changes were evaluated using topographic maps of 1975, 2000 and 2013 respectively, the watershed land use types were reclassified into nine classes. Examination of the three analysis shows that the major human activities that took place in the watershed is the conversion of forest evergreen, range grasses and wetlands mixed to mostly agriculture, urban and other forms of land-use types. Between 1975 and 2000 there was total extinction of 0.03% forest evergreen land. Range grasses, forest mixed and wetlands forested lost about 23.92%, 2.06% and 3.77% respectively of its percentage watershed to other land use types. While agriculture, wetlands-mixed, water, barren and residential land use types gained 27.81%, 0.18%, 0.53%, 0.02% and 1.25% additional watershed land area respectively within the period under study. The extinction of forest evergreen, reduction in other forest land-use types and conversion of other land use types to agriculture in the study area make the soil susceptible to soil erosion, Thus, leading to sediment influx downstream. Hence, the need for urgent afforestation program and terraced farming to reduces soil erosion problem in the study area.
Keywords: agriculture, forest, land use, land cover, SWAT Model and watershed
APPLICATION OF GEOSPATIAL TECHNIQUES IN TRACING THE EVOLUTION AND DEVELOPMENT OF MARKET CENTRES IN GOMBE, GOMBE STATE, NIGERIA
YAKUBU DAN1, YILA C. MAKADI2, BILKISU Y. AHMED3
1,2, &3Gombe State University, Faculty of Science Department of Geography P.M.B 127, Tudun-Wada, Gombe, Gombe State of Nigeria.
This study, “The Application of Geospatial Techniques in Tracing the Evolution and Development of Market Centres in Gombe, Gombe State” employed spatial data and historical written literatures of the state to examine the origin and development of market centres, the proceeding development that led to the current state of market centres as well as contributing factors of distribution. The research revealed that the number of market centres that evolved through the five phases stretching from 1800 to 2017 increased proportionally as population: phase 1 had 2 market centres with 16,000 people, phase 2 had 4 markets with about 25,000 people, phase 3 had 7 markets with 47,000 people, phase 4 had 10 markets with 208,000 people and phase 5 had 16 markets with more than 400,000 people. Also, identified factors that led to the observed growth from above statistics included capitalization of the town as the headquarter of the Emirate and Gombe Division in 1919 and subsequently the capital city of Gombe State in 1996, centrality of the town surrounded by medium and lower order central places, and high number of immigrants from different parts of the state and country at large. The study recommends that growing settlements should observe and monitor the location of their market places so that they conform to the standard of centrality and ease of access to collection and redistribution of goods and services within the market thresholds.
Keywords: Geospatial Techniques, Evolution, Market Centres, Settlements, Population.
PLANNING FOR THE LOCATION OF PETROL RETAIL FILLING STATIONS IN BAUCHI METROPOLIS
1HASHIM ABDULLAHI 2ZAINAB .M. ZAKARI 3ZAINAB .M. DALHATU
1Department of Urban and Regional Planning, Federal Polytechnic Mubi, PMB 35, Adamawa State, Nigeria 2and3Department of Urban and Regional Planning, Nuhu Bamalli Polytechnic, Zaria, Kaduna State, Nigeria
This research focused on planning for the location of petrol retail filling stations in Bauchi metropolis and it was based on the existing 65 inventory of the filling stations in the Metropolis in 2006. Physical spatial observation was carried out to ascertain spatial Planning and administrative predicaments with regards to the planning for the petrol retail filling stations. Both human and vehicular population was projected to determine present and future needs of the metropolis together with photographing for the primary data collection. Simple statistics tool was employed for the data analysis. The study revealed that factors affecting the location and distribution of petrol retail filling stations in Bauchi Metropolis were Traffic flow, Nature of vehicle, Availability of land, Availability of customers, cheap land and easy access to land. The study furthered depicted that regional roads of Bauchi metropolis have the highest number of petrol retail filling stations which includes: Bauchi to Jos 34.38%, Bauchi to Gombe 24.06%, Bauchi to Maidugurri 23.44%Bauchi to Kano 6.25% and Bauchi to Dass/Tafawa Balewa 14.06%. In addition, Makama Ward has the highest records of projected Vehicular population of 2,390 vehicles, Dan Amar Maintain the second position with projected vehicles of 1,614 but Dan Iya ward 1,512 vehicles was recorded. The Study also stated both Spatial and administrative physical planning challenges with regards to planning for petrol retail filling station in the metropolis were identified and recommendations were made based on the identified spatial planning problems.
Keywords: Bauchi Metropolis, Filling station, Roads, Vehicular and Human Population, and Spatial Planning.
APPLICATION OF VALUE MANAGEMENT TO ENHANCE CONSTRUCTION OF RESIDENTIAL HOUSING FOR FEDERAL CIVIL SERVANTS IN NIGERIA
UMESI, R. O.1; & GANIYU, B.O2
1 Department of Quantity Surveying, Federal Polytechnic Bida, 2Department of Quantity Surveying, Federal University of Technology Minna,
Value management techniques have been successfully applied to all types of construction projects from buildings to offshore oil and gas platforms, and for all types of clients from private industry to governmental organizations worldwide. One of the Sustainable Development Goals objectives is increasing access to new technologies to support sustainable development; this has lead to the application of value management to residential housing to ensure sustainable development of affordable housing. In Nigeria, access to affordable housing has largely remained an unfulfilled dream to the vast majority most especially, the middle and the lower class of the society. The gap between the need for housing and the capacity to acquire the desired housing type has led to a demand crisis for affordable housing in Nigeria. In this paper, the concept and benefits of the application of Value Management was explored to enhance affordability of sustainable residential housing for civil servants in Nigeria. The quantitative approach employed was to understand the perception on the benefit of the application of value management on residential project in Niger state. This was done by the use of well structured questionnaire.
Keywords: Affordable housing; construction; sustainability; sustainable residential housing; value management.
GEOSPATIAL ANALYSIS OF PRIMARY HEALTHCARE FACILITIES IN PERI-URBAN AREA OF MINNA, NIGER STATE, NIGERIA
OTARU ELIZABETH OIZA AND ABUBAKAR AHMED SADAUKI
Department of Geography, Federal University of Technology Minna, Niger State, Nigeria.
The mapping of primary healthcare facilities in peri-urban areas of Minna, Niger State was carried out. The objectives were to identify the location of primary healthcare facilities, to evaluate the distribution of primary healthcare facilities in relation to the spatial population pattern of the study area and their corresponding distance, assess the capacities of the primary healthcare facilities in relation to the standards of World Health Organization. GPS coordinates of primary healthcare facilities and questionnaire information were the sources of data for this study while GIS software and Statistical package for social sciences were used in analyzing the data. The results of the coordinate points plotted in ArcGIS 10.5 map revealed the spatial distribution of primary healthcare facilities and their corresponding distance, the results of nearest neighbor analysis indicated that the healthcare facilities are dispersed, it also showed on the capacity level that the equipment’s in the primary healthcare facilities in the study areas are in relation to WHO standard. The Geospatial mapping, Nearest Neighbour Analysis as well as administered questionnaire provides information on the closeness of one primary healthcare to another and to the residents.
Keywords: Peri-urban areas, Primary healthcare facilities, Global Positioning System, ArcGIS and Nearest Neighbor Analysis
SOCIO ECONOMIC IMPACT OF URBAN SPRAWL ON AGRICULTURAL LAND IN LAPAI LOCAL GOVERNMENT AREA, NIGER STATE, NIGERIA
ETUDAIYE MUSTAPHA MUHAMMED, M. A. EMIGILATI
Department of Geography, Federal University of Technology Minna, Niger State, Nigeria.
Urban expansion constitutes one of the key agents of landuse change with the impact felt at local, regional and global levels. This study assesses urban encroachment on agricultural land in Lapai Local Government Area of Niger State, Nigeria using Remote Sensing and Geographic Information techniques. Four imageries of LandSat TM 1988, LandSat ETM 1998 LandSat 7 2008 landsat 8 2018 were processed, classified using supervised classification using ArcGIS 10.4 to assess the total spatial loss of agricultural land to urban expansion. The findings revealed that the study area witnessed a significant reduction and increase in agricultural land and built–up respectively. The socio-economic impacts of urban expansion into agricultural land was derived through the administration of questionnaires to people within the study area, the results gotten showed that the area has experienced an unprecedented rate of urbanization and urban encroachment into agricultural lands which has subjected the area to some negative environmental and socio-economic impacts such as a decrease in the average crop yield, though the impacts are not so severe due to the persistence and emergence of agricultural lands in some areas. It is recommended that urban spreading to agriculture land should be controlled as this will have serious repercussions on food security. Urban expansion cannot be stopped, but with proper management and planning it can be directed in a desirable and sustainable way.
Keywords: Urban expansion, Agricultural land, Remote sensing and GIS, Lapai, Landsat.
THE IMPACT OF MAGA DAM CONSTRUCTION ON THE DOWNSTEAM HYDROLOGICAL SYSTEM, ECONOMY AND SECURITY: A CASE FOR KALA-BALGE AND NGALA LGAs, N. E. BORNO STATE, NIGERIA.
ABBAS, ADAM M. (PhD)
Department of Geography, Federal University Kashere, Gombe-State, Nigeria.
The role of water resources in the economic development of a nation cannot be overemphasized. It constitutes the most important necessities to man. This study looks at the consequences/effects of the Maga Dam construction in the Republic of Cameroon on the development of the downstream areas of Kala-Balge and Ngala Local Government Areas of Borno State Nigeria. The negative effects result from drying of one of the richest sources of Nigerian rivers draining into the Lake Chad. It is called River El-beid and locally known as Ebeji which also forms the larger part of the border between Nigeria and Republic of Cameroon (along the two LGAs) for more than 400 km until Lake Chad. To arrive at results showing the magnitude of the effects, a household survey was conducted in the area 0-5 kilometers away from the boundary. A total of 150 households were considered for the interview survey. Field observation and in-depth interviews were also conducted on some stake holders. The results indicate that, economic activities such as farming, fishing, livestock, tourism, trade and transport/navigation, boat carving industries as well as problem of border porosity and security of the area and Nigeria at large have been affected, with resultant effect of poverty, forced out migration and social vices. It is recommended that, in order to restore the river to its normal state some of the waters of Surbewel should be channeled by construction of a navigable canal 0to River El-beid which could also be dyked through the assistance of Lake Chad Basin Commission and Chad Basin Development Authority (CBDA).
Keywords: Water resource, Boundary, Dam, Downstream, Poverty, Lake Chad
THE ROLE OF TECHNOLOGICAL INSTITUTIONS IN THE PRODUCTION OF SKILLFUL WORKFORCE WITH REFERENCE TO LOWER, MIDDLE AND HIGH-LEVEL MANPOWER
FATIMA BABA CIROMA1, KABIRU SANI DARODA1, STEPHEN ZEMO AUDU1
1Department of Architecture, College of Environmental Studies, Kaduna Polytechnic, Nigeria
Developing Nigeria in both economic and human resource capital represents a recurring theme in both National development and transformation plans of the country over the years. Technical education, with its emphasis on exploration of career options, support of basic academic, leadership and skill provision for industry-defined work represents a viable and urgent alternative in achieving these objectives. The potential of Technical and Vocational education in providing a qualitative national pool of skilled and self-reliant craftsmen, technicians and presents a route to achieving the development plans. This paper studies some of the issues affecting the production of middle level manpower in Nigeria and, reviews existing programmes, challenges and opportunities as they exist. As a general approach, it reviews the subsisting practices in other countries, examines the existing facilities in Nigeria which are charged with producing this middle level manpower and recommends policy approaches which could assist in achieving these objectives.
Keywords: Vocational and technical education, middle level manpower, skillful workforce Nigerian government, technological development, strength sand weaknesses.
PHYSICALLY CHALLENGED AND THE LEARNING ENVIRONMENT IN KADUNA STATE UNIVERSITY, KADUNA.
Department of Architectural Technology CES, Hussaini Adamu Federal Polytechnic, Kazaure, Jigawa State, Nigeria.
Begging, accepted by many as a profession, has become a permanent feature on major streets in Nigeria especially in northern part of the country. Physically challenged people have been to a large extent erroneously certified by the society as the legitimate people to practice alms begging. Once a person is born with any form of disability, the society particularly in Northern Nigeria ‘graciously and steadily’ nurtures such people to a crookedly destined path of begging. This is wrong. Abled people are frown at and deemed lazy when they are seen begging; the same should apply to all including the physically challenged because there is ability in disability. Higher institutions of learning have a duty to define and set good example on how a civil society should be organized and run. This paper seeks to find out how universities and other institutions of learning with emphasis in Kaduna state university, Kaduna are leading the society to accommodate and bring out the best in all people including the physically challenged through adherence to building regulations and provisions. The phenomenological approach for evaluating problem based learning using case study, survey and observation tools were employed. All classes, lecture theatres, libraries, laboratories and hostels were studied. A check list was used to assess if buildings provided for learning can be effectively used by physically challenged students. The research result clearly shows that in Kaduna State University, Tafawa Belawa way, Kaduna most learning facilities do not adhere to minimum standard in building regulations and provisions for the physically challenged students.
Keywords: Building Access, Building Regulations, Disability, Physically Challenged.
PRIORITIZING FACTORS MITIGATING THE IMPLEMENTATION OF SUSTAINABLE PROJECTS IN NIGERIAN CONSTRUCTION INDUSTRY
YAHAYA I1, UMAR I2, USMAN Y.K3 & ISAH B. M4
Department Quantity Surveying, College of Environmental Studies, Hussaini Adamu Federal Polytechnic, Kazaure, Jigawa State.
The construction industry plays a crucial role in the economy of any nation, and its activities are vital to achieving national socio-economic development goals of providing shelter, infrastructure and employment. However, statements as to the poor sustainability nature of construction projects executed in most developing countries have been made in recent times, and the Nigerian Construction Industry is no exception. This research was carried out to study the most severe factors mitigating implementation of sustainable projects within Nigerian Construction industry. The research instrument used was structured questionnaire designed and administered to construction participants in Nigeria. Ten (10) critical factors mitigating implementation of sustainable projects in the entire construction industry were identified from detail review of past literature and all were used in the questionnaires in order to prioritize the factors in the order of their severity within the construction industry. A Total of fifty five (55) questionnaires were distributed to the construction participants; 15 each to Clients and Contractors while twenty five (25) to Consultants comprising of five (5) Quantity Surveyors, Five (5) Architects, Five (5) Services Engineers, five (5) Civil Engineers and five (5) project managers. Thirty nine (39) questionnaires were successfully retrieved representing (71% of the total). The data obtained in the returned questionnaires was used for analysis. Relative importance index method (RII) was used to determine the relative importance indices of the various factors. From the findings made, it was concluded that the major factors mitigating the implementation of sustainable projects in order of their severity are; Lack of government commitment, Lack of owner or developer’s full support for sustainable concepts, the assumption of additional cost of building projects, Lack of financial incentives for construction participants, budget constraints among others.
Keywords: Sustainable development, Construction Industry, Nigeria, Relative Importance Index.
FLEXURAL STRENGTH OF SAW DUST ASH (SDA) CONCRETE CONTAINING VARIOUS PERCENTAGES OF METAKAOLIN (MK) BLEND CONCRETE.
Department of Civil Engineering Technology, School of Engineering, Abubakar Tatari Ali Polytechnic Bauchi, Bauchi State.
Production of cement consumes natural materials leading to environmental concerns in terms of utilization of raw materials and emissions of CO2. Waste materials disposed from industries and or pozzolana materials containing reactive silica or alumina are used in cement. This study investigated the flexural strength of saw dust ash (SDA) concrete containing various percentages of metakaolin (MK) blend concrete. The flexural strength and water absorption of blended concrete were mainly studied. Ordinary Portland cement was replaced with 0%, 5%, 10%, 15% and 20% of metakaolin and 12% constant replacement level of saw dust ash. The beam samples were tested for flexural strength at the curing age of 7days, 14 days, 28 days, 60days, and 90 days. It was observed that the flexural strength of concrete increases with replacement levels of OPC/SDA-MK at higher curing ages. The flexural strength for MK 20% is 0.049N/mm2 which slightly increased. The flexural strength for MK 0% 5%, 10%, 15% and 20% at 90 days are 0.047, 0.045, 0.048, 0.047, 0.048 and 0.049N/mm2respectively. Water absorption of OPC/SDA-MK concrete up to 20% replacement decreased with the increased of curing ages. Conclusion were made that 12% replacement of cement with saw dust ash SDA and 15% replacement of cement by metakaolin is adequate to enjoy maximum benefit of strength gain and also Cement manufacturers could be encouraged to produce cement with SCMs to bring down cost of building constructions and to reduce emission of CO2.
Key words: SDA- saw dust ash, MK- metakaolin, OPC- ordinary Portland cement, SCMs- supplementary cementitious materials, flexural strength, and CO2- carbondi-oxide.
DEMARCATION AND SURVEY OF GOVERNMENT APPROVED LAYOUT NUMBER (YBTP/069/R).
BULAMA A. ABATCHA1, DAUDA A. WAZIRI2 AND RABIU LAWALI3
Department of Surveying and Geo-Informatics, Federal Polytechnic Damaturu. Yobe State
The layout survey was carried out for the purpose of issuance of certificate of occupancy. The project involves the translation of the entire approved layout plan of thirty five (35) plots unto the ground by setting out of plots corner points, beaconing, coordination of the emplaced corner points, and production of a surveyed plan of the layout at a scale of 1:1,500. The Sokkia SET 630R Total Station was used in the setting and the final survey exercises. The final survey plan was produced with the AutoCAD Land Development. A total of 70 beacons were monumented and surveyed in the Layout. The plots are meant to be allocated to individuals after payment have been made for the Issuance of certificate of occupancy and effective housing and physical development of the state capital.
Keyword: Cadastral, Demarcation, Monument
FLOOD INUNDATION MAPPING OF LAGOS ISLAND LOCAL GOVERNMENT AREA OF LAGOS STATE
ADEWARA M. BABALOLA & ODEYEMI K. ABILODUN
Surveying & Geoinformatics Department, Federal Polytechnic, Ilaro, South West Nigeria
Lagos Island is characterized by flooding on a yearly basis. This flooding leads to loss and damage of millions of properties. One of the most extreme flooding that occurred in this location was in July 2012 and July 2017, causing serious damage to both public and private properties. Hence this present study applied the HEC (Hydrological Engineering Centre) modelling packages such as HEC-HMS and HEC-RAS software packages as well as ARCGIS software to simulate flood occurrence in Lagos Island using LIDAR data, rainfall data, land use maps and GPS points as input data. Findings in this study showed that the average flow depths within the study area is 3.2m and over 60% of the Residential and Commercial buildings are at risk. The areas within the city with high risk of flooding were identified from the flood hazard maps that were generated. Three-dimensional model of the location with embedded flood inundation map is also generated for a better understanding of the severity of flooding in the location.
Keywords: Flood Inundation, GIS, HEC-HMS-RAS, Modelling, Risk Assessment
HEALTH AND SAFETY ON CONSTRUCTION SITES IN LOKOJA, KOGI STATE
*ESAN, OLUSEGUN AKINTOMIDE **KOLAWOLE OLAYIWOLA BASHIRU ***KUPOLUYI TEMITOPE O.
*Building Department, the Federal Polytechnic, Idah **Architecture Department, the Federal Polytechnic, Idah ***Quantity Surveying Department, the Federal Polytechnic, Idah
The study investigated the health and safety practice on some selected construction sites in Lokoja Nigeria, the study identified the health and safety deficiencies and compromises on the construction sites. Recommendations are made on ways to avoid the continuous failures and compromises on health and safety on construction sites.
Keywords: Construction, Health, Sites,, Safety, Lokoja.
ASSESSING THE EFFECTS OF RAINFALL VARIABILITY IN PARTS OF BENUE STATE, NIGERIA
1IORNONGO TERSEER, 2T.I YAHAYA, 3OJOYE SAMSEDEEN, 4ELI KOLO TSADO
1, 2&3Department of Geography, Federal University of Technology Minna 4Department of Agriculture, Federal University of Technology Minna
The aim of this study was to investigate the effect of rainfall variability in parts of Benue State. CMAP rainfall data were collected using orbiting satellite for the period of 30 years from 1988 to 2017 over Benue State. Data collected were subjected to various statistical analysis which include Coefficient of Variation which was used to determine the rainfall variability and Precipitation Variability Index (PVI) which was used to show the tendency of drought. The result shows that the mean rainfall distribution is normal since the mean annual precipitation is greater than 1000mm. The precipitation Variability Index in all the selected LGAs within the three zones indicates that the tendency of drought is much higher in the Northern zone of the State followed by the West and the South. Vandeikya LGA in the Western zone have Precipitation Variability Index of 19.50% in August which is an indication of least variability of moisture with high rainfall intensity, it is concluded that, in all the zones in Benue State agricultural activities should be carried out during the month of May, hence the Precipitation Variability Index values in April exceeds 30% which is an indication of higher rainfall variability.
Keywords: CMAP, Drought, Moisture, Precipitation, Variability.