ABSTRACT: In spite of the huge environmental and energy problem in Nigeria, designers have not seen the need for a shift from their traditional method of designing buildings. Green building which is also known as sustainable buildings are buildings which represents friendly structures that have little or no impact on the environment. This study focuses on examining the level of awareness and practice of green construction in Lagos state with a view to improve the practice by...

ABSTRACT: Value management is widely accepted as a technique in achieving value for money. In accordance with the stipulation of the Public Procurement Act in Nigeria that value for money practices should be followed in procuring public assets and services, this study aims to assess the Nigerian construction industry’s readiness to adopt value management process....

ABSTRACT: In spite of the huge environmental and energy problem in Nigeria, designers have not seen the need for a shift from their traditional method of designing buildings. Green building which is also known as sustainable buildings are buildings which represents friendly structures that have little or no impact on the environment. This study focuses on examining the level of awareness and practice of green construction in Lagos state with a view to improve the practic...

Background of the study: Over the past ten years, there has been a spectacular increase in the usage of the Internet, and more specifically the World Wide Web. This rise has had an influence on practically every aspect of daily life in industrialised cultures. In Nigeria, like in many other nations, the people's living conditions constitute one of the most significant components of their existence. This is also the case in many other nations. Historically...

INTRODUCTION: Sieve equipment is a type of machine used to separate solid particles. Naturally, its manner of separation is comparable to slow sand filtration; nevertheless, sieving is a piece of unit operation that is carried out. According to Terrence (2018), the sieving equipment works by enabling solid particles of various sizes to pass through the pores or aperture, which is made up of ordered, placed sets of sieves in accordance with th...

ABSTRACT: Variability poses a significant challenge within the building business. differences in construction projects are a common occurrence, with the degree of these differences varying significantly across different projects. Consequently, the customer was compelled to exceed the initial projected budget in the majority of instances. Occasionally, conflicts and avoidable delays arise as a result of modifications. The primary objective of this study was to...

INTRODUCTION: This project was obligated to present in o n e volume of the fundamental and practical information in the field of comparing the strength of blocks made from: cement and laterite soil, cement and red earth and sand, red earth and lateritic soil and mud blocks fired in the kiln which may be useful to people involved in civil and structural engineering and particularly those that found pleasure in the design and construction of buildings, bridges and culverts and...

Abstract: The significant demand for sandcrete blocks in Nigeria, driven by the need for physical infrastructure development, renders it a pertinent material within the building and construction sector. Consequently, because to the excessive reliance on river sand in construction endeavours, it becomes imperative to explore other materials that provide equal strength for diverse applications, such as sandcrete blocks. This study aims to assess the strength of sandcrete b...

INTRODUCTION: The construction industry has evolved into an ever more intricate web of linkages between ever more rapid processes, choices, and actions. On the other hand, there is a movement in the direction of more sustainable practices (Boussabain, 2022).

A construction project, like any other project, consists of many phases of development that are distinct from one another in terms of the amount of time and financial resources that are required...

Abstract: Several studies on construction craft skills have identified a number of problems including ineffective training as responsible for shortages of craftsmen in the construction industry. In Nigeria, the problem of training craftsmen has been attributed to lack of a harmonised training framework. This research therefore examined existing training frameworks in craft skills training institutions and assessed the performance of the products of those inst...

Abstract: The study intends to investigate the impact of budgeting and budgetary control in construction project delivery in Nigeria. The purpose is to specifically identify the major causes of budgeting and budget control practices in by quantity surveyors in the construction companies in owerri using megastar technical and Construction Company Ltd, Aleed Construction Company, Anasami Construction Nig Ltd, Sametech Construction and C &C Construction Co. Ltd as case study...

CHAPTER ONE

INTRODUCTION

Background of the study: Concrete’s versatility, durability, elasticity, sustainability, and economy have made it the world’s most widely used construction material. About four tons of concrete are produced per person per year worldwide and about 1.7 tons per person in the United States. The term concrete refers to a mixture of aggregat...

Abstract

Human resources are the common thread of any organization. Effective management is very crucial and central to achieving the organisational goal, and motivation is a process that begins with a deficiency or physiological need that activates a behaviour or motivation aimed at inciting a goal. In Nigeria, common worker performance problems in construction have been attributed to unfair wages, poor safety at construction sites, a lack of clear career paths, diminishing wo...

ABSTRACT

Variation is one of the most severe problems in the construction industry. This variation occurs in every construction project and the magnitude of these variations varies considerably from project to project. As such, the client had to spend more than what was initially estimated in most cases, sometimes, disputes and unnecessary delays occur due to variations. This study focused to investigate causes and effects of design variation in roa...

ABSTRACT

The structure of the Nigerian construction industry is very complex in nature and consists of a wide range of different parties. Despite involvement of all stakeholders on construction projects in the study area projects still encounter challenges in terms of performance due to poor stakeholder management. The aim of this study is to analyze stakeholder management in construction projects in Abuja, with the view to improve construction projects performance. This study ident...

ABSTRACT

This study investigates the economic application of scheffe’s model in compressive strength optimisation of rice husk ash-cement concrete. Physical properties of the aggregates such as specific gravity, bulk density and sieve analysis were determined. Specific gravities of fine and coarse aggregates were 2.64 and 2.66 respectively. The bulk densities were 1745kg/m3 and 1660kg/m3 respectively. From the sieve analysis test, the sand belonged to zone 2 and well graded wi...

ABSTRACT

Human resource is the livewire of any organisation. Its effective management is very crucial and central in the achievement of organisational objective and motivation is a process that starts with a physiological deficiency or need that activates a behaviour or a drive that is aimed at a goal incentive. In Nigeria, the common problems of workers’ performance in construction have been traced to unfair wages of workers, poor safety in construction sites, lack of clear-c...

ABSTRACT

Security and safety are important factors to be considered in every design. This has in recent times become an issue of concern especially in Northern Nigeria. This research sought to assess the effectiveness of the security measures employed in hotel designs by identifying available passive security features within existing hotel layouts and proposing a design that employs these measures in addition to others discovered in literature. The study adopts the principles of cri...

ABSTRACT

The non-implementation of risk management techniques constitutes a lot to most of the project failures encountered nowadays. This leads to variations, incessant claims due to time loss by the contractor and loss of significant stakeholder’s value. This study assessed risk response techniques for construction projects under Design Bid Build and Design & Build (DBB and DB) procurement methods in Abuja, with a view to enhancing the level of understanding and implemen...

ABSTRACT

The search for an alternative to the conventional way of treating soil for use in road work, informed laterite soil sample classified as A-7-5(11) on AASHTO soil classification system, collected from a borrow pit at Shika, along Zaria-Funtua road in Kaduna State of Nigeria was pretreated with heat and stabilized with bitumen. Sample of the laterite soil subjected to heat treatment at temperatures of 37oC (room temperature), 200oC 400oC and 600oC for one hour

HDFK...

Abstract

Marginal laterites A-7-6(14), improved with hydrated lime was stabilized using bituminous emulsion with a view to improving the strength properties of the soil. The preliminary investigation conducted on the natural lateritic soil showed that the soil belongs to the CH group using the Unified Soil Classification System or A-7-6(14) soil group using the AASHTO soil classification system. The MDD decreased with higher additive blend as it decreased from 1.67 to 1.49 mg/m3 at...

Abstract

Economic development in every nation is based on construction projects undertaken through several types of contracts. However, construction industry is suffering from delay phenomenon. The causes and effects of delay in construction projects seem critical and if not handled appropriately, it could result to wastage and underutilization of resources. This has contributed to negative impact on stakeholders in the construction industry. This research aimed to appraise the main...

ABSTRACT

The Niger-Delta region of Nigeria has a chequered history of human and material exploitation as well as environmental degradation and underdevelopment. As the heartbeat of Nigeria’s economy being the source of most revenues accruing to the federation in terms of oil mineral resources, the efforts at addressing its teeming challenge of development has taken difficult very dimension, moving from one government policy to another. Ensuring sustainable development in the N...

INTRODUCTION

As the growing population of human race widens the gulf between energy supply and energy demand, the imbalance in energy availability sent researchers into excavating for a way of settling this age long squabble. A lasting solution is vested on alternative use of the renewable energy source, a project that is yet to be widely applied. Hence, the continuation of the unsettled yearns for sufficient power. Consequently, the power lines are frequently over loaded resulting...

ABSTRACT

The lack of information on bus travel time in Makurdi metropolis to enable trip makers plan for journeys is seen as a challenge in recent times. This study developed a multiple linear regression model for predicting bus travel time along bus routes within the metropolis and this was achieved throughmeasurement of   the physical characteristics of the roadway, identification of those factors that constitute impediment to intra-city bus travel time, measurement of i...

ABSTRACT

It is common knowledge that the end user of stream flow data may necessarily not have any prior knowledge of the quality control measures applied in their generation. Thus, this study provides an intuitive attempt to provide an independent quality indicator to boost the confidence in the use of stream flow data by developing regional flow duration curves for selected ungauged station of the upper Niger River Basin, Nigeria. Toward this end, stream flow data...

1.1Background of Study

Total Quality Management (TQM) is considered as an approach of continuous improvement in all quality aspects of the whole processes, goods, services and employees within the firm, and it aims at adding value to the delivered products to customers through continuous development of firms’ processes and systems (Hill, 2008). It is a philosophy of continuous organizational development through the employment of customer satisfaction and by basing it on the pe...

ABSTRACT

A model of transitional probability matrix for Mechanistic-Empirical Pavement Design was developed with the aim of tarnishing the traditional method obtained from the judgment of an expert panel. The model was developed using fatigue and rutting as the critical factors in pavement failure. Model performance was assessed using first order reliability method (FORM) with the concept of genetic search algorithm developed with Matrix Laboratory(MATLAB). The proposed model allowe...

ABSTRACT

A clayey soil collected at Barkindo along Lamurde-Adamawa road, Numan Local Government area of Adamawa State, Nigeria, was stabilized with 0, 2, 4 and 6% cement which was admixed with 0, 10, 20, 30 and 40% ceramic waste dust (CWD) each. Index properties test and microstructural tests were conducted on the untreated clay soil while compaction tests and unconfined compressive strength tests were carried out on the untreated clay and clay soil admixed with varied composition o...

ABSTRACT

This study investigates the suitability of crushed coconut shell (CCS) and polyethylene terephthalate (PET) as partial replacement of coarse aggregate in concrete. The PET was crushed mechanically to sizes between 0-10mm while the CCS was crushed manually to sizes between 12.7-19.5mm. Various tests were carried out to ascertain the physical and engineering properties of the aggregates used in this study. Sieve analysis was carried out on all the various aggregates used in t...

ABSTRACT

Economic recession occurs when “economic activity declines, in other words, growth become negative “and it is associated with low- level consumer spending. A recession also known as go-slow in terms of Gross Domestic Product (GDP) or national outputs has led to increase in unemployment, a decrease in wages, a high level of inequality, and an increase in government borrowing. Fall of Nigerian currency, so much reliance on oil, and lack of diversification led Nige...

ABSTRACT

Concrete is a combination of cement, fine and coarse aggregates and water, which are mixed in a particular proportion to arrive at a particular strength. The cement and water react together chemically to form a paste together with the aggregate particles. The mixture sets into a rock-like solid mass, which has considerable compressive strength but little resistance in tension. In this research, concrete was properly mixed using salt water at 35g/l and water only respectivel...

ABSTRACT

Effect of vertical rectangular openings on the flexural strength of reinforced concrete beam is presented. Twelve reinforced concrete beams of dimension 200m x 230mm x 700mm with different sizes of rectangular openings, 25mm x 35mm, 50mm x 60mm and 75mm x 85mm which are placed at 150 mm from the supports, were cast. After curing, these beams were tested under centre-point loading system using universal testing machine and the flexural strength were determined. The results s...

ABSTRACT

The aim of this study was to determine the effect of sprouting on the amylases activity and functional properties of ten FARO rice varieties. The FARO rice samples selected randomly were used for this study, and these include FARO 15, 16, 20, 22, 30, 45, 47, 55, 61 and 62. They were sprouted for twelve (12) days according to standard procedures, in order to determine the amylase activities and their functional properties. The alpha, beta and glucoamylase activities of the F...

ABSTRACT

The problems of low mechanical properties of composites reinforced with fibres of natural origin have been a source of concern for researchers. Also, the insufficient utilization of bagasse fibres due to its moderate strength has further reduced its potentialities in composite production hence the need to hybridize with other fibres.

In this work, the effects of hybridization on the physical and mechanical properties of bagasse/sisal/coir fibre-reinforced epoxy co...

ABSTRACT

The topic of this research is effects of standard costing on the profitability of a manufacturing company. The purpose of this study was to discover if the application of standard costing techniques have any effect on profitability, to explore the relationship between standard costing and the profitability of manufacturing companies and also to determine whether standard costing techniques and principles are being adopted and practiced in Nigerian manufacturing companies (N...

ABSTRACT

Health and Safety (H&S) training is one of the most widely adopted practices for improving workplace safety. Existing H&S literature focuses more on the training of workers in construction firms of developed nations. This leaves out issues of H&S training of workers in the construction firms of developing nations such as Nigeria. The result of this is the problem of poor safety performance in the form of higher rate of accident, fatalities and injuries to worker...

ABSTARCT

The intrinsic suitability of some lateritic soils as materials for construction of layers for flexible pavements is evaluated herein. The pavement layers assessed were the base course, sub-base and sub-grade. Laboratory results of samples from these layers show that the CBR values of the sub-grade materials met the requirement while about 40% and 70% of the locations for sub-base and base materials respectively, presented CBR values less than those specifie...

ABSTRACT

In this research, experimental research was carried out to assess the flexural and shear capacities of RC beams strengthened with different amount of carbon fibre reinforced polymer laminates at the tension face and U-strips. Twelve rectangular RC beams of cross-sectional dimension 150x150x750mm were cast and three were un-strengthened and used as reference beams and the remaining nine were strengthened with different amount of CFRP varying from single to triple layers and...

SUMMARY

The design and construction of temporary military structures, built to house personnel in theater, have changed little since World War II. While lightweight, rapidly deployable, and quick to erect, these gage metal or wood frame structures provide minimal ballistic and blast protection for occupants. Cross-laminated timber (CLT) is a new building material gaining attention in the U.S. construction industry for its many unique characteristics. This prefabrica...