CIVIL ENGINEERING

CIVIL ENGINEERING

AN ASSESSMENT OF CROSS VENTILATION IN PUBLIC BUILDING

CHAPTER ONE INTRODUCTION One of the basic necessities of life which are food, shelter, water and Air is of great importance to humans most especially in public buildings where there is high traffic and congestion most of the time. Research has shown that people spend about 90 percent of their time indoor since the majority …

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THE DESIGN AND CONSTRUCTION OF ELECTRICAL CENTRIFUGE

Abstract This work focuses on the design and construction of a conical screen centrifugal filter for the separation of groundnut oil slurry. The major component of the machine is the rotary conical screen which separates the pure groundnut oil from the slurry via centrifugal filtration. Sludge particles were removed from the slurry through the open …

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CONSTRUCTION OF AN AUTOMATIC STREET LIGHTING SYSTEM

CHAPTER ONE BACKGROUND OF THE STUDY 1.0   INTRODUCTION Street lighting is referred to as road lighting or public lighting which includes the lighting of pedestrian walk ways. However, the fast growth in electronics technology has lead to the designing of electronics components, such as integrated circuit and semi conductor devices which need to operate on …

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REVISED BETA CRITERIA FOR THE CBR AIRFIELD PAVEMENT DESIGN METHOD

Background: In recent years, civil aviation has experienced intense growth, regional or peripheral airports have been built or expanded to operate new routes. In the Portuguese case is no different, the two main airports (Porto and Lisbon) are close to the limit. Furthermore, there is a certain degree of isolation in the Central and Interior …

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 RIPARIAN HYDRAULIC GRADIENT AND STREAM-GROUNDWATER DYNAMICS IN TWO STEEP HEADWATER STREAMS  

Patterns of riparian hydraulic gradients and stream-groundwater exchange in headwater catchments provide the hydrologic context for important ecological processes. Although the controls are relatively well understood, their dynamics during periods of hydrologic change is not. We investigate riparian hydraulic gradients over three different time scales in two steep, forested, headwater catchments in Oregon (WS01 and …

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QUANTIFYING FLOW RESISTANCE IN NATURAL ENVIRONMENTS, (A STUDY OF UWAUDUAK ENGINEERING COMPANY UYO, AKWA IBOM STATE)

Quantifying flow resistance is important for understanding and predicting energy and momentum transfer processes in natural environments such as ice-melting in the polar ice sheet and sediment transport in mountain streams. Flow resistance represents the retarding forces experienced by flow and the associated energy loss (dissipated through heat) in these systems. Flow resistance is mainly …

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MEDIUM-RANGE ENSEMBLE FLOOD FORECAST INUNDATION MAPS: THE CASE OF THE TIDAL DELAWARE RIVER NEAR PHILADELPHIA

We investigate the ability to enhance flood inundation medium-range (0-7 days) forecast maps through weather ensembles and statistically water surface elevation (WSEL) postprocessing. To generate the flood forecast maps, a one-dimensional hydraulic model (HEC-RAS) is coupled to a regional hydrological ensemble prediction system (RHEPS). The RHEPS is in this case comprised by: i) weather ensembles …

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ADVANCING A REGIONAL HYDROLOGIC ENSEMBLE PREDICTION SYSTEM

ABSTRACT There is great potential for using ensemble weather forecasts to improve hydrological predictions across spatial and temporal scales. To realize this potential, research is needed to formulate, assemble, and assess a full (i.e. accounting for the complete hydrometeorological forecasting chain) ensemble hydrological system and test how different system components can best contribute to improving …

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ALTERNATIVE METHODS FOR ESTIMATING SAFETY EFFECTIVENESS ON RURAL, TWO-LANE HIGHWAYS: CASE-CONTROL AND COHORT METHODS

ABSTRACT There is a need to better understand the safety implications of geometric improvements on rural, two-lane highways. Funding for transportation safety improvement projects is often limited so it is important to estimate the relative safety effectiveness of each proposed improvement and select those that are likely to produce the greatest benefit. Safety, efficiency, and …

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