A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Terrain evaluation for assessment of highways in the mountainous eastern mediterranean of Lebanon
Abstract Infrastructural development is time consuming and costly, especially for highways in rugged mountainous terrains which are typical of the Eastern Mediterranean. Doing it properly requires an economic and time effective approach. The Australian P.U.C.E. (Province. Pattern, Unit. Component Evaluation) terrain evaluation system is such an approach. It proved very efficient in evaluating the terrain of the mountainous Chouf area in Lebanon. This helped to assess a 18 km stretch of highway. The smallest land division in the system serving the highway project is the Component level. The study involves the use of aerial photos, and checking representative field stations along the highway. Surficial geology, geomorphology and engineering geological characteristics constitute the basic data used. Twenty nine Components are obtained and quantified in terms of slopes, soils types, land use and vegetation association. The highway is bordered mostly by steep slopes with gradients in the range 50–90 percent. They are often covered by mass movement colluvial soils indicating general instability. There are sixteen soil types of various mixtures from clays to gravels showing a wide range of consistency limits. Similarly, vegetation density and type vary with the different soils and slopes with which they are associated. Rock formation characteristics and the effects of water induce additional instability problems. The final assessment of the highway is made by finding its suitability over ten segments delineated according to dominant land use. Input factors consisting of geology, topography, erosion, hydrogeology, structural geology, soils, vegetation, cost and man's activities are weighted over each highway segment. The aggregate total of weights, ranging from less than 17 to 26, are split into five suitability categories. The least suitable category, total less than 17, covers almost 40 percent of the highway which means it needs major maintenance works.
Terrain evaluation for assessment of highways in the mountainous eastern mediterranean of Lebanon
Abstract Infrastructural development is time consuming and costly, especially for highways in rugged mountainous terrains which are typical of the Eastern Mediterranean. Doing it properly requires an economic and time effective approach. The Australian P.U.C.E. (Province. Pattern, Unit. Component Evaluation) terrain evaluation system is such an approach. It proved very efficient in evaluating the terrain of the mountainous Chouf area in Lebanon. This helped to assess a 18 km stretch of highway. The smallest land division in the system serving the highway project is the Component level. The study involves the use of aerial photos, and checking representative field stations along the highway. Surficial geology, geomorphology and engineering geological characteristics constitute the basic data used. Twenty nine Components are obtained and quantified in terms of slopes, soils types, land use and vegetation association. The highway is bordered mostly by steep slopes with gradients in the range 50–90 percent. They are often covered by mass movement colluvial soils indicating general instability. There are sixteen soil types of various mixtures from clays to gravels showing a wide range of consistency limits. Similarly, vegetation density and type vary with the different soils and slopes with which they are associated. Rock formation characteristics and the effects of water induce additional instability problems. The final assessment of the highway is made by finding its suitability over ten segments delineated according to dominant land use. Input factors consisting of geology, topography, erosion, hydrogeology, structural geology, soils, vegetation, cost and man's activities are weighted over each highway segment. The aggregate total of weights, ranging from less than 17 to 26, are split into five suitability categories. The least suitable category, total less than 17, covers almost 40 percent of the highway which means it needs major maintenance works.
Terrain evaluation for assessment of highways in the mountainous eastern mediterranean of Lebanon
Khawlie, M. R. (author) / A'war, R. (author)
1992
Article (Journal)
Electronic Resource
English
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
Terrain evaluation for assessment of highways in the mountainous eastern mediterranean of Lebanon
| Online Contents | 1992