الفهرس 
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Abstract
It is known that, the neglect of the study of the soil properties and not choosing the right place for construction will cause serious problems of construction that may lead to the collapse of it completely. The present study used the remote sensing technique and geographic information systems, geoelectrical resistivity method, and engineering investigation to achieve the greatest benefit of the study in order to early detect of the problematic soil and the critical locations for building, hence can avoid structural failure. Remote sensing and GIS have shown that, the average elevation of the terrains is 280.8 m above sea level while the average slope of the area is 3º. The results refer that, the topography of the study area is ranged from gentle slope to high slope that representing the central part of the study area. Shaded reliefs images extracted from digital elevation model (DEM) refer that, the main trend of the extracted lineaments head is NE-SW direction. It also revealed that, there are some low zones within the area of study. In order to avoid the construction damage, the best method was chosen to fill these depressions. from the hydrological perspective, the study area is located on a large hydrological basin and sub-basins. The main stream order cuts Bait Alwatan area from south to north. Geoelectrical resistivity soundings indicated that, the first surface resistivity layer of weathered (loose sediments composed of sand and sand with gravels) has resistivity ranging from 110 to 474.7 Ω.m and its average thickness is 1.5 m. The second geoelectric layer has resistivity ranged from 31.9 to 842.7 Ω.m and average thickness of 5 m, while the third layer has resistivity between 67.4 and 454.1 Ω.m and average thickness of 14.4 m and the fourth layer ranging in resistivity from 55.4 to 652 Ω.m and has average thickness 25.2 m. The final geoelectric layer ranging in resistivity from 297.3 to 823 Ω.m and its average depths is 47.9 m. Engineering studies have shown that, the quality of rock ranges from poor to very poor, and the rock strength ranges from weak to medium weakness. The coarse grained layers are a dense sandy soil, composed of sands and sand with percent of gravel, having varying amount of silt. The fine grained soil has been classified as inorganic clay with high and very high plasticity. Its swell is greater than 50%; hence great attention must be given in construction even in case of light construction above this soils type. Based on this comprehensive study, the lowest suitability location for construction is represented at the central part of the area of study, while the highest suitability location is represented at NW direction and upper eastern part of the area