The use of high-strength concrete (HSC) has been widely accepted by designers and contractors in reinforced concrete structures, especially heavily loaded column of high-rise building and bridges. To study the strength and deformability of HSC columns subjected to eccentric loading, nine columns were tested under eccentric loading and one column only was tested under axial loading. The investigated parameters were concrete compressive strength, slenderness and rectangularity ratios, and load eccentricity. The concrete compressive strength ranged from 36.0 to 75.0 MPa and the slenderness ratio was ranged from 6.67 to 10.0 while the considered eccentricities ratios ranged from 0.0 to 0.80. Also, comparison between experimental and analytical study was carried. The results indicated that increasing concrete compressive strength resulted in increasing the column strength capacity. While increasing the eccentricity are resulted in decreasing the column strength capacity. Also the comparison between experimental and analytical study indicated that both ACI 318R-14 and ECP 203-07 codes are acceptable and valid to determine both the load and the moment capacity of such columns subjected to eccentric loading if take into consideration the additional moment induced due to column deformations.

The use of high-strength concrete (HSC) has been widely accepted by designers and contractors in reinforced concrete structures, especially heavily loaded column of high-rise building and bridges. To study the strength and deformability of HSC columns subjected to eccentric loading, nine columns were tested under eccentric loading and one column only was tested under axial loading. The investigated parameters were concrete compressive strength, slenderness and rectangularity ratios, and load eccentricity. The concrete compressive strength ranged from 36.0 to 75.0 MPa and the slenderness ratio was ranged from 6.67 to 10.0 while the considered eccentricities ratios ranged from 0.0 to 0.80. Also, comparison between experimental and analytical study was carried. The results indicated that increasing concrete compressive strength resulted in increasing the column strength capacity. While increasing the eccentricity are resulted in decreasing the column strength capacity. Also the comparison between experimental and analytical study indicated that both ACI 318R-14 and ECP 203-07 codes are acceptable and valid to determine both the load and the moment capacity of such columns subjected to eccentric loading if take into consideration the additional moment induced due to column deformations.

The use of high-strength concrete (HSC) has been widely accepted by designers and contractors in reinforced concrete structures, especially heavily loaded column of high-rise building and bridges. To study the strength and deformability of HSC columns subjected to eccentric loading, nine columns were tested under eccentric loading and one column only was tested under axial loading. The investigated parameters were concrete compressive strength, slenderness and rectangularity ratios, and load eccentricity. The concrete compressive strength ranged from 36.0 to 75.0 MPa and the slenderness ratio was ranged from 6.67 to 10.0 while the considered eccentricities ratios ranged from 0.0 to 0.80. Also, comparison between experimental and analytical study was carried. The results indicated that increasing concrete compressive strength resulted in increasing the column strength capacity. While increasing the eccentricity are resulted in decreasing the column strength capacity. Also the comparison between experimental and analytical study indicated that both ACI 318R-14 and ECP 203-07 codes are acceptable and valid to determine both the load and the moment capacity of such columns subjected to eccentric loading if take into consideration the additional moment induced due to column deformations.

Groundwater in Assiut governorate has a particular importance where it is the second source for fresh water used for drinking, agricultural, domestic, and industrial purposes. Three hundred and thirty five wells were available during the period 2006 to 2009, and were subjected to analysis for chemicalcharacteristics. These data has been used to conclude two main results; the first one is preliminary evaluation of suitability of groundwater for drinking and irrigation purposes by comparing those parameters with world health organization (WHO) standards and Egyptian standards. the second one is building the correlation matrix between the groundwater quality parameters which are major ions, EC, TDS, SAR, Na%, RSC, TH, KI, PI, MH, CAI, and C.R. with comparing chemical parameters with WHO (1996) and Egyptian standards for drinking, it shows that concentrations of Na+, K+, Ca2+, Mg2+, Hco3-, SO42−, and Fe are lower than the permissible limits in 80% of well s. Groundwater wells were classified according TDS as about 93 % of wells have TDS less than 3000 mg/l, thus groundwater is suitable for irrigation.

Groundwater in Assiut governorate has a particular importance where it is the second source for fresh water used for drinking, agricultural, domestic, and industrial purposes. Three hundred and thirty five wells were available during the period 2006 to 2009, and were subjected to analysis for chemicalcharacteristics. These data has been used to conclude two main results; the first one is preliminary evaluation of suitability of groundwater for drinking and irrigation purposes by comparing those parameters with world health organization (WHO) standards and Egyptian standards. the second one is building the correlation matrix between the groundwater quality parameters which are major ions, EC, TDS, SAR, Na%, RSC, TH, KI, PI, MH, CAI, and C.R. with comparing chemical parameters with WHO (1996) and Egyptian standards for drinking, it shows that concentrations of Na+, K+, Ca2+, Mg2+, Hco3-, SO42−, and Fe are lower than the permissible limits in 80% of well s. Groundwater wells were classified according TDS as about 93 % of wells have TDS less than 3000 mg/l, thus groundwater is suitable for irrigation.

Groundwater in Assiut governorate has a particular importance where it is the second source for fresh water used for drinking, agricultural, domestic, and industrial purposes. Three hundred and thirty five wells were available during the period 2006 to 2009, and were subjected to analysis for chemicalcharacteristics. These data has been used to conclude two main results; the first one is preliminary evaluation of suitability of groundwater for drinking and irrigation purposes by comparing those parameters with world health organization (WHO) standards and Egyptian standards. the second one is building the correlation matrix between the groundwater quality parameters which are major ions, EC, TDS, SAR, Na%, RSC, TH, KI, PI, MH, CAI, and C.R. with comparing chemical parameters with WHO (1996) and Egyptian standards for drinking, it shows that concentrations of Na+, K+, Ca2+, Mg2+, Hco3-, SO42−, and Fe are lower than the permissible limits in 80% of well s. Groundwater wells were classified according TDS as about 93 % of wells have TDS less than 3000 mg/l, thus groundwater is suitable for irrigation.

Groundwater in Assiut governorate has a particular importance where it is the second source for fresh water used for drinking, agricultural, domestic, and industrial purposes. Three hundred and thirty five wells were available during the period 2006 to 2009, and were subjected to analysis for chemicalcharacteristics. These data has been used to conclude two main results; the first one is preliminary evaluation of suitability of groundwater for drinking and irrigation purposes by comparing those parameters with world health organization (WHO) standards and Egyptian standards. the second one is building the correlation matrix between the groundwater quality parameters which are major ions, EC, TDS, SAR, Na%, RSC, TH, KI, PI, MH, CAI, and C.R. with comparing chemical parameters with WHO (1996) and Egyptian standards for drinking, it shows that concentrations of Na+, K+, Ca2+, Mg2+, Hco3-, SO42−, and Fe are lower than the permissible limits in 80% of well s. Groundwater wells were classified according TDS as about 93 % of wells have TDS less than 3000 mg/l, thus groundwater is suitable for irrigation.

This paper presents a Genetic Algorithm (GA)- based method to determine the location and size of DG sources in distribution systems using single DG placement algorithm for determining the locations at first. Then, the GA is utilized to determine the global sizes of DG sources which minimize single- or multi-objective function related to these systems. The influence of active- and reactive-power injection on the sizing and placement of DG sources is investigated. The predictions of the proposed method as regards the sizing and placement of DG sources are compared with those obtained before using particle swarm optimization at steady weather conditions.

This paper presents a Genetic Algorithm (GA)- based method to determine the location and size of DG sources in distribution systems using single DG placement algorithm for determining the locations at first. Then, the GA is utilized to determine the global sizes of DG sources which minimize single- or multi-objective function related to these systems. The influence of active- and reactive-power injection on the sizing and placement of DG sources is investigated. The predictions of the proposed method as regards the sizing and placement of DG sources are compared with those obtained before using particle swarm optimization at steady weather conditions.

This paper presents a Genetic Algorithm (GA)- based method to determine the location and size of DG sources in distribution systems using single DG placement algorithm for determining the locations at first. Then, the GA is utilized to determine the global sizes of DG sources which minimize single- or multi-objective function related to these systems. The influence of active- and reactive-power injection on the sizing and placement of DG sources is investigated. The predictions of the proposed method as regards the sizing and placement of DG sources are compared with those obtained before using particle swarm optimization at steady weather conditions.