Route planning analysis in Geographical Information System (GIS) provides strong decision support for users in searching optimal route, finding the optimal path is an important advanced analysis function in GIS. This paper presents the problem of selecting route to connect two locations in Baghdad city; Alkadomiyah and Algria'at. Four alternatives were investigated using a multi criteria approach and spatial decision support system, (SDSS) that will assist a decision-maker, to select the optimal route fora new road path. In ARCGIS 9.2, spatial analysis has been used to carry out the search strategy. In general, the goal of this study is to develop a (GIS) - based model to determine suitable route. Therefore, the required data for the proposed model building were identified by using, land use, transportation maps, aerial photographs and ographic features then reviewed for model development requirements. Four factors were considered; Geotechnical, Geometrical, social and economical factors for multicriteria evaluation to select the best route alternative. ARC GIS 9.2 software was used for the analysis and model building requirements. In actualizing the aim, satellite ages of the study area was provided while the land-use map was obtained fromDesign Office-Amanat Baghdad. The land-use over the study area was classified into eight different classes. A Digital Elevated Model (DEM) over the study area was downloaded from the Global Mapper Software, used to derive the slope map over the area of study and the Analytic Hierarchy Process (AHP) was used in weighting the ions. Finally, the case study demonstrated that GIS based on multi-criteria approach is recognized to be used as a tool for the optimum route selection by considering the factors affecting on the decision-maker route selection. Furthermore, saving of money, time and effort.

Route Selection --- Geographical Information System (GIS) --- AHP --- Land

This paper studying some of the Mechanical properties of High Performance Concrete re-tempered by using G51 after 90 minute waiting at 3 different ambient temperature (23, 40, 57)starting from lab temperature to high temperature during casting which may simulate summer degree in Iraq. The comparative made with reference concrete in the same environment. HPC produced by adding High Reactivity Metakaolin after burning. Compressive strength, Ultrasonic Pulse Velocity, Splitting tensile and Flexural test was made for both reference and HPC mixes.

In this study, analysis of retaining structure by using the software PLAXIS is adopted and the deformation that occurs in the body of the retaining structure after applied the failure load detected; the failure loads are obtained from the series of laboratory tests. Then, the cofferdam is modelled by using finite element code PLAXIS. The laboratory tests have been carried out two diaphragm cells of different width to depth ratios, and used three different soil materials (subbase, sand passing No.4, river sand, and clay). The analysis includes studying the effect of height, width, and embedment depth. The input data of soils that are used in this software are getting from these laboratory tests. The comparison is done between the deformation that is obtained from the actual experimental and the software PLAXIS. It can be seen that the displacement for the retaining structure place on ground surface in the laboratory test equal to 0.00322m and the displacement that obtain from PLAXIS equal to 0.00372m, and the displacement for retaining structure with embedment depth in laboratory test equal to 0.00321m and the displacement from software PLAXIS equal to 0.00263m Thus, the results from these two studies have been found closed to each other.

The use of carbon fiber reinforced plastic (CFRP) strips to enhance the behavior of local stability for thin-walled tubular steel columns has been investigated experimentally. Tubular steel columns specimens are made from welding thin plates at their edges. The type of strengthen carbon fiber is a unidirectional woven fiber mat of mid strength which is a product of Sika coded as SikaWrap -230C. The CFRP is fixed using a resin Sikadure-330. The study is focusing on the local stability of such members. Many pattern of wrapping are suggested herein. Recommendations have been drawn for the best pattern chosen to obtain the most efficient and economic strengthen pattern.

Thin-walled; CFRP; Tubular Steel; Axial Load

This research includes study the effect of adding plastic chips resulting from cutting the plastic beverage bottles (which is used in Iraqi markets now) as fiber added to the polymer concrete and study there effects on some properties of polymer modified concrete like compressive strength and flexural strength. Two different percentage of fiber by volume equal to (1.6% and 3.25%) were used to made mixes. A reference mix was also made. SBR polymer was added as percentage of cement weight equal to (10%) to all concrete mixes. Results proved that , improvement in mechanical properties with an increasing of fibers percentage by volume . An improvement in flexural strength (modulus of rupture ) appeared more clearly . The maximum increasing in the value of 28-day modulus of rupture equal to (24.4%) for PMC mix with fiber percentage (3.25%), whereas the ximum increasing in compressive strength was equal to (4.1%) for the same mix. No clear different in density are notes.

The research solve problems of welding defects for dust perception in AL Janoob cement factory .Assembly of steel structures type carbon steel DIN St37by using manual metal arc welding process and electrode type low hydrogen ESAB 48.00 equivalent to American welding society AWS E7018. From visual inspection to assembly appeared many welding defects. In this research used liquid penetration methods helped to detection of fine defect and crack opening to surface that cannot be detection by visual inspection .where fined many types of welding such as(under cut ,spatter, porosity, nonmetallic inclusion, under fill, excessive reinforcement ,surface roughness, arc strikes) defects due to pin holes restricted in welding joint (appear by given cross section in many welding joint by visual inspection and liquid penetration also we don’t using other method of inspection because acceptable requirement only visual and liquid penetration) and others because used of high welding current and welding travels speed. These problems solved by removing welding defects and re-welded by using drier electrode (250°C for 4hr) and using the proper welding current and speed.

This work deals with the improvement of surface quality, microstructure of the aluminum alloy ingot by electromagnetic casting using finite element method with the help of Ansys program. Magnetic flux density and magnetic flux density gradient are used as indicators for uniform temperatures distribution and new liquid metal flow. Two models are simulated in this study; the first one represents a solid cylinder with a single coil where the effects of current intensity and frequency on the melt metal are studied. The second model is a hollow cylindrical with outer/inner coils. The effects of current intensity, due to the interaction between the outer and inner coil are studied. The results of the first model simulation indicate three stages with the current increasing. The first one near the center of the ingot enhanced approximately homogeneous behavior, while the increasing occurs gradually in the second and third stages. Also with decreasing of frequency the magnetic flux density at the center of ingot increasing. The second model results of hollow ingot show that the magnetic flux density increases linearly with outer coil current increasing from (85 – 380) A at the same inner coil current value, and the homogeneous behavior enhanced in 0.55 outer/inner coil current ratio also illustrates homogeneous behavior at different current values but with the same ratio.

Electromagnetic Casting --- Controlling Heat and Flow --- Surface and