tower cranes are major and expensive equipment that are extensively used at building construction projects and harbors for lifting heavy objects to demand points. the tower crane locating problem to position a tower crane and supply points in a building construction site for supplying all requests in minimum time, has been raised from more than twenty years ago. this problem has already been so...

Ammonium Nitrate (AN) prilling Process is nonlinear and non stationary in nature. Due to uncertainty created by nonlinear conditions like temperature rise due to exothermic reaction in the neutraliser, level in the evaporator, velocity of the cooling air in prilling tower, temperature and moisture content of prills and size of the prills. Due to these difficulties the degree of automation is qu...

Wind affects adversely the cooling tower thermal performance. A field investigation was carried out to study the thermal performance of Heller cooling towers under wind conditions, involving measurement of wind velocity and its direction around the cooling tower, and obtaining water flow rates and temperatures at the cooling tower inlet and outlet. Results show that air suction at the tower top...

At present, the drill-and-blast method is still one of main construction means in road tunnel excavation process. When penetrates underneath sensitive structures such as high-voltage transmission towers, blasting and supporting parameters must be strictly controlled to ensure stability safety surface structures. In this paper, numerical simulations based on a large-section shallow buried projec...

A support tower is the main structure which would support rotor, power transmission and control systems, and elevates the rotating blades above the earth boundary layer. A successful design should ensure safe, efficient and economic design for the whole wind turbine system. It should provide easy construction and easy access for maintenance of the rotor components and sub-components. UHPC mater...