There have been many important developments in road building equipment in recent years; possibly the greatest progress has been made with earth-moving equipment. The size and mobility of earthmoving equipment have been developed to such an extent that pro­ duction has been increased tremendously on the average road con­ struction project. This has had a definite effect on the cost of road work ...

Raising of problem. Innovative technologies in construction include 3D printing objects for various purposes. At the heart technology is principle layer-by-layer creation a solid model. This based on use printers, which are divided into printers that print entire building and create separate structural elements installation objects. By design, flight type (mainly form bridge structures) with ca...

there have been few longitudinal studies on sick building syndrome (sbs), which include headache, fatigue, and runny nose. we considered effect of sick building syndrome with illnesses like headache, fatigue and runny nose. thus, we designed a questionnaire and asked from male of dormitory residence. questions of the questionnaire were more about known symptoms of buildings (headache, fatigue, ...

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...

This paper presents an analytical method for evaluating the throughput of a production line composed of two reconfigurable machines separated by a finite capacity buffer. This means that each machine is composed of essential and non essential equipment. The failure of any essential equipment induces the shutdown of the entire machine. The failure of the non essential equipment implies the conti...