منابع مشابه
Characteristics of Equipment Planning for Multi-Crane Building Construction Sites
This paper purports to provide answers to the following questions with regard to multi-crane building construction sites: (1) Do such construction sites differ from smaller sites only in magnitude, or are there unique characteristics that stem from the size of the site and the multitude of cranes? (2) Is equipment planning for such projects similar to that of projects serviced by a small number...
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There are analytic methods for designing protective barriers however, they lack sufficient efficiency and considering the NCRP (National Council on Radiation Protection and measurements) reports, designing mechanical protective barrier in order to protect the initial x-ray radiation and absorption of the ray quality of such radiation is different. In this study, computer software was designed t...
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Awkward postures during the oper ation of heavy construction equipment are a consequence of improper cab de sign and work procedures. Poor visi bility of the task, limited room in the cab, excessive forces required to operate levers/pedals, and improper seat designs are some of the characteristics of a poorly designed cab. If not controlled, awkward posture of any body part can result in in...
متن کاملA Sway Reduction Controller For Construction Crane
A tower crane can be reduced the sway oscillation easily by controlling the rotation acceleration. With the proposed open-loop fast control method which is operated by controlling acceleration, the sway angle of suspended load can be maintained during the movement as well as reduced oscillation during and at the end of movement. In this paper, we design and produce a scaled tower crane with a s...
متن کاملDevelopments in Heavy Construction Equipment
H IST O R Y O F D E V E L O PM E N T An opportunity to discuss the development of any product must include a bit of history so that having observed where we have been one may have a clearer perspective of where we are and may be going. This discussion will try to capture all of these facets. Construction projects of one type or another date back to times before recorded history. M an’s hands we...
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ژورنال
عنوان ژورنال: JOURNAL OF THE JAPAN WELDING SOCIETY
سال: 2012
ISSN: 0021-4787,1883-7204
DOI: 10.2207/jjws.81.112