M.Sc. Tezi Görüntüleme
In Turkey, it has been frequently met with roof damages and collapses due to snowloads. Most important reason of this is that the design snow loads have not being
determined correctly. Optimum design roof snow load is determined by multiplyingground snow load with conversion coefficients that can be obtained according to the
factors effect the accumulation of the snow on the roof.The aim of this study is to constitute a ground snow load map for Turkey, to compare
the conversion coefficients from American ANSI/ASCE 7-98 with those from Turkishcodes, and to suggest some revisions of Turkish codes if necessary.
In this study, 50-year mean recurrence interval (MRI) ground snow loads for 100DMI (State Meteorological Service) stations located in Turkey, were determined with
snow data collected from the stations using the latest developed statistical analysismethods. Ground snow load map of Turkey was constituted using GIS (Geographically
Information System) techniques in order to obtain a representation of the variation of theground snow load in the region using 50-year snow loads determined for each station. Roof
snow loads for gable roofs types were derived using the conversion coefficients fromANSI/ASCE 7-05, TS 498 and TS 7046.
According to the ground snow load map constituted and the results obtained in thestudy, it can be concluded that ground snow loads suggested by TS_498 for Turkey, are
mostly unsafe, and TS_7046 that suggest statistical analysis only to evaluate ground snowloads is not economic for each case.
Key Words: Ground Snow Load, Roof Snow Load, Statistical Analysis, GIS, TS 498,TS 7046, ANSI/ASCE 7-05