Engineering-geological characteristics of the main lithologica1-genetic rock complexes on map sheet 13-321 Svojšice

Geoscience Research Reports 34, 2001 (GRR for 2000), pages 123–129

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Abstract

Area of the map sheet is situated on the N margin of the Kutná Hora plain which tilts into the Nymburk basin. The bedrock comprises rocks of the Kutná Hora crystalline complex (migmarites, onhogneisses, paragneisses, amphibolites) bang at places overlain by relicts of Cretaceous rocks (sandstones, sandy marls). The best foundation soil will be the rocks of the cry stalline complex. The rocks are mostly covered by loess of 1-10 m in thickness. They also crop out on slopes of erosional stream valleys, i. e. in areas unsuitable for construction works. The terrace sediments are also largely covered by loess. The foundations of buildings that put higher strain on foundation soils are to be located beneath the loess deposits preferably on the crystalline rocks (R^ = 4-8 MPa) or on their weathering products (R^ = 175-275 kPa) or on the local outcrops of terrace deposits (for sands of class.Sl-S4 R* = 225-500 kPa. for gravels G1^G3 R^ = 450-800 kPa). This article also provides a detailed study of geotechnical properties of loess and fluviatiJe deposits (sec Figs. 1 and 2 and Tab. 2) occurring in the map sheet area.