Soil class overview map for earthworks according to DIN18300:2012-09 (BACKGROUND) 1 : 50 000 - Highest soil class from 1 to 2m

Description

Since 2015, according to the VOB or DIN 18300:2016-09, project-specific homogeneous ranges have to be defined instead of the previously generally defined soil classes. For these homogeneous ranges, the properties and characteristic values specified in accordance with DIN 18300:2016-09 and their range must be specified, which may require targeted field and laboratory tests. As a rule, homogeneous ranges can only be defined with the planning and the information on process technologies. Since the ‘floor classes according to DIN 18300:2012-09’ were used in many existing planning/construction projects and are still used in old projects, the floor class overview map according to DIN 18300:2012-09 is presented further for a transitional period. For the planning, calculation and billing of earthworks, the upcoming sediments and rocks were divided into so-called soil classes in accordance with the General Technical Contract Conditions for Construction Services (ATV) in the Procurement and Contract Regulations for Construction Services (VOB). For earthworks and rockworks in accordance with DIN 18300:2012-09, the soil class classifications contained in this DIN applied. Soil class 1: Topsoil Soil class 2: Flowing soil types Soil class 3: Easily soluble soil types Soil class 4: Moderately detachable soil types Soil class 5: Difficult to soluble soil types Soil class 6: Easily soluble rock and comparable soil types Soil class 7: Difficult to remove rock For preliminary planning purposes, maps of the soil classes for earthworks according to DIN 18300:2012-09 were derived by the LBEG on a scale of 1:50,000 to a depth of 2 m (from GOK) from the soil map of Lower Saxony 1:50,000 (BK50) that is available nationwide in Lower Saxony. The area units shown in BK50 are based on a soil profile typical of the area. The soil types contained therein were assigned corresponding soil groups according to DIN 18196, soil classification for structural purposes. The soil groups and solid rocks were assigned to the corresponding soil classes according to the classification criteria of DIN 18300:2012-09. The highest soil class in each case is shown in the depth profiles: 0 m to 1 m, as well as 1 m to 2 m and the prevailing soil classes (weighting according to thickness, max. 3 classes with the same weighting) in the depth profiles:0 m to 1 m, 1 m to 2 m, and 0 m to 2 m. The actual ratios may differ from the scale-based homogenized map representation. For example – in the floodplain diments of the Elbe, Leine and Weser (floor classes 2 and 4) – locally small block layers are known, which would be assigned to soil classes 5 or 6. It should be noted that the "Soil class overview map for earthworks according to DIN 18300:2012-09 1:50 000" cannot replace a geotechnical survey of the subsoil according to DIN EN 1997 2:2010-10 with supplementary regulations DIN 4020:2010-12 and national annex DIN EN 1997 2/NA:2010-12.

Resources

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0 https://nibis.lbeg.de/net3/public/ogc.ashx?NodeId=461&Service=WMS&Request=GetCapabilities&

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