gabocom Products and solutions Chapter III Direct burying Direct burying 69 SPEEDPIPE BUNDLES FOR OPEN TRENCH In case of rocky or stony subsoil, the trench bottom must be excavated at least 0.15 m deeper and the excavation must be replaced by a stone-free layer (sand 0-2, with maximum grain size Ø 2 mm). After laying under tension, the duct zone must be backfilled with sand up to 10 cm above the bundle peak (see ZTV-TK network 10 / 11). speedpipe ground bundles (SRV-G tc) are typically laid in open trenches. Due to the variety of individual duct dimensions of the speedpipe ground and their combination within the duct system, capacity reserves for the future are taken into account. SPEEDPIPE BUNDLES FOR MOLE PLOUGHING The installation of speedpipe bundles ground (SRV-G tc) by plowing methods is typically applicable when there is no paved surface, such as in the countryside, in open areas along roads or on soft, non-stony soils with obstacles. It is also used when underground infrastructure is mapped to prevent damage. The typical laying depth is about 1 m and a laying speed of up to 5 km/day can be achieved. SPEEDPIPE BUNDLES FOR WATER DRILLING (HDD) This installation technique is used for crossing areas where open cut construction is not possible, such as rivers, railroad lines and highways. It combines rotation of the drill bit, pushing and lifting movements, and liquefaction in the borehole between two shafts. speedpipe bundles ground (SRV-G tc) of the appropriate size and configuration are pulled into the borehole. SPEEDPIPE BUNDLES FOR TRENCHING MILLING This installation method enables effective use in urban areas or along roads made of concrete, asphalt or gravel. Cut or milled slots are produced. Distances of up to 3 km are possible. Direct buried speedpipe ground bundles are specially designed for micro-trenching and can be used universally (horizontal/vertical installation).
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