Specialist contractor · Hamburg
Civil works, FTTH network construction, fibre installation and rapid charging parks – with our own crews from Hamburg-Bergedorf. Working in civil engineering since 2011.
Standard cross-section
This is what a cable route looks like cut open: surface, base course, backfill, sand bed – with duct bundle and cable inside. Our crews build every one of these layers themselves.
01 · Civil works
Breaking up, excavation, shoring. Then backfilled and compacted in layers.
02 · FTTH · Fibre
Microduct bundle in the sand bed, warning tape above. Later we blow in the cable and splice in the street cabinet.
03 · E-mobility
The cable route runs to the charger's foundation. Installation and commissioning of the station follow.
04 · Surface
Paving or asphalt reinstated. In the end, all that remains is a clean seam.
Bill of quantities
Items as they appear in your bill of quantities. “Enquire” carries a trade's items straight into the form.
Station 0+000Trade 01
Trenches, house connection trenches, hand excavation, traffic management and surfaces – with our own equipment and crews.
Station 0+300Trade 02
Microduct bundles, house connections and building transfer points: the passive fibre infrastructure from the street cabinet to the basement.
Station 0+600Trade 03
Blowing microcables, splicing in street cabinets, closures and transfer points, testing and documentation.
Station 0+900Trade 04
Rapid charging parks from the cable route to commissioning – trained by the manufacturer for rapid charging stations.
Großhansdorf · 20 September 2022
Surface reinstated, site handed over.
Site diary
Entries from our photo documentation – with date and place, as network operators require.
Splice tray in the street cabinet
Enlarge photo: Splice tray in the street cabinetTesting at the distribution cabinet
Enlarge photo: Testing at the distribution cabinetBuilding a rapid charging park
Enlarge photo: Building a rapid charging parkRoute closed, asphalt reinstated
Enlarge photo: Route closed, asphalt reinstatedOpen trench with duct bundle
Enlarge photo: Open trench with duct bundleDuct coils and compactor along the route
Enlarge photo: Duct coils and compactor along the routeMicroduct bundle in the sand bed
Enlarge photo: Microduct bundle in the sand bedCapacity
Kalwer Netzbau was founded in Bergedorf in 2011 as a civil works contractor. Trenches and cable routes grew into fibre house connections, fibre installation and rapid charging parks – the photos in the site diary show the sites of recent years.
We build with our own crews and equipment, for network operators, general contractors, municipalities and charging infrastructure operators in Hamburg and the surrounding area.
Site board
Send us your bill of quantities, route plan or simply location and scope. We will get back to you personally.