Method for placing at least one duct/communication cable below a road surface in an area

Method for installing at least one duct/cable in an area for building a distribution network and/or an access network, said area comprising a first layer and a second layer, said first layer being a road layer, and said second layer being a bearing layer for said first layer and being located below said first layer, said method comprising the steps of:

• designing a network layout for a distribution network and/or an access network in said area, wherein said network layout is for a plurality of ducts or cables having at least one size, and wherein said network layout comprises at least one micro trench and at least one splicing point, a branching from said at least one micro trench, and a final destination;
• arranging said plurality of ducts/cables according to said network layout;
• sawing a micro trench in said area through said first layer into said second layer using a sawing machine comprising a diamond saw blade arranged for up-cut rotation so as to remove sawing material from said micro trench, and a stabilizing device positioned immediately behind said diamond saw blade, said stabilizing device having a front part and a back part, wherein the shape of the front part is complementary to the shape of said diamond saw blade, and wherein said diamond saw blade and said stabilization device are arranged so that their respective working depths may be adjusted in order to adjust a laying depth, wherein the working depth for said stabilization device is less than the working depth for said diamond saw blade;
• stabilizing the walls of said second layer in said micro trench by means of side elements of said stabilizing device;
• installing said plurality of arranged ducts/cables in said micro trench, by means of guiding means comprised in said stabilizing device, into said second layer below said first layer according to said network layout, wherein said stabilizing device and said guiding means are dimensioned according to the number and size of ducts/cables for said network layout and wherein each guiding means is arranged to guide one or more ducts/cables for said network layout and wherein each guiding means is arranged to guide one or more of said ducts/cables for said distribution and/or access network so as to be located side by side and/or on top of each other in said micro trench;
• successively routing each one of said plurality of ducts/cables to its endpoint, the endpoint being any of said splicing point, said branching and said final destination according to said network layout;
• filling said micro trench with filling material after said plurality of arranged ducts/cables have been successively routed;
• and
• sealing said micro trench with sealing material so as to restore said surface layer.