What I did: I made the detailed design of the replacement by dynamic pipe bursting of a DN600 (24″) sewer concrete pipe with a DN800 (32″) HDPE pipe; I coordinated all the geological/geotechnical preliminary survey and I also made the detailed design of the bursting-expanding head, tailored shaped to work with a Tracto Technik TAURUS rammer (24″). The expander has an outside diameter of 1000 mm. The soil was sand with coarse to very coarse gravel.
LARGE DIAMETER DYNAMIC PIPE BURSTING FOR SEWER REPLACEMENT
What I did: I made the detailed design of the installation of pressure and gravity sewer pipes by directional drilling; I carried on the training of the technical personnel (engineers, supervisors and operators). I developed a dedicated and complete HDD pit launched installation system for the connection of houses to the sewer mains. I also wrote two technical standards: the first for preliminary underground mapping and the second for the construction of house connections by using pit launched HDD machines.
What I did: I made the detailed design of the rehabilitation, by thermal and UV CIPP, of DN1200 and DN1000 (48 and 40 in) sewer mains for a total length of 220m, at the Petrochemical Plant of Porto Marghera, Italy; detailed design of the rehabilitation, by thermal CIPP, of DN1200 (48″) sewer mains for a total length of 1.250 m, in the cities of Scafati, Pompei e Sant’Antonio Abate, Italy.
DESIGN OF THE REHABILITATION OF LARGE DIAMETER SEWER MAINS BY CIPP
What I did: I made the detailed design and project management of the rehabilitation, by UV-CIPP, of air-conditioning pipes DN350, laid under runways, at the international airport of Fiumicino Leonardo da Vinci (Rome, Italy).
UV-CIPP AT THE INTERNATIONAL AIRPORT OF ROME FIUMICINO
What I did: I made the detailed design of o channel crossing, by HDD, for the installation of a pressure sewer main for a total length of 320 m (1.000 ft); this project was part of a specialized training program that I carried out with the engineering personnel of the company and that led to the completion of the project of installation of the whole sewer main, entirely made by HDD, for a total length of 5,9 km (3,7 miles), divided in 21 HDD crossings.
DETAILED DESIGN OF A SEWER MAIN INSTALLATION BY HDD AND TRAINING OF THE ENGINEERING PERSONNEL
What I did: I wrote the whole know-how of the company in an internal handbook containing all the instructions concerning production procedures, calculation methods and in-situ procedures of the CIPP technology. I also organized and carried out the specialized training for engineers and operators of Soncini’s licensees.
What I did: I made the design of the installation by HDD, in medium to hard and high abrasive sandstone, of a pressure water HDPE pipe, DN630 mm (25 in), for a total length of 530 m (1,740 ft) along an uphill drill path, for a mini hydro-power plant.
What I did: the R&D for the improvement of the Cement Mortar Lining (CML) technology and the detailed design and manufacturing supervision of motorized lining machines.On the application side I made the detailed design of the rehabilitation, by CML, of existing DN1000 (40″) and DN 1200 (48″) steel water mains, for a total length of 3.000 m (9.800 ft), in the City of Milano, Italy. Thanks to CML technology the Client, Metropolitana Milanese Spa, saved more than 80% of construction costs and up to 98% of earth-moving compared to a traditional open-trench replacement.
What I did: I made the project management and the supervision of the installation, by HDD, of three HDPE DN 560 (22 in) pressure sewer pipes under the Foglia river, Pesaro, Italy. Three directional pilot bore, with an interaxis of just 1,5 m, along a drill path with a very sharp bending radius (70 m), were successfully drilled under the river bed, facing challenging soil conditions, with big boulders and blocks of stone in a matrix of silt and clay. Although the three pilot bores were perfectly completed, on the first alignment, after completed the first final reaming at 700 mm, the first pull-back failed due to the collapse of underground unstable big blocks of rock. Despite the prohibitive soil conditions we successfully completed the pullback of the two remaining product pipes, achieving a remarkable result in a very difficult HDD work.
HDD RIVER CROSSING WITH SHARP BENDING RADIUS IN VERY DIFFICULT SOIL CONDITIONS
What I did: I worked for the main contractor MC Scarl – Cooperativa MUCAFER Scpa, as the specialized advisor for the HDD operations in the insulation of two urban landfills, for the environmental securing of the area. In less than one year approximately 60 km (37 miles) – corresponding to more than 500 horizontal directional boreholes – were drilled through soft to hard limestone rock in order to carry out underground injections to create a bottom screen below the garbage level (total value of the HDD installations: €14M). This was the biggest project of ever for a landfill insulation made by HDD. The specialized subcontractor for HDD and soil treatments was TREVI Spa.