https://hddnews.pl/en/ Trenchless technology and HDD news. en Tue, 29 Sep 2026 21:13:00 +0000 HDDNews.pl build.py https://hddnews.pl/en/2026-09-29-tampa-mikrotunelowanie/ https://hddnews.pl/en/2026-09-29-tampa-mikrotunelowanie/ Tue, 29 Sep 2026 06:00:00 +0000 Microtunnelling & Pipe Jacking A steel casing with a 62.5-inch outside diameter was driven 2,773 ft (845 m) by microtunneling as part of the I-4/I-275 interchange rebuild in Tampa, Florida. The trenchless work followed one of the city's most heavily used routes. https://hddnews.pl/en/2026-09-29-przecisk-stalowy-sila-odksztalcenie/ https://hddnews.pl/en/2026-09-29-przecisk-stalowy-sila-odksztalcenie/ Tue, 29 Sep 2026 06:00:00 +0000 Research A team from China proposed a method for calculating the jacking force of straight steel pipes that accounts for circumferential pipe deformation and redistribution of earth pressure. The usual rigid-pipe assumptions lead to errors in large-diameter design. https://hddnews.pl/en/2026-09-29-nagrody-roku-trenchless/ https://hddnews.pl/en/2026-09-29-nagrody-roku-trenchless/ Tue, 29 Sep 2026 06:00:00 +0000 Events The magazine Trenchless Technology has announced the 33rd round of its Projects of the Year. A CIPP rehabilitation scheme in Winnipeg took the prize in the rehabilitation group, while a microtunneled outfall in Oregon City won among new installations. https://hddnews.pl/en/2026-09-29-leczna-relining-modulowy/ https://hddnews.pl/en/2026-09-29-leczna-relining-modulowy/ Tue, 29 Sep 2026 06:00:00 +0000 Trenchless Rehabilitation The Municipality of Łęczna has announced a tender for the repair of a storm sewer network at the junction of Staszica and Stefanii Pawlak streets. The scope includes trenchless rehabilitation of DN400 and DN500 concrete sewers using modular relining with annular space grouting. https://hddnews.pl/en/2026-09-29-istt-no-dig-auckland-program/ https://hddnews.pl/en/2026-09-29-istt-no-dig-auckland-program/ Tue, 29 Sep 2026 06:00:00 +0000 Events The International Society for Trenchless Technology has released the full programme of the International No-Dig Auckland 2026 conference, set for 27-29 October. It is the first time the event comes to New Zealand and it falls in ISTT's 40th anniversary year. https://hddnews.pl/en/2026-09-29-hddsuite-projektowanie-przewiertow/ https://hddnews.pl/en/2026-09-29-hddsuite-projektowanie-przewiertow/ Tue, 29 Sep 2026 06:00:00 +0000 Equipment & Technology The Polish application HDDSuite runs a trenchless crossing design through twelve steps in a single data model, from georeferencing and boreholes to pull-in force, hydrofracture risk and comparison with steering data. Its calculations follow ST-IGG-3301:2021 and established industry publications. https://hddnews.pl/en/2026-09-29-cga-koszt-uszkodzen-sieci/ https://hddnews.pl/en/2026-09-29-cga-koszt-uszkodzen-sieci/ Tue, 29 Sep 2026 06:00:00 +0000 Horizontal Directional Drilling The Common Ground Alliance has released state-by-state loss estimates for the United States. Nationwide damage to underground infrastructure is valued at USD 83.2 billion, with repairs accounting for only 5.9 percent of that sum.