Vinci Construction has expanded its Latin American ground technologies portfolio by acquiring Grupo TDM’s geosynthetics division in Peru, a regional supplier of geotextiles, geomembranes and geogrids for mining, road and hydraulic works. The deal gives Vinci direct control of design–supply–install capability for reinforced soil walls, basal reinforcement and lining systems on high-embankment highways and tailings storage facilities in the Andes. For geotechnical contractors and designers, this signals stronger OEM-backed support for geosynthetic solutions on steep slopes, soft-ground foundations and aggressive seismic conditions in the region.

Inter‑helix spacing for helical piles and anchors is traced from early empirical rules of thumb (typically 3× helix diameter) to current design approaches based on cylindrical shear and individual bearing models. The review compares performance implications of close spacing (overlapping stress bulbs, higher installation torque, potential group behaviour) versus wider spacing (reduced interaction, deeper embedment, more steel), and links them to torque‑to‑capacity correlations. For practitioners, it clarifies when legacy spacing rules remain adequate and when soil type, load regime, and installation constraints justify project‑specific optimisation.

Tasmania’s Government has let a contract to dismantle and compact the early‑20th‑century Goods Shed at Macquarie Point to clear the site for a $1.13 billion multi‑purpose stadium in Hobart. The former rail and port freight hub will be packed down to formation level, providing a prepared platform for the stadium’s deep foundations, services corridors and future transport interfaces. Geotechnical teams will need to manage demolition spoil, variable fill and potential contamination typical of historic industrial waterfronts before main works can proceed.