A new tunnel formwork system from Pilosio reduces the time needed for assembly. Made from standard components, this can be used for a wide range of geometries.
A variety of systems are available for quickly and efficiently removing water from roads as Patrick Smith reports
The presence of water in a highway layer reduces the bearing capacity of the road, and in doing so it also reduces the structure's lifetime. Indeed, the recent extremely cold winter in many parts of Europe has shown that in colder climates there is a risk of frost damage when water is present resulting in costly potholes, so drainage systems performing properly are important in road design.
A variety of systems are available for quickly and efficiently removing water from roads as Patrick Smith reports. The presence of water in a highway layer reduces the bearing capacity of the road, and in doing so it also reduces the structure's lifetime. Indeed, the recent extremely cold winter in many parts of Europe has shown that in colder climates there is a risk of frost damage when water is present resulting in costly potholes, so drainage systems performing properly are important in road design.
The world's largest tunnelling machine is completing Italy's important road connection between Bologna and Florence - Adrian Greeman reports For just under a decade a huge programme of highway construction has been underway in the mountainous region between Bologna and Florence, realigning a section of the A1 highway nearly 70km long. The new section, through major tunnels and across high viaducts, will greatly increase capacity on Italy's most important highway.
Tunnelling technology is seeing major developments that will boost construction efficiency - Mike Woof writes
Both in tunnel drilling and TBM systems, new machines are now being built that offer major gains in performance. Sandvik is introducing a number of major new models developments to its tunnelling drill range. Three new tunnelling jumbos are now available that suit different drilling requirements, the DD422iE, DT912D and DT922i.
The firm says that its advanced DD422iE rig offers major advantage
