COURTESY OF INSITE SOFTWARE New vectors Software displays multiple views and grabs selected contours. A new release of an earthwork estimating tool should make tracing contours on most site plans obsolete. Replacing tracing, the software allows a user to click on the end of a line to extract vector data from CAD files and—remarkably—many commonly distributed PDFs.InSite Software released SiteWork 11 on Jan. 24. The product's new automated, vector-based contour-tracing function is quite different from the contrast-based automated tracers available in previous versions, which are easily fooled by intersecting lines. By importing a CAD file or first-generation, vector-based PDF and
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.