Bollards: Are They Crash Rated?

I recently watched a very interesting webinar presentation about bollard crash rating developed by the US Department of State after 9/11. Reliance Foundry (https://www.reliance-foundry.com/bollard#gref) presented the webinar.  Bollards are rated for their crash resistance at various speeds and how well they stop a semi-tractor with a trailer after possibly overrunning […]

Placing a Road Like a Carpet – Rolls or Squares

We have mentioned in earlier posts that placing an interlocking or paver pavement is labor intensive. The preparation is similar to placing a flexible pavement. The subgrade has to be graded and compacted. An aggregate layer placed and compacted. The difference is an added 1-inch sand layer. Typically, pavers are hand-placed. There are two […]

Traffic Calming

Here is an attractive traffic calming installation using differing natural materials to make a visual barrier; create a rough texture with a slight hump; and increase road noise.  This has a nicer appearance than a yellow speed bump or hump. A raised crosswalk is another calming technique.  The raised sidewalk […]