The same warning is painted directly behind the car as well. What does it mean?
Day 247
What could possibly go wrong?
September 2nd, 2012
I'm walking every street in New York City.
This is the counterpoint to my walk across the US. Instead of seeing a million places for just a minute each, I'm going to spend a million minutes exploring just one place. By the time I finish walking every block of every street in all five boroughs, I'll have traveled more than 8,000 miles on foot — all within a single city. Details!
Email me at matt@imjustwalkin.com
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Maps: Progress | Photos
~9,954 miles walked
Your donations allow me to keep walking full-time. If you think what I'm doing is valuable and you'd like to offer some support, I would be very grateful. On the other hand, if you think I'm a worthless bum, feel free to email me and tell me to get a job, bozo. Both are excellent options!
Am I shallow if I’m seeking a “like” button?
STRUCTUREmag! excellent deep structural engineering cut.
That Hollow Feeling
Milan Vatovec, P.E., Ph.D., Paul Kelley, P.E. and Gustavo Tumialan, P.E., Ph.D.
A city sidewalk might not be as simple as it appears – it depends on your perspective. Many pedestrians do not expect that the common sidewalk they walk on might be hollow. But hollow sidewalks are common in many older cities; the sidewalk was the early loading dock through which the building was stocked with supplies via a sidewalk hatch. In these older buildings, the basement extends beyond the footprint of the building and under the city sidewalks. The “vault” space under the sidewalk ends with a concrete or masonry wall that retains the soil beneath the street. And frequently, the sidewalk over the vault, the only barrier preventing people and vehicles from falling into the basement, is badly deteriorated and unsafe (Figure 1).
Visit website for complete details.