Sponge Playgrounds (Also Known As PIP Rubber)
As a child, certain playgrounds always felt a little more 'luxurious' than others. Some were rock solid and any fall was sufficient to severely bruise any of the little bones that fell in the area.
However, there were others that just felt like sponge. Falls were hardly painless, but they barely caused a scratch when compared to the solid Tarmac versions. The reason this occurred was because they took advantage of Poured-in-Place rubber - although as we'll now find out, there's several other reasons Read more [...]