aelwero , 10 months ago

“This is a lightweight “bubbly” form of concrete used widely between the 1950s and mid-1990s - usually in the form of panels on flat roofs, as well as occasionally in pitched roofs, floors and walls. It has a lifespan of around 30 years.”

A concrete panel expected to last 30 years was installed in 1995, in what year should you replace it?

What year math is that you suppose? Third grade? Fourth grade? Just asking…