Resources for the Future Pizer and Kopp. 3. cost to the economy.5 This is the notion of cost most often described by economists (e.g., Harberger 1971; Diamond and Mirrlees 1971). Defining and estimating Ci ()az, is far from trivial.
For stepping stones that are going to see a lot of use, you should consider using reinforced concrete so that your stepping stones are more durable. This type of concrete also sells at most hardware stores, often under the names gravel mix reinforced or fiber reinforced premixed concrete..
PRECAST STEPS. CHOICES: Precast concrete steps by Steps Plus offer a variety of attractive entrance possibilities. If one of the numerous standard sizes is not appropriate for your particular situation, a custom unit can be made. Units can be stacked and embedded into sloped grade for terrace entrances that make getting up a steep hill a breeze.