Civil Engineering Reference
In-Depth Information
Fig. 11.5
An old stone bound
the bottom is well below the frost level. Today, bounds ranging from three to six feet
are used. If a bound is to be set near a driveway, sidewalk or in a lawn it is often bur-
ied so that the top is flush with the ground or a slightly above ground.
An advantage of concrete bounds over stone bounds is that they contain
Steel
Reinforcing Bars
(rebars) so that if buried, they can be found with a metal detector
(Fig.
11.6
). A disadvantage of concrete bounds with rebars is that if they are hit by a
machine such as a snow plow or dozer blade, the rebar tends to hold the bound together
causing it to move substantially. Sometimes the entire bound may be yanked out of the
ground. Stone bounds, or concrete bounds without rebars, may snap off at ground level
leaving the base in its original location. This is more likely if the ground is frozen.
