
BEAM & ANCHOR SYSTEM

DESCRIPTION:
The beam and anchor system consist of a poured in place reinforced
concrete beam. The new beam is to be installed along the water
side of the seawall, normally at mid point between the top and
bottom of the existing seawall. The beam is attached to the seawall
by a system of new anchors spaced 8 foot on center along the seawall.
PROS:
Structurally supports a larger portion of the seawall than just secondary
anchors.
Requires no maintenance.
When a beam and anchor system is installed properly on a seawall that
is in fair condition, and still has adequate penetration into the ground,
the beam and anchor system can prevent a wall failure for 20 years
or more.
CONS:
During the period the beam and anchor system is in service, it is to
be expected that the existing seawall cap may need replacing.
NOTE: With a properly installed beam and anchor system in place, the
cap is not relied upon as much for structural support, and can be replaced
at the owners convenience.
GUIDELINES:
Before choosing a beam and anchor system, the seawall should have adequate
penetration, and be in fair condition.
Severe horizontal cracks, or movement of the seawall may indicate
that the seawall needs more structural support than the beam and
anchor system.
New anchor systems should follow the same guidelines as secondaries,
but be spaced 8 foot on center.
A full 45 degree angle should be installed at the bottom of the new
beam. This 45 degree angle is important as it deflects wave
action and acts as noise abatement.
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