Current through Register Vol. 49, No. 13, September 23, 2024
Subpart 1.
Generally.
Vehicle and livestock scales installed after December 31,
1985, must be installed on a reinforced, poured, concrete foundation. Scales
may be installed in a concrete pit, according to subpart
2, or above grade level
according to subpart 3 or
4. The foundation must be
designed to support the weight of the scale and the anticipated maximum load on
the scale without significant settling or cracking. Weighing element stands or
bases must be securely bolted to the foundation. Space between a stand or base
and the foundation must be filled with nonshrinking grout.
Subp. 2.
Pit-type scale
foundation.
A pit-type vehicle or livestock scale foundation must meet
the following requirements:
A. the
walls, floors, footings, and weighing element support piers must be reinforced,
poured concrete;
B. the clearance
between the bottom of the weighbridge or other main structural member and the
surface of the pit floor must be at least 48 inches;
C. for outdoor scales, the pit floor must
have an effective drain system so that the pit floor remains reasonably dry and
clean;
D. for outdoor scales, the
tops of the pit walls must be above the existing grade level so that water will
drain away from the scale; and
E.
for outdoor scales, the foundation must extend below the local frost
line.
Subp. 3.
Aboveground scale; concrete pier foundation.
An aboveground vehicle or livestock scale foundation must
meet the requirements in items A to H.
A. The weighing elements must be supported on
reinforced concrete foundation piers.
B. Concrete surface slabs must be poured
independently between the main foundation piers.
C. The end piers of the foundation must have
end walls to prevent fill material from interfering with scale
operation.
D. Where foundation
construction techniques allow, the surfaces of the concrete slabs between the
foundation piers must be sloped in a manner that will prevent water, dirt, and
debris accumulation under the platform.
E. The clearance between the bottom of the
weighbridge or other main structural member and the slab surface must be at
least six inches for vehicle scales and at least 12 inches for livestock
scales.
F. The scale platform,
structural members, foundation surfaces, and surrounding area must be designed
to allow access for cleaning under the scale platform and around all weighing
elements.
G. For outdoor scales,
the tops of the piers and the surfaces of the slab or slabs between the piers
must be above the existing grade level so that water will drain away from the
scale.
H. The piers must extend
below the local frost line.
Subp.
4.
Aboveground scale; floating concrete slab
foundation.
An aboveground vehicle or livestock scale may be installed on
a floating concrete slab foundation. The foundation must meet the following
requirements:
A. The scale weighing
element or elements must be supported on a monolithic, reinforced concrete
slab. The entire slab must be at least 12 inches thick, and must conform to the
scale manufacturer's installation and reinforcing requirements.
B. The foundation must be constructed on soil
that has a uniform natural or engineered soil bearing of at least 1,500 pounds
per square foot. See part
7601.4000, subpart
3.
C. A base of uniform, compacted, permeable
aggregate, at least 24 inches deep, must be installed. The concrete slab
foundation must be poured on top of this base.
D. The top surface of the foundation slab
must be installed above the surrounding grade level so that water will flow
away from the foundation and away from the permeable aggregate base that
supports the foundation.
Statutory Authority: MS s
239.06
