Meridian 1505 SC, Руководство пользователя

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04.2020 3-3
Owner’s Manual: Corrugated Hopper Combos
®
The following information provides specifications
and general guidelines for construction of
concrete slabs for supporting bins.
It is very important that close attention be given
to site preparation and soil conditions in order to
provide a good base for the concrete slab.
Items to be aware of include but are not limited
to the following:
1. Soil Conditions:
Sod and other organic material must be
removed before laying down the gravel fill.
Positive drainage must be provided to drain
excessive moisture away from the concrete
slab.
The concrete slab is designed for load
stresses on soils with minimum allowable
soil bearing capacity of 1500 psf.
The engineer is not responsible for concrete
slab performance on soils with lower than
specified bearing capacity or soils that are
unsuitable for supporting a concrete pad.
Soil conditions should be assessed on the
basis of soil tests, or of the performance
history of similar structures in your local
area.
2. Slab Structures:
The following specifications must be followed
to construct a concrete slab to meet the load
and stress carrying requirements:
- The concrete must have a minimum 28
day strength of 3000 psi (1361 kg).
- Use sulphate resistant cement where
required by soil conditions.
- Do not pour concrete on frozen ground
or in an excavation that contains ice,
snow, excessive moisture or when the air
temperature is below 4°C (40°F).
3. Foundation Specifications:
a. All foundations must be designed on
leveled soil with a bearing capacity of
3,000 psf (14,646 kg/m²). When in doubt,
consult a local engineer or architect.
b. All soil or organic material on the site of
the foundation must be excavated and
replaced by porous frost-proof material
to provide proper draining under
foundation and reduce frosting problems
(gravel, sand, ballast, crushed stone).
This underlying basis is then compacted
and covered with polyethylene plastic
which acts as a moisture barrier.
c. Once the forms have been prepared,
begin the placement of reinforcement
rods in the foundation (see foundation
drawing details). The reinforcement
rods offer their greatest strength when
they have been joined together, either
by weld or wire. 6 x 6” (15.24 x 15.24
cm) wire mesh or 10M (#3) at 12” O/C
each way covering the entire area of
the foundation, completes preparation
before beginning concrete pouring.
d. Concrete must have a minimum
compressive strength of 3,000 psi (20.7
MPa) after 28 days.
e. Approximative concrete volume
quantities found in the corresponding
table.
f. Foundation surface must be level.
Columns must be shimmed in uneven
circumstances.
g. Follow general concrete best practices
and guidelines. Wait a minimum of 7
days to install the bins on concrete. It
is recommended to wait 28 days until
filling the combo hopper bin, to ensure
full concrete strength is achieved.
3.3 CONCRETE SLAB CONSTRUCTION