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1. Structural Steel Supports (Click Images for Larger View)
Structural steel supports for each bin system are designed by a professional engineer with in-house CAD drafting and engineering support. Flexibility in design permits multilevel floor elevations to support machinery and provide easy access for servicing.
Lemanco bin support structures are fabricated for bolted erection and designed to match-mate with Lemanco bins. Lemanco bin systems are provided with anchor bolt locations and column loadings for the concrete foundation design. Attention to detail in both engineering and manufacturing assures faster field erection.
Chief can also design your foundation and assist in finding a geotechnical engineer to prepare the soil test.
2. Hoppers:
Standard hoppers are one-piece, 60 degree corner draw, with an 18" x 18" opening. Options available include side and center discharge with various degrees of slope. Discharge openings can be designed to meet any requirements, including "square to round" discharge, or "pant leg" double discharge. Sight glass and bin indicator mounting stubs are optional. Hoppers can be designed to receive live bottom equipment including screw feeders. Two-piece hoppers are available upon request. Lemanco hoppers have a uniquely formed base angle that supports the entire perimeter of the hopper and rests on the structural beam grid.
Lemanco hoppers include internal chamfer sections at each corner, which eliminates 90 degree corners and facilitates product flow. Hopper design is based on product weight, flow characteristics, abrasiveness and the total capacity of the bin.
Hoppers are shop coated with two mils of exterior primer, with a standard linseed oil interior coating. Optional coatings are available, including food grade epoxy coatings after blasting. Hoppers may be recessed within the bin compartment, or fabricated to comply with various elevations. These features give Lemanco Bin Systems a superior advantage in hopper design.
3. Sidewalls
Exterior sidewalls are G90 galvanized steel standard zinc coated from the mill, double row punched for rigidity during filling and emptying of compartments. Galvanized sidewalls are specially packaged at the factory to allow air circulation to prevent oxidation of material during transit and storage. Internal common wall partition sheets are Hot Rolled Carbon Steel, with the exception of the top four (4) tiers which are galvanized. This provides protection to the exposed internal partition sheets when the angle of repose does not allow stored products to cover the upper sidewalls. The sheet gauge is determined by product density and bin capacity.
4. Reinforcement Members
Exterior bin reinforcement members are made from heavy galvanized steel. Horizontal members are cold formed into a sloping hat section that bolts into the double lapped side wall.
Vertical intermediate columns and end columns are cold formed from galvanized steel. All exterior walls are galvanized construction to ensure years of maintenance free operation. Interior supports include vertical corner chamfers that extend from top of hopper to the roof.
Lemanco corner chamfers are a standard patented ventilation feature found only on Lemanco Bin Systems and perform a fourfold purpose:
Chamfers form a four-sided strengthening column at every four compartment intersection. Chamfers serve as a ventilating shaft, keeping stored products aerated. With tumbling products, chamfers provide an escape vent for trapped air, preventing an intense vacuum which could result in collapsed sides and roof, or a damaged hopper. Chamfers eliminate 90 degree corners which can cause product hang up, resulting in product contamination. Internal horizontal reinforcing members have a minimum 60 degree slope which assists product flow and adds structural integrity to the bin wall.
Standard interior reinforcing members are formed from ASTM-569 carbon steel. All reinforcing members are designed to meet American Iron and Steel Institute "Specifications for the Design of Cold-Formed Steel Structural Members" - latest edition.
5. Roof
Standard roof sheets consist of Hot Rolled Steel, painted "Light Gray Enamel", sized to fit, for field welding to roof support members.
Optional roof designs: Decking and curb forms to accept concrete or tread plate. The roof deck is designed to support substantial machine loads.
Each compartment has a 20" x 26" manway/filter media with bird screen and an 8", 10", or 12" flanged spout inlet. Manways are complete with inspection port, vent, and filter. Options available: larger manways with vents, or sealed, pressure relief hatches/manways.
6. Accessory Items
(A) Bin Discharge
Lemanco bin systems offer a variety of discharge gates including totally enclosed, manual, pneumatic, or electrically operated. Standard openings vary from 12" to 24" sq. Optional gate sizes can also be provided. Lemanco dust tight discharge adaptors offer a common discharge from 2 to 4 bin compartments. Triple, twin, and single screw feeders are designed to deliver products from Lemanco bins where direct gravity discharge is impractical or impossible; where rigid controls are required; or when the product is conducive to bridging. These units are an integral part of the Lemanco System and eliminate assembly and flow problems normally encountered when equipment has not been coordinated with the bin design.
Lemanco Live Bottom Feeders are custom designed to meet individual requirements and have frequently been used for handling meat scraps, bone meal, feather meal, cottonseed hulls, and other hard to flow products in both agricultural and industrial applications. All standard screw feeders have variable pitch flighting.
Lemanco Live Bottom Feeders are compatible with completely automated systems because of their consistent performance, durable construction, and minimum maintenance. Lemanco feeders feature emergency cutoff slides and access doors. Standard pricing includes reducer, motor mount, sheaves, belts, and guards. (Motors and electrical equipment are provided by others.)
(B) Weigh Hopper
The Lemanco Batching System includes a weigh hopper and scale, suspended beneath the bins to speed batching of various products. This flared top weigh hopper accepts gravity flow from as many as nine full-sized compartments, or a maximum of sixteen by dividing certain compartments. By utilizing screw feeders, as many as 38 full size or 42 split compartments can be discharged into a single weigh hopper. The weigh hopper has a steel cover or header box attached to the gates or feeder discharge, a canvas connector and a vent with filter to insure clean operation. A scale suspension package can be furnished match-mated to the weigh hopper providing state of the art weighing equipment.
One person operates the entire Lemanco system from a central control station. Lemanco`s Weigh Lorry System minimizes the need for moving trucks during load-out of finished product.
(C) Safety Equipment
Lemanco safety equipment, including ladders, cages, platforms, catwalks, safety gates, etc., are designed to meet O.S.H.A. requirements. Material and design options are available.
(D) Mezzanine Floors
Floors can be designed for any elevation within the main support structure or head house. Lemanco Systems offer designs to support specific load requirements. Mezzanine designs are available for support of heavy equipment. Standard walk surfaces are bar grating or safety plate.
Chief also offers decking and curb forms to accept concrete floors.
(E) Head house
The unique Lemanco bin roof design allows for varying size head houses with multilevel floors to support and protect equipment and personnel without additional roof supports. Head house column anchors are tied into vertical chamfered columns for maximum stability.
(F) Stairways, Stairwells, and Ships-Ladders
The flexible Lemanco design can incorporate stairwells in, or attached to bin structures, providing stairways from grade to the top of the head house, accessing all intermediate floors at any elevation. Ships-ladders are also available from grade to mezzanine floors within the bin support structure.
7. Bin Assembly
Unique erection platforms attach inside each compartment to be raised as work progresses. This creates a consistent work floor to assure fast and economical installation. Cranes are not required after structural steel and hoppers have been set.
Experienced contractors have been able to install Lemanco bins in under three man-hours/tier/compartment. Normal estimates are six (6) man-hours/tier/compartment. Main supporting structural steel is estimated at 12 man hours/compartment. Contact Chief Agri/Industrial for additional information.
8. Miscellaneous Facts
Lemanco modular bins can be designed for future add-on in all directions as business demands grow. Lemanco sidewall panels and roof can be added to the top of concrete bins to provide increased storage capacity. If add-on bins have not been pre-planned, M.S.S.I. can design add-on bins to appear as part of the original structure. All bin compartments can be divided into half and quarter size compartments. Bins are designed to permit insulation between galvanized bin walls and color wall panels. This option helps control condensation. -
Chief can design field welded bins when standard bolted bins do not fit a particular application.
Metals such as stainless and Cor-ten, can be used if required. Optional surface preparation and special coatings may also be provided. -
Chief. can design special hoppers to rest on existing structures, when "other" bins need replacing.
Lemanco`s bin design has been tested and approved by an independent engineering and testing service. M.S.S.I. offers a design package, which can be supplied on a computer diskette, to assist in the process design stage for layout of the bin system. -
Chief. includes in its standard pricing many items that other bin suppliers may list as optional equipment, such as hopper flashing, manway/filter vent, roof designed to support a head house, chamfered corners and galvanized exterior walls.
Lower operating and maintenance cost combined with weather-tight construction provides longer life.
9. Service
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Drawings - Chief. provides sales presentation drawings when requested. Approval drawings are submitted prior to manufacturing. Anchor bolt locations and column loading are provided after receipt of order. Bin assembly drawings and steel erection drawings are sent at time of shipment.
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Delivery - Timely delivery is achieved through Chief`s custom scheduling system. The customer is kept informed as to current status and shipping date. After final inspection, shipment is made on commercial carrier or customer`s truck.
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Equipment Selection - Chief. can assist customers by utilizing industry contacts to provide design assistance and technical help sourcing equipment not furnished by Chief
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Start Up Assistance - Chief will provide assistance to contractors not familiar with erecting Lemanco Bins. Chief can provide names of experienced contractors when erection assistance is requested.
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Feasibility Study - Chief. can provide names of engineering firms who can perform a cost study to determine the return on investment of a particular project.
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Warranty - Chief warrants that the equipment of its manufacture is free from defects in material and workmanship. Chief has always met its obligation to provide service to the contractor or end user to ensure satisfaction. (Refer to complete warranty for additional information.)
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Quality Assurance - Chief has quality assurance personnel responsible for in-process inspection of materials and fabrication. However, the commitment to Lemanco`s quality standards requires total employee involvement in the quality process. Final inspection is performed to insure conformance to specification.
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In-house Services - Chief provides sales assistance, engineering, and inspection to better control the end product and delivery commitment.
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Packaging - Chief prides itself on ensuring accuracy in the quantity and marking of component parts for satisfactory arrival at the job site and may include other equipment drop shipped to us. Photographs are taken of each shipment prior to departure. Chief provides export packaging and containerization for overseas shipments.
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References - Chief can provide names of end-users and contractors familiar with our products who will be pleased to answer any questions you may have. The many repeat buyers of Lemanco products proves customer satisfaction.
Lower operating and maintenance cost combined with weather-tight construction provides longer life.
Lemanco Bin Systems are successfully storing and flowing these materials:
Soy bean meal, cottonseed hulls, sand, limestone. Heavy minerals such as phosphates and calcium. Protective coatings are optional for storing corrosive materials such as salt, poultry and meat by-products.
A Partial Listing Of Storage Applications
- Commercial Feed
- Seed Handling/Processing
- Water Treatment Facilities
- Coffee Processing
- Wood Products Facilities
- Distilled Liquor (by-products)
- Minerals
- Rendering
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- Specialty Feeds
- Fertilizer
- Cement Batching
- Plastics
- Pharmaceuticals
- Pop-Corn/Grain
- Animal Protein
- Chemicals
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Cost per ton of storage multiplied by useful life equals exceptional value.
SUMMARY OF LEMANCO MODULAR BIN FEATURES
The following chart shows maximum tonnage and material densities for each compartment:
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Single Modular Bins
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7' x 7'
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8' x 8'
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8' x 10'
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10' x 10'
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Maximum cu. ft. Level Full
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3,543
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5,075
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6,558
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8,042
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Maximum Density
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120#
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150#
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150#
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150#
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Maximum Tonnage
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70.6
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101.5
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131.1
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160.8
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I. PROVIDES MORE VERSATILITY
- Product density up to 150#.
- Can be relocated if necessary.
- Designed for gravity or pneumatic fill.
- Bin compartments are available in a variety of sizes and configurations.
- Designed for future additions and modifications as business needs change.
- Designed to flow the most difficult products.
- Coating options.
- Designed to support machine loads and head house.
- Pre-engineered or custom designed to accommodate your specific application.
- Divided compartments in various sizes.
- Design flexibility.
- Each compartment within a bin cluster can accommodate the heaviest of any of the stored ingredients.
II. LONGER LIFE
- Heavy gauge steel and plate construction.
- Galvanized exterior side walls and supports.
- Patented Ventilation System.
- Ability to absorb shock loads.
- All bolted bin structural supports.
- Common wall design/double row bolted.
- Improved product flow enhances bin life.
- Horizontal Stiffeners on 30" & 35" centers.
- One piece Bin Hoppers with formed base angle.
- Top four tier interior sheets are galvanized.
- Less maintenance, cleaner operation and does not require painting
- Lemanco Bins are still in use after more than 40 years of service.
- Looks new after years of continuous operation.
III. INVESTMENT
- Simplified installation and startup.
- Better flow improves your product quality.
- Lower operating and maintenance cost.
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