Steel Bins
Why Choose a Steel Bin?
Unmatched Protection
Backed by the longest warranties in the industry.
Customized Solutions
Proven Performance
Engineered for strength and efficiency, our solutions are trusted for high-capacity storage and fast throughput.
Quick Installation
Steel bins offer the advantage of rapid delivery and installation, making them an appealing choice, especially when compared to concrete.
Steel Storage
Partnership
We have a solid partnership with Sioux Steel Company
Specifications
- Commercial Sizes and Specifications
- Size Chart
- Systems to Choose From
- Sidewall Strength
- Roofs
- Access Points
- Floors
- Accesories
Capacities are calculated at 28 degree angle of repose (grain 1” below eave), based on ASAE Standard: S413.1 and include 6% compaction. All bins are designed for storage of grain and/or free flowing materials not exceeding 51 lb/ft3 (55 lb/ft3 including compaction). Storage of grains heavier than 55 lbs per cubic foot (including compaction), must be approved by Our Team
- Other sizes available.
- Total height based upon standard 60″ flat cap.
- We reserve the right to change specifications without notice.
Size Chart
CAPACITIES ARE ESTIMATES AND NOT GUARANTEED
| DIAMETER | TOTAL HEIGHT (FT) | VOLUME (FT3) | CAPACITY BUSHELS PEAKED |
| 36’ (10,97 M) | FROM 47’ 3” TO 98’ 7” | FROM 40,117 TO 91,818 | FROM 34,179 TO 78,219 |
| 42’ (12,80 M) | FROM 49’ TO 100’ 4” | FROM 55,338 TO 125,720 | FROM 47,139 TO 107,081 |
| 48’ (14,63 M) | FROM 50’ 8” to 102’ | FROM 73,243 TO 165,131 | FROM 62,378 TO 140,671 |
| DIAMETER | TOTAL HT. 50K ROOFS (FT) | VOLUME (FT3) | CAPACITY BUSHELS PEAKED |
| 54’ (16,46 M) | FROM 50’ 4” TO 105’ 4” | FROM 93,866 TO 218,527 | FROM 79,967 TO 186,134 |
| 60’ (18,29 M) | FROM 53’ 2” TO 108’ 2” | FROM 117,386 TO 271,252 | FROM 99,983 TO 231,052 |
| 66’ (20,12 M) | FROM 54’ 10” TO 109’ 10” | FROM 143,801 TO 330,016 | FROM 122,504 TO 281,096 |
| 72’ (21,95 M) | FROM 56’ 1” TO 111’ 1” | FROM 173,289 TO 394,853 | FROM 147,608 TO 336,349 |
| 75’ (22,86 M) | FROM 56’ 1” TO 111’ 1” | FROM 189,181 TO 429,603 | FROM 161,148 TO 365,944 |
| 78’ (23,77 M) | FROM 57’ 3” TO 112’ 3” | FROM 205,885 TO 465,906 | FROM 175,363 TO 396,870 |
| 90’ (27,43 M) | FROM 61’ 3” TO 116’ 3” | FROM 280,752 TO 626,941 | FROM 239,143 TO 534,050 |
| 105’ (32 M) | FROM 65’ 6” TO 116’ 10” | FROM 393,441 TO 833,285 | FROM 335,150 TO 709,790 |
| DIAMETER | TOTAL HT. 35K ROOFS (FT) | VOLUME (FT3) | CAPACITY BUSHELS PEAKED |
| 132’ (40,23 M) | FROM 74 TO ’ 8” 115’ | FROM 654,063 TO 1,200,169 | FROM 557,126 TO 1,022,336 |
64 LB/Bushel Bins (18 – 132’ diameter bins)
- 2 or 3 stiffeners per side wall sheet on stiffened bins.
- Designed for free flowing grains up to 64 lb/bushel (51 lbs/ft3).
- 4” corrugation and 70,000 psi tensile strength (55,000 psi yield strength) steel.
- Filled up to 20,000 (550 MT/hour) bushels per hour and unloaded at 25,000 (700 MT/hour) bushels per hour.
70 LB/Bushel Bins (90’, 105’, & 132’ diameter bins)
- 3 stiffeners per side wall sheet.
- Designed for free flowing grains up to 70 lb/bushel (56 lbs/ft3).
- 4” corrugation and 70,000 psi tensile strength (55,000 psi yield strength) steel.
- Filled up to 20,000 (550 MT/hour) bushels per hour and unloaded at 25,000 (700 MT/hour) bushels per hour.
Wind Rings
Wind rings offer additional strength against the elements. External pressure from wind forces are overcome by utilizing wind rings to help equalize the hoop strength. Design and quantity of wind rings are determined by diameter and height of bin to adequately handle the external forces of wind.
Defined Bolt Pattern
Sioux Steel bins are designed to handle the stresses associated with 64 lb/bushel & 70 lb/bushel grain weights. Bolt patterns are optimized for each connection depending on the amount of hoop tension and the gauge of the side wall sheet being used. This results in strong yet efficient vertical and horizontal bolt seams.
Strongest Stiffener Splices
Stiffener splices ensure that the large vertical loads are transferred properly between stiffener sections. Sioux bins use both an insert and two back plates at stiffener splices. We utilize 7/16” hardware in all wall sheet seams and at all stiffener to wall sheet connections. 7/16” fasteners are 36% stronger than 3/8”.
Base Angle for Single Pass Sweeping
Heavy base angles are installed between the stiffener base plates and are secured to the bottom horizontal holes in the bottom sheet. This results in a robust connection between the bin and the foundation. The base angles have holes in them for additional anchor bolts. The additional anchor bolts are required to resist the high lateral and uplift loads created when sweeping larger diameter bins in a single pass. These angles are standard on bins 72’ and larger in both two and three stiffener per sheet configurations.
Ease of Construction
Combining 44 inch sheets and 3 roof panels per single sheet lessens the demand for bolts, nuts and washers which, in turn, lowers weight and erection costs.
Anchor System and Shims
The base plate and shim system on Sioux Steel commercial bins ensure stability and solid load path. Together they form a firm and permanent foundation with maximum strength.
Roofs
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Our roof structures are designed for up to 50,000 lbs. of peak load and utilize galvanized back-to-back “C” channels for ultimate strength. The large flat tops, varying in diameter from 5’ to 12’, provide multiple connection points to support catwalks and equipment loads. |
Access Points
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Man-Way The unique ovate construction of the man-way is the largest and most "user-friendly" in the industry. It is designed to allow access to a heavily clothed individual. Access Door Four doors designed specifically for strength and integrity dependent on the diameter and height of the structure. All feature tieless inside panels, secure latching and a large 36” x 27” opening. Walk-In Doors Large 1-tier & 1-1/2 tier door options are available. The industry's LARGEST 1-1/2 tier door. 27” x 58” tall openings. |
Floors
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Floors Full Floor and Flush Floor Designs range from a variety of in-concrete systems to full floor using 16, 18 or 20 gauge planking formulated by height and diameter. Choose from a welded free flow system of supports or 17 gauge die cast supports. Floor Designs A variety of floor systems are available from full floors above concrete with custom plenum heights, to flush in concrete patterns designed for your installation. Sioux Steel Company can also provide hopper bottom aeration systems for concrete hopper foundations or steel commercial hopper bottom tanks. Find more information about floors. |
- Grain Legs
- Grain Loop Systems
- Drag Conveyors
- Continuous Flow Dryers
- Stirring Machines
- Grain Spreaders
- Grain Monitoring
- Towers/Catwalks/ Support Structure
Tell Us About Your Project
Customers Who Rely on Us
Let experts guide you on how to start your project!
If you’re unsure about the size of the steel bin you need or if special equipment is required, contact our experts for guidance and budget-friendly recommendations.
Expert design-build firm specializing in reinforced concrete silos & industrial chimneys since 1914. Trusted nationwide for durable storage solutions.
6001 49th Street South
Muscatine, Iowa 52761
Location & Directions
Phone
(563) 263-4733
sales & services
Silos, Chimneys and Inspections
sales@hoffmanninc.com
563.263.4733 Phone
Steel Stacks, Fabrication and Industrial Services
sales@silverhawkfab.com
563.263.4733 Phone
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