Find a Dealer
Login

Menu

On-Farm Holding Bins  Find a Dealer
On-Farm Holding Bins Back to Website
Home > Products > Grain Storage > Grain Bins > On-Farm Holding Bins

The Top Choice for On-Farm Holding Bins

If your needs include wet holding bins, seed storage bins, overhead gravity-flow bins, blending bins, or a bin for tempering your grain after drying, Brock’s Holding Bins are the bins of choice for today’s grower.

Bin Diameters
9 to 21 feet (2.7 to 6.4 m)
Grain Capacity Range
259 to 7,734 bushels (6.2 to 185.3 metric tons)
Fill Height Range
11 feet-10 inches to 40 feet (3.61-12.13 m)
Allowable Roof Peak Load Capacity Range
500 to 4,000 pounds (225 to 1,800 kg)

Photos & Videos:
Features
Superior Strength & Corrosion Resistance

Grain Bin-Style Roof With High Load Ratings
A grain bin-style roof with a higher load rating is standard on larger diameter hopper bin models. An economical feed bin-style roof is standard for smaller models.

Top Quality Steel Sidewall Body Sheets
Brock uses top quality prime steel sidewall body sheets with a tensile strength up to 65 ksi (448 Mpa). Identification codes on every body sheet identify manufacturing date, part number, and steel gauge.

Sturdy “X” Bracing
Sturdy “X” bracing between legs gives additional bin strength. Bracing is simple to assemble and offers easy access to boot.

All-Galvanized Bin Legs
Bin legs are formed from all-galvanized steel for superior fit, durability, and strength.

Bin Anchor System for Strong Foundation Connection
The bin anchor system securely fastens the bin to the foundation and is designed to withstand winds up to 105 mph (169 km/h).

High-Strength, Corrosion-Resistant Bolts
Sidewalls are assembled using Brock’s high-strength Grade 8 bin seal bolts with special JS1000™ weather-resistant coating. Optional Grade 8 polypropylene-encapsulated head bolts provide enhanced corrosion resistance.

JS1000 trademark is not owned or licensed by CTB, Inc.

feature
Safe, Convenient Bin Access Features

Ladder Safety Cage
A ladder safety cage is standard for ladders on bins with an eave height of over 20 feet (6.1 meters).

ACCESS PLUS® Hopper Access Door
Brock’s ACCESS PLUS® Hopper Access Door gives easy access to the interior of the holding bin’s hopper.

feature
Two Gate Options to Accommodate Different Needs

The hopper’s discharge opening may be equipped with heavy-duty rack and pinion or roller unloading gates.

feature
Accessories
Gravity Roof Vents
Brock offers elbow-style and mushroom-style gravity roof ventilators to help provide free air movement into the bin.
Learn More
Roof Eave Vent System
Instead of cutting holes in the roof, Brock raises it up off the sidewalls with the innovative BROCK® Eave-Vent System.
Learn More
Feed Bin Ladder Security Door
This economical Ladder Security Door helps to restrict unauthorized access to the outside ladder on feed or grain storage bins and silos.
Learn More
Specifications
On-Farm Holding Bins:
All Diameters 9 Ft. Diameters 12 Ft. Diameters 15 Ft. Diameters 18 Ft. Diameters 21 Ft. Diameters Holding Bin Roof Styles On-Farm Holding Bins – All Diameters

On-Farm Holding Bins – All Diameters



Bin Model
Diameter
Feet (Meters)

Rings
Hopper
Angle		Maximum
Capacity*
Peaked
Storage
Bushels		U.S.
Tons
Corn		Metric
Tons
Corn		Overall
Height
Ft.-In.
FILL
Meters
45-009019 (2.7)1603178.47.615'-7"4.75
45-009029 (2.7)26045912.111.018'-3"5.69
45-009039 (2.7)36060115.914.420'-11"6.38
45-009049 (2.7)46074419.717.823'-7"7.19
45-009059 (2.7)56088623.421.226'-3"8
45-009069 (2.7)660102827.224.728'-11"8.81
45-009079 (2.7)760117130.928.131'-7"9.63
45-009089 (2.7)860131334.731.534'-3"10.44
45-009099 (2.7)960145538.534.936'-11"11.25
45-0090109 (2.7)1060159842.238.339'-7"12.07
45-009319 (2.7)1452586.86.211'-10"3.61
45-009329 (2.7)24540110.69.614'-6"4.42
45-009339 (2.7)34554314.313.017'-2"5.23
45-009349 (2.7)44568518.116.419'-10"6.05
45-009359 (2.7)54582821.919.822'-6"6.86
45-009369 (2.7)64597025.623.325'-2"7.67
45-009379 (2.7)745111229.426.727'-10"8.48
45-009389 (2.7)845125533.230.130'-6"9.3
45-009399 (2.7)945139736.933.533'-2"10.11
45-0093109 (2.7)1045153940.736.935'-10"10.92
45-0093119 (2.7)1145168244.440.338'-6"11.74
45-0123112 (3.7)14553214.112.814'-2"4.32
45-0123212 (3.7)24578520.718.816'-10"5.13
45-0123312 (3.7)345103827.424.919'-6"5.94
45-0123412 (3.7)445129134.131.022'-2"6.76
45-0123512 (3.7)545154540.837.024'-10"7.57
45-0123612 (3.7)645179847.543.127'-6"8.38
45-0123712 (3.7)745205154.249.230'-2"9.19
45-0123812 (3.7)845230560.955.232'-10"10.01
45-0123912 (3.7)945255867.661.335'-6"10.82
45-01231012 (3.7)1045281174.367.438'-2"11.63
45-01231112 (3.7)1145306581.073.540'-10"12.45
45-0120112 (3.7)16067417.816.219'-5"5.92
45-0120212 (3.7)26092724.522.222'-1"6.73
45-0120312 (3.7)360118031.228.324'-9"7.54
45-0120412 (3.7)460143337.934.427'-5"8.36
45-0120512 (3.7)560168744.640.430'-1"9.17
45-0120612 (3.7)660194051.346.532'-9"9.98
45-0120712 (3.7)760219358.052.635'-5"10.8
45-0120812 (3.7)860244764.658.638'-1"11.61
45-0120912 (3.7)960270071.364.740'-9"12.42
45-01201012 (3.7)1060295378.070.843'-5"13.23
45-01201112 (3.7)1160320784.776.946'-1"14.05
45-0153215 (4.6)245134135.432.519'-2"5.84
45-0153315 (4.6)345173745.941.621'-10"6.65
45-0153415 (4.6)445213356.451.124'-6"7.47
45-0153515 (4.6)545252966.860.627'-2"8.28
45-0153615 (4.6)645292577.370.129'-10"9.09
45-0153715 (4.6)745332287.879.632'-6"9.91
45-0153815 (4.6)845371898.289.135'-2"10.72
45-0153915 (4.6)9454114108.798.637'-10"11.53
45-0150215 (4.6)260160942.538.625'-10"7.87
45-0150315 (4.6)360200553.048.128'-6"8.69
45-0150415 (4.6)460240163.457.531'-2"9.5
45-0150515 (4.6)560279773.967.033'-10"10.31
45-0150615 (4.6)660319384.476.536'-6"11.13
45-0150715 (4.6)760358994.886.039'-2"11.94
45-0150815 (4.6)8603985105.395.541'-10"12.75
45-0150915 (4.6)9604382115.7105.044'-6"13.56
45-01501015 (4.6)10604778126.2114.547'-2"14.37
45-0183218 (5.5)245209255.350.221'-7"6.58
45-0183318 (5.5)345266370.463.824'-3"7.39
45-0183418 (5.5)445323385.477.526'-11"8.2
45-0183518 (5.5)5453804100.591.229'-7"9.02
45-0183618 (5.5)6454375115.6104.832'-3"9.83
45-0183718 (5.5)7454945130.6118.534'-11"10.64
45-0183818 (5.5)8455516145.7132.237'-7"11.46
45-0183918 (5.5)9456086160.8145.940'-3"12.27
45-0213221 (6.4)245307281.273.624'-0"7.32
45-0213321 (6.4)3453849101.792.626'-8"8.13
45-0213421 (6.4)4454626122.2110.929'-4"8.94
45-0213521 (6.4)5455403142.7129.532'-0"9.75
45-0213621 (6.4)6456180163.3148.134'-8"10.57
45-0213721 (6.4)7456957183.8166.737'-4"11.38
45-0213821 (6.4)8457734204.3185.340'-0"12.13

Notes

*Maximum Capacity for a bin allows for grain to be at a 28° angle of repose, starting one inch (25 mm) below the eave. The grain capacities listed above are based on ASAE Standard S413.1, with a compaction factor of 6%. Metric tons are based on ASAE Standard D241.4 of 721 kg per cubic meter for corn and 772 kg per cubic meter for wheat.

Roof peak capacity ratings are based on ground snow loads of 40 pounds per square foot (195 kg per square meter). Bins are designed to meet ASCE 7-10 code requirements for 105 mph (169 km/h) wind zones and UBC 97 seismic zone 1. In the pursuit of LEADERSHIP THROUGH INNOVATION®, we reserve the right to change specifications without prior notice.

NOTE: Hopper-bottom bins and silos are designed for the storage of free-flowing materials only. Soybean meal, meat scraps, and many other materials are NOT considered free-flowing and must use approved unloading equipment. Call Brock Grain Systems for approved unloading equipment. Any questions regarding the flowability of different materials should be directed to the material manufacturer. Because you will customize your grain storage system to your unique needs, not all potentially dangerous or harmful situations can be identified by Brock Grain Systems at the time the bin components and accessories are manufactured. Therefore, it is essential that you think safety first and pay close attention to all possible hazards within your storage systems.

Need More Capacity? Ask about Brock’s EVEREST® Hopper-Bottom Bins in diameters from 15 to 42 feet (4.6 to 12.8 M).

On-Farm Holding Bins – 9 Ft. Diameters

Bin ModelDiameter
Feet (Meters)		RingsHopper
Angle		Maximum
Capacity*
Peaked
Storage
Bushels		U.S.
Tons
Corn		Metric
Tons
Corn		Overall
Height
Ft.-In.		FILL
Meters
45-009019 (2.7)1603178.47.615'-7"4.75
45-009029 (2.7)26045912.111.018'-3"5.69
45-009039 (2.7)36060115.914.420'-11"6.38
45-009049 (2.7)46074419.717.823'-7"7.19
45-009059 (2.7)56088623.421.226'-3"8
45-009069 (2.7)660102827.224.728'-11"8.81
45-009079 (2.7)760117130.928.131'-7"9.63
45-009089 (2.7)860131334.731.534'-3"10.44
45-009099 (2.7)960145538.534.936'-11"11.25
45-0090109 (2.7)1060159842.238.339'-7"12.07
45-009319 (2.7)1452586.86.211'-10"3.61
45-009329 (2.7)24540110.69.614'-6"4.42
45-009339 (2.7)34554314.313.017'-2"5.23
45-009349 (2.7)44568518.116.419'-10"6.05
45-009359 (2.7)54582821.919.822'-6"6.86
45-009369 (2.7)64597025.623.325'-2"7.67
45-009379 (2.7)745111229.426.727'-10"8.48
45-009389 (2.7)845125533.230.130'-6"9.3
45-009399 (2.7)945139736.933.533'-2"10.11
45-0093109 (2.7)1045153940.736.935'-10"10.92
45-0093119 (2.7)1145168244.440.338'-6"11.74

Notes

*Maximum Capacity for a bin allows for grain to be at a 28° angle of repose, starting one inch (25 mm) below the eave. The grain capacities listed above are based on ASAE Standard S413.1, with a compaction factor of 6%. Metric tons are based on ASAE Standard D241.4 of 721 kg per cubic meter for corn and 772 kg per cubic meter for wheat.

Roof peak capacity ratings are based on ground snow loads of 40 pounds per square foot (195 kg per square meter). Bins are designed to meet ASCE 7-10 code requirements for 105 mph (169 km/h) wind zones and UBC 97 seismic zone 1. In the pursuit of LEADERSHIP THROUGH INNOVATION®, we reserve the right to change specifications without prior notice.

NOTE: Hopper-bottom bins and silos are designed for the storage of free-flowing materials only. Soybean meal, meat scraps, and many other materials are NOT considered free-flowing and must use approved unloading equipment. Call Brock Grain Systems for approved unloading equipment. Any questions regarding the flowability of different materials should be directed to the material manufacturer. Because you will customize your grain storage system to your unique needs, not all potentially dangerous or harmful situations can be identified by Brock Grain Systems at the time the bin components and accessories are manufactured. Therefore, it is essential that you think safety first and pay close attention to all possible hazards within your storage systems.

Need More Capacity? Ask about Brock’s EVEREST® Hopper-Bottom Bins in diameters from 15 to 42 feet (4.6 to 12.8 M).

On-Farm Holding Bins – 12 Ft. Diameters


Bin Model		Diameter
Feet (Meters)
Rings		Hopper
Angle		Maximum
Capacity*
Peaked
Storage
Bushels		U.S.
Tons
Corn		Metric
Tons
Corn		Overall
Height
Ft.-In.		FILL
Meters
45-0123112 (3.7)14553214.112.814'-2"4.32
45-0123212 (3.7)24578520.718.816'-10"5.13
45-0123312 (3.7)345103827.424.919'-6"5.94
45-0123412 (3.7)445129134.131.022'-2"6.76
45-0123512 (3.7)545154540.837.024'-10"7.57
45-0123612 (3.7)645179847.543.127'-6"8.38
45-0123712 (3.7)745205154.249.230'-2"9.19
45-0123812 (3.7)845230560.955.232'-10"10.01
45-0123912 (3.7)945255867.661.335'-6"10.82
45-01231012 (3.7)1045281174.367.438'-2"11.63
45-01231112 (3.7)1145306581.073.540'-10"12.45
45-0120112 (3.7)16067417.816.219'-5"5.92
45-0120212 (3.7)26092724.522.222'-1"6.73
45-0120312 (3.7)360118031.228.324'-9"7.54
45-0120412 (3.7)460143337.934.427'-5"8.36
45-0120512 (3.7)560168744.640.430'-1"9.17
45-0120612 (3.7)660194051.346.532'-9"9.98
45-0120712 (3.7)760219358.052.635'-5"10.8
45-0120812 (3.7)860244764.658.638'-1"11.61
45-0120912 (3.7)960270071.364.740'-9"12.42
45-01201012 (3.7)1060295378.070.843'-5"13.23
45-01201112 (3.7)1160320784.776.946'-1"14.05

Notes

*Maximum Capacity for a bin allows for grain to be at a 28° angle of repose, starting one inch (25 mm) below the eave. The grain capacities listed above are based on ASAE Standard S413.1, with a compaction factor of 6%. Metric tons are based on ASAE Standard D241.4 of 721 kg per cubic meter for corn and 772 kg per cubic meter for wheat.

Roof peak capacity ratings are based on ground snow loads of 40 pounds per square foot (195 kg per square meter). Bins are designed to meet ASCE 7-10 code requirements for 105 mph (169 km/h) wind zones and UBC 97 seismic zone 1. In the pursuit of LEADERSHIP THROUGH INNOVATION®, we reserve the right to change specifications without prior notice.

NOTE: Hopper-bottom bins and silos are designed for the storage of free-flowing materials only. Soybean meal, meat scraps, and many other materials are NOT considered free-flowing and must use approved unloading equipment. Call Brock Grain Systems for approved unloading equipment. Any questions regarding the flowability of different materials should be directed to the material manufacturer. Because you will customize your grain storage system to your unique needs, not all potentially dangerous or harmful situations can be identified by Brock Grain Systems at the time the bin components and accessories are manufactured. Therefore, it is essential that you think safety first and pay close attention to all possible hazards within your storage systems.

Need More Capacity? Ask about Brock’s EVEREST® Hopper-Bottom Bins in diameters from 15 to 42 feet (4.6 to 12.8 M).

On-Farm Holding Bins – 15 Ft. Diameters


Bin Model		Diameter
Feet (Meters)
Rings		Hopper
Angle		Maximum
Capacity*
Peaked
Storage
Bushels		U.S.
Tons
Corn		Metric
Tons
Corn		Overall
Height
Ft.-In.		FILL
Meters
45-0153215 (4.6)245134135.432.519'-2"5.84
45-0153315 (4.6)345173745.941.621'-10"6.65
45-0153415 (4.6)445213356.451.124'-6"7.47
45-0153515 (4.6)545252966.860.627'-2"8.28
45-0153615 (4.6)645292577.370.129'-10"9.09
45-0153715 (4.6)745332287.879.632'-6"9.91
45-0153815 (4.6)845371898.289.135'-2"10.72
45-0153915 (4.6)9454114108.798.637'-10"11.53
45-0150215 (4.6)260160942.538.625'-10"7.87
45-0150315 (4.6)360200553.048.128'-6"8.69
45-0150415 (4.6)460240163.457.531'-2"9.5
45-0150515 (4.6)560279773.967.033'-10"10.31
45-0150615 (4.6)660319384.476.536'-6"11.13
45-0150715 (4.6)760358994.886.039'-2"11.94
45-0150815 (4.6)8603985105.395.541'-10"12.75
45-0150915 (4.6)9604382115.7105.044'-6"13.56
45-01501015 (4.6)10604778126.2114.547'-2"14.37

Notes

*Maximum Capacity for a bin allows for grain to be at a 28° angle of repose, starting one inch (25 mm) below the eave. The grain capacities listed above are based on ASAE Standard S413.1, with a compaction factor of 6%. Metric tons are based on ASAE Standard D241.4 of 721 kg per cubic meter for corn and 772 kg per cubic meter for wheat.

Roof peak capacity ratings are based on ground snow loads of 40 pounds per square foot (195 kg per square meter). Bins are designed to meet ASCE 7-10 code requirements for 105 mph (169 km/h) wind zones and UBC 97 seismic zone 1. In the pursuit of LEADERSHIP THROUGH INNOVATION®, we reserve the right to change specifications without prior notice.

NOTE: Hopper-bottom bins and silos are designed for the storage of free-flowing materials only. Soybean meal, meat scraps, and many other materials are NOT considered free-flowing and must use approved unloading equipment. Call Brock Grain Systems for approved unloading equipment. Any questions regarding the flowability of different materials should be directed to the material manufacturer. Because you will customize your grain storage system to your unique needs, not all potentially dangerous or harmful situations can be identified by Brock Grain Systems at the time the bin components and accessories are manufactured. Therefore, it is essential that you think safety first and pay close attention to all possible hazards within your storage systems.

Need More Capacity? Ask about Brock’s EVEREST® Hopper-Bottom Bins in diameters from 15 to 42 feet (4.6 to 12.8 M).

On-Farm Holding Bins – 18 Ft. Diameters


Bin Model		Diameter
Feet (Meters)
Rings		Hopper
Angle		Maximum
Capacity*
Peaked
Storage
Bushels		U.S.
Tons
Corn		Metric
Tons
Corn		Overall
Height
Ft.-In.		FILL
Meters
45-0183218 (5.5)245209255.350.221'-7"6.58
45-0183318 (5.5)345266370.463.824'-3"7.39
45-0183418 (5.5)445323385.477.526'-11"8.2
45-0183518 (5.5)5453804100.591.229'-7"9.02
45-0183618 (5.5)6454375115.6104.832'-3"9.83
45-0183718 (5.5)7454945130.6118.534'-11"10.64
45-0183818 (5.5)8455516145.7132.237'-7"11.46
45-0183918 (5.5)9456086160.8145.940'-3"12.27

Notes

*Maximum Capacity for a bin allows for grain to be at a 28° angle of repose, starting one inch (25 mm) below the eave. The grain capacities listed above are based on ASAE Standard S413.1, with a compaction factor of 6%. Metric tons are based on ASAE Standard D241.4 of 721 kg per cubic meter for corn and 772 kg per cubic meter for wheat.

Roof peak capacity ratings are based on ground snow loads of 40 pounds per square foot (195 kg per square meter). Bins are designed to meet ASCE 7-10 code requirements for 105 mph (169 km/h) wind zones and UBC 97 seismic zone 1. In the pursuit of LEADERSHIP THROUGH INNOVATION®, we reserve the right to change specifications without prior notice.

NOTE: Hopper-bottom bins and silos are designed for the storage of free-flowing materials only. Soybean meal, meat scraps, and many other materials are NOT considered free-flowing and must use approved unloading equipment. Call Brock Grain Systems for approved unloading equipment. Any questions regarding the flowability of different materials should be directed to the material manufacturer. Because you will customize your grain storage system to your unique needs, not all potentially dangerous or harmful situations can be identified by Brock Grain Systems at the time the bin components and accessories are manufactured. Therefore, it is essential that you think safety first and pay close attention to all possible hazards within your storage systems.

Need More Capacity? Ask about Brock’s EVEREST® Hopper-Bottom Bins in diameters from 15 to 42 feet (4.6 to 12.8 M).

On-Farm Holding Bins – 21 Ft. Diameters


Bin Model		Diameter
Feet (Meters)
Rings		Hopper
Angle		Maximum
Capacity*
Peaked
Storage
Bushels		U.S.
Tons
Corn		Metric
Tons
Corn		Overall
Height
Ft.-In.		FILL
Meters
45-0213221 (6.4)245307281.273.624'-0"7.32
45-0213321 (6.4)3453849101.792.626'-8"8.13
45-0213421 (6.4)4454626122.2110.929'-4"8.94
45-0213521 (6.4)5455403142.7129.532'-0"9.75
45-0213621 (6.4)6456180163.3148.134'-8"10.57
45-0213721 (6.4)7456957183.8166.737'-4"11.38
45-0213821 (6.4)8457734204.3185.340'-0"12.13

Notes

*Maximum Capacity for a bin allows for grain to be at a 28° angle of repose, starting one inch (25 mm) below the eave. The grain capacities listed above are based on ASAE Standard S413.1, with a compaction factor of 6%. Metric tons are based on ASAE Standard D241.4 of 721 kg per cubic meter for corn and 772 kg per cubic meter for wheat.

Roof peak capacity ratings are based on ground snow loads of 40 pounds per square foot (195 kg per square meter). Bins are designed to meet ASCE 7-10 code requirements for 105 mph (169 km/h) wind zones and UBC 97 seismic zone 1. In the pursuit of LEADERSHIP THROUGH INNOVATION®, we reserve the right to change specifications without prior notice.

NOTE: Hopper-bottom bins and silos are designed for the storage of free-flowing materials only. Soybean meal, meat scraps, and many other materials are NOT considered free-flowing and must use approved unloading equipment. Call Brock Grain Systems for approved unloading equipment. Any questions regarding the flowability of different materials should be directed to the material manufacturer. Because you will customize your grain storage system to your unique needs, not all potentially dangerous or harmful situations can be identified by Brock Grain Systems at the time the bin components and accessories are manufactured. Therefore, it is essential that you think safety first and pay close attention to all possible hazards within your storage systems.

Need More Capacity? Ask about Brock’s EVEREST® Hopper-Bottom Bins in diameters from 15 to 42 feet (4.6 to 12.8 M).

On-Farm Holding Bin Roof Styles

On-Farm Holding
Bin Roof Style		Roof Peak
Capacity Rating		Standard Roof
Style for Bin
Diameters		Optional Roof
Style for Bin
Diameters
Feed Bin
Roof		500 to 1,000 lbs.
(225 to 450 kg)		9 to 15 feet
(2.7 to 4.6 m)		-
3-Panel
Ribbed Roof		1,000 lbs.
(450 kg)		18 to 21 feet
(5.5 to 6.4 m)		12 to 15 feet
(2.7 to 4.6 m)
4-Panel
Ribbed Roof		4,000 lbs.
(1,800 kg)		-15 to 21 feet
(4.6 to 6.4 m)

Notes

Roof peak capacity ratings are based on ground snow loads of 40 pounds per square foot (195 kg per square meter).
Literature

To improve your experience on this site, for social sharing and to provide you with personalized ad content, we may use cookies and similar technologies. We may also collect anonymous visitor traffic information, primarily to help us refine our site. You can set your cookie preferences within the settings of most web browsers. See our privacy policy.