Skirted Storage Silos - Brock Industrial
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Efficiently Utilize Your Plant’s Outside Storage Space

Large or small, few industrial operations can afford to use expensive plant floor space for storing large quantities of raw materials that could be economically stored outside in large silos.

Using a BROCK® Bulk Storage System lets you use your building for productive manufacturing rather than storage. It also allows you to buy in larger, money-saving quantities.

Brock’s broad line of bolted-steel, skirted, hopper-bottom silos offers you the capacities and features you need today – in a silo that will allow you to grow into tomorrow.

Storage Capacities
440 through 6,150 cubic feet (12 through 174 cubic meters)
Silo Diameters
9 to 18 feet (2.7 to 5.5 meters)


Features
Storage Capacities to Meet the Needs of Many Operations

Capacities range from 440 through 6,150 cubic feet (12 through 174 cubic meters). Silo diameters range from 9 to 18 feet (2.7 to 5.5 meters).

High-Strength Roof

The sturdy, low-profile (10-degree slope) roof has a 22-inch (56 cm) fill opening and 12-inch (305 mm) discharge opening with 16×16-inch (41×41 cm) universal flange.

Built-In Features for Added Safety and Restricted Access

The skirted hopper area and walk-through door can be locked to limit access to the silo’s contents and conveying equipment.

Additionally, a ladder security door attaches securely to the silo’s exterior ladder to discourage its use.

feature
Your Choice of 45° or 60° Center Draw Unloading Hoppers
Wide Variety of Options

A variety of ladder and door options are available, such as a unique silo ladder with safety cage, lockable door and crosswalk designed to meet OSHA specifications.

Other options include:

  • Rooftop perimeter guard rail and toe board
  • Manholes
  • Pressure relief valves
  • View windows
Specifications
Skirted Storage Silo Capacities:

Skirted Storage Silos


Diameter
Feet (Meters)
Model
Number
Approx.
Capacity
Maximum
Cu. Ft.
Approx.
Capacity
Maximum
M3
Usable
Capacity
Cu. Ft.*
Usable
Capacity
M3*
Height
To Lid
Feet
Height
To Lid
Meters
45° Hopper Angle 3-Ring Skirt
9 ft. (2.7 m)S45-00932439123851115.14.6
9 ft. (2.7 m)S45-00933608175541617.85.4
9 ft. (2.7 m)S45-00934777227232020.46.2
9 ft. (2.7 m)S45-00935946278922523.17.0
9 ft. (2.7 m)S45-009361,115321,0613025.87.9
60° Hopper Angle 4-Ring Skirt
9 ft. (2.7 m)S45-00902514154601317.85.4
9 ft. (2.7 m)S45-00903684196301820.46.2
9 ft. (2.7 m)S45-00904854248002323.17.0
9 ft. (2.7 m)S45-009051,019299652725.87.9
9 ft. (2.7 m)S45-009061,189341,1353228.48.7
45° Hopper Angle 3-Ring Skirt
12 ft. (3.7 m)S45-01232803236621914.84.5
12 ft. (3.7 m)S45-012331,102319612717.25.2
12 ft. (3.7 m)S45-012341,400401,2593620.16.1
12 ft. (3.7 m)S45-012351,698481,5574422.86.9
12 ft. (3.7 m)S45-012361,997571,8565325.57.8
12 ft. (3.7 m)S45-012372,295652,1546128.18.6
60° Hopper Angle 5-Ring Skirt
12 ft. (3.7 m)S45-01202966278252320.16.1
12 ft. (3.7 m)S45-012031,265361,1243222.86.9
12 ft. (3.7 m)S45-012041,563441,4224025.57.8
12 ft. (3.7 m)S45-012051,861531,7204928.18.6
12 ft. (3.7 m)S45-012062,160612,0195730.69.3
45° Hopper Angle 4-Ring Skirt
15 ft. (4.6 m)S45-015321,386391,0963117.85.4
15 ft. (4.6 m)S45-015331,854521,5644420.46.2
15 ft. (4.6 m)S45-015342,323662,0335823.17.0
15 ft. (4.6 m)S45-015352,792792,5027125.87.9
15 ft. (4.6 m)S45-015363,261922,9718428.48.7
15 ft. (4.6 m)S45-015373,7301063,4409731.19.5
15 ft. (4.6 m)S45-015384,1991193,90911133.510.3
60° Hopper Angle 6-Ring Skirt
15 ft. (4.6 m)S45-015021,734491,4444123.17.0
15 ft. (4.6 m)S45-015032,200621,9105425.87.9
15 ft. (4.6 m)S45-015042,666752,3766728.48.7
15 ft. (4.6 m)S45-015053,132892,8428031.19.5
15 ft. (4.6 m)S45-015063,5991023,3099433.810.3
15 ft. (4.6 m)S45-015074,0651153,77510736.411.1
45° Hopper Angle 4-Ring Skirt
18 ft. (5.5 m)S45-018322,120601,6004518.05.5
18 ft. (5.5 m)S45-018332,791792,2716420.66.3
18 ft. (5.5 m)S45-018343,463982,9438323.37.1
18 ft. (5.5 m)S45-018354,1341173,61410226.07.9
18 ft. (5.5 m)S45-018364,8051364,28512128.68.7
18 ft. (5.5 m)S45-018375,4761554,95614031.39.5
18 ft. (5.5 m)S45-018386,1481745,62815934.010.4

Notes

*Approximate Usable Storage Capacity with 30° Angle of Repose

9 Ft. (2.7 M) Diameter Skirted Storage Silos



Diameter
Feet (Meters)

Model
Number
Approx.
Capacity
Maximum
Cu. Ft.
Approx.
Capacity
Maximum
M3
Usable
Capacity
Cu. Ft.*
Usable
Capacity
M3*
Height
To Lid
Feet
Height
To Lid
Meters
45° Hopper Angle 3-Ring Skirt
9 ft. (2.7 m)S45-00932439123851115.14.6
9 ft. (2.7 m)S45-00933608175541617.85.4
9 ft. (2.7 m)S45-00934777227232020.46.2
9 ft. (2.7 m)S45-00935946278922523.17.0
9 ft. (2.7 m)S45-009361,115321,0613025.87.9
60° Hopper Angle 4-Ring Skirt
9 ft. (2.7 m)S45-00902514154601317.85.4
9 ft. (2.7 m)S45-00903684196301820.46.2
9 ft. (2.7 m)S45-00904854248002323.17.0
9 ft. (2.7 m)S45-009051,019299652725.87.9
9 ft. (2.7 m)S45-009061,189341,1353228.48.7

Notes

*Approximate Usable Storage Capacity with 30° Angle of Repose

12 Ft. (3.7 M) Diameter Skirted Storage Silos

Diameter
Feet (Meters)
Model
Number
Approx.
Capacity
Maximum
Cu. Ft.
Approx.
Capacity
Maximum
M3
Usable
Capacity
Cu. Ft.*
Usable
Capacity
M3*
Height
To Lid
Feet
Height
To Lid
Meters
45° Hopper Angle 3-Ring Skirt
12 ft. (3.7 m)S45-01232803236621914.84.5
12 ft. (3.7 m)S45-012331,102319612717.25.2
12 ft. (3.7 m)S45-012341,400401,2593620.16.1
12 ft. (3.7 m)S45-012351,698481,5574422.86.9
12 ft. (3.7 m)S45-012361,997571,8565325.57.8
12 ft. (3.7 m)S45-012372,295652,1546128.18.6
60° Hopper Angle 5-Ring Skirt
12 ft. (3.7 m)S45-01202966278252320.16.1
12 ft. (3.7 m)S45-012031,265361,1243222.86.9
12 ft. (3.7 m)S45-012041,563441,4224025.57.8
12 ft. (3.7 m)S45-012051,861531,7204928.18.6
12 ft. (3.7 m)S45-012062,160612,0195730.69.3

Notes

*Approximate Usable Storage Capacity with 30° Angle of Repose

15 Ft. (4.6 M) Diameter Skirted Storage Silos

Diameter
Feet (Meters)
Model
Number
Approx.
Capacity
Maximum
Cu. Ft.
Approx.
Capacity
Maximum
M3
Usable
Capacity
Cu. Ft.*
Usable
Capacity
M3*
Height
To Lid
Feet
Height
To Lid
Meters
45° Hopper Angle 4-Ring Skirt
15 ft. (4.6 m)C45-015321,386391,0963116.75.1
15 ft. (4.6 m)C45-015331,854521,5644419.35.9
15 ft. (4.6 m)C45-015342,323662,0335822.06.7
15 ft. (4.6 m)C45-015352,792792,5027124.77.5
15 ft. (4.6 m)C45-015363,261922,9718427.38.3
15 ft. (4.6 m)C45-015373,7301063,4409730.09.1
15 ft. (4.6 m)C45-015384,1991193,90911132.710.0
15 ft. (4.6 m)C45-015394,6681324,37812435.410.8
60° Hopper Angle 6-Ring Skirt
15 ft. (4.6 m)C45-015021,734491,4444121.66.6
15 ft. (4.6 m)C45-015032,200621,9105424.37.4
15 ft. (4.6 m)C45-015042,666752,3766726.98.2
15 ft. (4.6 m)C45-015053,132892,8428029.69.0
15 ft. (4.6 m)C45-015063,5991023,3099432.39.8
15 ft. (4.6 m)C45-015074,0651153,77510734.910.6
15 ft. (4.6 m)C45-015084,5311284,24112037.611.5

Notes

*Approximate Usable Storage Capacity with 30° Angle of Repose

18 Ft. (5.5 M) Diameter Skirted Storage Silos – 45° Hopper Angle

Diameter
Feet (Meters)
Model
Number
Approx.
Capacity
Maximum
Cu. Ft.
Approx.
Capacity
Maximum
M3
Usable
Capacity
Cu. Ft.*
Usable
Capacity
M3*
Height
To Lid
Feet
Height
To Lid
Meters
45° Hopper Angle 4-Ring Skirt
18 ft. (5.5 m)S45-018322,120601,6004518.05.5
18 ft. (5.5 m)S45-018332,791792,2716420.66.3
18 ft. (5.5 m)S45-018343,463982,9438323.37.1
18 ft. (5.5 m)S45-018354,1341173,61410226.07.9
18 ft. (5.5 m)S45-018364,8051364,28512128.68.7
18 ft. (5.5 m)S45-018375,4761554,95614031.39.5
18 ft. (5.5 m)S45-018386,1481745,62815934.010.4

Notes

*Approximate Usable Storage Capacity with 30° Angle of Repose
Literature

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