GSi 40 Series Instructions for use

®
105 Ft. Diameter Bin – Alpha
Models:
40-SERIES 2.66 IN. CORRUGATION BINS
50000 LB. PEAK LOAD SH ROOF WITH
STAGGERED PATTERN
Construction Manual
PNEG-4105A-S21-SH
Version 2.0
Date: 10-30-20
PNEG-4105A-S21-SH

All information, illustrations, photos, and specifications in this manual are based on the latest
information available at the time of publication. The right is reserved to make changes at any
time without notice.
2PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

Contents
Chapter 1 Safety Precautions ....................................................................................................................7
Safety Guidelines for Bins............................................................................................................8
Cautionary Symbol Definitions......................................................................................................9
Safety Cautions.........................................................................................................................10
Safety Decals ...........................................................................................................................15
Safety Sign-off Sheet.................................................................................................................17
Chapter 2 General Overview....................................................................................................................19
General Information...................................................................................................................19
Anchor Bolt Charts ....................................................................................................................19
Tools Required for Construction..................................................................................................21
Guidelines for Proper Storage of Grain Bin Materials Prior to Construction.....................................21
Overview for a Typical Bin Installation .........................................................................................22
Guidelines for Construction Procedures and Lifting Jack Usage....................................................23
Guidelines for Placement of the Decal Sidewall Sheet..................................................................24
Sample Gauge Sheet ................................................................................................................24
Chapter 3 Hardware Requirements..........................................................................................................27
Bolt and Nut Pairings.................................................................................................................27
Hardware for 3-Post Sidewall Sheets on 105 ft. Diameter Bins (All Ring Heights) ...........................28
Bolt Torque Specifications..........................................................................................................29
Identifying Bolt Grades ..............................................................................................................29
Color Chart for Bin Hardware Buckets.........................................................................................30
Bolt Identification.......................................................................................................................31
Bolt S-10260.............................................................................................................................31
Bolt S-7483...............................................................................................................................31
Bolt S-7485...............................................................................................................................32
Bolt S-7487...............................................................................................................................32
Bolt S-7486...............................................................................................................................33
Bolt S-7488...............................................................................................................................33
Bolt S-10252.............................................................................................................................34
Bolt S-10165.............................................................................................................................34
Bolt S-10262.............................................................................................................................35
Bolt S-10328.............................................................................................................................35
Bolt S-10134.............................................................................................................................35
Bolt S-10261.............................................................................................................................36
Bolt S-10803.............................................................................................................................36
Bolt S-10804.............................................................................................................................36
Bolt S-10805.............................................................................................................................37
Nut S-10274 .............................................................................................................................37
Chapter 4 Assembling the Sidewall Sheets .............................................................................................39
Color Codes for Sidewall Gauge Identification .............................................................................39
Orientation Detail for Sidewall Sheets (Top Ring Only) .................................................................40
Orientation Detail for Standard Sidewall Sheets...........................................................................40
Orientation Detail for Staggered Sidewall Sheets .........................................................................41
References for Sidewall Sheets and Caulkings ............................................................................42
Caulking Details for Bin Rings ....................................................................................................42
Caulking Instructions for Standard (Non-Laminated) Sheets .........................................................43
Caulking Instructions for Standard Laminated Sidewall Sheets .....................................................45
Outer Sheet Caulking Instructions for Laced Lamination...............................................................48
Lacing Overview of Double Laminated Sidewall Sheets................................................................49
Caulking and Assembling the Double Laminated Sheets ..............................................................50
Chapter 5 Base Angle Installation ...........................................................................................................53
Installing the Base Angle............................................................................................................53
Anchor Bolt Detail .....................................................................................................................55
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 3

Installing the Base Angle Shims .................................................................................................56
Anchor Bolt Washer Installation..................................................................................................57
Chapter 6 Stiffeners.................................................................................................................................59
Stiffener Part Number Description ..............................................................................................61
Color Codes for Stiffener Gauge Identification .............................................................................61
Outside Stiffened Laminated Stiffener to Sidewall (10 Gauge Laminated and Thicker Only) ............62
Standard Stiffeners....................................................................................................................63
Top Stiffeners............................................................................................................................64
Stiffeners Splice ........................................................................................................................65
Base Stiffeners .........................................................................................................................66
Base Boots ...............................................................................................................................67
Close-Punch Connection for a One-Ring Top Stiffener (15 – 16 Ga) and a Two-Ring Stiffener
(15 – 16 Ga) .................................................................................................................68
Close-Punch Connection for a One-Ring Top Stiffener (10 – 14 Ga) and a Two-Ring Stiffener (8
– 14 Ga) .......................................................................................................................68
Close-Punch Connection for a One-Ring Top Stiffener (10 – 14 Ga) and a Two-Ring Stiffener
(15 – 16 Ga) .................................................................................................................69
Two-Ring Top Stiffener (15 – 16 Ga) to a Two-Ring Stiffener (15 – 16 Ga) Connection....................69
Two-Ring Top Stiffener (8 – 14 Ga) to a Two-Ring Stiffener (15 – 16 Ga) Connection......................70
Two-Ring Top Stiffener (8 – 14 Ga) to a Two-Ring Stiffener (8 – 14 Ga) Connection .......................70
Close-Punch Connection for a Two-Ring Top Stiffener (16 Ga) to a Two-Ring Stiffener (16
Ga) ..............................................................................................................................71
Close-Punch Connection for a Two-Ring Top Stiffener (16 Ga) to a Two-Ring Stiffener (8 – 14
Ga) ..............................................................................................................................71
Two-Ring Stiffener (15 – 16 Ga) to a Two-Ring Stiffener (15 – 16 Ga) Connection ..........................72
Close-Punch Connection for a Two-Ring Stiffener (16 Ga) to a Two-Ring Stiffener (16 Ga) .............72
Two-Ring Stiffener (8 – 14 Ga) to a Two-Ring Stiffener (8 – 14 Ga) Connection..............................73
Close-Punch Connection for a Two-Ring Stiffener (8 – 14 Ga) to a Two-Ring Stiffener (8 – 14
Ga) ..............................................................................................................................73
Close-Punch Connection for a Two-Ring Stiffener (2 – 6 Ga) to a Two-Ring Stiffener (2 – 6
Ga) ..............................................................................................................................74
Two-Ring Stiffener (8 – 14 Ga) to a Close-Punch Base Stiffener (8 Ga) Connection........................74
Two-Ring Stiffener (8 – 14 Ga) to a Close-Punch Base Stiffener (8 Ga) Connection........................75
Two-Ring Stiffener (8 – 14 Ga) to a Close-Punch Base Stiffener (2 – 6 Ga) Connection ..................75
Two-Ring Stiffener (8 – 14 Ga) to a Close-Punch Base Stiffener (2 – 6 Ga) Connection ..................76
Close-Punch Connection for a Two-Ring Stiffener (8 – 14 Ga) to a Base Stiffener (8 Ga) ................76
Close-Punch Connection for a Two-Ring Stiffener (8 – 14 Ga) to a Base Stiffener (8 Ga) ................77
Close-Punch Connection for a Two-Ring Stiffener (2 – 6 Ga) to a Base Stiffener (2 – 6 Ga).............77
Close-Punch Connection for a Two-Ring Stiffener (2 – 6 Ga) to a Base Stiffener (2 – 6 Ga).............78
Two-Ring Stiffener (8 – 14 Ga) to a Base Stiffener (10 – 14 Ga) Connection ..................................78
Two-Ring Stiffener (8 – 14 Ga) to a Base Stiffener (10 – 14 Ga) Connection ..................................79
Two-Ring Stiffener (15 – 16 Ga) to a Base Stiffener (10 – 14 Ga) Connection ................................79
Close-Punch Connection for a Two-Ring Stiffener (15 – 16 Ga) to a Base Stiffener (10 – 14
Ga) ..............................................................................................................................80
Close-Punch Two-Ring Stiffener (2 – 6 Ga) to a Laminated Stiffener (2 Ga) with an Insert (10 –
12 Ga)..........................................................................................................................80
Close-Punch Two-Ring Stiffener (2 – 6 Ga) to a Laminated Stiffener (2 Ga) with an Insert (10 –
12 Ga)..........................................................................................................................81
Close-Punch Laminated Stiffeners (2 Ga) with Inserts (10 – 12 Ga)...............................................81
Close-Punch Laminated Stiffener (2 Ga) with an Insert (10 – 12 Ga) to a Laminated Base Stiff-
ener (2 Ga) with a Base Insert (10 – 12 Ga).....................................................................82
Base Stiffener (10 – 14 Ga) to a Base Boot Connection................................................................82
Close-Punch Connection for a Base Stiffener (10 – 14 Ga) to a Base Boot ....................................83
Close-Punch Connection for a Base Stiffener (8 Ga) to a Base Boot..............................................83
Close-Punch Connection for a Base Stiffener (2 – 6 Ga) to a Base Boot ........................................84
Close-Punch Connection for a Base Stiffener (6 Ga) to a Base Boot..............................................84
Close-Punch Connection for a Base Stiffener (8 Ga) to a Base Boot..............................................85
4PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

Close-Punch Laminated Base Stiffener (2 Ga) with Insert (10 – 12 Ga) to a Base Boot ...................85
Close-Punch Standard Stiffener to a 12–Bolt Pattern Laminated Stiffener with Insert......................86
12–Bolt Pattern Close-Punch Laminated Stiffeners with Insert ......................................................86
Close-Punch 12–Bolt Pattern Laminated Stiffener to Laminated Base Stiffener with an Inserts to
a Base Boot ..................................................................................................................87
Close-Punch 12–Bolt Pattern Laminated Stiffener to Laminated Base Stiffener with an Inserts to
a Base Boot ..................................................................................................................88
Close-Punch 12–Bolt Pattern Laminated Stiffener to Laminated Welded Base Stiffener with an
Insert............................................................................................................................89
Chapter 7 Roof Assembly........................................................................................................................91
Attaching the Inside Stiffener to the Top Outside Stiffener.............................................................92
Attaching the Eave Bracket to the Inside Stiffener ........................................................................94
Attaching the Eave Angle to the Sidewall Sheet ...........................................................................95
Connecting the Tension Member to the Eave Bracket...................................................................97
Assembling a Laminated Rafter..................................................................................................98
Assembling the Rafters..............................................................................................................99
Attaching the Center Collar Rafter Clips to the Rafter ................................................................. 100
About Temperature Cable Brackets and A-Frame Assemblies .................................................... 101
Assembling the Temperature Cable Bracket .............................................................................. 104
Attachment Locations of Purlins to Rafters ................................................................................ 107
Assembling a Laminated Purlin ................................................................................................ 108
Assembling Purlin Number 7 .................................................................................................... 109
Assembling Purlin Number 6 .................................................................................................... 111
Assembling Purlin Number 5 .................................................................................................... 113
Assembling Purlin Number 4 .................................................................................................... 115
Assembling Purlin Number 3 .................................................................................................... 117
Assembling Purlin Number 2 .................................................................................................... 119
Assembling Purlin Number 1 .................................................................................................... 121
Assembling a Double A-Frame.................................................................................................123
Assembling the Outer Center Collar.......................................................................................... 125
Assembling the Lower Stand-Off Bracket to the Outer Center Collar............................................ 127
Center Collar Placement .........................................................................................................128
Guidelines for Assembling and Lifting the A-Frame Rafter Sections............................................. 129
Attaching the A-Frames to the Center Collar.............................................................................. 132
Attaching the A-Frame to the Eave Bracket .............................................................................. 133
Assembling the Roof Panel Clips..............................................................................................134
Installing the Intermediate Purlins ............................................................................................ 135
Attaching the Roof Panels........................................................................................................137
Installing the Roof Flashing ......................................................................................................142
Assembling the Center Collar Brackets to the Inner Center Collar ............................................... 144
Installing the Inner Center Collar to the Outer Center Collar ........................................................ 145
Installing the Top Panels ..........................................................................................................147
Installing the Upper Stand-Off Support Brackets ........................................................................ 151
Installing the Center Cap Plate .................................................................................................152
Installing the Flashing Lock ...................................................................................................... 154
Chapter 8 Accessories ..........................................................................................................................155
Installing the Roof Ladder Steps ...............................................................................................156
Roof Ring Placement (Optional) ............................................................................................... 158
Installing a Roof Ring...............................................................................................................159
Installing the Peak–To–Exhauster Ladder Kit ............................................................................ 161
Preparation for Roof Exhauster Installation................................................................................ 163
Assembling the Roof Exhauster................................................................................................165
Installing the Roof Exhauster Assembly .................................................................................... 166
Installing the Manway Cover ....................................................................................................168
Ladder Section Assembly ........................................................................................................ 170
Inside Ladder Placement .........................................................................................................171
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 5

Installing Inside Ladder Bottom Bracket .................................................................................... 174
Guidelines for Installing the Sidedraw System ........................................................................... 175
Installing the Sidedraw Baffle Chute (Three Post Stiffener) ......................................................... 178
Installing the Sidedraw Discharge Chute ................................................................................... 180
Installing the Wind Rings..........................................................................................................186
Assembling Weather Cover for Roller Valve .............................................................................. 188
Limited Warranty — N.A. Grain Products .............................................................................. 189
6PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

1Safety Precautions
Topics Covered in this Chapter
▪ Safety Guidelines for Bins
▪ Cautionary Symbol Definitions
▪ Safety Cautions
▪ Safety Decals
▪ Safety Sign-off Sheet
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 7

Chapter 1: Safety Precautions
Safety Guidelines for Bins
Safety guidelines must be followed at all times. This manual is written to help you understand safe operat-
ing procedures and problems that can be encountered by the operator and other personnel when using
this equipment. Save these safety guidelines for future reference.
As owner or operator, you are responsible for understanding the requirements, hazards, and precautions
that exist and to inform others as required. Unqualified persons must stay out of the work area at all
times.
Alterations must not be made to the equipment. Alterations can produce dangerous situations resulting in
SERIOUS INJURY or DEATH.
This equipment must be installed in accordance with the current installation codes and applicable regula-
tions, which should be carefully followed in all cases. Authorities having jurisdiction must be consulted
before installations are made.
When necessary, you must consider the installation location relative to electrical, fuel and water utilities.
Personnel operating or working around equipment must read this manual. This manual must be delivered
with equipment to its owner. Failure to read this manual and its safety instructions is a misuse of the
equipment.
This product is intended for the use of grain storage only. Any other use is a misuse of the product.
Sidewall bundles or sheets must be stored in a safe manner. The safest method of storing sidewall bun-
dles is by laying them horizontally with the arch of the sheet upward, like a dome. Sidewall sheets stored
on edge must be secured so that they cannot fall over and cause injury. Use care when handling and
moving sidewall bundles.
CAUTION
This product has sharp edges, which may cause serious injury. To avoid injury,
handle sharp edges with caution and always use proper protective clothing and
equipment.
ST-0035
8PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

Chapter 1: Safety Precautions
Cautionary Symbol Definitions
Cautionary symbols appear in this manual and on product decals. The symbols alert the user of potential
safety hazards, prohibited activities and mandatory actions. To help you recognize this information, we
use the symbols that are defined below.
Table 1-1 Description of the different cautionary symbols
Symbol Description
This symbol indicates an imminently hazardous situation which, if
not avoided, will result in serious injury or death.
This symbol indicates a potentially hazardous situation which, if not
avoided, can result in serious injury or death.
This symbol indicates a potentially hazardous situation which, if not
avoided, can result in minor or moderate injury.
This symbol is used to address practices not related to personal
injury.
This symbol indicates a general hazard.
This symbol indicates a prohibited activity.
This symbol indicates a mandatory action.
ST-0005–2
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 9

Chapter 1: Safety Precautions
Safety Cautions
Use Personal Protective Equipment
• Use appropriate personal protective equipment:
Eye
Protection
Respiratory
Protection
Foot
Protection
Hearing
Protection
Head
Protection
Fall
Protection
Hand
Protection
• Wear clothing appropriate to the job.
• Remove all jewelry.
• Tie long hair up and back.
ST-0004–1
Follow Safety Instructions
• Carefully read all safety messages in this manual and safety
signs on your machine. Keep signs in good condition.
Replace missing or damaged safety signs. Be sure new
equipment components and repair parts include the current
safety signs. Replacement safety signs are available from
the manufacturer.
• Learn how to operate the machine and how to use controls
properly. Do not let anyone operate without instruction.
• If you do not understand any part of this manual or need
assistance, contact your dealer.
ST-0002–1
10 PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

Chapter 1: Safety Precautions
Maintain Equipment and Work Area
• Understand service procedures before doing work. Keep
area clean and dry.
• Never service equipment while it is operating. Keep hands,
feet, and clothing away from moving parts.
• Keep your equipment in proper working condition. Replace
worn or broken parts immediately.
ST-0003–1
Do Not Enter Bin
• Rotating flighting will kill or dismember.
• Flowing material will trap and suffocate.
• Crusted material will collapse and suffocate.
— If you must enter the bin:
1. Shut off and lock out all power sources.
2. Use a safety harness and safety line.
3. Station another person outside the bin.
4. Avoid the center of the bin.
5. Wear proper breathing equipment or respirator.
ST-0061–1
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 11

Chapter 1: Safety Precautions
Unload the Bin Correctly
• Use CENTER FLOOR OUTLET ONLY until NO grain
remains above this outlet.
• Side floor outlets to be used ONLY when above condition
is satisfied.
• Lock all side floor outlets to avoid accidental premature
use.
• See manufacturers instructions for proper use of factory
supplied sidedraw (wall) discharge systems.
ST-0060–1
Prevent Roof Damage Due to Vacuum Pressure
• Roof damage can result from excessive vacuum or internal
pressure from fans or other air moving systems. The manu-
facturer does not warrant this type of roof damage.
• Adequate ventilation or “makeup air” devices must be pro-
vided for all powered air handling systems.
• The manufacturer does not recommend the use of down-
ward flow systems (suction).
• Severe roof damage can result from any blockage of air
passages.
• Operating fans during high humidity or cold weather condi-
tions can cause air exhaust or intake ports to freeze.
ST-0028–2
Sharp Edge Hazard
• This product has sharp edges, which can cause serious
injury.
• To avoid injury, handle sharp edges with caution and always
use proper protective clothing and equipment.
ST-0036–2
12 PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

Chapter 1: Safety Precautions
Rotating Auger Hazard
• Keep clear of rotating augers and
moving parts.
• Do not remove or modify guards or
covers.
• Lock-out power source before making
adjustments, cleaning, or maintaining
equipment.
• Failure to follow these precautions will
result in serious injury or death.
ST-0037–1
Stay Clear of Hoisted Equipment
• Always use proper lifting or hoisting equipment when assem-
bling or disassembling equipment
• Do not walk or stand under hoisted equipment.
• Always use sturdy and stable supports when needed for
installation. Not following these safety precautions creates
the risk of falling equipment, which can crush personnel and
cause serious injury or death.
ST-0047–1
Do Not Overfill the Bin
• Do not overfill bin. Stored grain must be no higher than the
roof eaves at the outer edge.
• Filling the bin above this point creates excessive internal
pressure and can cause swelling and eventual roof failure.
The over filling of a bin can also cause the blockage of roof
vents and eaves, which will lead to a build-up of air pres-
sure causing roof damage.
ST-0050–1
Install and Operate Equipment Properly
• This product is intended for the use of grain storage only.
Any other use is a misuse of the product.
ST-0057–1
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 13

Chapter 1: Safety Precautions
Store Bin Sheets Properly
• Sidewall bundles or sheets must be stored in a safe manner.
The safest method of storing sidewall bundles is by laying
them horizontally with the arch of the sheet upward, like a
dome.
• Sidewall sheets stored on edge must be secured so that
they cannot fall over and cause injury.
• Use care when handling and moving sidewall bundles.
ST-0058–2
14 PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

Chapter 1: Safety Precautions
Safety Decals
The safety decals on your equipment are safety indicators which must be carefully read and understood
by all personnel involved in the installation, operation, service and maintenance of the equipment.
To replace a damaged of missing decal, contact us to receive a free replacement.
GSI Decals
1004 E. Illinois Street
Assumption, IL 62510
Phone: [phone]
Location Decal No. Decal Description
Located next to
aeration system. DC-969 Caution Vacuum Pressure
On bin doors
and roof hatch
covers
DC-2483 Warning Entrapment Hazard
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 15

Chapter 1: Safety Precautions
Location Decal No. Decal Description
On bin door
covers DC-GBC-1A Warning Keep Clear of
Augers
On bin door
covers DC-GBC-2A Warning Unload Instructions
16 PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

Chapter 1: Safety Precautions
Safety Sign-off Sheet
Below is a sign-off sheet that can be used to verify that all personnel have read and understood the safety
instructions. This sign-off sheet is provided for your convenience and personal record keeping.
Date Employee Name Supervisor Name
ST-0007
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 17

NOTES
18 PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin

2General Overview
Topics Covered in this Chapter
▪ General Information
▪ Anchor Bolt Charts
▪ Tools Required for Construction
▪ Guidelines for Proper Storage of Grain Bin Materials Prior to Construction
▪ Overview for a Typical Bin Installation
▪ Guidelines for Construction Procedures and Lifting Jack Usage
▪ Guidelines for Placement of the Decal Sidewall Sheet
▪ Sample Gauge Sheet
General Information
General information, overview and instructions needed before performing work.
Read this manual carefully. This manual will provide instructions on building the sidewall and stiffeners.
You will also need to consult other instructions in building the bin.
These include, but may not be limited to:
• A stiffener and sidewall gauge layout chart. If such a chart is not included with this manual, contact
GSI.
• Roof instructions must be followed. Roof instructions are included in this manual.
• Ladders, roof stairs, roof handrails and other products are covered by separate instruction manuals.
Consult the appropriate accessory manual. Inside ladder instructions are included in this manual.
• Aeration systems and transitions are to be installed according to the instructions provided with the
system or transition.
• It is critical that the anchor bolts are installed and spaced correctly.
Anchor Bolt Charts
Prior to setting any anchor bolts, you must be sure to have the correct anchor bolt placement. This is very
critical for stiffener alignment during bin erection.
NOTE: Refer to the proper chart to find the anchor chord dimensions that correspond to the bin that is
being built.
Start with one anchor bolt and work from it to the left to locate one quarter of the anchor bolts then to the
right to locate another quarter of the bolts. Working off of the last anchor bolts in each quarter, locate the
remaining anchor bolts in the last two quarters.
PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin 19

Chapter 2: General Overview
Figure 2-1 Anchor bolt chords for 105 ft. diameter 3-post bin
Bolt Radius (B) Anchor Quantity
ft and in m
52 –7-1/2 16.040 105
Table 2-1 Anchor chord length table
Chord
(A)
Length
ft and in m
1 3 – 1-13/16 0.960
2 6 – 3-9/16 1.919
3 9 – 5-1/4 2.877
4 12 – 6-13/16 3.831
5 15 – 8-1/4 4.782
6 18 – 9-9/16 5.729
7 21 – 10-5/8 6.671
8 24 – 11-7/16 7.606
9 28 – 0 8.534
10 31 – 5/16 9.457
11 34 – 1/4 10.370
12 36 – 11-13/16 11.273
13 39 – 10-15/16 12.165
Table 2-2 Anchor chord table (cont'd.)
Chord
(A)
Length
ft and in m
14 42 – 9-11/16 13.048
15 45 – 8 13.919
16 48 – 5-13/16 14.778
17 51 – 3-1/16 15.623
18 53 – 11–13/16 16.454
19 56 – 7-15/16 17.270
20 59 – 3-7/16 18.071
21 61 – 10-3/8 18.856
22 64 – 4-9/16 19.623
23 66 – 10-1/8 20.374
24 69 – 2-15/16 21.106
25 71 – 7-1/16 21.820
26 73 – 10-3/8 22.509
20 PNEG-4105A-S21-SH 105 Ft. Diameter Z-Tek Bin