GSI PNEG-1276 User Manual
PNEG-1 27 6
Top Dry Autoflow Construction
Manual 24', 30' and 36'
Construction and Owner ’s Manual
PNEG-1276
Date: 11-29-12
2 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
Table of Contents
Contents
Chapter 1 Safety .....................................................................................................................................................5
Safety Guidelines ... ... ... ... ...................................................................................................................... 5
Chapter 2 Decals ....................................................................................................................................................6
Roof Damage Warning and Disclaimer ................................................................................................. 6
Chapter 3 Foundation Requirements ...................................................................................................................9
Foundation Requirements for Top Dry Bins (4.00" Top Dry Bin Corrugation) ...................................... 9
Inline Centrifugal Fan Pad ................................................................................................................... 12
Duct and Drying Fan Pad Optional ..................................................................................................... 13
Anchor Bolt Placement ........................................................................................................................ 14
Frost Free Pad (Top Dry Bins) ............................................................................................................ 15
Frost Free Foundation (Top Dry Bins) ................................................................................................ 16
Chapter 4 Hardware .............................................................................................................................................17
Hardware/Bolting Requirements ......................................................................................................... 17
Location of Accessories ...................................................................................................................... 20
Very Important ..................................................................................................................................... 21
Chapter 5 Sidewall Construction ........................................................................................................................22
Sidewall Gauges .................... ... ... .... ... ... ... ... .... .......................................... ... ... ... .... ............................ 22
Sidewall Erection Instructions ................ ... ... .... ... ... ... .... ... ... ... .... ... ... ... ... .... ... ...................................... 23
Caulking Detail .................................................................................................................................... 24
Lifting Jacks and Brackets .................................................................................................................. 25
Lifting Jack Usage .................................. ... ... .... ... ... ... .... ... .......................................... ... ...................... 26
Chapter 6 Stiffener Details ..................................................................................................................................27
Stiffener Gauges .................... ... ... .... ... ... ... ... .... .......................................... ... ... ... .... ............................ 27
Outside Stiffeners ................................................................................................................................ 28
Top Stiffener Starting Location ............................................................................................................ 29
Stiffener Installation and Location ....................................................................................................... 30
Bolting Requirements ................................ ... .... ... ... ... .... ... ... .......................................... ... ................... 31
Stiffener and Seam Locations ............................................................................................................. 31
Chapter 7 “C” Channels ......................................................................................................................................32
Stiffener to “C” Channel Bracket Installation ....................................................................................... 32
“C” Channel Installation ................ .... ... ... .......................................... ... ... .... ... ...................................... 33
Center Collar Assembly ...................................................................................................................... 34
Chapter 8 Installation ..........................................................................................................................................36
Rafter Installation and Floor Support Angle Attachment ..................................................................... 36
Purlin Installation ................................................................................................................................. 37
Dump Hopper Installation ....................... ... ... .... ... ... ... .... ... ... ... .... ......................................... ................ 40
Floor Sheet Installation ....................................................................................................................... 40
Flashing Bolt Installation ..................................................................................................................... 41
Eave Flashing Installation ................................................................................................................... 41
Eave Flashing Splice ........................................................................................................................... 42
Outer Dump Chutes ............................................................................................................................ 43
24' Leveling Band Post Installation ..................................................................................................... 44
30' Leveling Band Post Installation ..................................................................................................... 45
36' Leveling Band Post Installation ..................................................................................................... 46
Leveling Band Installation ......................... ... .... ... ... .......................................... ... .... ... ... ... ... ................ 46
24' Leveling Band Location ................................................................................................................. 47
30' Leveling Band Location ................................................................................................................. 48
36' Leveling Band Location ................................................................................................................. 50
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 3
Table of Contents
Chapter 9 Assembly ............................................................................................................................................52
Pulley Assembly ...................... ... ... .......................................... .... ... ... ... ............................................... 52
Dump Chute Chain Assembly ............................................................................................................. 53
Center Cone Assembly ....................................................................................................................... 55
Center Cone Installation ...................................................................................................................... 55
Roof Assembly .................................................................................................................................... 56
Perforated Center Band ...................................................................................................................... 57
42" Fan Diffuser Instructions and Installation ...................................................................................... 58
Fan Entrance Sheets .......................................................................................................................... 60
Access Door Platform (TDP-5012) ...................................................................................................... 62
Small Platform Assembly ........ ... ... .... ... ... ... ... .... ... ... ... .... .......................................... ... ... ... ... ............... 63
Large Platform Assembly .................................................................................................................... 65
Cross Over Platform Assembly for Use with Stairs (TDP-5013) ......................................................... 67
Transition Installation (TR-4734) ......................................................................................................... 68
Transition Assembly (TR-4734) .......................................................................................................... 69
Top Dry Access Door Assembly (TD-100996) .................................................................................... 70
Chapter 10 Accessories ......................................................................................................................................71
2 Ring Door Installation and Accessories .......................................................................................... 71
2 Ring Door Assembly ....................................................................................................................... 72
Optional Bin Step Assembly (WD-042) ............................................................................................. 74
Base Angle ........................................................................................................................................ 75
Base Stiffener Shim ........................................................................................................................... 75
Chapter 11 Warranty ............................................................................................................................................77
4 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
1. Safety
DANGER
WARNING
CAUTION
NOTICE
This is the safety alert symbol. It is used to alert you
to potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
WARNING indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION, used with the safety alert symbol, indicates a
hazardous situation which, if not avoided, could result in
minor or moderate injury.
NOTICE is used to address practices not related to
personal injury.
DANGER indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
Safety Guidelines
This manual contains information that is important for you, the owner/operator, to know and understand.
This information relates to protecting personal safety and preventing equipment problems. It is the
responsibility of the owner/operator to inform anyone operating or working in the area of this equipment
of these safety guidelines. To help you recognize this information, we use the symbols that are defined
below. Please read the manual and pay attention to these sections. Failure to read this manual and its
safety instructions is a misuse of the equipment and may lead to serious injury or death.
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 5
2. Decals
The manufacturer does not warrant any roof damage caused by excess ive v acuum or internal
pressure from fans or other air moving systems. Adequate ventilation and/or “makeup air”
devices should be provided for all powered air handling systems. The manufacturer does not
recommend the use of downward flow systems (suction). Severe roof damage can result from
any blockage of air passages. Running fans durin g high humidity/cold weather conditions can
cause air exhaust or intake ports to freeze.
Roof Damage Warning and Disclaimer
CAUTION!
Excessive vacuum (or pressure) may
damage roof. Use positive aeration
system. Make sure all roof vents are
open and unobstructed. Start roof
fans when supply fans are started.
Do not operate when conditions exist
that may cause roof vent icing.
DC-969
6 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
2. Decals
Rotating flighting will
kill or dismember.
Flowing material will
trap and suffocate.
Crusted material will
collapse and suffocate.
Keep clear of all augers.
DO NOT ENTER this bin!
Failure to heed these
warnings will result in
serious injury or death.
If you must enter the bin:
1. Shut off and lock out all power.
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.
DC-GBC-1A
ATTENTION: The decal shown below should be present on the outside of the door cover of the 2 ring,
24" porthole door cover and the roof manway cover. If a decal has been damaged or is missing in any of
these locations, contact the manufacturer for a free replacement decal.
GSI Decals
1004 E. Illinois St.
Assumption, IL. 62510
Phone: 1-217-226-4421
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 7
2. Decals
Failure to heed these warnings
could result in serious injury, death,
structural damage or collapse of tank.
1. Use CENTER FLOOR OUTLET ONLY until NO grain
remains above this outlet.
2. Side floor outlets to be used ONLY when above
condition is satisfied.
3. Lock all side floor outlets to avoid accidental
premature use.
4. See manufacturers instructions for proper use of
factory supplied sidedraw (wall) discharge systems.
UNLOADING INSTRUCTIONS:
DC-GBC-2A
WARNING
DON’T
DO
ATTENTION: The decal shown below should be present on the outside of the door cover of the 2 ring,
24" porthole door cover and the roof manway cover. If a decal has been damaged or is missing in any of
these locations, contact the manufacturer for a free replacement decal.
GSI Decals
1004 E. Illinois St.
Assumption, IL. 62510
Phone: 1-217-226-4421
8 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
3. Foundation Requirements
Foundation Requirements for Top Dry Bins (4.00" Top Dry
Bin Corrugation)
Requirements
The following foundation recommendations are a revision to earlier manuals distributed by the GSI Group.
NOTE: There are changes in founda tion dimensions from past publications. These dimensions are critical
to the proper installation and function of each foundation.
Selecting the Proper Site
The selected site should be level, firm and free from underlying debris. The bin can be installed
satisfactorily on slopes, but as the slope increases, additional labor and materials are required for the
foundation. The concrete foundation surface must be level. If some fill is required, it should be watered
and tamped thoroughly to prevent uneven settling from the weight of th e bin. Naturally, the site must allow
convenient access for easy loading and unloading, plus provide additional space for future units. Also
consider the positioning of handling equipment, availability of electricity and the placement of fans,
heaters, and gas tanks.
Scribe the Diameter
Having determined the center of the site, drive a small 2 x 4 in the ground to mark the center point of the
foundation. The top of the stake should be the same height as the finished foundation will be. Using one
large spike, nail a straight 2 x 4 (approximately 2' longer than the radius of the bin) to the top of the center
spike. The swiveling 2 x 4 will act as a compass, enabling you to scribe the correct diameter of the
foundation and later locate the anchor and stiffener bolt locations. (NOTE: Making the 2 x 4 2' longer than
the radius allow the 2 x 4 to also be used as a leveling device and for pulling concrete.) (See Figure 3A.)
Figure 3A
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 9
3. Foundation Requirements
Foundation Requirements for Top Dry Bins (4.00" Top Dry
Bin Corrugation) (Continued)
Prepare the Foundation Forms
Having scribed the diameter of the foundation, proceed by digging the foundation’s footing. This consists
of a large circular trench dug inside the foundation line, (Refer to foundation details for necessary
information). Once the footing has been dug, you are ready to build the forms. It is important that the forms
be rigid enough to hold its shape against the poured concrete. Also, the foundation must be flat. Sloped
floors cannot be used in drying bins. A carpenter’s level placed on top of the compass 2 x 4 will enable
you to set the top of the forms to match the top of the center stake. Check the form work with a transit
to ensure a uniform elevation for the entire foundation. The foundation should be level within 1/8" on
non-stiffened tanks and 1/4" on stiffened tanks at bin wall perimeter. Stiffened tanks must be shimmed
level. (See Figure 3B.)
Figure 3B
All foundation specifications shall be construed as recommendations only. Because of the many variable
conditions in actual installation, the GSI Group, assumes no liability for results arising from the use of such
recommendations.
Alternate Foundation Forms
There are two (2) styles of foundation forms commonly used. The first is the circular form shown in
Figure 3B. The second style of foundation can be made of 2" x 8" boards set into a square with the
corners blocked off to form an octagon. This eight sided form will approximate a circle and can also be
constructed easily.
10 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
3. Foundation Requirements
Foundation Requirements for Top Dry Bins (4.00" Top Dry
Bin Corrugation) (Continued)
Second Style of Foundation
Figure 3C
Place the Reinforcement
Once the forms and trench have been prepared, begin the placement of reinforcement rods at various
levels in the foundation’s footing. See the appropriate charts and drawings for the bin to determine
requirements and positions of the reinforcement. The reinforcement rods offer their greatest strength
when lapped properly and connected by wiring or welding. Next, place a minimum of 2" of co mpacted sand
on the inside section of the foundation to provide a good base for the concrete and protect against rodents.
The sand should then be covered with four (4) mil polyethylene plastic which will act as a moisture barrier.
Two (2) layers of 6 x 6 wire mesh should then be added to the entire area of the foundation to complete
the preparation of the bins foundation. (See Figure 3C.)
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 11
3. Foundation Requirements
Inline Centrifugal Fan Pad
Placement of the Fan Pad: GSI Transitions/Fans only.
If a fan is to be installed, refer to Figure 3D to determine the concrete pad size.
1. The top of this pad should be level with the top of the bin’s foundation.
2. Recommended pad thickness is 4" minimum.
3. Front of pad should be perpendicular to bin wall.
4. Pad for heater not required.
IMPORTANT: Fan pad and fan must be leveled an d smooth for proper operation. Vibration problems can
result from improper fan leveling.
Figure 3D
12 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
3. Foundation Requirements
Duct and Drying Fan Pad Optional
Placement of the Duct Fan Pad: GSI Top Dry Duct System only.
Refer to Figure 3E to determine the duct pad size.
1. The top of this pad should be level with the top of the bin’s foundation.
2. Recommended pad thickness is 4" minimum.
3. Front of pad should be perpendicular to bin wall.
Figure 3E
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 13
3. Foundation Requirements
Anchor Bolt Placement
Having poured and leveled the concrete, use the center stake and straight 2 x 4 again to find the bolt circle
radius for the outside hold-down brackets. Select a starting point and stretch a pre-measure d chord along
the imaginary circle formed by the bolt circle radius. Take into consideration the placement of these bolts
so as not to interfere with the positions of bin doors and transitions. (Refer to below chart for necessary
radius and chord lengths.) Take the time and work carefully since accuracy is important.
NOTE: Top edge of slab where the bin wall sets must be held to within 1/8" of level.
Bin Diameter “B” Bolt Circle Radius # of Anchors “E” Chord Distance
24' 12' - 2-7/8" 16 4' - 9-5/16"
30' 15' - 2-11/16" 20 4' - 9-1/8"
36' 18' - 2-1/2" 24 4' - 9-1/16"
Figure 3F
14 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
3. Foundation Requirements
* Contact GSI Engineering for heights greater than 6".
Frost Free Pad (Top Dry Bins)
NOTES:
1. Foundation site should be well drained and free of vegetation or debris.
2. Foundation design is based on a minimum soil bearing capacity of 3000 PSI. If soil bearing capacity
is in doubt, contact a local soil testing engineer.
3. Concrete shall have a minimum compressive strength of 3000 PSI at 28 days.
4. Requirements for reinforcement do not include overlap.
5. Lap all circumferential bars 35 bar diameters and stagger all laps in plan 3'-0".
6. All material used for backfill inside the ring wall should be clean, well graded, crushed stone of
sand-gravel mixture. Backfill should be placed at 6" lifts and well compacted.
7. The optional #4 rebar grid can be substituted for the wire mesh in most cases. Place the #4 bars in
the pad in an 18" x 18" grid.
Figure 3G
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 15
3. Foundation Requirements
Frost Free Foundation (Top Dry Bins)
Diameter of Bin: 24'
Corrugation: 4.00"
Ring # B N
6 1'-1" 2 12'-9" 900 600 200 13
7, 8 1'-9" 2 12'-9" 900 600 200 15
9, 10 2'-6" 3 13'-2" 900 600 400 18
Outside
Radius
Sq. Ft. Mesh
6 x 6 - 6/6
Optional #4
18" x 18" Grid (Ft.)
Length #6
Bar (Ft.)
Diameter of Bin: 30'
Corrugation: 4.00"
Ring # B N
6 1'-2" 2 15'-9" 1400 900 200 19
7, 8 1'-10" 2 15'-10" 1400 900 200 21
9, 10 2'-8" 3 16'-1" 1400 900 500 25
11 3'-8" 4 16'-5" 1400 900 700 29
Outside
Radius
Sq. Ft. Mesh
6 x 6 - 6/6
Optional #4
18" x 18" Grid (Ft.)
Length #6
Bar (Ft.)
Diameter of Bin: 36'
Total Cu. Yds.
Concrete
Total Cu. Yds.
Concrete
Corrugation: 4.00"
Ring # B N
6 1'-3" 2 18'-9" 2000 1300 300 26
7, 8 2'-0" 2 18'-11" 2000 1300 400 30
9, 10 2'-10" 3 19'-0" 2000 1300 600 33
11, 12 3'-11" 4 19'-6" 2000 1300 900 39
Outside
Radius
Sq. Ft. Mesh
6 x 6 - 6/6
Optional #4
18" x 18" Grid (Ft.)
Length #6
Bar (Ft.)
Total Cu. Yds.
Concrete
16 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
Hardware/Bolting Requirements
Grade 2
Grade 2 bolts are designated with a plain head.
Grade 5
Grade 5 bolts are designated by three (3) slash marks on the head. All 5/16" diameter bolts are
to be grade 5 or higher.
Grade 8
Grade 8 bolts are designated by six (6) slash marks on the head.
Grade 8.2
Grade 8.2 bolts are designated by six (6) slash marks on the head in a sunrise pattern.
All 3/8" diameter bolts are to be grade 8 or 8.2.
Under no condition shall any other bolts be substituted for those supplied by GSI.
4. Hardware
IMPORTANT: Do not tighten bolts to exceed the torque specifications listed below.
Important Hardware Usage
20 Gauge through 15 gauge sidewall sheets, use 5/16" x 3/4" bolts and nuts (S-275).
14 Gauge and 13 gauge sidewall sheets, use 5/16" x 3/4" bolts and nuts (S-275).
Use 5/16" x 1-1/4" (S-277) for attaching floor flashing to the sidewall.
Bolt Size
5/16"-18 15 20
3/8"-16 35 42
7/16"-14 65 72
1/2"-13 95 105
Minimum Maximum
Torque (Ft. Lbs.)
Figure 4A
CAUTION
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 17
4. Hardware
0.3125" x 0.750" Pre-assembled with a steel backed neoprene washer.
This bolt is used to connect horizontal and vertical seams for 13 gauge and thinner sidewall sheets
to each other and to bolt the stiffeners to the sidewall sheets. It is also used in attaching roof panels
to the top sidewall sheet and attaching roof panels and flashing to the center collar.
0.3125" x 1.250" Pre-assembled with a steel backed neoprene washer .
This bolt is primarily used to connect roof panels together where they overlap. It is also used at the
bottom of the flat bottomed bins to attach the base angle to the sidewall sheet. A small number of
these are provided for joints and splice plates (FC-42076) for the stiffeners to sidewall connection.
Refer to Top Dry Tank Bolting Requirements for Complete Bolt Usage
18 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
Refer to Top Dry Tank Bolting Requirements for Complete Bolt
0.375" x 1.000" Hex flanged head without a plastic sealing washer.
This bolt is used to splice the stiffeners together on the flang es. A steel flat washer is used on the
nut side of the connection. They are also used on “C” channel splices and mounting “C” channel
to wall bracket.
0.375" x 1.500" Hex flanged head without a plastic sealing washer.
This bolt is used to attach the wall bracket t o the sidewall and stiffener. A steel flat washe r is used
on the nut side of the connection.
Usage (Continued)
4. Hardware
NOTE: The only washers shipped loose with the bins are the steel flat washers. The 5/16" steel flat washer
(S-845) is used where the base angle attaches to the sheet and some are used at the main eave
clips. The 3/8" steel flat washers (S-248) are used at the stiffener splices and some are used in the
roof rafter splices.
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 19
4. Hardware
Location of Accessories
Below is a typical Top Dry bin layout showing suggested locations of Top Dry accessories. When locating
the manway be sure the outside ladder will not interfere with other accessories below. Roof vents sh ould
be spaced evenly around the roof. (Quantity will vary with individual systems.) (See Figure 4B.)
NOTE: The Top Dry system should be provided with a dependable equipment ground.
Figure 4B
20 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
Very Important
4. Hardware
Figure 4C Sheet Shown as Viewed from the Inside of Bin
All 4.00" corrugated sidewall sheets must be placed correctly.
4.00" corrugated sidewall sheets have a top and bottom.
All
Failure to observe this will not allow the door to fit properly.
Carefully review the erection manual and place sidewall sheets as shown in Figure 4C.
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 21
5. Sidewall Construction
Sidewall Gauges
Tank Dia.
(Ft.)
# of Rings
of Sidewall
24 5 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga.
24 6 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga.
24 7 18 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga.
24 8 18 Ga. 18 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga.
24 9 17 Ga. 18 Ga. 18 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga.
24 10 17 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga. 20 Ga.
30 5 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
30 6 18 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
30 7 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
30 8 17 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
30 9 17 Ga. 17 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
30 10 16 Ga. 17 Ga. 17 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
30 11 16 Ga. 17 Ga. 17 Ga. 17 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
Sidewall
Base
Ring
Sidewall
Ring #2
Sidewall
Ring #3
Sidewall
Ring #4
Sidewall
Ring #5
Sidewall
Ring #6
Sidewall
Ring #7
Sidewall
Ring #8
Sidewall
Ring #9
Sidewall
Ring #10
Sidewall
Ring #11
36 5 17 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
36 6 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
36 7 16 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
36 8 16 Ga. 16 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
36 9 16 Ga. 16 Ga. 16 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
36 10 15 Ga. 16 Ga. 16 Ga. 16 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
36 11 14 Ga. 15 Ga. 15 Ga. 16 Ga. 16 Ga. 17 Ga. 18 Ga. 18 Ga. 18 Ga. 18 Ga. 20 Ga.
NOTE: Fan entrance sheets and plenum access door sheets are located in the second ring fr om the top
of the bin, just below the upper drying floor.
22 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
5. Sidewall Construction
Sidewall Erection Instructions
Before bolting the sidewall sheets together, check that you have the proper gauge steel for the first ring.
The higher gauge numbers denote the thinner materials. (For example, 22 gauge material is thinner than
14 gauge.) In erecting most grain bins the thinnest material usually goes on top, therefore the first sid ewall
ring you assemble will be the top ring of the bin. Check the various gauges of the bin with the color code
chart and begin building accordingly REMEMBER.....Assemble the top ring first.
Once you have selected the proper gauge material, begin assembling all sidewall sheets in the following
manner: Standing on the inside the bin, place the left panel to the inside with the right panel to the outside.
(See Figure 5A.) Check to see that the sidewall sheet is “Right side up”.
Refer to Page 21
for details.
Figure 5A
Gauge Color Code
22 White
20 Red
19 Black/Yellow
18 Orange
17 Pink/Light Blue
16 Blue
15 Brown/Red
14 Green
13 Yellow/Blue
12 Black
11 Pink
10 Light Blue
9 Blue/Orange
8 Yellow
PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 23
5. Sidewall Construction
Sidewall Erection Instructions (Continued)
After assembling the second ring, lift the top ring sheets in place, add top stiffeners, build the Top Dry
floor, then the roof.
NOTE: The sidewall sheets used for the top ring are punched to accommodate the eave flashing bolts.
NOTE: The fan entrance sheet and access door are located in the second ring. Attach the top stiffeners,
leaving out the seven (7) bolts indicated in Figure 5B at each stiffener location. Insta ll the flashing
bolts from the outside and tighten first nut on the inside of the bin.
Figure 5B
Caulking Detail
NOTE: The rope caulking is installed before each sheet is assembled. Apply rope caulking between the
last vertical row of bolts and edge of outside sheet. There is sufficient caulking for all vertical seams
on storage and drying bins. Wipe sheet clean where caulking is to be applied. (See Figure 5C.)
Figure 5C Standard Sidewall Sheets as Viewed from Inside
24 PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36'
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