198934 Roof Stairs Installation Instructions

7/27/2019 198934 Roof Stairs Installation Instructions

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Part Number: 1989

Revision

ROOF STAIRINSTALLATION AND STORAGE INSTRUCTIONS

READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY

BEFORE BEGINNING ASSEMBLY OF GRAIN BIN

EFFECTIVE DATE: December, 2012


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NEW IN THIS MANUAL

Added new stair packages to all charts and diagrams

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Limitations as to Scope of Warranty. The warranty does not extend to defects or damagecaused, in whole or in part, by:

i. use of a kind and/or to a degree not reasonably expected to be made of the goods;

ii. improper storage of the goods both prior to and after purchase;

iii. damage caused by, or in the course of, installation or assembly;

iv. any use of the goods which is not an intended use as specified in Westeel'spublished product literature, or otherwise specified by Westeel in writing;

v. any equipment attached to or used in conjunction with the goods;

vi. any field modifications or substitutions to original bin components;

vii. inadequate ventilation or any other circumstance not in keeping with propermaintenance and/or use of the goods;

viii. Acts of God, accident, neglect or abuse of the goods by the purchaser and/or anyother individual or entity; or

ix. Any use or installation inconsistent with Westeels Standard Disclaimers.

4. Limitations as to Manufacturer. The warranty does not cover products sold by Westeelthat are not manufactured by Westeel. In those circumstances, the purchaser is referredto the manufacturer of those products.

6. Limitation of Implied Warranties and Other Remedies. To the extent allowed by law,neither Westeel nor its dealers, nor any company affiliated with Westeel makes any

warranties, representations, or promises as to the quality, performance, or freedom fromdefect of any Product covered by this Warranty.

WESTEEL HEREBY DISCLAIMS, TO THE EXTENT APPLICABLE, ANY AND ALLIMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULARPURPOSE. A PURCHASERS ONLY REMEDIES IN CONNECTION WITH THISWARRANTY ARE THOSE SET FORTH IN THIS WARRANTY. IN NO EVENT WILLWESTEEL, ITS DEALERS, OR ANY COMPANY AFFILIATED WITH WESTEEL BELIABLE FOR INCIDENTIAL, CONSEQUENTIAL OR PUNITIVE DAMAGES.

Some jurisdictions do not allow waivers of certain warranties, so the above waivers may

not apply to you. In that event, any implied warranties are limited in duration to ninety(90) days from delivery of the products. You may also have other rights which vary fromjurisdiction to jurisdiction.

7. Exclusive Warranty. This warranty is the only warranty provided by Westeel and allother warranties and/or commitments, whether express or implied and no matter by whommade, statutory or otherwise, are subsumed and replaced by it and are of no legal effect.If any provision of the warranty is held by a court of competent jurisdiction to be void orunenforceable, in whole or in part, such provision shall be deemed severable and will notaffect or impair the legal validity of any other provision of the warranty.

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Site and Assembly

Unless otherwise specifically provided in writing, Westeel does not take responsibility for anydefects or damages to any property, or injury to any persons, arising from or related to any site orassembly considerations, including but not limited to:

Bin location and bin siting;

Soil conditions and corresponding foundation requirements (note that the examples

provided in manuals are for specifically stated soil conditions);

Bin assembly (Westeel recommends the use of qualified bin installers; contactWesteel for information on installers in your area);

Field modifications or equipment additions that affect the bin structure;

Interconnections with neighbouring structures.

Compliance with all applicable safety standards, including but not limited to fallrestraint systems (ladders or other systems). Local safety authorities should becontacted as standards vary between jurisdictions.

Critical Assembly Requirements

1. Local code and jurisdictional requirements that are applicable to the grain bin installationmust be adhered to.

2. Foundations must be designed for the loads being imparted to them, and for local soilconditions. Westeel foundation guidelines are for a set of stated conditions and may notbe applicable to local conditions.

3. A foundation must provide uniform and level support to the grain bin structure beingsupported. Surface imperfections causing gapping must be remedied. This may involve,

but not be limited to - grouting under the bottom ring of a non-stiffened bin, and shimmingunder the uprights of a stiffened bin or under the legs of a hopper.

4. If extending an existing bin, ensure that the foundation is adequate for the increased loadsthat will be subjected to it.

5. If installing an existing bin on a hopper, ensure that the bin is designed for a hopperapplication, and that the foundation is capable of withstanding the substantial point loadsthat the hopper legs apply. If uprights are present, ensure that they are supported.

6. Ensure that the proper hardware is utilized for all bolted connections. Refer to theHardware Where Used Chart in the Installation Manual. If a shortage occurs do notsubstitute. Take the necessary steps to obtain the proper hardware. Ensure nuts are

tightened to the required torque values as provided in the Installation Manual.7. Refer to the appropriate Installation Manual to ensure a safe, proper structure, in

particular but not exclusively for the wall sheet and upright layouts. Do not deviate fromthe layouts provided.

8. Ensure that an integral end-to-end connection exists between mating uprights.Successive uprights must not overlap.

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9. Vertical tolerances between uprights and wall sheets are tight. This can be affected byjacking techniques, which can allow the tolerance to grow or shrink depending on thetechnique used. The gapping between successive uprights must be monitored to ensurethat upright holes align with bin sheet holes.

10. When installing roof stiffening rings, and if it is necessary to shorten the stiffening ringtubes, shorten them as little as possible. Initially the nuts on the expanders should becentered and as close together as possible. When tightening, share the amount of take-up between expanders such that the nuts remain centered, and the amount ofengagement between all expanders on the same ring is equalized.

11. Before anchoring the bin to the foundation, ensure that the bin is round. The maximumvariation from perfect roundness is 3/4" on the radius (see details in "wall sheet andbottom angle " section of manual). Locate anchor bolts towards the outside of the anchorbolt holes (away from bin) to permit the incremental expansion that can occur with theinitial filling.

Grain Bin Use

1. Do not off-center unload a grain bin. It is imperative to unload from the center of the binfirst, until as much grain as possible has been removed, and only then proceed to unloadfrom the next closest unload gate to the center. Continue utilizing the unload gates insuccession from the center towards the outside. Gate control mechanisms should be

clearly marked and interconnected to prevent an external gate from being opened first.

2. The only exception to center unloading is when a properly designed and installed sidedraw system is utilized. However, as bins tend to go out of round when employing sidedraws, the bin must be completely emptied before refilling.

3. When unloading a bin with a mobile auger through a properly designed auger chute, theentry end of the auger should be pushed into the center of the bin before the auger isengaged. Slower rates of flow are preferable and should not exceed the capacity of an 8auger.

4. Ensure that the inner door panels of grain bin doors are completely closed and latchedbefore filling the grain bin.

5. Never enter a loaded grain bin for any reason. Grain can be a killer.

Product Storage

Rust on Galvanized Parts

1. White rust forms when moisture is allowed to collect on galvanized surfaces that have yet todevelop the durable zinc oxide layer. This zinc oxide layer naturally occurs as the surfaceinteracts with carbon dioxide, and is characterized over time by the dull grey appearance that

weathered galvanized surfaces get.2. Parts that are not well ventilated or well drained can collect water between surfaces anddevelop white rust.

3. White rust is not a structural concern if its development is stopped in the early stages. Alight film or powdery residue can occur after a period of heavy rainfall or a short time ofimproper storage. If white rust has started to develop, separate parts and wipe off anymoisture. Next, using a clean cloth, apply a thin layer of petroleum jelly or food-grade oilto the entire part.

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PLANNING THE LOCATION OF LADDER COMPONENTS

Timing of the positions of ladder, eaves rails, roof stairs or roof ladders, platforms and insideladders, with respect to each other, and other bin components is very important. Consideration ofthis must be given to this during the planning stages before erection of the bin is initiated. Thefollowing are some points to consider.

Inside Ladders The inside ladder sections bolt to existing holes in the horizontal seams of thewall sheets which are spaced at a consistent 9 3/8. The inside ladders should also be centeredon the roof panel that contains the inspection hatch opening. Therefore this roof panel should becentered on the horizontal wall sheet hole that is also the intended center of the inside laddersections. Spinning the top ring angles, and roof sheets, relative to this location on the wallsheets, may be required to achieve optimum fit-up.

Roof Stairs or Roof Ladders The external ladder sections bolt to existing holes in thehorizontal seams of the wall sheets. The roof stairs, or roof ladders, bolt to the ribs of roofpanels. The roof stairs, or roof panels, are also positioned to the right, or left, of the inspectionhatch. The latter should be centered on the inside ladders, if present. It may also be desirable toposition the roof stairs, or roof ladders, relative to some external elements such as overhead

conveyors, or catwalks.

Therefore the roof panel to which the roof stairs, or roof ladders, are bolted to, must be centeredas much as possible, to the center of the external ladder and eaves rails. Spinning the top ringangles, and roof sheets, relative to the wall sheets, to align this roof panel relative to the intendedlocation of the external ladder may be required to achieve optimum fit-up.

Uprights Stiffened bins must be given additional consideration since the externalladder/platform combinations must be mounted on either side of a stiffener location. On astiffened wall sheet the upright locations can be identified by the line of vertical holes set in fromeither end (see page 11).

Therefore, for fully featured bins containing external ladders, eaves rails, platforms, roof stairs orroof ladders, and inside ladders, the following is an example of the timing considerations that

should be undertaken prior to the construction of the bin. Select the location of the various ladder components relative to external elements such

as conveyors or catwalks.

Select the location of the various ladder components relative to other bin elements suchas stencil sheets, door openings, remote vent opener, etc.

Determine the upright location that the external ladder sections and platforms will becentered on. During the initial assembly phases mark these locations on the top ring ofwall sheets. For non-stiffened bins this is not a consideration.

Determine if the inspection hatch is located on the right, or left side of the external laddersections.

Locate the top ring angles and roof panels relative to this position such that the roof panelcontaining the inspection hatch is centered, as much as possible, on the hole in the wallsheet that depicts the center of the inside ladder sections. In general, the center of the

inside ladder sections should be 37 (or 4 horizontal wall sheet spaces @ 9 3/8) to theright or left of the center of the external ladder sections.

In the absence of an internal ladder, center the roof panel to which the roof stairs or roofladders are being bolted to, to the center of the external ladder sections.


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PLANNING THE LOCATION OF LADDER COMPONENTS (cont.)

If there is a ladder/platform combination, it is necessary to position the consecutive sidewall ladder runson either side of an upright. The proper side wall bolt holes are illustrated below for a ladder positioned tothe left of the upright. The mirror image of these holes can be used if the ladder is on the right side of theupright.

PLATFORMA

TTACHMENT

POINTS

UPRIGHTLOCATION

LADDER

ATTACHMENT

POINTS

CENTER THE SIDEWALL LADDER ON THE ROOFLADDER, OR ROOF STAIRS, AS MUCH AS POSSIBLE.ON STIFFENED BINS, THE POSITION OF THESIDEWALL LADDER RELATIVE TO THE UPRIGHTSCAN BE IMPORTANT (SEE BELOW). IT MAY BENECESSARY TO POSITION THE ROOF RELATIVE TOTHE UPRIGHTS WHEN INITIALLY ASSEMBLING TO

AVOID INTERFERENCE WITH THE UPRIGHT.

IF PRESENT, INSIDE LADDERSSHOULD BE CENTERED ON THE

INSPECTION HATCH


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Wall Ladder Assembly Considerations When mated with a roof stairs, the external ladders, cages and eaves railsshould be assembled as per the assembly instructions contained with those products. However, there are a few additionalrequirements as noted below.

1. For 15 54 Diameter: Bolt on the single ladder extension rung (234098) when assembling the pass through rails the top ladder section as shown. The same hardware that is supplied with the ladder package is used. For these bdiameters, the cage assembly remains as per the instructions provided in the ladder installation manual.

For 60 108 Diameter: Bolt on the double rung ladder extension (234103) as illustrated below. This double rungpart is an extension of the ladder. The pass through rails (234505), are raised accordingly. For stability both passthrough rails must be secured to the bottom lip of the first roof stair (Figure 4). The support arms (234504) must alsbe used as described below. For these bin diameters the top safety cage section only must be extended. See theillustration for the difference in the top cage section.

SINGLE LADDEREXTENSION (234098)

Figure 1

Figure 2

54'

108'60' 60' 108'


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2. On the side of the roof stair opposite to the inspection hatch location, the support arms (234504) are installed as pethe instructions in the ladder manual, using the support arm clips (234517) and support arm brackets (234518), if throof stair is properly centered to the external ladder. Alternatively one support arm can be attached to the stairstringer, (Figure 3). If there is interference of the support arm that extends inward, with the stair stringer, anothermeans of properly supporting the pass through rail, inwards and outwards, will need to be developed. The methodproposed in the next step would be adequate.

3. On the side of the roof stair adjacent to the inspection hatch, the support arms (234504) are used to form part of theprotective cage around the inspection hatch (Figure 27). It is very important that the pass through rail is secureto the roof structure in an inwards and outwards direction. Pick the location where the pass through rail crossethe flange of the bottom stair tread. Drill a 3/8 hole completely through the pass rail tube, and through theflange of the stair tread. Secure using a 3/8 x 4 1/2 fully threaded bol t (150475) that is trip le nutted asshown (Figure 4). Secure the bolt to the pass through rail with one nut, and sandwich the flange on the stair treadwith the remaining 2 nuts. Adjust the relative position of the nuts and tighten to lock into position. If possible, alsosecure the second pass through in the manner as well.

LADDERSUPPORT ARMS(234504)

SUPPORT ARM CLIP(234517)

SUPPORT ARMBRACKETS (234518)

PASS THROUGH RAIL

(234505)

Figure3

PASS THROUGH RAILS(234505)

STAIR TREAD

Figure4


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Roof Stair Assembly The following assembly instructions should be used in combination with the layouts provided in theLayout Section for the bin diameter under construction. The layouts provide part numbers, and relative positioning of theprinciple components.

1. In general 3/8 x 1 bolts and nuts are used unlessnoted otherwise. The best method of construction

would be to conduct as much of the assembly onthe ground, as possible, and then lift thecompleted assembly into place and secure to thebin roof structure.

2. If multiple stringer sections are being utilized,assemble these sections together. Consult theLayout Section for the bin diameter in question,for the part numbers being utilized, and thelocation of each. Note that there are left andright stringer section sections and the stringerflanges point outwards. It is also necessary tobolt on the stair treads at this time. For the largerbin diameters with many stair modules it would bedesirable to assemble the stair in manageableparts and bolt the mating assemblies together asthey are fitted to the roof.

3. Z-supports bolt to the stringers at the holelocations in the bottom flanges. There should be aZ-support at every hole location. Note that theflange with the multiple slots is positioneddownwards and mates to the roof ribs. On thetop flange of the Z-support there are threepossible bolting locations. These allow the roof

stairs to be shifted to the right or left in relation tothe underlying roof panels if this is desirable. Ingeneral the center bolting location should beused. However at the bottom end of the roofstairs, it may be desirable to sh ift the Z-suppor t to the right or left if there is thepossibility of it interfering with the operationof the inspection hatch, or if it interferes withthe use of the internal ladder sections.

MATING STRINGER SECTIONS OVERLAP.BOTTOM FLANGES POINT OUTWARD.

LOWER Z-SUPPORTSHIFTED T

AVOIDINSPECTIOHATCH

Figure8

Z-SECTION BOLTS ON SUCHTHAT THE FLANGE WITHMULTIPLE SLOTS POINTS DOWNTHE ROOF AND MATES WITH THEROOF RIBS.

CENTER STAASSEMBLY OUNDERLYINGROOF PANEL

Figure6

Figure7


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5. For extra stability at the top of the stairs, locate the pointwhere the Z-section protrudes across neighboring roof ribs.Using the closest slot in the bottom flange of the Z-support asa guide, drill a 3/8 hole through the underlying rib. Insert a

3/8 x 4 1/2 fully threaded bolt (150475), washers and triplenut as shown. Secure the bolt to the roof rib with one nut, andsandwich the flange on the Z-section with the remaining twonuts. Adjust to take up the slack and tighten to lock inposition. Repeat on the other side, and at other locationswhere convenient. Putting a sealing washer (taken from a3/8 bin bolt) on the inside insures a water tight seal.

6. Attach the vertical hand rail support C-sections as shown. Consult the Layouts for part numbers and positioning.There is a long handrail, that goes on the side of the roof stair opposite to the inspection hatch, and a short section,that goes on the side adjacent to the inspection hatch. The lower vertical hand rail support, on the side of the stairnext to the inspection hatch, is positioned higher up on the stringer to accommodate access to the inspection hatch.

FOR EXTRA STABILITYBOLT THE Z-SECTIONTO OTHER ROOF RIBS

Figure11

ON THE BOTTOM STAIR

MODULE, THE SHORT

HANDRAIL POSITIONED

ON INSPECTION HATCH

SIDE

ON THE BOTTOM STAIR MODULE,

THE LONGER HANDRAIL

POSITIONED ON THE NON-

INSPECTION HATCH SIDE

ON THE BOTTOM STAIR

MODULE, THE VERTICAL

HANDRAIL SUPPORT ON

INSPECTION HATCH SIDE OF

THE STAIR IS POSITIONED

HIGHER UP, TO ACCOMMODATE

SHORTER HANDRAIL

Figure 12


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HOOK SECURES TOSPARE HOLE INHANDRAIL.

Figure15Page 20

7. Bolt on hand rails and mid rails as shown in theTypical Roof Stair Module Assembly. If multiplestair modules are being used, mating handrails fitinto each other at the support post locations. Oneend of one handrail fits into the other end of thesecond handrail as shown. The mid rails are

positioned on the inside of the vertical hand railsupports, with the V positioned as shown.Mating mid rails also overlap.

8. Attach a warning chain (234101) to a spare hole on the upper end of a hand rail, by securing a bolt through the endlink on the chain. Drape the chain across the stairwell opening and hook into a hole (must be drilled) on the opposithandrail

MATING HANDRAILSOVERLAP AT SUPPORTPOST LOCATIONS.

Figure13



Figure13


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Inspection Hatch Cage Assembly (This is supplied as a standard feature of the roof stairs.)

1. Attach three 1 diameter support arms (234504) to the pass through rail adjacent to the inspection hatch asillustrated, using support arm clips (234517). Position the lowest 1 diameter support arm just above the bendin the pass through rail, position the top support arm as high as possib le and positi on the center support

arm midway between the other two.

2. Using the support arms as guides, position the vertical support tube (234069) such that it attaches to the other endsof the support arms using the support arm clips, bridges the eave of the roof panel, and aligns alongside the wallsheet. Using the holes in the vertical support tube as a guide, drill 3/8 holes through the crest of the mating wallsheet corrugations and attach using 3/8 x 2 bolts. Putting the sealing washer on the inside insures a water tightseal. Attach the plastic cap (234559) to the vertical support tube.

PLASTIC CAP(234559)

SUPPORT ARM CLIPS

MIDDLE SUPPORTARM POSITIONEDMID-WAY BETWEENUPPER AND LOWER

VERTICALSUPPORT TUB(234069)

BOTTOM SUPPOR

ARM (234100)

SUPPORT ARMS(234504)

UPPER SUPPORT ARMPOSITIONED AS HIGH ASPOSSIBLE.

LOWER 1DIAMETERSUPPORT ARMPOSITIONED JUST

ABOVE BEND INPASS THROUGHRAIL.

BOTTOM, LOWER 1 DIAMTERSUPPORT ARM POSITIONEDBELOW BEND IN PASS THROUGHRAIL.

POSITION VERTICALSUPPORT TUBE,DRILL WALL SHEETTO MATCH ANDSECURE WITHHARDWARE.

PASS THROUGHRAIL

Figure16


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6. Attach the final support arm (234504) to the vertical support tube, and to the nearest roof rib, as shown, utilizing thsupport arm clip and support arm bracket, as shown. Drill into, and secure to the roof rib as required.

ROOF STAIR HARDWARE USAGE

All roof stair and related connections are made using 3/8" x 1" bolts and 3/8" nuts, except for the following:

- Clamps built into Top Cage Hoops secure using 3/8" x 1 " bolts- Pass Through Rails secure to sidewall ladder using 3/8" x 2 " bolts (these are supplied with the ladder)- Vertical Support Tube secures to the wall sheet using 3/8" x 2 " bolts- Pass Through Rails secure to front lip of stair tread using 3/8" x 4 " fully threaded bolts and 3 - 3/8" nuts at each

location- For stability, "Z" supports secure to roof ribs using 3/8" x 4 " fully threaded bolts and 3 - 3/8" nuts at each location- To keep the horizontally placed support arms from slipping down the vertical supports, secure using the #10 x " self

drilling screw

234085 - Roof Stairs Hardware Package

Part Number Description Quantity

234943 Bolts - 3/8" x 1" (bag of 50) 4

193797 Bolts - 3/8" x 1 1/2" 5

150517 Bolts - 3/8" x 2 1/2" 7

150475 Bolts - 3/8" x 4 1/2" 18

235951 Nuts - 3/8" (bag of 100) 2

900461 Self Drill Screws - #10 x 3/4" 14

234517 Support Arm Clip 7

234559 Pipe Cap 3

234101 Chain 2

198934 Manual - WC Roof Stairs1

USE SUPPORT ARM ASBRACE TO SECUREVERTICAL SUPPORTTUBE.

Figure 20


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4. The support posts should be roughly distributed among the available roof ribs for the roof in question. Startwith the support post that is across from the roof stairs. Using the peak rail tubes as guides, position thissupport post such that it mates with both tubes at the two desired locations. Drill the roof rib to mate withthe holes in the support clip. Secure the support post assembly to the ribs and to the safety tubes. Thesupport posts should be vertical.

USE THE PEAK RAIL TUBES

LOOSELY SECURED

TO THE ROOF STAIR, TO LOCATE

THE SUPPORT

POST ACROSS FROM THE ROOF

STAIRS.

5. Locate the remaining support posts such that the spaces between them are roughly equal, secure to thepeak rail tubes using the U-bolts. Drill into the roof ribs and secure with the hardware provided.

DISTRIBUTE REMAINING PEAK RING SUPPORT

POSTS EQUALLY AROUND THE ROOF

SECURE ON ROOF RIBS

6. Drill in self drilling screws from the back of the handrail supports and extensions (as per #3) to secure theend of the peak rail tubes at all four locations

USE SELF DRILLING SCREWS

TO SECURE PEAK RING TUBES

AT ROOF STAIR HAND RAIL

SUPPORT LOCATIONS

Figure 24

Figure 25

Figure 26


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3. Distribute the remaining deck pieces around the roof such that the amount of overlap between adjacentpieces is roughly equal. Al ign the deck pieces such that at l east two of the pi lo t holes on the wideend are squarely aligned over the center of the support ring and secure with the self drilling screws.

DISTRIBURE AMOUNTOF OVERLAP AMOUNG

DECK PIECES

POSITION PILOT HOLES IN DECK

PIECES DIRECTLY OVER SUPPORT

TUBE AND SECURE WITH SELF-

DRILLING SCREWS

4. Position the toe board pieces (234119) such that they loop around the outside circumference of the deckpieces and bridge between the support posts. Overlap mating toe board pieces at the support postlocations and secure to the support posts using self drilling screws. It may be required to shortensome of the toe board pieces to prevent unsightly overhang.

POSITION TOE BOARDSTRIPS SUCH THAT THEY

ARE INSIDE THE OUTER

EDGE OF THE PLATFORM

PIECES

SECURE WITH SELF-DRILLING

SCREWS AT ALL POST LOCATIONS

Figure 31

Figure 32


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CATWALK ACCESS

Catwalks can be accessed from a roof stair with the aid of a plate fabricated as shown. The platecan be bolted to the back off any stair tread on the roof stair and then used to support the bottomof a standard ladder section (234500) which could then tie in with an access point on the catwalk.Ladder sections must be supported structurally every 44.


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Page 39

APPENDIX II PEAK RAIL AND PLATFORM PARTS IDENTIFICATION

96

234119 Platform Toe Board

234091 Peak Rail Tube85 diameter (1.25 OD Tube) 234094 Peak Rail Tube

109 diameter (1.25 OD Tube)

234518 Support Arm Bracket

234112 Peak Platform Support RingSmall - 85 diameter (1.66 OD Tube)

234113 Peak Platform Support RingLarge - 109 diameter (1.66 OD Tube)


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450 Desautels, P.O. Box 792Winnipeg, Manitoba CANADA R3C 2N5Phone: 204-233-7133 Fax: 204-235-0796

www.westeel.com

Documents

198934 Roof Stairs Installation Instructions