SPECIFICATION 833
BRIDGE BALUSTRADES
Copyright MAIN ROADS Western Australia
MAIN ROADS Western Australia
Contract xxx/xx
Specification 833 Bridge Balustrades
Document 04/10143 Issue 3/08/12
Page 1 of 13
SPECIFICATION 833
BRIDGE BALUSTRADES
REVISION REGISTER
Date
03/08/2012
Clause
Number
833.02
Description of Revision
Deleted reference to AS
2203 and AS/NZS 1553
Authorised
By
A/SDSE
Inserted references to
welding consumables
standards AS/NZS ISO
17632:2006, AS/NZS
ISO17634:2006, AS/NZS
ISO 18276:2006 and
AS/NZS 4855:2007
23 Sept 08
833.02
References - amendments to
Standards title AS/NZS 1553
SDSE
1 Aug 06
Whole
document
Complete revision of Issue
2.1 to new format
MCP
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Specification 833 Bridge Balustrades
Document 04/10143 Issue 3/08/12
Page 2 of 13
CONTENTS
Clause
Page No
GENERAL ...................................................................................................................... 4
833.01 SCOPE……………………………………………………………………………….4
833.02 REFERENCES………………………………………………………………………4
833.03 – 833.05 NOT USED……………………………………………………………...5
PRODUCTS AND MATERIALS ..................................................................................... 5
833.06 SPECIFICATIONS FOR STEEL…………………………………………………..5
833.07 TEST CERTIFICATES……………………………………………………………..5
833.08 IDENTIFICATION RECORDS……………………………………………………..6
833.09 IDENTIFICATION MARKS…………………………………………………………6
833.10 STORAGE……………………………………………………………………………6
833.11 – 833.25 NOT USED………………………………………………………………6
FABRICATION ............................................................................................................... 6
833.26 GENERAL……………………………………………………………………………6
833.27 SHOP DRAWINGS………………………………………………………………….6
833.28 VERTICALITY OF POSTS AND BALUSTERS…………………………………..7
833.29 CURVING OF RAILS……………………………………………….......................7
833.30 CUTTING AND EDGE TREATMENT……………………………………………..7
833.31 SPLICES……………………………………………………………………………..7
833.32 BOLTING…………………………………………………………………………….7
833.33 WELDING……………………………………………………………………………8
833.34 PROTECTIVE TREATMENT………………………………………………………8
833.35 TRANSPORT, HANDLING AND STACKING……………………………………..8
833.36 – 833.40 NOT USED………………………………………………………………8
ERECTION ..................................................................................................................... 9
833.41 GENERAL……………………………………………………………………………9
833.42 TOLERANCES………………………………………………………………………9
833.43 – 833.80 NOT USED………………………………………………………………9
AS BUILT AND HANDOVER REQUIREMENTS ............................................................ 9
833.81 – 833.90
NOT USED………………………………………………………………9
CONTRACT SPECIFIC REQUIREMENTS ..................................................................... 9
833.91 – 833.99
NOT USED………………………………………………………………9
ANNEXURE 833A ........................................................................................................ 10
SUPPLY OF BALUSTRADE ITEMS BY THE PRINCIPAL .......................................... 10
833.91 SUPPLY OF MATERIAL BY THE PRINCIPAL…………………………………12
833.92 REMOVAL OF EXISTING BALUSTRADE………………………………………12
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Contract xxx/xx
Specification 833 Bridge Balustrades
Document 04/10143 Issue 3/08/12
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SPECIFICATION 833
BRIDGE BALUSTRADES
GENERAL
833.01
SCOPE
1.
The work under this specification consists of the supply,
fabrication, protective treatment and erection of steel handrailing and
balustrading.
2.
Minor steel items are covered in Specification 831.
833.02
REFERENCES
1.
Australian Standards, MAIN ROADS Western Australia
Standards and MAIN ROADS Western Australia Test Methods are
referred to in abbreviated form (e.g. AS 1234, MRS 67-08-43 or WA
123). For convenience, the full titles are given below:
Australian Standards
AS 1100
Technical Drawings
AS 1101.3
Graphical Symbols for General Engineering - Welding and Nondestructive Examination
AS 1111
ISO Metric Hexagon Bolts and Screws – Product Grade (Commercial)
AS 1112
ISO Metric Hexagon Nuts – Including Thin nuts, Slotted Nuts and Castle
Nuts
AS 1163
Structural Steel Hollow Sections
AS 1237
Plain Washers for Metric Bolts , Screws and Nuts for General Purposes
AS 4100
Steel Structures
Australian/New Zealand Standards
AS/NZS 1252
High Strength Bolts with Associated Nuts and Washers for Structural
Engineering
AS/NZS 1554.1
Structural Steel Welding - Welding of Steel Structures
AS/NZS 1554.2
Structural Steel Welding - Stud Welding (steel studs to steel)
AS/NZS 3678
Structural Steel - Hot Rolled Plates, Floorplates and Slabs
AS/NZS 3679
Structural Steel - Hot Rolled Bars and Sections
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Document 04/10143 Issue 3/08/12
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Welding consumables – Covered electrodes for manual metal arc
Of non-alloy and fine grain steels – Classification
AS/NZS 4855
AS/NZS ISO 17632 Welding consumables – Tubular cored electrodes for gas shielded
and on-gas shielded metal arc welding of non-alloy and fine grain
steels Classification (ISO 17632:2004, MOD)
AS/NZS ISO 17634
Welding consumables – Tubular cored electrodes for gas shielded
Metal arc welding of creep-resisting steels – Classification (ISO
17634:2004, MOD)
AS/NZS ISO 18276
Welding consumables – Tubular cored electrodes for gas shielded
And non-gas shielded metal arc welding of high-strength steel –
Classification (ISO 18726:2005, MOD)
MAIN ROADS Specifications
Specification 831
MINOR STEEL ITEMS
Specification 835
PROTECTIVE TREATMENT OF STEEL WORK
833.03 – 833.05
NOT USED
PRODUCTS AND MATERIALS
833.06
833.06.01
SPECIFICATIONS FOR STEEL
GENERAL
1.
All materials supplied by the Contractor shall be new and
shall conform to the standards specified below.
New Steel
2.
Unless otherwise specified all structural steel sections shall
be Grade 300 in accordance with AS/NZS 3679.
Standards
833.06.02
RHS RAILS AND POSTS
1.
Structural steel hollow sections shall conform to the
requirements of AS 1163 and shall be Grade 350 unless noted
otherwise on the Drawings.
833.07
RHS
TEST CERTIFICATES
1.
The Contractor shall ensure that all materials conform to the
tests required by the standards.
Certificates
2.
Test certificates showing the results of mechanical tests and
chemical analysis (where applicable) of the material used in the Works
shall be retained by the Contractor.
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Specification 833 Bridge Balustrades
Document 04/10143 Issue 3/08/12
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833.08
IDENTIFICATION RECORDS
1.
All materials used in the Works shall be identified with the
test certificates. The Contractor shall establish and maintain a
comprehensive system of identification records. Copies of all these
records shall be forwarded to the Superintendent on request.
833.09
IDENTIFICATION MARKS
1.
Each item of steelwork shall have its own item mark number
which shall be used on all related schedules and documents. This mark
shall be clearly indicated and remain recognisable after protective
treatment on all members by durable identification marks to enable
accurate identification on site. Each type of component shall be
designated with a mark which is readily distinguishable from the marks
for all other types.
833.10
ID Records
ID Marks
STORAGE
1.
All steel, whether fabricated or not, shall be stored in such a
manner that corrosion is minimised. Generally, storage at least 200mm
above the ground on platforms, slabs, or other supports and under
cover will be satisfactory. Excessively rusted or bent or damaged steel
shall be rejected by the Superintendent.
833.11 – 833.25
NOT USED
FABRICATION
833.26
GENERAL
1.
All steelwork shall be fabricated as shown on the Drawings
and in accordance with the requirements of AS 4100 except as varied
by this Specification.
2.
The Contractor shall supply, fabricate, transport and erect all
railing to the deck and approaches of the bridge as shown on the
Drawings. The railing shall be fabricated from steel sections.
833.27
SHOP DRAWINGS
1.
The Contractor shall prepare Shop Drawings to show details
of fabrication which are not explicit on the Drawings. Details required
include dimensions, angles, cambering profiles, splice locations, weld
preparation details and any CONTRACT SPECIFIC REQUIREMENTS.
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Document 04/10143 Issue 3/08/12
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2.
Four copies of the shop drawings certified by the
Contractor as complying with the above requirements shall be
submitted to the Superintendent 7 working days before fabrication
commences.
HOLD
POINT
3.
The Contractor shall be responsible for the correctness of
the shop drawings. Acceptance of the shop drawings by the
Superintendent shall not relieve the Contractor of any responsibility.
833.28
VERTICALITY OF POSTS AND BALUSTERS
1.
All balusters and posts shall be vertical as shown on the
Drawings. The Contractor's attention is drawn to the need to detail
individually angled brackets and joints to ensure that this requirement is
met.
833.29
CURVING OF RAILS
1.
Where the rails are shown on the Drawings to be curved,
they shall be curved to form that shape without excessive “springing”
forces being applied to the posts. The methods adopted for curving the
rails shall be such as not to excessively distort the section or damage
the material.
833.30
CUTTING AND EDGE TREATMENT
1.
Steelwork may be cut by flame cutting, sawing or guillotining
unless specified otherwise. Surfaces produced by such cutting shall be
finished square (unless a bevelled edge is called for) and true to the
required dimensions. Shearing by nibbling action shall not be permitted.
2.
Cut edges shall be finished as specified in AS 4100. The
edge surface preparation shall conform to the requirements specified for
galvanising.
3.
Unless shown otherwise on the Drawings, all corners on cut
edges shall be rounded to a radius of approximately 1.5mm, except
where such edges are subsequently to be welded.
833.31
SPLICES
1.
Posts shall not contain splices.
2.
The location of any splices required in the rails additional to
those shown on the Drawings shall be subject to approval by the
Superintendent.
833.32
833.32.01
BOLTING
HOLES FOR BOLTING
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Document 04/10143 Issue 3/08/12
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1.
All bolt holes shall be drilled to a diameter 2mm larger than
the diameter of the bolt unless otherwise shown on the Drawings.
2.
Reamed or drilled holes shall be cylindrical and
perpendicular to the face of the member. Reaming and drilling shall be
done by mechanical means.
833.32.02
BOLT SPECIFICATION
1.
Manufacture - Grade 4.6 bolts shall comply with AS 1111
and nuts shall comply with AS 1112. Plain washers shall comply with
AS 1237. Grade 8.8 bolts and associated nuts and washers shall
comply with AS/NZS 1252.
2.
AS 4100.
Installation – Bolt installation shall be in accordance with
833.33
WELDING
1.
All welding shall be in accordance with AS/NZS 1554.1. All
welds shall be Category SP unless otherwise shown on the Drawings.
2.
All electrodes used for manual welding shall conform to
AS/NZS 1553. Flux cored electrodes used for semi-automatic welding
shall conform to AS 2203.
3.
All weld spatter shall be removed before protective treatment
is applied.
833.34
PROTECTIVE TREATMENT
1.
Unless otherwise shown on the Drawings, all steel
components covered by this Specification shall be hot-dip galvanised in
accordance with Specification 835 PROTECTIVE TREATMENT OF
STEELWORK.
833.35 TRANSPORT, HANDLING AND STACKING
1.
The Contractor shall ensure that loading, transport,
unloading, stacking and handling operations are carried out in such a
way that all steelwork shall be protected from distortion and that
galvanised surfaces are protected from damage. The Contractor shall
store components in such a manner that the freshly galvanised surfaces
are protected from the attack of “white rust”.
833.36 – 833.40
NOT USED
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Contract xxx/xx
Specification 833 Bridge Balustrades
Document 04/10143 Issue 3/08/12
Page 8 of 13
ERECTION
833.41
GENERAL
1.
AS 4100.
Erection of steel railing shall comply with the requirements of
2.
After fabrication all weld splatter and slag shall be removed
by suitable mechanical means and all sharp edges and rough welds
rounded off.
833.42
TOLERANCES
1.
below:
The finished railing shall be erected to the tolerances set out
a) Variation from true plan positions of posts ± 5mm
b) Variation of dimensions in elevation ± 3mm
c) Variation of line of rails from specified
vertical and horizontal profile
± 5mm
2.
The final appearance of the bridge will depend very much on
the profile of the railings and therefore in addition to the above
tolerances the Contractor shall take every care to ensure that the
railings are erected to smooth curves which reflect the design profiles of
the bridge. In particular the Contractor shall ensure that a smooth
profile is maintained in the top rail after all site connections have been
completed.
833.43 – 833.80
NOT USED
AS BUILT AND HANDOVER REQUIREMENTS
833.81 – 833.90
NOT USED
CONTRACT SPECIFIC REQUIREMENTS
833.91 – 833.99
NOT USED
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Specification 833 Bridge Balustrades
Document 04/10143 Issue 3/08/12
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ANNEXURE 833A
SUPPLY OF BALUSTRADE ITEMS BY THE PRINCIPAL
Description
Number
Location
Time of Availability
(Weeks after
Commencement of
Contract)
(NOTE:
This Annexure is used in conjunction with Clause 833.91 and should be
varied as required to suit. Delete this note, and the Annexure, where not applicable)
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Document 04/10143 Issue 3/08/12
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SPECIFICATION 833 GUIDANCE NOTES
DELETE THESE GUIDANCE NOTES FROM FINAL DOCUMENT AFTER USING FOR
REFERENCE
All edits to downloaded TDP documents shall be tracked (most word processing
software allows this to be done automatically). Deletions shall be struck through e.g.
example. Insertions shall be in italics e.g. example. If all information relating to a clause
is deleted then the clause number should be retained and the words "NOT USED"
should be inserted.
The proposed documents with tracked changes shall be submitted to the Project
Manager for review, prior to printing the final batch of documents. When this final
printing is carried out, the tracked changes option is to be turned off.
The Custodian of this specification is the Structures Design and Standards Engineer.
1.
SUPPLY BY THE PRINCIPAL (Clause 833.91)
1.1
If the Principal will pre-supply balustrade items, include Clause 833.91 in the
CONTRACT SPECIFIC REQUIREMENTS and complete Annexure 833A.
1.2
Annexure 833A is provided for listing Principal supplied items. The
description should include identification with items shown on the Drawings as well as the
length and whether items are fabricated with bolt holes etc. or unfabricated. The
location will need to be worded to suit arrangements made.
1.3
If there are no Principal Supplied Items, delete Annexure 833A.
1.4
Clause 833.06 should generally be retained unless the Contract is for
erection only.
2.
REMOVAL OF EXISTING BALUSTRADE (Clause 833.92)
2.1
If the Contract includes the removal of existing balustrade, Clause 833.92
should be included in the CONTRACT SPECIFIC REQUIREMENTS.
2.2
Where necessary, this clause can be edited to include the storage site for
the removed balustrade if salvageable for re-use, or disposed to an off-site tip.
3.
SHOP DRAWINGS
3.1
Shop drawings provide an assurance that the requirement for vertical posts
and balusters and smooth profiles of rails have been interpreted correctly and
adequately detailed.
3.2
This requirement is generally necessary in urban bridges but generally not
necessary in straight rural bridges, in which case Clauses 833.27 to 833.29 may
generally be deleted and references to Australian Standards no longer relevant should
be deleted.
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Document 04/10143 Issue 3/08/12
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CONTRACT SPECIFIC REQUIREMENTS TO ADD OR DELETE
The following Clauses are to be placed under the CONTRACT SPECIFIC
REQUIREMENTS as required. Note that the Clause numbers may be varied within the
range allocated to this section to suit the requirements of the project and the remaining
“Not Used” numbers adjusted accordingly. Also the Clause number and heading style
should be altered to, “Heading 2” so that it will be included in the specification Contents
page.
833.91
SUPPLY OF MATERIAL BY THE PRINCIPAL
1.
The Principal will make available free of charge to the
Contractor steel items as listed in Annexure 833A.
2.
The Contractor shall provide for all cranage, for handling
and loading and a means of transport for the items.
Handling
3.
The Contractor shall supply all other material necessary for
completing the Works.
Associated
Materials
833.92
REMOVAL OF EXISTING BALUSTRADE
1.
The existing posts and balustrade shall be removed from the
bridge, one side at a time in conjunction with the replacement of the
overlay in such a manner as to minimise damage and allow the re-use
of the materials.
Removal
2.
The removed materials shall be transported to a storage
yard of the Principal’s nominated by the Superintendent.
Storage
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Document 04/10143 Issue 3/08/12
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SPECIFICATION AMENDMENT CHECKLIST
Specification Name: No: 833 Revision No: _____ Title:
Project Manager:
BRIDGE BALUSTRADES
Name: _______________Signature: ____________Date:______
Checked By: Name: _______________Signature: ____________Date:_______
Contract No: _____Contract Description: __________________________________
ITEM
DESCRIPTION
SIGN
OFF
All changes/amendments must be shown in Tracked Change mode until
Note:
approved.
1.
Project Manager has reviewed Specification and identified
Additions and Amendments.
2.
CONTRACT SPECIFIC REQUIREMENTS addressed? –
Contract specific materials/products/clauses added? (Refer
Specification Guidance Notes for guidance).
3.
Any unlisted Materials/Products proposed and approved by the
Project Manager? – if “Yes” provide details at 15.
4.
Standard Clauses amended? – MUST SEEK approval from
MCP.
5.
Clause deletions shown as ‘NOT USED’.
6.
Appropriate INSPECTION & TESTING parameters included in
Spec 201 (Test Methods, Minimum Testing Frequencies
verified).
7.
ANNEXURES completed (Refer Specification Guidance Notes).
8.
HANDOVER and AS BUILT requirements addressed.
9.
Main Roads QS has approved changes to SMM.
10.
Project Manager certifies completed Specification reflects intent
of the design.
11.
Completed Specification – independent verification arranged by
Project Manager
12.
Project Manager’s review completed.
13.
SPECIFICATION GUIDANCE NOTES deleted.
14.
TABLE OF CONTENTS updated.
15
Supporting information prepared and submitted to Project
Manager.
Further action necessary:
Signed:
MAIN ROADS Western Australia
Contract xxx/xx
(Project Manager)
Date: _______________
Specification 833 Bridge Balustrades
Document 04/10143 Issue 3/08/12
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