SPECIFICATION 831
MINOR STEEL ITEMS
Copyright MAIN ROADS Western Australia
Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
REVISION REGISTER
Clause
Number
Description of Revision
Authorised
By
Issue Date
Whole document
Reformatted
SCO
04/05/2017
831.02
831.06
831.07
References to Standards
Minimum thickness of steel
Corrosion protection
SDSE
01/09/2015
831.02
References - amendments to Standards title
AS/NZS 1553.1
SDSE
23/09/2008
831.01
Reference to “sockets for balustrades and traffic
barriers” deleted
SDSE
21/12/2006
Whole document
Complete revision of Issue 1.2 to new format
MCP
01/08/2006
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
CONTENTS
Clause
Page No
GENERAL ...................................................................................................................................... 4
831.01
Scope......................................................................................................................... 4
831.02
References................................................................................................................. 4
831.03 – 831.05 NOT USED..................................................................................................... 5
PRODUCTS AND MATERIALS ..................................................................................................... 5
831.06
Structural Steel for Plates, Bars and Sections ............................................................ 5
831.07
Bolts, Nuts, Screws and Washers .............................................................................. 5
831.08
Testing and Identification of Material .......................................................................... 7
831.09
Damaged Steel .......................................................................................................... 7
831.10
Storage of Materials ................................................................................................... 7
831.11
Assembly Procedures ................................................................................................ 7
831.12
Acceptance of Prototype Components ....................................................................... 8
831.13
Identification Marks .................................................................................................... 8
831.14 – 831.25 NOT USED..................................................................................................... 8
FABRICATION ............................................................................................................................... 8
831.26
Cutting and Edge Treatment ...................................................................................... 8
831.27
Splices ....................................................................................................................... 9
831.28
Holes for Bolting ......................................................................................................... 9
831.29
Welding ...................................................................................................................... 9
831.30
Stud Shear Connectors ............................................................................................ 10
831.31
Certification of Fabrication........................................................................................ 10
831.32
Protective Treatment ................................................................................................ 10
831.33
Transport, Handling and Storage ............................................................................. 11
831.34 – 831.80 NOT USED................................................................................................... 11
AS BUILT AND HANDOVER REQUIREMENTS .......................................................................... 11
831.81 – 831.90 NOT USED................................................................................................... 11
CONTRACT SPECIFIC REQUIREMENTS ................................................................................... 11
831.91 – 831.99 NOT USED................................................................................................... 11
ANNEXURE 831A ........................................................................................................................ 12
Supply of Minor Steel Items by the Principal.............................................................................. 12
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
SPECIFICATION 831
MINOR STEEL ITEMS
GENERAL
831.01
SCOPE
1. The work under this specification consists of the supply, fabrication,
protective treatment and delivery of steel expansion joint protection angles
and other minor steel items including dowels, bolts, nuts, screws and
washers.
831.02
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 1110 ISO Metric Hexagon Bolts and Screws - Product
Grades A and B
AS 1111
ISO Metric Hexagon Bolts and Screws - Product
Grades C
AS 1112
ISO Metric Hexagon Nuts - Including Thin Nuts, Slotted
Nuts and Castle Nuts
AS 1214
Hot-dip Galvanised Coatings on Threaded Fasteners
(ISO Metric Coarse Thread Series)
AS 1237
Plain Washers for Metric Bolts, Screws and Nuts for
General Engineering Purposes
AS 1275
Metric Screw Threads for Fasteners
AS 1420
ISO Metric Hexagon Socket Head Cap Screws
AS 1789
Electroplated Zinc (Electrogalvanised) Coatings on
Ferrous Articles (Batch Process)
AS 1897
Electroplated Coatings on Threaded Components (Metric
Coarse Series)
AS 2837
Wrought Alloy Steels - Stainless Steel Bars and Semifinished Products
AS 4100
Steel Structures
Australian/ New Zealand Standards
AS/NZS 1163
Cold-formed Structural Steel Hollow Sections
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
AS/NZS 1252
High Strength Steel 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, Floor plates
and Slabs
AS/NZS 3679.1
Structural Steel - Hot Rolled Bars and Sections
ISO Standards
ISO 3506 Mechanical Properties of Corrosion-Resistant Stainless
Steel Fasteners
Sweden Standards
SS 2343 Mechanical Properties of Corrosion-Resistant Stainless
Steel Fasteners
MAIN ROADS Specifications
Specification 835 PROTECTIVE TREATMENT OF STEEL WORK
831.03 – 831.05
NOT USED
PRODUCTS AND MATERIALS
831.06
STRUCTURAL STEEL FOR PLATES, BARS AND SECTIONS
1. Structural steel for plates, bars and sections shall conform to the
requirements of AS/NZS 3678, Grade 300, and AS/NZS 3679.1 grade 300
unless noted otherwise on the Drawings or the Specification.
2. Structural steel hollow sections shall conform to the requirements of
AS/NZS 1163. Unless noted otherwise on the drawings, sections with a
nominal thickness less than 6mm shall be Grade 350 and sections with a
nominal thickness equal to or greater than 6mm shall be Grade 350L0.
831.07
BOLTS, NUTS, SCREWS AND WASHERS
1. All bolts, nuts, screws and washers shall conform with the relevant
Australian Standards listed in Clause 831.02.
2. High strength bolts, with associated nuts and washers, shall be
manufactured in accordance with AS/NZS 1252 and installed in accordance
with AS 4100. The length of the bolt shall be as shown on the Drawings, or,
if no length is shown, shall be in accordance with AS 4100.
3. All screw threads shall conform to the ISO coarse pitch series thread in
accordance with AS 1275.
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
4. Before the application of corrosion protection, tolerance of screw threads:
a. for bolts conforming to AS/NZS 1252 shall be
Class 6g, and
b. for bolts conforming to AS 1111.1 shall be
Class 8g.
5. Before the application of corrosion protection, tolerances of nut threads for:
a. nuts conforming to AS/NZS 1252 shall be
Class 6H, and
b. nuts conforming to AS 1111.1 shall be
Class 8H
6. The galvanising of fasteners is to be in accordance with AS 1214. After
galvanising, the galvanised nuts shall be tapped oversize in accordance
with AS1214.
7. Unless shown otherwise on the Drawings, nuts other than those for high
strength bolts shall be "normal" size. The strength grade of normal nuts to
be associated with each strength grade of the bolt, U-bolt, screw, stud or
other threaded component shall be as follows:
Grade of bolt, U-bolt etc.
Strength Grade of Nut
4.6
5
5.8
5
8.8
8
10.9
10
8. The strength grade required for grades A and B (precision) bolts and screws
shall be as shown on the Drawings.
9. Unless shown otherwise on the Drawings, the stainless steel used in the
manufacture of non-high strength bolts, nuts and dowels shall conform to
ISO 3506 Grade 316L for welded components or Grade 316 for non-welded
components. Unless shown otherwise on the Drawings, the stainless steel
used in the manufacture of high strength bolts and nuts shall conform to
American Iron and Steel Institute Grade 316 Mo+ and have a minimum
ultimate tensile strength of 800MPa.
10. Prevailing torque locknuts, also known as "self-locking nuts", shall be the
insert type having a nylon or similar plastic insert, such as "Nyloc" nuts or
similar approved by the Superintendent. Those used with commercial
grade bolts or U-bolts shall strength grade 6 or higher.
11. Unless shown otherwise on the Drawings the following types of washers
shall be used:a. With precision bolts - bright metal washers, normal series
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
b. With commercial bolts - black metal washers, normal series
c. With stainless steel bolts - stainless steel washers Grade 316,
normal series.
12. Washers are generally not required under socket head cap screws.
13. The Contractor shall obtain a Certificate from a laboratory with appropriate
NATA registration stating that the bolts, nuts, screws and washers comply
with the appropriate standard.
831.08
TESTING AND IDENTIFICATION OF MATERIAL
1. The Contractor shall ensure that all materials or parts conform with the tests
required by the standards and with other tests specified in this Part of the
Specification.
2. Test certificates showing the results of mechanical tests and chemical
analysis (where applicable) of the material or parts used in the Works shall
be retained by the Contractor.
3. All materials or parts used in the Works shall be identified with the tests.
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.
831.09
DAMAGED STEEL
1. Steel which is bent (except as required for fabrication), damaged or
excessively rusted shall not be used in the Works.
831.10
STORAGE OF MATERIALS
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 under cover will be
satisfactory.
2. Bolts, nuts, screws and washers not promptly incorporated in the work shall
be stored in a waterproof shelter clear of the ground, and protected from
damage.
831.11
ASSEMBLY PROCEDURES
1. Details of the procedures for assembly and fabrication shall be submitted
with the Contractor's Quality Plan. These procedures shall be
comprehensive and shall cover all aspects of the work. The procedures
shall include, but not be limited to:-
Quality Plan
a. Assembly procedures, including dimensional control and details of
manufacturing jigs
b. Welding procedures
c. Qualification of welds, including stud welding
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
d. Qualification and identification of welders
e. Qualification of welding supervisors
f.
System of identification of welders with work
g. Quality control measures
h. Quality control check lists and forms
i.
System for identification of components
j.
Procedures for trial assembly
k. Procedures for repair of non-conforming materials, components and
assemblies
l.
Procedures for transport, handling and storage, including measures
to prevent distortion and damage to the steelwork and its protective
coating
m. Procedure for curving
2. At least one week prior to commencing fabrication, the Contractor
shall submit a programme to the Superintendent showing the
proposed sequence of operations.
831.12
ACCEPTANCE OF PROTOTYPE COMPONENTS
1. The Contractor shall give 5 working days' notice in writing before
commencing work, and this shall be allowed for in the programme.
For the first item of any component fabricated the Contractor shall
make a thorough dimensional check. The Contractor shall submit to
the Superintendent details of this dimensional check, and certification
that the dimensions are in conformity with the requirement of the
Drawings and the Specification. No further fabrication work on similar
items shall be carried out until submission of this certification.
831.13
HOLD POINT
HOLD POINT
IDENTIFICATION MARKS
1. Each component shall be metal stamped with an identification mark which
remains recognisable after protective treatment, but which is located in a
hidden or inconspicuous position after erection. Each type of component
shall be designated with a mark which is readily distinguishable from the
marks for all other types.
831.14 – 831.25
Identification
NOT USED
FABRICATION
831.26
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.
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
2. Cut edges shall be finished as specified in AS 4100. Guillotined plates shall
be cut to an oversize sufficient for the correct dimensions to be achieved
after edge finishing. Where galvanising is specified the edge surface
preparation shall conform to the requirements specified in this Part of the
Specification.
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. Rolled edges need not be rounded provided
the corners have a similar radius.
831.27
SPLICES
1. Except where shown on the Drawing, splices shall not be permitted.
831.28
HOLES FOR BOLTING
1. The diameters of the bolt holes shall be 2mm greater than the diameters of
the bolts shown on the Drawings unless otherwise specified.
2. Holes may be either drilled full-size or reamed to full-size after sub-drilling or
sub-punching. In all cases, sub-drilling may be substituted for subpunching, and holes may be drilled from the solid metal instead of being
sub-punched or sub-drilled and reamed, provided such drilling is done with
the material assembled in the same manner as is required for reamed work.
3. Sub-punched and sub-drilled holes shall be smaller in diameter than the
nominal diameter of bolts by 3mm.
4. For sub-punched holes the diameter of the die shall not exceed the
diameter of the punch by more than 1mm. Holes shall be clean cut, without
torn or ragged edges. Reamed or drilled holes shall be cylindrical and
perpendicular to the face of the member. Reaming and drilling shall be
done by mechanical means.
5. Connecting parts shall be assembled and held securely while being reamed
or drilled and shall be match-marked before separating the parts. Burrs on
the outside surfaces shall be removed.
6. Holes for field connections may be sub-punched or sub-drilled and reamed
or drilled from the solid to a hardened steel template not less than 25mm
thick, and all corresponding holes in the members to which they connect
shall be reamed or drilled to the same template. Alternatively these
connections may be reamed or drilled with the members assembled.
831.29
WELDING
1. All welding shall conform to AS/NZS 1554.1 or AS/NZS 1554.2 as
applicable, unless otherwise specified.
2. Weld quality shall be as nominated on the Drawings. All weld spatter, shall
be removed before protective treatment is applied.
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
831.30
STUD SHEAR CONNECTORS
1. Stud shear connectors and stud welding shall comply with the requirements
of AS/NZS 1554.2 except as varied by this Specification.
2. Operators shall be qualified in accordance with Section 4.3 of
AS/NZS 1554.2.
Operator
Qualifications
3. Any stud welds not meeting the requirements of AS/NZS 1554.2 shall be
rejected. Repairs to defective welds, except where allowed for in
AS/NZS 1554.2, shall not be allowed.
831.31
CERTIFICATION OF FABRICATION
1. Prior to dispatch of work from the fabrication shop, the Contractor shall
provide the Superintendent with certification that each item fabricated
conforms to the requirements of the Drawings and the Specification.
831.32
HOLD POINT
PROTECTIVE TREATMENT
831.32.01 GENERAL
1. All minor items of steelwork shall be hot dip galvanised unless otherwise
specified.
Galvanise
2. All protective treatment including hot dip galvanising shall be in accordance
with Specification 835 PROTECTIVE TREATMENT OF STEEL WORK
unless otherwise specified.
831.32.02 PROTECTIVE TREATMENT FOR BOLTS, NUTS, ETC.
1. Stainless steel items do not require protective treatment.
2. Unless shown otherwise on the Drawings, all other bolts, U-bolts, screws,
nuts and washers shall be protected with the following protective
treatment:-
Item to be Protected
Protective Treatment
High strength bolts and associated
nuts and washers, and Commercial
bolts, screws and U-bolts and
associated nuts and washers
Hot-dip galvanised in accordance with
AS 1214
Precision bolts and screws and
associated nuts and washers &
Prevailing torque locknuts
Electroplated with zinc in conformity with the
principles of AS 1897, or for sizes over M16,
of AS 1789 - Classification Fe/Zn 12c
Type C
Socket head cap screws
Blue-black or chemical black finish plus a
residual coating of light oil. Prior to placing
into position in the bridge, socket head cap
screws shall be de-greased and coated with
approved zinc rich epoxy based primer.
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
831.33
TRANSPORT, HANDLING AND STORAGE
1. The Contractor shall ensure that loading, transport, unloading, stacking and
handling operations are carried out in such a way that the items are
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".
831.34 – 831.80
NOT USED
AS BUILT AND HANDOVER REQUIREMENTS
831.81 – 831.90
NOT USED
CONTRACT SPECIFIC REQUIREMENTS
831.91 – 831.99
NOT USED
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
ANNEXURE 831A
SUPPLY OF MINOR STEEL ITEMS BY THE PRINCIPAL
Description
Number
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
Location
Time of Availability
(Weeks after
Commencement of
Contract)
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
GUIDANCE NOTES
FOR REFERENCE ONLY – DELETE GUIDANCE NOTES FROM FINAL DOCUMENT
1. All edits to downloaded Specifications shall be made using Track Changes, to clearly show
added/deleted text.
2. If all information relating to a clause is deleted, the clause number should be retained and the
words “NOT USED” should be inserted.
3. 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.
4. Before printing accept all changes in the document, turn off Track Changes and refresh the
Table of Contents.
5. The Custodian of this specification is the Structures Design and Standards Engineer.
1.
SUPPLY BY THE PRINCIPAL (Clause 831.91)
1.1
If the Principal will pre-supply steel, include Clause 831.91 and complete Annexure 831A.
1.2
Annexure 831A is provided for listing Principal supplied items. The description should
include identification with items shown on the Drawings, and the location for pick-up of
items.
1.3
If not applicable, delete Annexure 831A.
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
CONTRACT SPECIFIC REQUIREMENTS
The following clauses are to be placed under the CONTRACT SPECIFIC REQUIREMENTS, as
required. After inserting the clause, change the clause number and heading to style “H2 SP” so it
appears in the Table of Contents.
831.91
SUPPLY OF ITEMS BY THE PRINCIPAL
1. The Principal will make available free of charge to the Contractor steel items
as listed in Annexure 831A.
2. The Contractor shall provide for all cranage, for handling and loading and a
means of transport for these items.
Handling
3. The Contractor shall supply all other material necessary for completing the
Works.
Associated
Materials
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
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Specification 831 Minor Steel Items – 04/10142 Issued 04/05/2017
AMENDMENT CHECKLIST
Specification No. 831
Title: MINOR STEEL ITEMS
Revision No:
Project Manager:
Signature:
Date:
Checked by:
Signature:
Date:
Contract No:
Contract Description:
ITEM
DESCRIPTION
SIGN OFF
Note: All changes/amendments must be shown in Tracked Changes mode until 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 16.
4.
Standard clauses amended? MUST SEEK approval from Manager
Commercial.
5.
Clause deletes shows as “NOT USED”.
6.
Appropriate INSPECTION AND TESTING parameters included in Spec 201
(Text 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.
FOOTER updated with Document No., Contract No. and Contract Name.
16.
Supporting information prepared and submitted to Project Manager.
Further action necessary:
Signed:
Document No: DXX#XXXX
Contract No: XXX/XX [Contract Name]
(Project Manager)
Date:
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