Design Standard Ds 100 Water Corporation-Books Download

DESIGN STANDARD DS 100 Water Corporation

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Design Standard DS 100 Suspended Flooring (Grid Mesh and Chequer Plate) Uncontrolled if Printed Page 9 of 52



Design Standard DS 100
Suspended Flooring Grid Mesh and Chequer Plate
The intent of Design Standards is to specify requirements that assure effective design and delivery of fit for
purpose Water Corporation infrastructure assets for best whole of life value with least risk to Corporation
service standards and safety Design standards are also intended to promote uniformity of approach by asset
designers drafters and constructors to the design construction commissioning and delivery of water
infrastructure and to the compatibility of new infrastructure with existing like infrastructure
Design Standards draw on the asset design management and field operational experience gained and
documented by the Corporation and by the water industry generally over time They are intended for
application by Corporation staff designers constructors and land developers to the planning design
construction and commissioning of Corporation infrastructure including water services provided by land
developers for takeover by the Corporation
Nothing in this Design Standard diminishes the responsibility of designers and constructors for applying the
requirements of WA OSH Regulations 1996 Division 12 Construction Industry consultation on hazards
and safety management to the delivery of Corporation assets Information on these statutory requirements
may be viewed at the following web site location
http www commerce wa gov au WorkSafe Content Industries Construction Further information National
standard for construction html
Enquiries relating to the technical content of a Design Standard should be directed to the Principal Engineer
Water Drainage Civil Standards Infrastructure Design Branch Future Design Standard changes if any
will be issued to registered Design Standard users as and when published
Manager Infrastructure Design Branch
This document is prepared without the assumption of a duty of care by the Water Corporation The document is not
intended to be nor should it be relied on as a substitute for professional engineering design expertise or any other
professional advice
It is the responsibility of the user to ensure they are using the current version of this document
Copyright Water Corporation This standard and software is copyright With the exception of use permitted by the
Copyright Act 1968 no part may be reproduced without the written permission of the Water Corporation
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Design Standard DS 100
Suspended Flooring Grid Mesh and Chequer Plate
DISCLAIMER
Water Corporation accepts no liability for any loss or damage that arises from anything in the
Standards Specifications including any loss or damage that may arise due to the errors and omissions of any person
Any person or entity which relies upon the Standards Specifications from the Water Corporation website does so
that their own risk and without any right of recourse to the Water Corporation including but not limited to using
the Standards Specification for works other than for or on behalf of the Water Corporation
The Water Corporation shall not be responsible nor liable to any person or entity for any loss or damage suffered
as a consequence of the unlawful use of or reference to the Standards Specifications including but not limited to
the use of any part of the Standards Specification without first obtaining prior express written permission from the
CEO of the Water Corporation
Any interpretation of anything in the Standards Specifications that deviates from specific Water Corporation
Project requirements must be referred to and resolved by reference to and for determination by the Water
Corporation s project manager and or designer for that particular Project
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Suspended Flooring Grid Mesh and Chequer Plate
REVISION STATUS
The revision status of this standard is shown section by section below
REVISION STATUS
SECTION VER DATE PAGES REVISION DESCRIPTION RVWD APPRVD
REV REVISED Section Clause Sub Clause
1 1 0 30 06 10 All Original First Version
1 1 14 06 13 8 10 11 12 1 1 1 2 1 1 4 5 to 1 4 24 revised and
1 4 25 added to this revision
2 1 0 30 06 10 All Original First Version
3 1 0 30 06 10 All Original First Version
1 1 14 06 13 14 15 16 18 3 3 4 3 5 1 3 6 3 6 1 3 6 2 3 8 1
20 21 revised and 3 10 added to this revision
1 2 08 06 17 15 Revised 3 b to replace reference
Appendix 1 with updated drawing
4 1 0 30 06 10 All Original First Version
1 1 14 06 13 22 23 4 1 4 1 1 4 1 3 revised
5 1 0 30 06 10 All Original First Version
1 1 14 06 13 24 5 3 revised
6 1 0 30 06 10 All Original First Version
1 1 14 06 13 26 27 6 1 6 2 revised and 6 5 6 6 6 7 added
to this revision
1 2 08 06 17 26 27 6 5 revised to remove references to
Suspended Floor Compliance Plaque
6 5a revised to refer to 3 1 6 7c revised
to include Sikaflex sealant
App 1 1 0 30 06 10 All Original First Version
1 1 14 06 13 28 Page number changed
App 2 1 0 30 06 10 All Original First Version
App 3 1 0 30 06 10 All Original First Version
1 1 14 06 13 37 39 Rearranged and revised
1 2 08 06 17 37 39 Removed Suspended Floor
Compliance Plaque Rating table and
references revised load rating plaque
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Suspended Flooring Grid Mesh and Chequer Plate
REVISION STATUS
SECTION VER DATE PAGES REVISION DESCRIPTION RVWD APPRVD
REV REVISED Section Clause Sub Clause
App 4 1 0 30 06 10 All Original First Version
1 1 14 06 13 40 41 Rearranged and revised
App 5 1 0 30 06 10 All Original First Version
1 1 14 06 13 43 44 Rearranged and revised
08 06 17 45 Compliance plaque reference removed
from design checklist
App 6 1 1 14 06 13 All 46 55 Added to this version
1 2 08 06 17 49 54 56 Revised to add missing drawings from
list of drawings updated with amended
drawing KE97 91 3
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Design Standard DS 100
Suspended Flooring Grid Mesh and Chequer Plate
DESIGN STANDARD DS 100
Suspended Flooring
Grid Mesh and Chequer Plate
Section Page
1 SCOPE AND GENERAL 9
1 1 Scope 9
1 2 References 9
1 2 1 Water Corporation Standards and Specifications 9
1 2 2 Australian Standards 9
1 2 3 Regulations and Codes of Practice 10
1 3 Guidance Information 10
1 4 Definitions 10
1 4 1 Aperture 10
1 4 2 Banding 10
1 4 3 Cross rod 11
1 4 4 Cut Out 11
1 4 5 Section of flooring that has been cut out from panel outer edges to allow 11
1 4 6 Edge Protection 11
1 4 7 Fixed 11
1 4 8 Fixing 11
1 4 9 Flat Expanded Metal Mesh 11
1 4 10 Floor 11
1 4 11 Grid Mesh 11
1 4 12 Knuckle 11
1 4 13 Load Bar 11
1 4 14 Long Way Mesh LWM 11
1 4 15 Opening 11
1 4 16 Panel 11
1 4 17 Pitch 12
1 4 18 Platform 12
1 4 19 Raised Expanded Metal Mesh 12
1 4 20 Short Way Mesh SWM 12
1 4 21 Strand 12
1 4 22 Structure 12
1 4 23 Support 12
1 4 24 Walkway 12
1 4 25 Work Area 12
1 4 26 Engineering Design Process 12
1 5 Risk Management 12
1 6 Standard Details and Example Drawings 12
2 ASSET OPERATION REQUIREMENTS 14
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Design Standard DS 100
Suspended Flooring Grid Mesh and Chequer Plate
3 DESIGN REQUIREMENTS 15
3 1 Structural Design 15
3 2 Design Philosophy 15
3 3 Permissible Deflections 16
3 4 Flooring Material Selection 16
3 4 1 Durability 16
3 5 Panels 17
3 5 1 Aperture 17
3 5 2 Size and Shape 17
3 6 Flooring Structure 19
3 6 1 Bearing Support for Flooring 19
3 6 2 Overhang 19
3 7 Openings Cut outs and gaps 20
3 7 1 Openings 20
3 7 2 Cut outs 21
3 7 3 Gaps 21
3 8 Banding 21
3 8 1 Grid mesh 21
3 8 2 Raised expanded metal mesh 21
3 8 3 Chequer Plate 21
3 9 Top Surface 21
3 10 Edge Protection 22
4 FIXING REQUIREMENTS 23
4 1 Types of Fixing 23
4 1 1 Grid mesh 23
4 1 2 Raised Expanded Metal Mesh 24
4 1 3 Chequer Plate 24
5 WORKMANSHIP 25
5 1 General 25
5 2 Fabrication Modification and Repair 25
5 2 1 Grid Mesh 25
5 3 Drawings 25
5 3 1 General Information 25
5 3 2 Panel Information 26
6 INSTALLATION 27
6 1 Grid Mesh 27
6 2 Raised Expanded Metal Mesh 27
6 3 Chequer Plate 27
6 4 Finish 27
6 5 Plaques 27
6 6 Welding 27
6 7 Galvanising 28
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Suspended Flooring Grid Mesh and Chequer Plate
APPENDIX 1 DEFINITION DIAGRAMS 29
APPENDIX 2 FLOORING AND FIXING MATERIAL SELECTION TABLES 30
APPENDIX 3 LOAD RATING PLAQUE 34
APPENDIX 4 APPENDIX 4 EDGE PROTECTION 35
APPENDIX 5 DESIGN CHECK LIST 38
APPENDIX 6 STANDARD AND EXAMPLE DRAWINGS 41
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Design Standard DS 100
Suspended Flooring Grid Mesh and Chequer Plate
1 SCOPE AND GENERAL
This Design Standard sets out Water Corporation requirements for design and installation of
suspended grid mesh and chequer plate flooring for safe working at places normally used by operating
inspection maintenance and servicing personnel including places having controlled access to public
with foot traffic equipment and vehicular loads limited to loads permitted in AS1170 0 as well as
ladders and stair treads It also sets out requirements for the selection of flooring materials
This Standard does not address flooring or stair treads made from materials other than those listed as
permissible in the Standard reinforced concrete for example It does not address requirements for
mobile equipment mobile platforms neither for example nor for associated support systems that
may have suspended flooring components but do not form part of fixed Corporation water
infrastructure assets
1 2 References
The following documents are indispensable for the application of the Standard
1 2 1 Water Corporation Standards and Specifications
DS 30 02 General Design Criteria Mechanical
DS 80 WCX CAD Standard
S151 Prevention of Falls Standard
WS 1 Metal Arc Welding
DS95 Standard for the Selection Preparation Application Inspection and Testing
of Protective Coatings on Water Corporation Assets
1 2 2 Australian Standards
1657 Fixed platforms walkways stairways and ladders Design construction and installation
1664 Aluminium structures Limit state design
1734 Aluminium and aluminium alloys Flat sheet coiled sheet and plate
3600 Concrete structures
3661 Slip resistance of pedestrian surfaces Guide to the reduction of slip hazards
3700 Masonry structures
4100 Steel structures
4360 Risk Management Guidelines
4680 Hot dip galvanised coatings on fabricated ferrous articles
1170 Structural Design Actions
3678 Structural steel Hot rolled plates floor plates and slabs
3679 1 Structural steel Part 1 Hot rolled bars and sections
3679 2 Structural steel Part 2 Welded I sections
4586 Slip resistance classification of new pedestrian surface materials
A240 Standard Specification for Heat Resisting Chromium and Chromium Nickel Stainless
Steel Plate Sheet and Strip for Pressure Vessels
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B209 Standard Specification for Aluminium and Aluminium Alloy Sheet and Plate
B221 Standard Specification for Aluminium and Aluminium Alloy Extruded Bars Rods Wire
Profiles and Tubes
D635 Standard Test Method for Rate of Burning and or Extent and Time of Burning of Plastics
in a Horizontal Position
D732 Standard Test Method for Shear Strength of Plastics by Punch Tool
E84 Standard Test Method for Surface Burning Characteristics of Building Materials
1 2 3 Regulations and Codes of Practice
Commission for Occupational Safety and Health
Prevention of falls at workplaces Code of practice
Safe design of buildings and structures Code
Worksafe WA Occupational Safety and Health Regulations 1996
Regulation 3 56 Grid mesh and checker plate flooring panels
1 3 Guidance Information
Supplementary background information on flooring and stair tread design product selection and
installation practices may be referenced in the following documents Wherever this information
conflicts with anything in this Standard the requirements of the Standard shall prevail
AS HB 197 An introductory guide to the slip resistance of pedestrian surface materials
British Standards BS
4592 0 Industrial type flooring and stair treads Common design requirements and
recommendations for installations
4592 1 Industrial type flooring and stair treads Metal open bar gratings Specifications
4592 2 Industrial type flooring and stair treads Expanded metal sections Specifications
4592 4 Industrial type flooring and stair treads Glass reinforced plastic GRP open bar
gratings Specifications
4592 6 Industrial type flooring and stair treads Glass reinforced plastic GRP moulded
open mesh gratings Specifications
ANSI NAMM National Association of Architectural Metal Manufacturers
MBG 532 00 Heavy Duty Metal Bar Grating
1 4 Definitions
The following definitions shall apply to the application of this Standard Details of selected
definitions are illustrated in Appendix 1
1 4 1 Aperture
An opening in mesh flooring material defined by the boundary of the load bars and cross rods steel
and pultruded fibre reinforced grid mesh and by the load bars moulded fibre reinforced grid mesh or
the strands and knuckles raised expanded metal mesh
1 4 2 Banding
A banding bar that is welded or in the case of FRP grid mesh bonded to the load bars
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Suspended Flooring Grid Mesh and Chequer Plate
1 4 3 Cross rod
Twisted rod forged across the top of and at right angles to the load bars of steel grid mesh
1 4 4 Cut Out
1 4 5 Section of flooring that has been cut out from panel outer edges to allow
positioning of panels to avoid interference with structural members and equipment or
penetration of a service or equipment item
1 4 6 Edge Protection
Edge protection often referred to as a guard rail system including toe board is used to reduce the risk
of a person falling from one level to another
1 4 7 Fixed
The state of an asset component that is mechanically attached to an asset support structure or to an
adjoining fixed components in such a way as to prevent its ready removal or displacement as a result
of incidental or routine asset operation repair and maintenance operations
1 4 8 Fixing
A weld clip disc stud bolt or other component applied in order to mechanically attach a panel to an
associated asset support structure or to adjoining fixed components
1 4 9 Flat Expanded Metal Mesh
Mesh formed by passing raised expanded metal mesh through a rolling mill
1 4 10 Floor
The uppermost or surface element of a platform walkway or landing that is exposed to pedestrian
equipment or vehicular traffic
1 4 11 Grid Mesh
Grid mesh panels that consist of load bars and cross rods made from mild steel galvanised mild steel
stainless steel aluminium or fibre reinforced plastic FRP or load bars in both directions made from
FRP which form a square or rectangular mesh pattern in plan
1 4 12 Knuckle
An area of raised expanded metal mesh where strands of mesh interconnect
1 4 13 Load Bar
A flat bar oriented in the vertical plane which provides grid mesh with its primary load bearing
structural properties and strength
1 4 14 Long Way Mesh LWM
The long aperture dimension between raised expanded metal mesh knuckles
1 4 15 Opening
An unprotected void in a flooring panel that results when a removable or hinged section of floor
designed to provide access to equipment is opened
1 4 16 Panel
A sheet of flooring which has been cut to specific standardised or nominated dimensions
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1 4 17 Pitch
The centre to centre or edge to edge spacing between grid mesh load bars
1 4 18 Platform
An area of flooring intended to provide access to elevated parts of fixed infrastructure assets for the
purposes of infrastructure operation and maintenance
1 4 19 Raised Expanded Metal Mesh
Mesh formed by slitting and stretching a flat metal plate in a single continuous process
1 4 20 Short Way Mesh SWM
The short aperture dimension between the knuckles of raised expanded metal mesh
1 4 21 Strand
Slit section of plate of expanded metal mesh fixed that forms the primary boundary of the mesh
opening aperture
1 4 22 Structure
A designed assembly of load bearing members and associated load bearing components which support
panels and to which panels are fixed
1 4 23 Support
An individual component member of a structure that supports flooring
1 4 24 Walkway
A level or sloping area of that adjoins floors at the same or different levels flooring passageway A
walkway structure may be at one level or stepped with landing platforms at multiple levels
1 4 25 Work Area
An infrastructure asset site area which is likely to require access by operational and maintenance
workers at least once weekly except as otherwise determined by the Operational Representative
1 4 26 Engineering Design Process
The Corporation s Engineering Design Process Manual of Requirements and associated documents
that define and detail the processes which shall apply to Corporation infrastructure asset designs
1 5 Risk Management
The Water Corporation s Risk Management Process PCY135 Risk Management Risk Management
Guidelines and the Corporate Risk assessment Criteria shall be applied to assess whole of business
risks arising from flooring configurations that are not specifically addressed by this Standard
1 6 Standard Details and Example Drawings
The standard details and example drawings that form part of this standard are included in Appendix 6
The standard details contain information which is complementary to that contained in the text and
shall therefore be read in conjunction with the corresponding parts of the standard
The example drawings provide details of information to be included on the design fabrication
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Designer and Contract Superintendent shall ensure that they have the latest issue of the drawings
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2 ASSET OPERATION REQUIREMENTS
Designers shall consider the functional and operational needs of an infrastructure asset to ensure that
its flooring components remain fit for purpose over the expected life of the asset The operational and
maintenance requirements of flooring shall be determined in consultation with the Corporation s
Design Operational and Maintenance Representatives The flooring components shall be designed to
maintain asset functional and operational needs over the required asset life The following
environmental usage physical and maintenance requirements shall be established and addressed as
part of flooring design
a Geographical location to determine the relevance of AS NZS 1170 2 AS NZS 1170 3
b Design life of the system as required by the Corporation
c Public and private i e Corporation employees or alliance sub contractors access
d The exposure of flooring to various environments e g chemicals water retention ponding
condensation high temperatures temperature variations and sunlight and fabrication processes
e Service deflection and upper surface slip resistance requirements
f Asset utilization and flooring exposure to imposed pedestrian and vehicular traffic point and
distributed loads arising from personnel and equipment movements during planned and
unplanned operational and maintenance activities
g Provision for openings in flooring for the purposes of access and service operations
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3 DESIGN REQUIREMENTS
Designers shall provide the appropriate design outputs as required by the Engineering Design Process
and the following
a A certificate of design conformance with the Worksafe Code of Practice for the Safe Design of
Buildings and Structures 2008
b A drawing that shows typical load Rating Plaque detail and format for application to the
individual platform rating plaques to be shown together with installation positioning details on
the design drawings in accordance with Drawing KE97 91 3 Completed Design Check list
included in Appendix 5 duly completed and signed by the Designer or Structural engineer
nominated by the Water Corporation
3 1 Structural Design
The design of platforms walkways stairways ladders handrails and of associated structures supports
and fixings shall comply with the requirements of AS NZS 1170 AS1657 AS4100 AS1664 AS3600
AS3700 and Water Corporation Design Standards and Specifications as appropriate
Flooring structures shall be designed for dead load permanent action plus imposed live load action
a General non public access as defined in AS1657 not less than 2 5kPa uniformly distributed or
1 1kN concentrated load whichever produces the greater stress or deflection
b The requirements of Table 3 1 and Table B1 of AS NZS 1170 1 where the floor is likely to be
loaded in excess of the stipulation in a above
c The guidance provided by Section C3 1 of AS NZS 1170 1 Supp 1 2002 for public access and
heavy frequent traffic demands where the loads are not known and where the type of
occupancy is not covered in Table 3 1 and Table B1 of AS NZS 1170 1
Wherever a platform may be exposed to mobile plant or equipment the plant or equipment shall be
considered fixed for the purposes of dead load calculation The calculated concentrated load shall be
assumed to apply through a 100mm x 100mm loading area
3 2 Design Philosophy
Flooring designers shall consider the requirements of DS 100 and manufacturer supplied information
The requirements of DS 100 and nominated Corporation Standards shall prevail wherever there may
be in conflict with manufacturer supplied information proprietary flooring load deflection data and
with other standards Designers shall design panels on a simple support basis to safely support
a Loads and deflections at the locations of maximum stress and deflection within the panels
b Impact and vibration loads transmitted by equipment including reciprocating or rotating
equipment that may be in contact with or supported by the flooring
c Significant extraordinary e g plant and equipment loads imposed in addition to pedestrian
loads irrespective of loading frequency except where it is determined by means of an
operability risk assessment involving the Corporation as asset owner that the loading risk is
acceptably low or that the possibility of imposed loading has been eliminated
Flooring panel deflections that may arise due to extraordinary albeit infrequent imposed loads shall not
exceed the specified permissible deflection values except where it may be shown by means of an
operability risk assessment involving the Corporation as asset owner that higher service deflections
are unlikely to cause slip trip or fall hazards
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