Upload
alhad-panwalkar
View
256
Download
3
Embed Size (px)
Citation preview
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
1/33
Thiess John HollandJoint Venture
Airport Link | NorthernBusway | EWAG
Global - Supplementary
Specification - Tunnel -Waterproofing andDrainage GLTSP107
Document refBC-PBA-GLTSP107-SPC-0001-0-0220 January 2010
AFC RE-ISSUE
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
2/33
Thiess John HollandJoint Venture
Airport Link | NorthernBusway | EWAG
Global - Supplementary
Specification - Tunnel -Waterproofing andDrainage GLTSP107
January 2010
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
3/33
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
4/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Contents
Page
1 General 1
1.1 Scope 1
1.2 Waterproofing Requirements and Methods 2
1.3 Definition of Terms 3
1.4 Standards and Related Specifications 4
1.5
Discrepancy Between Drawings and Specification 6
2 Quality System Requirements 7
2.1 General 7
2.2 Hold Points, Witness Points and Milestones 7
2.3 Work Method Statements 9
3
Waterproof Membranes 9
3.1 General 9
3.2 Preformed Polymer Membranes 11
3.3 Installation of Preformed Polymer Membrane (PPM) 15
3.4 Spray-on Membranes 17
3.5 Submissions 19
4
Ancillary Items 19
4.1 Waterstops 19
4.2 Penetrations / Proprietary Membrane Fixing 19
4.3 Submission Requirements 20
4.4 Re-injectable Tubes 20
4.5
Bentonite Bands 20
5 Geotextiles and Drainage Materials 20
5.1 Geotextiles 20
5.2 Drainage Materials 21
6 Concrete 22
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
5/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Table 10 Geotextile Fleece for use with PPM Properties
Appendices
Appendix A
Verification Records
Appendix B
Response to Comments
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
6/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
1 General
This technical specification has been provided by Parsons Brinckerhoff Arup Joint Ventureon behalf of Thiess John Holland Joint Venture for use in execution of the Design and
Construct Contract with the Airport Link, Northern Busway and ARU project (the Project).
1.1 Scope
This specification covers the waterproofing and drainage requirements for drained and
undrained tunnels.
The tunnels covered by this Specification include:
Mined (or Driven), including mainline tunnels, caverns, cross passages, ramps,
substations, low point sumps and shafts.
TBM connections to cut and cover structures
Cross passages and junctions with mined tunnels and TBM tunnels
Substations and Sumps
The extent of drained and undrained tunnels is in accordance with the Concept Design
1.1.1 Exclusions
The gaskets that seal between TBM segments are covered in Global Supplementary
Specification Tunnel Segmental Lining (reference BC-PBA-GLTSP110-SPC-0001).
1.1.2 Drained Tunnels
Mined cast-insitu concrete lined drained tunnels are to be provided at the following
locations:
Northbound and Southbound mainlines;
Bowen Hills cavern (at southbound tunnel off ramp)
Southbound off ramp
Lutwyche caverns (at northbound mainline tunnel off ramp and southbound
mainline tunnel on ramp)
Kedron northbound and southbound caverns (at entry and exit from TBM tunnels
with westbound off ramp and eastbound on ramp);
Mined tunnel cross-passages
Substations
Sumps
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
7/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
1.2 Waterproofing Requirements and Methods
1.2.1 GeneralThe tunnel waterproofing systems shall be installed in accordance with:
the Design Drawings
the Specification for Tunnelling, British Tunnelling Society and Institution of Civil
Engineers, June 2000 or
equivalent international standard and installed in accordance with the manufacturers
specifications
1.2.2 Project Deed Requirements
The project Deed requires that:
Any groundwater seepage into the completed tunnels and associated Project Works
shall not be visible and no water shall be permitted to drip or flow onto or over road
pavements, walkways, egress passages and plant and equipment rooms.
Permanent waterproofing treatments shall ensure that any water present on internal
surfaces of the tunnels does not affect the safety, durability and function of the tunnels.
where leakage exceeds the limits specified by the Project Deed, the leakage shall be
reduced to those specified limits
1.2.3 Drained Tunnels
The waterproofing system for the drained tunnels shall include:
a waterproof membrane installed over the crown to shoulder level or down to the tunnel
formation level
a lower wall drain of membrane (or approved drainage medium) from the tunnel arch to
the longitudinal invert perimeter drain
a geotextile drainage fleece layer installed between the ground and membrane over the
crown and the lower wall drain
the waterproof membrane type shall have a proven history and reputation for
satisfactory performance in tunnels with similar groundwater conditions
a waterproof membrane and geotextile that is self extinguishing to minimum class E or
B2 (EN ISO 1925-2 / EN 13501-1 or DIN 4102)
evidence obtained from the manufacturer that no components of the membrane shall
leach out and deleteriously affect the durability of any of the following:
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
8/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Geotextile fleece in accordance with Section 5
Drainage mat / net, anchor drain, strip drain and / or dimple sheet for tunnel arch / wall
drainage in accordance with Section 5
Sheet Preformed Polymer Membrane in accordance with Section 3.2.
Rearguard waterstops in accordance with Section 4.1
Hydrophilic waterstops as required to construction joints and TBM precast segmental
linings in accordance with Section 4.1
Grout injection tubes for post-construction grouting of joints and supplementarywaterproofing elements installed in case of excessive leak detection in accordance with
Section 4.4
Supplementary waterproofing elements such as bentonite strips and protective
membrane strips at construction joints in accordance with Section 4.5
Compartmentalisation and termination fixings including rearguard waterstop
arrangements and membrane tapes with epoxy adhesives in accordance with the
design drawings. Spray-on waterproofing membranes in special areas where nominated by the Design
Drawings and in accordance with Section 3.4
All associated fixings for membranes including any special fittings for sealing around
penetrations and anchor bolts in accordance with Section 4
Slotted flexi-drain pipes and strip drains fixed in the shotcrete subgrade in areas where
the Waterproofing Supervisor considers that the inflow of water will impede the ability to
install the waterproofing membrane in accordance with this specification.
Slotted pipes, trench formers, inspection and maintenance pits and rockfill or gravel
drainage layers / pipe-surrounds in accordance with Section 5.2.
No-fines concrete in areas of subgrade and invert drainage in accordance with
Specification (reference BC-PBA-GLRSP301-SPC-0001).
Smoothing shotcrete to tunnel lining substrate surfaces in accordance with specification
(reference BC-PBA-GLTSP102-SPC-0001).
Blinding concrete to undrained tunnel invert substrate surfaces in accordance with
Specification (reference BC-PBA-GLTSP106-SPC-0001).
1.3 Definition of Terms
Definitions applicable to many specifications including this Specification shall include those
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
9/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
designed for the part of the expected full hydrostatic
pressure and to direct the collected seepage groundwater
to a dedicated seepage drainage system without directingit onto the roadways.
Undrained Tunnel
(Mined)
A tunnel where the permanent lining will be fully enclosed
over its entire perimeter by a waterproof membrane that
prevents the ingress of water into the tunnel and the
drawdown of the ground water table.
Extrados Exterior curve of an arch
FPO Flexible Polyolefine Elastomer (PE-PP copolymer)
HDPE High-density polyethylene
HDPP High-density polypropylene
Hot Works Permit TJH Procedure for undertaking hot works in the underground
works. (Hot works include welding, flame or arc cutting, burning
or heating.)
Intrados Inner curve of an arch
LLDPE Linear Low Density Polyethylene -
PPM Preformed Polymer Membrane
PVC-P Advanced plasticized Polyvinyl-chloride
Project Engineer Person nominated by TJHJV to oversee and approve the
construction of a defined portion of the Works, and to ensure that
the work is in compliance with the requirements of the
specifications and Quality Assurance System
Waterproofing
Supervisor
Person nominated by TJHJV to oversee and approve the
construction and installation of all Waterproofing Project Works
for the Driven Tunnels in accordance with the Project Deed
Annexure 2 Part 1 Construction Requirements Section 2.4
Waterproofing of Tunnel Structures
VLDPE Very Low Density Polyethylene
1.4 Standards and Related Specifications
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
10/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
BC-PBA-GLSSP405-SPC-0001 Global - Supplementary Specification - Structures
Grouting for Ground Water Control
BC-PBA-GLTSP101-SPC-0001 Global Supplementary Specification Tunnel Rock
Reinforcement
BC-PBA-GLTSP102-SPC-0001 Global - Supplementary Specification - Tunnel - Shotcrete
Lining
BC-PBA-GLTSP103-SPC-0001 Global - Supplementary Specification - Tunnel - Mined
Tunnels Excavation and Implementation
BC-PBA-GLTSP106-SPC-0001 Global - Supplementary Specification - Tunnel - Cast-in-place Concrete
BC-PBA-GLTSP109-SPC-0001 Global - Supplementary Specification - Tunnel - Precast
Concrete for Segmental Linings
BC-PBA-GLTSP110-SPC-0001 Global - Supplementary Specification - Tunnel - Segmental
Lining
BC-PBA-GLTSP111-SPC-0001 Global - Supplementary Specification - Tunnel - TBM
Instrumentation and Monitoring
BC-PBA-GLTSP112-SPC-0001 Global - Supplementary Specification - Tunnel - Opening
Sets
BC-PBA-GLRDR100-RPT-0100-G-02 Design Manual Global Drainage
BC-PBA-AGGHG100-RPT-0001-G-01 Global Geotechnical Hydrogeology Analysis
BC-PBA-AGDTR100-RPT-0001-F-02 Global Durability Technical Report
American Standards
ASTM D4533 - Standard Test Method for Trapezoidal Tearing Strength of Geotextiles
ASTM D1438 - Methods of Test for Pentosans in Cellulose
ASTM D4487 Standard Test Methods for Analysis of Calcium Borosilicate
ASTM D4787 - Standard Practice for Continuity Verification of Liquid or Sheet Linings
Applied to Concrete Substrates
ASTM D6132 - Standard Test Method for Non-destructive Measurement of Dry Film
Thickness of Applied Organic Coatings Using an Ultrasonic Gage
Austral ian Standards
HB 90.3 - Guide to ISO 9001:2000
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
11/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
DIN 4102 - Fire Behaviour of Building Materials and Building Components -Requirements
and Testing
DIN 16726 Perforation Test
DIN 16776 Plastic Moulding Materials; Polyethylene Moulding Materials; Classification
and Designation
EN1542 Products and Systems for the Protection and Repair of Concrete Structures
Test Methods Measurement of Bond Strength by Pull-off
EN13562 - Testing of Geotextiles Part 4: Determination of Permeability of Geotextiles
Normal to their Planes under Load of Constant Hydraulic Height Difference
EN ISO 10319 - Geosynthetics Wide-width Tensile Test
EN ISO 12236 - Geosynthetics Static Puncture Test (CBR Test)
EN ISO 12956 - Geotextiles and Geotextile Related Products -Determination of the
Characteristic Opening Size
EN ISO 12958 - Geotextiles and Geotextile Related Products Determination of Water Flow
Capacity in their Plane
EN 9864 - Geotextiles and Geotextile Related Products Determination of Mass per Unit
Area
EN 9863 - Geotextiles and Geotextile Related Products -Determination of Thickness at
Specified Pressures - Part 1: Single Layers
EN 13433 - Geotextiles and Geotextile Related Products -Dynamic Perforation Test (Cone
Drop Test)
SIA 280 - Swiss Association of Standardisation 280 - Geomembranes Products and
Construction Material Testings
Other
ISO 9002 Quality Systems - Model for Quality Assurance in Production, Installation and
Servicing
Specification for tunnelling, British Tunnelling Society and the Institution of Civil Engineers,
June 2000DVS 2225-2 Joint of lining membranes made of poly materials in geotechnical and
hydraulic engineering site testing
NACE RP0188 Discontinuity Testing of New Protective Coatings on Conductive
Substrates
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
12/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
2 Quality System Requirements
2.1 General
Specific quality system requirements are detailed within PSTS50. Construction activities
shall be carried out in accordance with the provisions of the Contractors Quality System
which shall comply with the requirements of AS/NZS ISO 9001.
2.2 Hold Points, Witness Points and Milestones
The Hold Points, Witness Points and Milestones particular to this Specification are listed in
Table 2, Table 3 and Table 4 below respectively. Refer General Specification (referenceBC-PBA-GLRSP000-SPC-0001) for Hold Point, Witness Point and Milestone definitions and
requirements.
The Contractor shall not proceed beyond a Hold Point until the Hold Point has been
released by the person nominated in Table 2. The Contractor shall notify the relevant
person when a Hold Point will be reached so that they can review and/or witness any work
process, record or test being undertaken by the Contractor and thus expedite the release of
that Hold Point.
Table 2 Hold Points
Specification
Clause
Hold
Point
Number
Hold Point Details For Release By
All relevant Hold Points outlined in the Specifications
and Project Deed including the hold points referred
to in the QDMR Project Specific TechnicalStandards (PSTS) as described in Annexure 1 Part
1.
IV
Hold Points as the Contractor deems necessary to
meet its obligations under the deedContractor
TJH shall provide necessary evidence, for the
approval of the following:
Approval of membrane details, samplesand installation methodology from the
manufacturer
Approval of the method statement for
installation of the membrane
Approval of the performance of the pre-
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
13/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Specification
Clause
Hold
Point
Number
Hold Point Details For Release By
3.3 3Visual inspection of shotcrete smoothing layer prior
to membrane installation
Waterproofing
Supervisor
3.3.1 4 Pressure testing of every welded seam
Waterproofing
Supervisor or his
nominated
competent
Membrane
Welder / Installer
3.3.1 5Inspection of membrane prior to moving form into
position for casting permanent liningContractor
3.3.3 6
Inspection of installed membrane prior to installation
of membrane protective layer before casting base
slab
Contractor
4.3 7Approval of the proposed ancillary items, including
details of installation procedures for PPM
Construction
Certifier
The Contractor shall provide the person nominated in Table 3 reasonable notice (minimum
24 hours or as otherwise specified) of all Witness Points so that inspection may be made of
the following:
Table 3 Witness Points
Specification Clause Witness Point Details For Release By
All relevant witness points the Independent
Verifier deems necessary to comply with their
requirement under the Deed.
IV
Witness points as the Contractor deems
necessary to meet its obligations under the
Deed.
Contractor
3.3.1 Pressure testing of welded seams (one offnotification thereafter no notification for dailywork activities)
Construction Certifier
3.3.1
Inspection of membrane prior to moving forminto position for casting permanent lining (oneoff notification thereafter no notification fordaily work activities)
Construction Certifier
Inspection of installed membrane prior to
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
14/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
2.3 Work Method Statements
Work Method Statements which are required to be submitted by the Contractor to theConstruction Certifier in accordance with the quality system requirements of the Contract
are listed below in Table 5.
The Contractor shall not vary the materials and the method statement(s) once they have
been accepted by the Construction Certifier without further review and acceptance by the
Construction Certifier.
Table 5 Work Method Statements
Specification Clause Work Method Statements
3.2Construction Method Statement for Installation of WaterproofingMembranes, Ancillary Items and Tunnel Drainage
Note: TBM tunnels are covered in Specification BC-PBA-GLTSP111-SPC-0001
3 Waterproof Membranes
3.1 General
3.1.1 Materials
Waterproof membranes shall be sheet polymer membranes in areas where a cast-insitu
concrete permanent lining is used (refer to Section 3.2).Spray-on waterproofing membranes
are permitted to be installed in special areas such as drained-cross-passages, substations,
sumps and ventilation tunnels, as nominated by the Design Drawings and in accordance
with Section 3.3.
In all cases where waterproofing is required the Contractor shall submit a method statement
and the full details as detailed in Table 3 (together with samples) of the proposed
waterproofing / drainage system materials for acceptance by the Construction Certifier HoldPoint 1 . The Contractor shall carry out pre-production trials to demonstrate that the
materials and proposed methods of working are suitable for their intended purpose for the
acceptance of the Construction Certifier as detailed in Table 6 below.
Table 6 Pre-Production / Installation Trials
Category of Work Description of Trial
Spray-on Membrane Pre-production panel in accordance with the manufacturers
recommendations or as otherwise agreed with the Construction Certifier
to demonstrate installation method to ensure:
minimum thickness
consistency of coating
bonding strength (including proposed test method)
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
15/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
All waterproofing materials shall be stored in accordance with the relevant manufacturers
recommendations.
All waterproofing materials shall capable of resisting the environmental conditions that they
are exposed to during construction and operation such that their design life is not impaired.
This includes exposure to sunlight, atmospheric conditions or ultra violet light and all
chemicals with which they are likely to come into contact.
3.1.2 Preparation of surfaces prior to Installation of membrane/geotextile/spay
on membranes
The Contractor shall ensure that surfaces on which waterproofing systems are installed are
clean, free from loose aggregate, sharp projections or any edges, projecting tying wire,release agents and other substances which are likely to damage or affect the waterproofing
system in accordance with the Design Drawings and section 6.2.
The Contractor shall survey the profile of the shotcrete smoothing layer to confirm it is to the
correct profile and meets the requirements of the membrane prior to fixing either a
separation layer of geotextile (or other approved drainage medium) or waterproof
membrane Hold Point 2.
The Contractor shall undertake any remedial measures required to meet the specifiedprofiles in accordance with the relevant shotcrete work method statements.
Shotcrete surfaces onto which a waterproof membrane is to be applied shall be prepared if
necessary by the addition of a shotcrete smoothing layer to remove local peaks and infill
hollows (reference BC-PBA-GLTSP102-SPC-0001) and to meet the manufacturers
requirements.
In areas where excessive groundwater is encountered during tunnel excavation as defined
by the Waterproofing Supervisor flexi-drains or strip-drains shall be installed within theshotcrete to divert water to the invert for collection.
Slotted flexi-drain pipes and strip drains fixed in the shotcrete subgrade in areas where the
Waterproofing Supervisor considers that the inflow of water will impede the ability to install
the waterproofing membrane in accordance with this specification.
Spray on membranes shall not be used in areas where the presence of water exceeds the
limits of the manufacturers recommendations.
3.1.3 Material Manufacturers Instructions
Waterproof membranes shall be installed in accordance with the manufacturer's
requirements
The installation of all waterproofing systems and surface preparation as specified shall be in
accordance with the material manufacturers' instructions unless a higher standard is
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
16/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Construction Certifier prior to implementation and be subject to all of the conditions of this
specification
3.1.5 Interaction with the Environment
The Contractor shall obtain information from the manufacturer(s) to demonstrate that the
waterproofing systems shall have no significant effect (short-term or long-term) on any part
of its environment, and must not provide any hazard to, or degradation of, the groundwater
quality or potability.
3.2 Preformed Polymer Membranes
3.2.1 MaterialsPreformed Polymer Membrane (PPM) shall consist of heat welded sheets of any of the
following materials:
high-density polyethylene (HDPE) as per DIN 16776 Parts 1 and 2
linear low-density polyethylene (LLDPE) Refer to Table 8
very low-density polyethylene (VLDPE) Refer
to Table 8
advanced plasticized polyvinyl-chloride (PVC-P) Refer to Table 9
flexible polyolefine elastomer (FPO) Refer to Table 9
PPM shall have the mechanical and physical properties specified in Table 7 and Table 9 in
both the longitudinal and transverse directions.
PPM may be used as a waterproof barrier for all, drained or undrained, underground tunnels
structures, shafts and portal headwalls (excluding TBM driven tunnels)
The membrane shall be supplied with a signal layer, i.e. a thin layer of different colour,
bonded to one side, which is intended to facilitate the detection of damage
Where reinforced concrete and/or embedded steelwork is to be placed against the
waterproofing membrane a signalling layer, to give a visual indication of any mechanical
damage, shall be provided on the exposed surface of the waterproofing membrane. The
signalling layer shall be such that it does not adversely affect the seam welds.
Evidence shall be obtained from the manufacturer that no components of a PPM leach out
in the long term such that the durability of any of the following components is adversely
affected:
the waterproofing membrane
the geotextile drainage/protective layer
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
17/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Table 7- PPM (VLDPE and LLDPE) Material Mechanical and Physical Properties
Tests Requirements
Thickness (Undrained Tunnels) as per DIN 53370
Minimum 2mm at 5% strain
Invert 2mm to 3mm
Thickness (Drained Tunnels) as per DIN 53370
Minimum 1.5mm or 2mm at 5% strain
Arch Crown 2mm
Lower arch wall 1.5mm to 2mm
Tensile strength in N/mm2 as per DIN EN ISO 5273
longitudinally min. 12 N/mm2
transversely min. 12 N/mm2
alternatively as per DIN 16726
min. 15 N/mm2(long, &trans)
Elongation at tear strain in% as per DIN EN ISO 5273
min. 300% (long &trans)
State during and following storage at 80C:
General
Change in Dimensions
Change in Tensile Strength
Change in Elongation
as per DIN 16726 or alternatively as per SIA 280
No blister formation
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
18/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Tests Requirements
Constant compressive strength as per SIA 280no leak at 7N/mm
2
Seam strength as per SIA 280
for homogeneously welded sheets: 80%
Signal Layer Membranes shall have a signal layer bonded to one
side of a different colour to facilitate detection of
damage
Table 8 - PPM (PVC-P and FPO) Material Mechanical and Physical Properties
Description Standard PVC-P FPO
Thickness incl. signal layer 1.5mm or 2 mm for seepage water
2mm or 3 mm for pressurizedwater
Thickness of signal layer
EN 1849-2 (DIN 16726-5.3,
DIN 53352)
0.2 mm
Mass per unit area/ density
(Tolerance/ Internal Audit)
EN 1849-2 (DIN 53479) individual
0.02 g/cm3
individual
0.005 g/cm3
Appearance EN 1850-2 (DIN 16726-5.1) free from blisters, cracks, external
capsule and voids
Straightness:
Flatness
EN 1848-2 (DIN 16726-5.2) 50 mm
10 mm
DSC-Analysis
(Internal Audit)
EN ISO 11357-1 u. -3 individual evaluation
of diagramm
MFR (Melt-Flow-Index)
(Internal Audit)
EN ISO 1133, 190C,
m=5kg
only for
polyolefin
materials
individual
tolerance: 15%
Tensile strength ISO 527-1/3/5 (DIN 16726-
5.6/ EN 12311-2)
12 N/mm2 15 N/mm2
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
19/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Description Standard PVC-P FPO
Dynamic perforation DIN 16726-5.12) 1500mm for
3mm
1250 mm for 3
mm
Behaviour under hydrostatic
pressure 5bar/72h (10
bar/24h)
EN 1928 (DIN 16726-5.11) no leakage
Long term compressionstrength (48h)
SIA V 280-14 No leakage at 7 N/mm2
Elastic modulus E1-2
(Material Flexibility)
ISO 527-1/3/5 (DIN 16726-
5.6)
20 N/mm2 70 N/mm2
Behaviour after storage in
aqueous solutions 28d/23C
Change of tensile strength
Change of elongation at
break
No cracks at -20C
EN 1847 (SIA V280-18; DIN
16726-5.18; EN 14414
A/B)
H2SO3 (5-6%);
Ca(OH)2(sat.);
NaCl(10%)
15%
15%
fulfil
15%
15%
fulfil
Thermal ageing(70d/70C/ hot air)
Change of weight
Change of tensile strength
Change of elongation
No Cracks at -20C
EN 1296 (SIA V280-8, DIN16726-5.13, pr EN 14575)
2.0%
20%
20%
fulfil
2.0%
20%
20%
fulfil
Behaviour after storage in
warm water (8 month/ 50 C/
weekly exchange of water)
Change of weight
SIA V280-13 (acc. to EN
14415 (DIN 53495, DIN
16726-5.18)
Jkjlds asdkfjasdf
k asdkfjas dfkasd
dfasfk asdfk
asdfk asd
4%
Not applicable to
FPO
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
20/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Description Standard PVC-P FPO
(for connections to cut &
cover structures)
Reaction to fire EN ISO 1925-2 /EN 13501-1
(DIN 4102)
min. class E (B2) min. class E
(B2)
Welding behaviour
Behaviour of the welding
seam at shearing :
Short-time-jointing-factor fz
Behaviour of the welding
seam at peeling
Resistance of peeling
DVS 2225-Part2/5
EN 12317-2
EN 12316-2
break outside
seam
0.6
Peeling is
possible, if
resistance of
peeling is
reached
6 N/mm
break outside
seam
0.6
Peeling is
possible, if
resistance of
peeling is
reached
6 N/mm
3.3 Installation of Preformed Polymer Membrane (PPM)
The Waterproofing Supervisor shall conduct a visual inspection of the profile prior to the
installation of geotextile fleece and membrane Hold Point 3.
PPMs shall be installed in accordance with the manufacturers specifications and relevant
international specification and guidelines and comply with the following principals:
The membrane sheets shall be fixed at all the nailing discs (roundels) by spot heat
welding. Alternative methods of fixing the waterproofing membrane may also be used
subject to acceptance by the Construction Certifier
Nails, welding tools or any other object shall not penetrate the membrane except in
accordance with fixing details having been accepted by the Construction Certifier
Welding of the membrane sheet edges shall be carried out by trained and suitably
experienced personnel and with purpose made equipment to form a flat double weld
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
21/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
The Contractor shall notify the Construction Certifier of his intention to commence seam
testing which shall be carried out on a daily basis as membrane lots are completed and
signed off to be handed over for permanent concrete lining works.
The test pressure shall be applied at one end of the seams and measured at the other
end to test the integrity of the whole joint.
The test pressure shall be not less than 2 bar and reduction of pressure after 10
minutes shall not exceed 20%.
Vacuum testing to 0.2 bar using a -0.8bar gauge shall be carried out on solid extrusion
welds and hot air welded patches with no loss of vacuum or visual indication of faulty
weld.
Testing pressures and results shall be marked on the membrane and recorded on the
relevant quality assurance checklist as detailed by the Contractors approved method
statement. The marking method shall not damage the membrane
Any areas failing to achieve the specified requirements shall be repaired in accordance
with the manufacturers recommendations and the repair methods detailed in the
Contractors approved method statement. In the event the area cannot be repaired it
shall be replaced. Any areas which have been repaired shall be recorded and details
submitted to the Construction Certifier in accordance with the Contractors approved
method statement.
The inspection and testing procedure for the permanent concrete lining works shall
ensure that a visual inspection of the membrane shall be made before the final lining is
sprayed or cast Hold Point 5 and Witness Point.
3.3.2 Protection
Reinforcement used adjacent to the waterproofing membrane shall be provided with suitable
protection that ensures no damage to the membrane. The protection method shall be
detailed in the Contractors approved method statement and can include plastic caps, solid
tape or heat shrink wrap over exposed cut ends and plastic flywheel or flat bottomed plastic
circular spacers to ensure suitable separation of steel to membrane. These spacers shall be
of sufficient diameter and of sufficiently short length that they will be filled with concrete.
Any burning, or welding of steel within the tunnel shall only be carried out in accordance
with the relevant Hot Works Permit and only where the membrane has been protected asdetailed by Contractors approved method statement.
Water percolating outside the membrane shall be piped to avoid the formation of water-filled
blisters. Pipes for disposal of water shall be "lay-flat" type or small diameter polypropylene
pipe suitable for removal and membrane patching prior to final permanent concrete lining
placement Where this is not possible then a proprietary system allowing the formation of a
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
22/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
The inspection and testing procedure for the permanent concrete lining works shall ensure
that a visual inspection of the membrane shall be made before the base slab is sprayed or
cast Hold Point 6 andWitness Point.
3.4 Spray-on Membranes
3.4.1 General
Spray on membranes shall not be used in areas where the presence of water exceeds the
limits of the manufacturers recommendations.
3.4.2 Materials
Spray-on waterproofing membrane shall possess the properties listed in Table 9 and shallhave a proven track record of successfully performing in a tunnel environment.
Table 9 - Spray-on Membrane Properties
Material Property Sprayed Waterproofing Membrane Requirement
Material type Cement Latex Membrane
Minimum thickness Each of the following must be satisfied:3.0mm minimum DFT(dry film thickness) applied in two coats
of 1.5mm DFT each or as otherwise recommended by the
material manufacturer
DFT measurements shall be taken in accordance with ASTM
D 1438 or ASTM D6132
Solids Content 90% minimum solids content
Behaviour when subjected to
hydrostatic pressure
Water tight in accordance with DIN 16726 tested at 4 bar for
72 hours.
Behaviour when subjected to gas
vapour pressures
Less than 1.55 x 10-9
for CO2applied at 1 bar.
Bond strength with shotcrete 1.0 MPa in accordance with EN1542:1999. Values of less
than 1.0MPa are acceptable where failure is within the
concrete substrate.
Tensile Strength 5MPa @ 28 days
Colour Minimum 2 layers; applied in alternating different colours.
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
23/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Combustion toxicity Non-toxic
Fire resistance Self extinguishing in accordance with DIN 4102-B2
3.4.3 Installation
The surface shall be prepared in accordance with Section 3.1.2
Shotcrete surface must be at least 28 days old to ensure initial shrinkage is mostly
complete.
High pressure cleaning shall be undertaken with at least 200bar/20MPa of water pressure to
remove loose particles, dirt, oil, laitance
A consistent and continuous coating shall be attained of minimum thickness as specified in
Table 9. No shadowing due to the substrate profile shall compromise the minimum
thickness. If, on inspection, shadowing is observed, the membrane shall be inspected to
assess if the minimum thickness has been attained and any required remedial action taken.
Thickness measurements shall be taken in accordance with Table 9.
Continuous adhesion testing on site shall be completed in accordance with Table 9 to
ensure the waterproofing membrane is fully bonded to the shotcrete and shall be carried out
in accordance with EN 1542.
A multi-coat system shall be used with alternating contrasting colours for each applied layer.
Each layer shall be allowed to cure for the times recommended by the manufacturer for the
relevant conditions before installation of the subsequent layer. The final colour shall be
white or otherwise highly light reflective to assist with overall lighting performance within the
tunnel.
The operatives shall be certified as competent by the Waterproofing Supervisor.
Spraying techniques shall eliminate all pinholing, holidays (i.e. missing sections) and water-
making features compromising the integrity of the waterproofing membrane. Testing for
continuity shall be completed in accordance with Table 9
3.4.4 Penetrations and Corners
All installation detailsat penetrations fixings, changes in direction, termination and the like
shall be as shown on the Design Drawings, and in accordance with the manufacturer's
recommendations. Details shall be submitted to the Construction Certifierfor approval.
3.4.5 Compliance Testing
Thickness during installation shall be monitored by utilisation of three measurements
continuously throughout the work:
Th ti f t i l h ll b h k d d d d fi ti f th
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
24/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
The Contractor shall keep detailed records of the above checks and measurements, and
repair any deficiencies found prior to placement of the tunnel permanent lining.
3.5 Submissions
The following particulars of the proposed spray applied waterproofing systems shall be
submitted to the Construction Certifier.
Manufacturer's literature and a certificate showing the waterproofing manufacturer's
name, the date and place of manufacture and showing that the waterproofing
membrane complies with the requirements stated in the Contract and including results
of tests for the following items in accordance with the minimum requirements
established in Table 9:
resistance to hydrostatic pressure
resistance to gas vapour pressure
bond stress
tensile strength
elongation
statement of durability for 100 year service life
detailed drawings from the manufacturer for termination, penetrations, fixings and
the like
Manufacturers literation to confirm the spray on membrane is compatible with any
waterstops used at the locations shown on the drawings
Particulars of ancillary items such as primer, mastic, liquid membrane, and protectionboards as recommended by the manufacturers.
The particulars, including certificates, shall be submitted in accordance with the
Contractor's Quality Assurance procedures. Certificates shall be submitted for each
batch of the material delivered to the Site.
4 Ancillary Items
4.1 Waterstops
Ancillary items such as rearguard waterstops, hydrophilic waterstops, penetrations, rondels,
proprietary membrane fixings shall be as shown on the Design Drawings and as approved
by the Construction Certifier.
All ill it h ll b tibl ith th b d b fl d
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
25/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
4.3 Submission Requirements
The Contractor shall review the compatibility of all membrane penetration and fixing
systems to ensure the integrity of the total waterproofing system and shall submit full details
of the proposed ancillary items, including details of installation procedures for approval by
the Construction Certifier Hold Point 7.
4.4 Re-injectable Tubes
The Contractor shall submit details of his proposed injection system to demonstrate that it
has a successful track record in similar tunnel environments.
Re-injectable tubes shall be installed, injected and reinjected according to themanufacturers requirements.
Re-injectable tubes are to be installed at the locations shown on the design drawings
After a satisfactory seal has been effected, all re-injectable tubes shall be fully and
permanently grouted with a 100-year durable grout.
4.5 Bentonite Bands
Bentonite bands shall be installed in the transition Zone between drained and undrained
tunnel length in accordance with the manufacturers instructions and recommendations.
The geotextile placed between the membrane and the rock shall be omitted where there is a
bentonite band.
The bands shall be installed at each end of a transition length and at the intervals shown on
the drawings.
The bentonite band shall be supplied in overlapping sheets or rolls and shall be overlapped
on the tunnel inside face by the adjacent membrane sheet by 100mm minimum (and in
accordance with the manufacturers instructions.).
Bentonite membrane shall be fixed to the substrate by nailing through roundelles or using
suitable large headed nails.
The membrane shall be fixed such that it is firmly against the substrate, to avoid stretching
and dislocation during concrete placement.
Penetrations of the bentonite band shall be avoided wherever possible. Where fixings arerequired into the rock to support loads, the penetration of the membrane shall be cut tight to
the fixing and the joint shall be sealed using a minimum 20mm fillet of bentonite paste.
A full inspection shall be carried out before casting of the final lining and any damage
rectified to the Waterproofing Supervisors approval.
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
26/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
Perforation strength (CBR) as per EN ISO 12236
1500N
Dynamic cone puncture as per EN 13433
1.5kN/m
Elongation at failure as per EN ISO 10319
> 10%
Tear strength ASTM D4533
> 200 N
Water permeability (in-plane) at2bar as per EN ISO 12958
< 0.55 mm/s
Pore opening size O90 WET as per EN ISO 12956
< 0.09 mm
Flammability Classification as per DIN 4102
Class B2
Geotextiles shall be installed as separation and filter membranes for groundwater drainage
pipes and strip drains/dimple sheets. Materials and workmanship shall conform to PSTS27,
with the following additional provisions:
Geotextiles shall be Strength Class C in accordance with Table 3, PSTS27 Geotextiles shall be Filtration Class II in accordance with Table 4, PSTS27
5.2 Drainage Materials
Groundwater drainage pipes shall be provided at the base of the drained tunnel permanent
linings for the collection of groundwater in accordance with the Design Drawings included in
Design Lot AGTDR 200
Materials and Workmanship must conform to PSTS03, with the following additionalprovisions:
Groundwater drainage pipes shall be PVC, or perforated plastic pipes, conforming to AS
1254 or AS 2439 respectively
Minimum falls for drainage pipes shall be in accordance with the Design Drawings
Thi J h H ll d J i V Ai Li k | N h B | EWAG
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
27/33
Thiess John Holland Joint Venture Airport Link | Northern Busway | EWAGGlobal - Supplementary Specification - Tunnel - Waterproofing and Drainage GLTSP107
6 Concrete
6.1 No-fines Concrete
No-fines concrete shall conform to the requirements of the No Fines Concrete Subbase
Specification (reference BC-PBA-GLRSP301-SPC-0001)
6.2 Smoothing Shotcrete
Smoothing shotcrete shall conform to the general requirements of PSTS04 and the
Supplementary Specification for Shotcrete lining (reference BC-PBA-GLTSP102-SPC-0001)
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
28/33
Appendix A
Verification Records
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
29/33
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
30/33
Appendix B
Response to Comments
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
31/33
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
32/33
No. Name Discipline Area-Organisation Document Revision Reference Reviewer Comment - IV - STAGE 2Rating
ImpactIV Status TJH Comment Designer response
Response
agreementIncorporation status
8/10/2019 Specification - Tunnel Waterproofing and Drainage Specification
33/33
Impact agreement
19 The Lateral and longitudinal pipes draining the NFC layer will be
located In small drainage trenhces below the NFC layer. These pipes
will be surrounded by 20mm graval and will act to drain water out of
the NFC layer. Thereby minimising the likelihood of water ponding in
the NFC layer for extended periods.
The system is designed to allow forced flushing of the NFC drainage
layer by inserting an inflatable plug at the lower end of the of the
lateral pipe and inserting a high pressure hose at the upper end of the
lateral pipe.
Maintenance of the groundwater drainage pipes will be undertaken bywater jetting and rodding. Maintence access to the pipes will be
provided by flush out points located at the blind end of all lateral
drainage pipes and at 60m centresalong the longitudinal drainage
pipes. Intermediategroundwater pits will replace every tird flush out
point, to provied improved access for blockage removal. Flush out
points and groundwater pits will be located at the toe of the barrier
within the road shoulder and will double as pressure relief caps to the
groundwater system.
CLOSED N/A
20 Short term and long term design groundwater inflows have been
factored by 3.0. Additional clogging factors were adopted for the NFC
drainage layer, based on 10% clogging in the short term (5 years) and
90% clogging in the long term (100 years).
Compliance with the Performance Specification will be achieved by the
adoption of robust. design elements for the groundwater drainage
system, including allowance for system redundancy via flow safety
factors, allowance for flushing of the NFC drainage layer andallowance for water jetting and rodding of the drainage pipes via
regular flushing points and groundwater pits
CLOSED N/A
21
22
23
24
25
26
27
28
29
IV Status
* Means Response acceptable - wi ll be closed when completed
Y Means Complies with Project requirementsN Means Does not comply with Project requirements
M Means Minor non compliance with Project Requirements
N/A Means Not Applicable to this design lot
Transmittal Stage Doc Number Revision Area Element Title
Review Comment External-IV-CNI