Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS

 
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Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Euston Throat – Granby Terrace to
     Hampstead Road
     Construction update

04/03/2021                               1
Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
HS2 –Britain's new high speed railway

04/03/2021                              2
Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Areas within the Euston Approaches
We have divided the Euston
Approaches worksites into three areas to help
us communicate which works are closest                              1. Vehicle Holding Area & Parkway
and most relevant to you.

1. Vehicle Holding Area & Parkway
2. Camden Cutting (Parkway to Granby Terrace
   bridge)                                                                          2. Camden Cutting
3. Euston Throat (Granby Terrace to Hampstead
   Road)

This construction update is for Euston Throat.

To view the construction update for the Camden
Cutting and Vehicle Holding Area/Parkway
please visit HS2inCamden.co.uk
                                                 3. Euston Throat
Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Euston Approaches engagement programme 2021

 Feb/Mar 2021                     mid-2021                           Sep/Oct 2021                      late 2021/early 2022
 • Newsletter                     • Euston Portal Headhouse          • Newsletter                      • Euston Portal Headhouse
 • Euston Cavern Headhouse          scheme design (seek              • Euston Approaches                 (inform final design)
   events (inform final design)     community feedback)                construction update events /
 • Euston Approaches                                                   drop-ins
   construction update events

     Ongoing engagement: community notices, stakeholder and resident briefings, Commonplace updates, HS2 Helpdesk, HS2
     drop-in events and webinars, HS2 newsletters

Tunnel design for Euston Approaches will be available in spring 2022, when we will provide details to property owners and people
living nearby.

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Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Contents
1. Construction programme and key dates       6

2. Piling
                                                  5
3. Hampstead Road utilities diversions
4. Site office                                        2

5. Granby Terrace bridge deconstruction   4

6. Rail closure                                               7

7. Lorry routes and haul road                                     3

8. Surveys                                                4
Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Construction programme – 6 month lookahead
                          Jan - Mar                            Apr - Jun                          Jul - Sep

                                                    Hampstead Road bridge
             • Utility diversions on Hampstead   • Utility diversions on Hampstead    • Utility diversions on Hampstead
               Road                                Road                                 Road
                                                     Granby Terrace bridge
             • Piling                            • Piling                             • Piling
             • Granby Terrace                    • Granby Terrace                     • Granby Terrace
               bridge deconstruction               bridge deconstruction                bridge deconstruction
                                                 • 24/7 rail closure #1              • 24/7 rail closure #2

                                                            Euston Throat

             • Piling                            • Piling                             • Piling

             • Substation install                • SCS main site offices install

             •   Please note, dates are subject to change
             •   We will provide further details ahead of key activities

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Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Euston Throat – key activities to September

  Granby Terrace deconstruction                             Piling
  20 Feb to 19 Jul                                          Dec 2020 to May 2024
  • Granby Terrace bridge deconstruction of “Span 4”        • Granby Terrace bridge – Mar to Nov 2021
  • 24/7 working and weekend works during rail closures     • Euston Throat – 16 Dec 2020 to Nov 2022
                                                            • Hampstead Road bridge – 18 Oct 2021 to May 2024

  Main site office install
                                                            Haul road by spring
  May to summer
                                                            • New site access to/from Hampstead Road in Mar
  • 5-storey site office on corner of Stanhope Street and
    Granby Terrace in May (95 abnormal loads)               • Haul road in worksite operational by spring
                                                            • We will maximise use of haul road to reduce use of
                                                              Stanhope Street site access
                                                            • There will be periods when construction activities mean
                                                              the haul road cannot be used – so we will use Stanhope
                                                              Street gate

                                                            Temporary site office
  Harrington Street sewer construction works (CSJV)         until Aug
  Ongoing until summer 2021
                                                            • Required due to reduced capacity in existing and planned
  • Phased road closures on Harrington Street                 site offices because of social distancing measures

                                                            Hampstead Road utilities diversion (phase 1 of 3)
                                                            Feb to Sep
  Dates are subject to change. We                           • Diverting utilities from the footway into the road prior to
  will keep you updated.                                      piling next to Cartmel
Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Euston Throat – key programme dates

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Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Euston Throat
SCS started main works in Euston Approaches               Works                                                      Planned dates*
between Hampstead Road and London Zoo car                 Piling – Granby Terrace to Hampstead Road                  Dec 2020 – Nov 2022
park in April 2020.
                                                          Utilities – Hampstead Road                                 Feb – Oct 2021
Euston Throat includes piling, excavation, bridge
and utilities works between Granby Terrace and            Granby Terrace bridge deconstruction                       Feb – Aug 2021
Hampstead Road bridges.
                                                          Piling – Granby Terrace                                    Mar 2021 – Nov 2021
Key structures are
                                                          Rail closure #1 including vibratory piling                 2 Apr – 17 May 2021
•   Granby Terrace bridge
•   Euston Throat Retained Cut                            Main site office corner Granby Terrace & Stanhope Street   May 2021

•   Hampstead Road bridge                                 Rail closure #2                                            17 Jul – 31 Aug 2021

We will continue to provide updates to the                Tower cranes                                               Sep 2021 – May 2026
community ahead of our works at                           Piling – Hampstead Road Bridge                             Oct 2021 – May 2024
HS2inCamden.co.uk, where you can also find maps
and content from our online construction updates.         Utilities – Granby Terrace and Throat                      Jun 2022 – 2023
                                                          Granby Terrace bridge extension works                      Mar 2021 – Jul 2026

                                                          Hampstead Road bridge extension works at surface           Jul – Aug 2023
                                                                                                                     Jan – Feb 2025
*Dates are subject to change. We will keep you updated.
                                                          Utilities – Hampstead Road                                 Nov 2024 – 2025

                                                          Hampstead Road bridge extension complete                   Dec 2025
Euston Throat - Granby Terrace to Hampstead Road - Construction update 04/03/2021 - AWS
Piling

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Euston Approaches piling summary
Area                         Location                          Piling dates          No. of piles   Piles are concrete and steel structures
                                                                                                    that are installed into the ground to
Camden Cutting               Parkway – Mornington St           Jun 2021 – Aug 2021   152            provide strength, stability and
                                                                                                    support to an above-ground structure
                                                                                                    or an excavation
                             Mornington St – Granby Terrace    Nov 2020 – Jun 2022   984            The method of piling is determined
                                                                                                    by the type of pile required, the
                                                                                                    nature of the ground, the location of
                                                                                                    surrounding railway structures and
Euston Throat                Granby Terrace – Hampstead Road   Dec 2020 – Nov 2022   360            residences, and the size of the work
                                                                                                    area.
                                                                                                    We aim to use the quietest method
                                                                                                    possible for each set of works.
                             Granby Terrace                    Mar 2021 – Nov 2021   159
                                                                                                    Auger-boring and pressed sheet
                                                                                                    piling are our preferred methods
                                                                                                    however, we will need to use vibratory
                             Hampstead Road Bridge             Oct 2021 – May 2024   472            piling during the April/May Network
                                                                                                    Rail closure

TOTAL Euston                                                   Nov 2020 – May 2024   2127           For more information please see our
                                                                                                    piling factsheet at
Approaches                                                                                          HS2inCamden.co.uk

Dates are subject to change. We will keep you updated.
Hampstead Road – utilities diversion

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Hampstead Road utilities diversion – 3-phase approach

              Feb – Sep 2021
      Phase 1 - diversion of utilities
      from the footway into the
      carriageway for piling works                      Phase 3

             Jun 2022 – 2023             Phase 2
      Phase 2 - temporary diversion
      around west side retaining wall
      and Granby Terrace Bridge

              Nov 2024 – 2025
                                                        Phase 1
      Phase 3 - permanent
      reinstatement on Hampstead
      Road Bridge
Site offices

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SCS site offices
Main SCS site offices
• 5 storey offices installed from May to
  summer 2021 – Eskdale block previously 8
  storeys
• 95 cabins lifted into site from Stanhope
                                              Former buildings
  Street by a crane
• Footway closures and parking bay
  suspensions on Stanhope Street to provide
  a safe exclusion zone
• Operational for duration of project
• Increased security presence once
  operational

Temporary site offices
• Operational till Aug
• Acoustic blankets around generators
• Angled lighting to reduce glare
Granby Terrace bridge - deconstruction

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Granby Terrace bridge deconstruction – Mar to Jul
• Deconstruction of span 4 of Granby Terrace bridge
   o Remove bridge surface
   o Cut bridge into pieces
   o Lift sections away using a 750-t mobile crane
• 24/7 working and weekend works during Network
  Rail closures
   o Phase 1: weekend of 6-7 Mar and 13-14 Mar
   o Phase 2: weekend of 17-18 Apr, 24-25 Apr, 1-2
     May, and 8-9 May
   o Phase 3: weekend of 5-6 Jun, 12-13 Jun, and 19-
     20 Jun
• Cranes and rigs on site
• Large loads during off peak hours
Rail closure – 24/7 works
     2 April to 17 May

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Rail closure – 2 April to 17 May 2021
Auger piling
•   24/7 works scheduled for 5 April – 16 May
•   Trackside piling works in Camden Cutting south of Mornington Street bridge
•   This piling method is no different to that currently ongoing on site
                                                                                          Sheet piling

Sheet piling (vibration method)
•   To be installed along the length of the track from Mornington Street bridge to
    Parkway tunnels, 5 - 30 April (Monday to Friday 8am – 6pm)
•   Designed to stabilise the ground and prevent any horizontal ground                   Auger piling
    movement, protecting the railway
•   We will use a vibration sheet-piling method for this work

Granby Terrace bridge – Span 4
•   De-construction scheduled for the weekends of 17 April – 15 May
•   The end of the bridge will be removed to make way for ground excavation          De-construction
    and bridge extension works                                                       of bridge span 4

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Rail closure – activities and consented hours
Activity in Euston Approaches                                   Date        W/E Working hours
Closure #1                                                   2 Apr – 17 May
Camden Cutting
                                                                  2 – 4 Apr   Y   24/7
Mobilisation & pile mat construction (including concrete)
                                                                                  Piling 8am – 6pm, concreting works to 10pm most
Piling – contiguous                                          5 Apr – 15 May
                                                                                  weeknights
Breaking out concrete works                                 19 Apr – 17 May       Mon – Fri 8am – 6pm, Sat 8am – 1pm
Capping beam construction work                              19 Apr – 17 May   Y   24/7
Cavern
                                                                                  Mon – Fri 8am – 6pm
Vibration sheet piling                                           5 – 30 Apr
Euston Throat                                                                     Piling 8am – 6pm, concreting works to 10pm most
Piling – contiguous                                                ongoing        weeknights

Granby Terrace bridge                                           17 –18 Apr
De-construction of span 4 (NR weekend possessions)             24 – 25 Apr
                                                                              Y   Sat 9pm – Sun 12pm
                                                                 1 – 2 May
                                                                 8 – 9 May
                                                               15 – 16 May
Demobilisation. Return of Line E to Network Rail               14 – 17 May    Y   24/7

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Vibration sheet piling
Reason                                        Method                                         Noise and vibration mitigations

Why vibration sheet piling?                   1.   A small hole is drilled into the ground   •   Vibration sheet piling will take place
•   Due to the proximity of the railway and        to limit vibration                            Mondays to Fridays, 8am to 6pm
    underground tunnels, we must use          2.   Sheet piles are positioned within the     •   Noise and vibration monitoring will be
    smaller piles than those used                  hole and dirt is replaced                     carried out on a regular basis
    previously in other areas onsite                                                             throughout the works
                                              3.   A machine drives piles down to the
•   These smaller piles must be installed          desired depth using a combination of      •   We will investigate noise and vibration
    using a vibration piling method                push-force and vibration                      alerts as quickly as possible to resolve
• We will continue to use pressed sheet       4.   To view a video of this method please         the issue and ensure the level of noise
  piling (Giken method) wherever                   search online for ‘Movax sheet piling’        and vibration remains within the
  possible                                                                                       agreed limit
Network Rail works

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OFFICIAL

Network Rail HS2 enabling work                                          10 & 17 April Saturday night
                                                                        LED Signal head installation
April 2 – 17 May 2021

NO PLANNED WORKS

Sunday 4 April 07:00 to 20:00
Installation of equipment to safely isolate       Saturday 15 May 08:30 to Monday 17 May 04:00
overhead electrical lines for piling work         Removal of isolation equipment to restore
Sunday 4 April 15:00 to 23:59                     working line
Safety checks on electrical isolating equipment
OFFICIAL

Network Rail HS2 Enabling work April 1 – 22 May
Work to take out electrical supply for    This electrical work plus work to       A mobile elevated working
 period of possession, this will take         monitor these electrical           platform will need to be used
  place adjacent to railway line in          connections will take place       midweek from 4-April for some of
Euston approaches over weekend of        overnight midweek from 4-April for     the time to check overhead line
             3 – 4 April                           safety reasons.
                                                                              connections. This is not expected to
                                                                              be noisy though when mobile it will
                                                                               need to intermittently sound the
                                                                                      horn for staff safety.

  These enabling works have been         No other work is currently planned      We will advise residents of any
 consented by Camden Council and         in the Euston approaches over this      change to our scheduled work
  are included in the Network Rail                six week period.            plans via the HS2inCamden website
 prenotification letter which covers         Please note that we may
 work from 20 February to 20 May           sometimes need to carry out          Please sign up for web alerts at
                2021                        essential maintenance and              www.HS2inCamden.co.uk
                                         emergency works on adjacent lines
                                                  at short notice
Lorry routes and haul road

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Approved lorry routes and vehicle numbers per worksite
 Compound Worksite             HS2 Act forecast             SCS forecast
                               2-way movements              2-way movements
                               (avg peak busy period)       (avg peak busy period)

Park Village East (north)                         90-136                         20-30
cavern
Carriage Shed & Park Village                     160-250
East
                                                                              300-450
Granby Terrace Overbridge                        260-280
A400 Hampstead Road                                 30-40
Overbridge
ZSL Lorry Holding Area            No forecast of HGV’s                        130-190
                                       given within ES

• Vehicles use permitted routes during their journey to and from sites
• Vehicles prioritise main roads where possible
• There are times we need to deliver large loads overnight or early
  morning for safety
• Forecasts above are 2-way movements to and from our worksites based
  on calculations in the HS2 Act
• We always aim to minimise the number of construction vehicles by re-
  using excavated materials on site, carefully planning our logistics and
  using best practicable methods for our works
• We are continually reviewing our practices to reduce the impacts of our
  works

  04/03/2021                                                                             26
Haul road

Hampstead Road access
• A haul road with access on/off
  Hampstead Road will help reduce HS2
  construction traffic on residential streets
• The haul road will change location over
  time to enable vehicles to continue using
  it whilst safely avoiding large-scale
  machinery and construction in our narrow
  worksite
• We will use the haul road as often as
  possible, however there will be periods
  where there is insufficient space to keep
  it in use
• When we cannot use the haul road, we
  will use approved lorry routes to access
  our worksite via Stanhope Street gate.
• Haul road will be in use from end of
  Summer 2021 as a throughfare for site
  traffic

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Survey's update

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Pre-condition surveys
• Pre-condition surveys are visual inspections by an independent accredited surveyor to capture the existing condition of a proper ty
• Required for all properties along the HS2 route within the zone for predicted ground movement of more than 1mm for listed buildings
  and more than 10mm for non-listed buildings
• These are the same as the surveys referred to in the C3 Information Paper regarding Settlement Deeds (but if completed earlier than the 3-6
  months immediately before excavation works, we may need to refresh them, by agreement)
• In the case of any future claims for damage, the survey will provide an independent baseline record against which to compare condition
  before and after our works – this will assist both parties by enabling a quicker assessment and claims process by reducing the need to prove
  the damage was not pre-existing
• Copies of the report will be available on request and are normally issued just to property owners but will also be provided to long-term
  leaseholders if requested

What is covered
•     Walls and floors
          o      Cracks, sign of movement, vibration, deformation, damage and displacement to the property structure and fabric
          o      Bulges, include size and location
          o      Water damage or ingress
          o      Internal and external finishes
•     Tree positions, types and diameters

    04/03/2021                                                                                                                               29
COVID - 19
We are continually reviewing the works of our surveying team in line with Government and Public Health England (PHE) advice on dealing with
COVID-19.

The Government’s current Covid-19 strategy makes clear that construction activity can continue as long as it complies with this guidance and
those working in construction have been actively encouraged to go to work.

Several measures will be in place to protect residents and members of our surveying team. These will at least include

  •   when making contact we will confirm with you whether you are happy for us to attend and that that there are no health issues with people
      that live in your home. We will also confirm that there are no health issues within our team
  •   we will keep staff numbers to a minimum within your property
  •   before entering any property, we will sanitise our hands and any equipment and we will wear appropriate personal protective equipment
  •   where possible, windows will be opened while our surveyors are working for better ventilation
  •   all surveyors will receive weekly COVID-19 testing
  •   all surveyors will carry laser thermometers and check their temperature before entering each property
  •   we will notify residents should any of our surveyors test positive within two weeks of entering their property

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Compensation and repairs
                                                                           Protection
      The High Speed Rail (London – West Midlands)                                                                 Schedule 2
                       Act 2017                                                    •   Allows HS2 to strengthen/support a structure in the course of carrying out
                                                                                       works
  •    Automatically protects home-owners in the unlikely event your property is
       damaged by our works                                                        •   Allows HS2 to leave in place (temporary of permanently) any materials
                                                                                       associated with the strengthening/support works
                                                                                   •   Allows for owners/occupiers to be compensated for any loss they may suffer
                                                                                       as a result of the support/strengthening works
                                                                                   •   Any disputes or disagreements regarding compensation are determined in
                                                                                       accordance with Part 1 of the Land Compensation Act 1961.

                                                                                                        Using Crossrail and Channel Tunnel Rail Link
                                                                                                      process – a tested mechanism for settling minor,
                                                                                                        construction related residential, business or
  Claims                                                                                               agricultural claims for which HS2 is responsible
 Two ways to deal with compensation and claims under Schedule 2:
                                                                                                           Overseen by independent Resident’s
  •    dedicated compensation claims service via LPClaims@hs2.org.uk                                   Commissioner whose job it is to make sure HS2
                                                                                                       keeps its promises and to mediate and respond
  •    parallel Small Claims Scheme (information Paper C10).
                                                                                                                       to complaints.

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Information and enquiries

     •   Newsletters, community notices, updates and further information available at HS2inCamden
     •   Euston Approaches works map at HS2inCamden is updated weekly to keep you informed about
         current and upcoming works
     •   For all enquiries, compliments or complaints please contact the HS2 Helpdesk
             •   Freephone 08081 434 434
             •   Email HS2enquiries@hs2.org.uk

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