Consultative Working Group: South Kensington Station Upgrade - - PowerPoint PPT Presentation

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Consultative Working Group: South Kensington Station Upgrade - - PowerPoint PPT Presentation

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SOUTH KENSINGTON CWG: 20 JUNE 2017 20 JUNE 2017 Consultative Working Group: South Kensington Station Upgrade SOUTH KENSINGTON CWG: 20 JUNE 2017 Design optimisation Appointed Working with TfL technical teams and Alan Baxter Ltd. Progress:

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SOUTH KENSINGTON CWG: 20 JUNE 2017

Consultative Working Group:

South Kensington Station Upgrade

20 JUNE 2017

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SOUTH KENSINGTON CWG: 20 JUNE 2017

Design optimisation

Appointed Working with TfL technical teams and Alan Baxter Ltd. Progress:

  • improved layout
  • reconsider phasing approach
  • proposed finishes for canopy and proposals for platform space
  • look and feel of other elements
  • security considerations
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Design optimisation

Next steps:

  • finishes for internal and external ticket hall
  • finishes for emergency escape
  • approach to island platform barrier
  • detail to support listed building consent application
  • design assurance with internal engineering teams and fire brigade
  • prepare application package
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On-going engagement

  • today: to seek feedback on design progress
  • summer: pre-application meeting with RBKC
  • September: integrated CWG meeting and public exhibition
  • submit listed building consent application
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Holistic overview plan

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Holistic overview section

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Revised phasing approach

  • improve design coordination
  • integrate applications with

development around the station

  • reduce abortive works
  • reduce impact to operational station
  • increase safeguarding for step-free

access

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Progress on design optimisation

  • proposed finishes for canopy
  • platform spaces
  • customer information
  • indicative platform level images
  • emergency escape
  • platform barrier
  • internal ticket hall and extension
  • external ticket hall extension
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Canopy and platform

  • recap of design
  • materials
  • creating space
  • sustainable drainage including landscaping
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Relationship of columns to Grade II listed Revetment Wall

Station datum points

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SOUTH KENSINGTON CWG: 20 JUNE 2017 VIEW 4 - View from Train on arrival –Strong grand rhythm of arches- sense of arrival VIEW 3 – along platform VIEW 2 - from island platform VIEW 1 - from platform stairs/ and ticket hall

Canopy: views

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View 1: from stairs

Simplified canopy connection to ticket hall extension

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Views 2-4

VIEW 2 - from island platform VIEW 3 – along platform VIEW 4 - View from Train BASE DESIGN – aligned to arch spring point PROPOSED DESIGN – aligned to top of arch

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+100.90 +100.90

Canopy: datums

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Light- touch design approach aligned to key datums Proposal does not compete or detract from the revetment wall arches but celebrates the listed structures and sense of arrival.

Primary Secondary

Proposed canopy

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AXO -COMPONENTS

Concealed fall restraint system Metal roof Local skylight (diffused natural daylight) Wooden baffle ceiling with rigid mesh backing Hinged maintenance access panels with safety restraint Linear service channel (Lights and PA loud speakers) Edge I-beam Cantilevered tapered steel to provide thin edge CMS penetrations through steel Spine beam Circular column with sleeved top and bottom connections Walkable gutter with integrated anti-slip membrane and hopper outlets Structure Soffit Roof

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Proposed canopy material – warmer soffit (traditional/ contemporary balance)

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Proposed canopy material – warmer soffit (traditional/ contemporary balance)

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Proposed canopy skylights – filtered light

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Proposed canopy skylights – filtered light

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Proposed canopy skylights – filtered light

Module 2 Module 1 Module 1

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Proposed canopy – module 2

Creation of space

Seats Seats

Sustainable urban drainage strategy with low maintenance planting

  • High quality passenger

transition/ seating environment

  • Articulating canopy over length
  • Enhancement of space
  • Sustainable design
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Articulation of canopy modules

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Customer information inventory

(fewer and smaller advertising posters)

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Customer information – approach 1

  • Simplified roundels on revetment piers as existing (backboard omitted)
  • Signage frieze integrated between canopy columns
  • Considerations;
  • Location of frieze detracts from simplicity of canopy and revetments
  • Back face of frieze to be considered
  • 2.5x larger spans- heavy structure- increased width/ depth- bird

mitigation measures required

  • Frieze obscured directional signage and breaks rhythm of revetments
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Customer information – approach 2

  • Simplified roundels on revetment piers as existing (backboard omitted)
  • Signage frieze integrated between columns on separate structures
  • Considerations;
  • Restriction to passenger movements
  • Location of frieze detracts from simplicity of canopy and revetments
  • Back face of frieze and directional signage to be considered
  • 2.5x larger spans- heavy structure- increased width/ depth- bird mitigation

measures required

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Customer information – approach 3

  • Simplified roundels on revetment piers as existing (backboard omitted)
  • Signage frieze integrated between revetment arches on with minimal sleeved/

pinned connections

  • Reduced number of directional signage boards.
  • Considerations; additional fixings to revetment.
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Customer information – approach 4

  • Simplified roundels on revetment piers as existing (backboard omitted)
  • Signage frieze integrated between revetment arches on with minimal sleeved/

pinned connections

  • Directional signage boards added in linear band below frieze. Increased depth
  • f frieze, but no additional fixings and covering up of revetment wall piers

required

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Module 2 Module 2 Module 2

Platform arrangement

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Indicative image: canopy and platform arrangement

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Proposed canopy

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Proposed canopy

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Proposed canopy

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INTERCHANGE 2.6m

Proposed escape stairs

Alternative safeguarded interchange location

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Proposed escape stairs

Alternative safeguarded interchange location

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Island platform barrier

principles

Unused space Higher barrier (translucent material) Eye level

Plan Lower setback barrier Plan Higher barrier positioned closer to train Section Lower setback barrier Section Higher barrier positioned closer to train

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Proposed Ticket Hall

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Arcade reference image

Aspiration to use clear glass to match arcade, subject to security requirements Aspiration to tidy up M&E services Visually consistent and durable lightweight flooring required. Restricted loading capacity of existing ticket hall steel.

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Proposed Ticket Hall

Internal

Aspiration to use clear glass to match arcade, subject to security requirements Strategy for relocation of services to be developed to enhance the architectural setting around ticket hall Aspiration to restore to structure to match arcade treatment Durable lightweight flooring required due to loading restrictions

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Proposed Ticket Hall

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Proposed Ticket Hall

Secure by design (visibility/ legibility)/ Heritage/ maximising daylight 1) Clear glass to visually separate ticket hall extension from Revetment wall- consistent with canopy 2) Secure by design lift shaft- increased visibility/ intuitive wayfinding 3) Glass screen to increase legibility and natural daylight

Maximised internal volumes

Height of glass façade/ balustrade (dotted outline) is subject to security & smoke modelling. Aspiration for reduced height to celebrate revetment.

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Interfaces with historic structures

Sackler Gallery

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192 Shoreham Street Heritage project A Victorian industrial brick building sited at the edge of the Cultural Industries Quarter Conservation Area of Sheffield. The project was named Sheffield Building of the Year 2012 and won an RIBA Regional Award 2013

Proposed Ticket Hall

External treatment

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Proposed Ticket Hall

External treatment

Clear glass to match arcade Structural silicone Toughened laminated glazing with ceramic frit and self Bio clean external pane Indicative material, colour to be determined GRC panels to face of lift shafts

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Holistic material overview section

Contemporary industrial palette of materials

Structural silicone glass Charcoal metal facade Glass reinforced concrete Charcoal metal roof Wooden baffle ceiling Glass skylights Mesh panel/ dark stanchions ELEMENT 1 - TICKET HALL ELEMENT 2 - CANOPY ELEMENT 3 – ESCAPE STAIRS BARRIER Perforated metal panel Glass platform barrier

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Proposed canopy

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On-going engagement

  • today: to seek feedback on design progress
  • summer: pre-application meeting with RBKC
  • September: integrated CWG meeting and public exhibition
  • submit listed building consent application
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Questions?