Appendix C Part 3
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POTENTIAL WEST BROMPTON STATION ENHANCEMENTS STAGE C REPORT " PRIVATE AND CONFIDENTIAL DRAFT FOR DISCUSSION September 2011 Document Number 002 Executive Summary Contribution to the document / Name Aedas Architects Ltd CapCo has appointed Aedas to undertake a study of potential Next Steps enhancement opportunities at West Brompton station to RIBA Stage C. The station is an important hub on the Wimbledon The preferred station enhancement option developed in this Revision History Second Draft Issue branch of the District Line and the Overground West London Line report represents a potential outline design based upon the (WLL), serving Earls Court Exhibition Centre, as well as residents current information available. It is considered that the works to and businesses in the surrounding area. construct the proposal can be carried out in a relatively short Document Title West Brompton Station Enhancement Study timescale, subsequent to detailed design and approval of It is anticipated that with the redevelopment of the Earls Court proposals from all relevant parties, including English Heritage. site there will be growth in usage of the station, and that Profession Architect improvements may be considered to ensure a satisfactory level of Dimensional information has been taken from historic record service for passengers leaving and arriving. drawings and localised site measurements. It is proposed that a full topographic survey be carried out in the next stage of the Date 10/09/2011 A dynamic passenger modelling assessment, carried out by design to con#rm site dimensions and de-risk the programme of Halcrow, has identi#ed areas of the station that would bene#t works. from capacity enhancement under current conditions, through Revision 1 increasing the number of gates at the ticket hall, and the The record drawings and visual surveys have revealed that there widening of stairs and passageways. are no signi#cant services that will require diversion as a conse- quence of the works. To con#rm this assumption it is proposed Location West Brompton Station that a services survey also be carried out in vicinity of the works Objectives proposed within the ticket o%ce and historic train shed to the rear of the ticket hall. The objectives of this study are threefold: During the next stage of the design there are a number of 1. To understand the potential to increase station capacity departments within TfL, London Underground and Network Rail relevant to passenger growth forecasts and assessment of the that it is proposed will be consulted with for approval of opera- proposed Earls Court Development ; tional and technical aspects of the proposal. 2. T o understand the potential for the provision of full step free It is also recommended that further consultation is undertaken access between platforms and the ticket hall; with Transport for London Equality and Inclusion to gain assurance that the proposals are in accordance with current 3. To understand the provision for improvements to the station’s station accessibility requirements. appearance through general refurbishment of the entrance and ticket hall. Aedas has discussed the proposals with London Underground’s Chief Lift Engineer and Accessibility and Inclusion Manager who Each of the above objectives are to be considered while taking have o$ered technical advice regarding the passenger lift into account the constraints associated with the station's Listed solution, and have commented that they support the step-free Building status. access proposal in principle. Over the course of the four week study, Aedas has reviewed the As West Brompton Station is a Grade II listed structure, it will be existing record information for West Brompton station, together important to liaise with English Heritage through each stage of Originated by: Authorised by: with the dynamic modelling assessment, so as to develop the design process. potential outline station enhancement options that meet the above objectives. Aedas has met with CapCo on to discuss the enhancement options and to determine a preferred solution for the purpose of presentation to consultees. Arup has been consulted with Neil Baker Tim Narey regarding the structural feasibility of preferred option, and has Associate Divisional Director o$ered recommendations that have been recorded in this report. Aedas Architects, 5-8 Hardwick Street, London, EC1R 4RG Aedas Architects, 5-8 Hardwick Street, London, EC1R 4RG WEST BROMPTON STATION ENHANCEMENTS STAGE C REPORT 5 CONTENTS 1 CONTEXT 1 CONTEXT 5 1.1 EXISTING STATION LAYOUT 6 1.2 PHYSICAL CONSTRAINTS 8 1.3 DYNAMIC MODELLING 10 1.4 EXISTING FINISHES 11 2 CAPACITY ENHANCEMENT 13 2.1 EXISTING TICKET HALL 14 2.2 GATELINE OPTIONS 15 2.3 PREFERRED GATELINE OPTION 16 3 STEP FREE ACCESS 19 3.1 EXISTING PLATFORM ACCESS 20 3.2 OVERVIEW OF SFA OPTIONS 21 3.3 LIFT OPTION 1 23 3.4 LIFT OPTION 2A 24 3.5 LIFT OPTION 2B 25 3.7 PREFERRED LIFT OPTION 26 3.8 IMPACT ON EXISTING 28 3.9 DYNAMIC MODELLING 30 4 TICKET HALL REFURBISHMENT 33 4.1 EXTERNAL FINISHES 34 4.2 INTERNAL FINISHES 35 6 WEST BROMPTON STATION ENHANCEMENTS STAGE C REPORT WEST BROMPTON STATION ENHANCEMENTS STAGE C REPORT 7 1.1 Existing Station Layout The structure covering platforms 1 and 2 is 66 ft (20.12m) long, divided into six bays of brick arches, with a roof of nine bays of segmental-headed iron trusses, supporting a wooden roof with a West Brompton Station is located on Old Brompton Road, directly EDF ENERGY SITE central glazed lantern. opposite Earls Court Exhibition Centre. The original building is one of the oldest stations on the London Underground network, To the south end of the structure is a wooden framed gable-end having been constructed in the 1860s, and is widely regarded as clad in vertical planks and supported on square wooden piers the best preserved example of a District Line station. The building and pilasters with moulded pendants. This angled roof is is protected with Grade II listed status by English Heritage due to OLD BROMPTON ROAD considered a prototype for later stations on the District Line. its historic importance. PLATFORM 1 Ticket The ticket hall connects with the #rst of two platform footbridges The original station, designed by Sir John Fowler, opened in 1869 Hall in the covered section through two of the original, round-headed as an extension of the Metropolitan District Railway. A portion of (See page 14 EASTBOUND DISTRICT LINE arches in the rear wall of the building. the building was demolished in 1928 as part of the sale of a plot STATION for detail) HISTORIC TRAIN SHED / of land to the east of the station to the London Electricity board. ENTRANCE COVERED AREA OF PLATFORMS The #rst footbridge connects with platforms 1 and 2 by a 1.4m The station is built in the Victorian neo-classical style with white WESTBOUND DISTRICT LINE wide stair to each platform. Adjacent to the eastbound platform Su$olk bricks and a slate pavilion roof. stair is a ramp to a second footbridge that again connects with PLATFORM 2 platforms 1 and 2 by a wider, 2.1m stair to each. To the rear of the building is an iron, timber and glass train shed roof that was originally accessed through #ve round-headed The two footbridges have decorative balustrading, square newel arches in the rear wall of the ticket hall. This train shed provides posts and mahogany handrails supported on decorated cast iron cover over the north end of platforms 1 and 2 serving the District PLATFORM 3 columns. Their parapets include criss-crossed iron strap panels Line. Immediately to the west of the station building, also that are considered one of the most important heritage features accessed through the train shed, are platforms 3 and 4 serving of the building. the West London Line. The property to the east of the station is LONDON LINE owned and operated by EDF Energy as an electrical transformer Passenger Lift SOUTHBOUND WEST The second footbridge structure continues through an opening station with o%ces. in the historic train shed wall and connects with an external, uncovered, modern bridge structure that spans over the West WEST LONDON LINE The station is accessed o$ of Old Brompton Road through two NORTHBOUND London Line platforms. This bridge is connected with platforms 3 narrow entrances into the ticket hall. The ticket hall has a compact PLATFORM 4 and 4 by a 1.5m wide stair and a passenger lift to each platform. layout comprising one ticket issuing window, three automatic gates and one manual wide aisle gate. To the right hand side of Platforms 2 and 3 (westbound District Line and southbound WLL) the ticket hall is a ticket vending machine enclosure containing e$ectively form an island platform, with a pailsade fence and gate one Multi-fare Machine (MFM) and one Few Fare Machine (FFM). controlling access between the two. The passenger lift to platform 3 is also accessible by passengers on platform 2, leaving A Gateline Attendance Point (GLAP) sits between the gateline and platform 1 the only area of the station without step-free access. the ticketing suite. On the paid side of the gateline there is a small excess fares window occupying a narrow space between the GLAP and the rear wall of the ticket hall. It is worth noting that the Passenger Lift area of the ticketing suite is unusually larger than the public concourse in the station building. The sta$ accommodation is comprised of a separate Station Control Room and Ticket O%ce, together with a locker room, station o%ce and two WCs. The suite is accessed through a generous secure lobby with two entrances; the #rst connects with the ticket hall by a door adjacent to the Existing Station Layout ticket window, and the second accesses directly onto a platform footbridge in the covered section of the platforms, known historically as the train shed.