Colquhoun Square Design Statement

This is a summary design statement for Colquhoun Square redesign, part of the wider Helensburgh CHORD project.

The purpose of this design statement is to confirm what is intended through the design.  It shows the proposals in comparison to the existing design. 

Take me straight to -

Proposed Design | Planning Grid | Human Scale | Tree & Planting Structure | View Corridors | Reclaiming the Square from the Car | 4-way Vista | Layout Desire Lines | Events Configuration | Example Soft Landscaping

Scottish Government – Designing Places

According to national policy successful places

  • have a sense of identity
  • create safe and pleasant spaces
  • allow easier movement
  • have a sense of welcome
  • be adaptable
  • make good use of resources

The design for new Colquhoun Square addresses each of these points.

The square has been designed in close consultation with stakeholders and has secured planning consent.

Colquhoun Square - Proposed Design Objectives

Colquhoun Square as proposedPedestrian focused environment with reduced pedestrian / car conflicts

The pedestrian can get to the heart of the space – it will be the only place to get a 4 way vista to celebrate the town grid

Increased pedestrian environment on the sunnier north side of the square

Creates a coherent town square rather than a crossroads dominated by vehicles

Respects the town grid by planning the new square on a grid with symmetrical elements picking up on the surrounding architectural context and maintaining view corridors

Becomes a gathering place for town events and the home of an open air town museum

 

 

Colquhoun Square - Proposed Design

 3D view of the proposed design

Key Facts

Existing

Proposed

Comment

Total area of Square7170m27170m2 
Total Pedestrian Space1960m24332m2+221%
(including natural stone)82m22561m2 
Total Roads3176m21609m2-50%
(including stone setts)0m2653m2 
Total Soft Landscape1977m21116m2-43%
(including shrub planting)517m2754m2 
(including tree planting)9 trees16 trees 
Number of lights1528 
Number of benches2023 
Linear length of seating0m128m 
Number of bins59 
Road crossing widths24.5m direct  
 12m straight7.3m straight 
Monuments2 celtic crosses2 celtic crosses 
ArtworkOccasionalMuseum - open air plinths 
    

Summary of the Key Issues

  • Reduces pedestrian and car conflict with reduced north-south traffic links
  • Reduces road widths and crossing distances
  • Reduces clutter caused by parked cars
  • Reduces the amount of space given to the car from 44% of the total to 22%
  • Increases pedestrian environments from 27% to 61% of the total area
  • Creates a step free environment across the square
  • Increases the number of seats and seating opportunities – including over 120m of new linear seating
  • Increases bin provision by nearly double
  • Increases illumination with nearly twice as many lights
  • Increases the number of civic trees and amount of shrub planting in the square
  • Increases the quality of finishes with natural stone finishes over 45% of total area
  • Creates an adaptable events space which is 11% of the total area

Colquhoun Square - As existing

Colquhoun Square - As existing

Colquhoun Square as Proposed - overlaid on existing

Colquhoun Square proposed - overlaid on existing

Points to note -

  • Width of new central space relative to the existing monuments – compare this width with the proposed central open space
  • Line of new road alignment relative to existing cross roads
  • Reduction in roads width and crossing distances
  • Width of new central space relative to the existing monuments – compare this width with the proposed central open space
  • Line of new road alignment relative to existing cross roads
  • Reduction in roads width and crossing distances

 

 

Planning Grid

Colquhoun Square - planning grid

 

Points to note;

  • Use of planning grid which ties into existing architectural features
  • Use of symmetry to respect town grid
  • Use of geometry to take up discrepancies in the town grid

 

 

 

 

 

 

Making the Square Human Scale

Colquhoun Square - human scale

Points to note;

  • The spatial enclosure of the square is very strong
  • However the extent of the space if very large and needs modulating to avoid being a vast open space
  • The spatial enclosure of the square is very strong
  • However the extent of the space if very large and needs modulating to avoid being a vast open space
  • Using structure planting the square is modulated into a series of smaller spaces which provide a range of scales and openness

Colquhoun Square - human scale

 

 

 

 

 

 

 

Tree & Planting Structure

Planting structure of Colquhoun Square

 

Points to note;

  • Dispersed planting strategy to provide a green framework for the space
  • Creation of pocket spaces between planting to mediate between town / civic and human scale
  • Greenery visible from all 4 approaches to the square with street trees linking in to West Princes St.

 

 

 

 

 

Tree and planting structure

 

Points to note;

  • Dispersed planting strategy to provide a green framework for the space
  • Creation of pocket spaces between planting to mediate between town / civic and human scale
  • Greenery visible from all 4 approaches to the square with street trees linking in to West Princes St.
  • Green framework augmented by tree planting setting out

 

 

 

 

View Corridors

View corridors

 

Points to note;

  • Maintenance of key view corridors across and through the square
  • Framing of key views and vista to key buildings on the north side of the square

 

 

 

 

 

 

 

 

Reclaiming the Square from the car

 Reclaiming the Square from the car

 

Points to note;

  • Reducing road widths
  • Increasing positive pedestrian environments
  • Areas of red hatch new pedestrian environments created from current carriageway locations

 

 

 

 

 

 

The 4-way Vista in Celebration of the Grid

The 4-way Vista from Colquhoun Square

 

Points to note;

  • Reclaiming the zone shown in red from the east west road through the square
  • Enabling the pedestrian to safely enjoy the four way vista of the Helensburgh grid; the only location this can be achieved in the town centre

 

 

 

 

 

Layout Desire Lines

Existing                                                       Proposed

Existing layout desire linesProposed layout desire lines

 

Points to notePoints to note
  • Restricted choice of routes
  • Increased choice of routes
  • Very long crossing distances
  • Shorter crossing distances
  • Lack of direct/diagonal routes due to grassed quadrants with planting
  • Reduced car/pedestrian conflict

 

  • More direct/diagonal routes due to broken planting arrangements

 Event Configuration

Colquhoun Square configuration for a concert

Concert

  • 14 x 9m stage, approx. 63 man choir
  •  portacabins, sound engineer, food and drink stalls
  •  >900 visitors

concert stage set up

 

 

 

 

 

 

 

Farmers Market

Colquhoun Square configuration for a market

36 3x3 stalls

 

Image of previous market

 

 

Food Festival

Colquhoun Square configuration for food festival

 

10 6x6m canopies

Image from food festival

 

 

Ice Rink

Colquhoun Square configured for an ice rink

 

  • 20 x 10m ice rink
  • changing rooms, shoe hire, 12 food stalls

 

 

 

 

 

 

 

 

Art Fair

Colquhoun Square configured for an art fair

 

25 x 15m marquee

 

Example marquee

 

Example Soft Landscaping Species

Example of soft landscaping species