Speed restraint by design

Transcription

1 0 MOVEMENT MOVEMENT 0. Traffic management Speed restraint by design Street design must ensure that the permitted speed limit for each type of street is not exceeded. It is essential to provide traffic calming measures into the development, which are self-enforcing. This must be achieved by careful use of design elements that are acceptable by highway design standards and will help realise safe streets for all users. Horizontal alignment - a change in alignment of the carriageway helps reducing the speed Vertical tables - should be provided at key junctions to reduce traffic speed and allow free pedestrian and bicycle crossings Carriageway narrowing Use of landscape elements - trees, on street parking and other landscape elements should be used carefully to achieve speed control Design of surface materials - thoughtful design of surface treatment i.e. bands / strips in different materials helps with traffic calming and creates a pedestrian friendly environment Horizontal alignment - a change in alignment of the carriageway helps reducing the speed

2 0 MOVEMENT MOVEMENT 0.0 Street trees Key design guidance Tree pit detail Tree spcecies Distance from buildings The selection of tree species and their arrangement will define the movement network and support traffic calming measures, establishing a coherent streetscene. Source of graphics - reenleaf Urban tree and landscape products Large species trees should be planted at 0-0m spacings Small species trees should be planted at 0-0m spacings Semi-mature specimen trees in key public squares should be planted at - 0cm girth for instant impact Where planted in plant beds or verges, high strength linear root barriers should be installed on either side of planting 00mm depth. (reenleaf RER0x.A ReRoot 000 ribbed root barrier or similar approved) reenleaf RURBA RootRain Urban rootball watering system should be installed for each tree to ensure water accesses the roots and is NOT surface watered reenleaf RER0x.A ReRoot 000 ribbed root barrier should be installed on primary streets on the highway side of planting 00mm depth reenleaf RER00A ReRoot 00 ribbed root barrier should be installed on primary streets on the cyclepath side of planting 00mm depth reenleaf LSCM0A StrataCell root and soil support system should be installed beneath hard surfacing to increase soil rooting volume and reduce compaction Each tree to be underground guyed with reenleaf SASMP Arborguy Trees in hard surfaces should be set within a reenleaf CASTLEA tree grille or similarly approved, which allows paving over the tree pit. Trees under-planted with shrubs in each planting bed and mulched to mm depth BUSWAY PRIMARY STREET SECONDARY STREET TERTIARY STREET / MEWS SQUARES / POCKET PARKS Feature Trees Platanus hispanica London Plane.m Tilia cordata Small leaved lime.m Please refer to page for small and medium trees Feature Trees Carpinus betulus Hornbeam.m Corylus colurna Turkish hazel 0m Please refer to page for small and medium trees Pyrus calleryana Chanticleer Ornamental pear Prunus subhirtella Autumn cherry Sorbus aucuparia Mountain Ash Acer campestre Elegant Field Maple Elegant Distance from buildings should be in accordance with NHBC Technical Standards Note. Acer campestre Streetwise Crataegus prunifolia Sorbus aria Majestica Sorbus aucuparia Field Maple Streetwise Broad leaved Cockspur Thorn Whitebeam Mountain Ash Distance from buildings should be in accordance with NHBC Technical Standards Note. Prunus avium Cherry tree Tilia cordata Small leaved lime Cornus mas Cornelian cherry Malus huphensis Apple tree Acer campestre Streetwise Field Maple Streetwise Sorbus aucuparia Rowan, Mountain Ash Acer campestre Malus huphensis Tilia cordata Amelanchier lamarckii Snowy mespilus Distance from buildings should be in accordance with NHBC Technical Standards Note. Prunus avium Table. - Street trees 0

3 0 MOVEMENT MOVEMENT 0. On street parking ACCEPTABLE PLAN BUSWAY On plot front access garages behind the building lines N/A PRIMARY STREET On street unallocated parallel parking on one side of street interspersed with regular street trees On plot front access allocated parking space SECONDARY On plot to side of semi detached and end of terrace properties On street unallocated parallel parking interspersed with regular street trees Well designed on street parking integrated with the public realm Well designed on street parking integrated with tree planting TERTIARY STREETS / MEWS / PRIVATE DRIVEWAYS On street unallocated parallel and perpendicular parking interspersed with regular street trees. SQUARES Provision of car parking in front of garages when not designed to spill out parking must conform the boundary elements to avoid parking on footway Hard and exposed front private drive must be avoided, use of soft boundary and tree planting must be maximised Parallel parking on footway must be avoided Car ports must not have open fencing allowing unattractive views into the space from the public realm Table. - On street parking

4 0 PUBLIC REALM PUBLIC REALM 0. HIHWAY PUBLIC REALM This section provides guidance for the Phase public squares and key street junctions.

5 0 PUBLIC REALM PUBLIC REALM 0. Squares Hierarchy of squares TYPE PLAN DEFININ FEATURES APPROX. RATIO HARD LANDSCAPE SOFT LANDSCAPE PRINCIPAL SQUARE Common: High quality public realm, enclosed by continuous building frontage with uniform building heights and use of landmark buildings to define space. On street parking and wide footpaths. Potential for public art Local centre: Community building anchoring the corner of the civic green to be a landmark. Shared surface with spill out spaces for cafes, local farmers market along the civic green School square: School building addressing square / community park to be a landmark / marker structure terminating view along the dedicated busway from the north which must incorporate a school drop off point : : Common: High quality paving materials, predominantly unifying surface treatment, consisting of block paving, bound gravel and asphalt. Lighting columns, seating and litter bins. High quality tree grilles School square: Change in materials of the shared and traffic calmed space to define the school boundary Native street trees evenly spaced - species contrasting with primary street trees to define square. Use of - 0cm girth semi-mature trees. Specimens to have a uniform canopy School frontage: Enclosed with.m or.m high steel fence backed by clipped native hedgerow to define the school boundary SECONDARY SQUARE (key junctions on primary street and dedicated busway Secondary public squares designed within circular road layout. Formal, internal shared space to incorporate amenity grass, avenue trees, seating and water. Squares are to be overlooked by residential properties served by on street parking : :-: Setts or block paving to define parking zone with natural stone sett edging. Change in road surface material to define square Native low hedging clipped and avenue trees planted within grassland PLAY AREA SQUARES Small informal green spaces within street network, overlooked by residential properties :-: Timber seating Mixed native formal and informal planting consisting of grass and hedges and trees Figure. - Diagram showing public squares location Principal squares TERTIARY SQUARES (important nodes on secondary and tertiary streets) Small informal hard spaces within secondary and tertiary street network, designed within road layout. Squares are overlooked by residential properties and served for traffic calming and will be used to create a pedestrian friendly network : :-: Timber seating Traffic calming street furniture elements Predominantly hard landscape with opportunity to provide specimen tree planting on appropriate locations to create an interest Secondary squares Key squares / play areas Tertiary squares (locations shown are indicative only) Table. - Squares

6 0 PUBLIC REALM PUBLIC REALM 0 Principal square Local centre - gateway square Shared surface - one way street from south to north providing access to east frontage of the local centre. Parking to help animate the square - use of paving / banding consistent through the square and the absence of defined road edge defines a pedestrian owned space Trees emphasise the entrance to the square and help define a change of use and the edge of traffic free areas Traffic management - a raised table defines the square and extends to cover two minor road junctions (see diagram opposite). The change in level is proposed to calm traffic entering the square Road access to the residential parcel north west of the B00 Use of simple material to help define the square Clipped hedgerows and / or ornamental trees provide enclosure and a greater sense of intimacy for the core space Core space within the square providing seating for quieter contemplation and enjoyment of a visually rich urban square constructed using high quality natural materials Access to Northstowe from B00 road junction providing primary access to the local centre Lighting strategy in this square should be integrated with the lighting design and lighting columns used on B00 and is subject to agreement with SCDC Figure. - Illustrative sketch design

7 0 PUBLIC REALM PUBLIC REALM 0 Principal square JUNCTION DETAIL - north south - primary street (OPTION ) Principal square JUNCTION DETAIL - north south - primary street (OPTION ) Marker residential building Marker residential building Section of primary street leading to the employment area and development to the north of the dedicated busway Section of primary street leading to development to the south of the dedicated busway Lower order street providing local access to the primary school Potential location for feature object / monument / public art Section of primary street leading to the employment area and development to the north of the dedicated busway Section of primary street leading to development to the south of the dedicated busway Lower order street providing local access to the primary school Potential location for feature object / monument / public art Strategic cycle / commuter route Specimen tree planting to provide soft appreance to the square Strategic cycle / commuter route Specimen tree planting to provide soft appreance to the square Softer appearance in and around the square should be created through use of low planting and hedging Potential location for MUA Figure. - Illustrative sketch design Figure. -Illustrative sketch design 00 0

8 0 PUBLIC REALM PUBLIC REALM 0 Principal square DETAIL - primary school drop off square PLAY AREA ILLUSTRATIVE DETAIL - Square on primary street comprising LEAP Primary school building Shared surface Dedicated busway East-west primary street Drop off parking LEAP Vehicle turning area Community gardens Staff vehicle access and parking Cycleway Pedestrian / cycle crossing Secondary / tertiary street Opportunity for regular and continuous frontages Potential location for a future bus stop 0 Shared surface area to calm bus traffic with mix of hard and soft landscaping 0 Meeting point should be provided at a suitable location in traffic free area Staff parking Figure. Illustrative sketch design Figure. Illustrative sketch design 0 0

9 0 PUBLIC REALM PUBLIC REALM 0 Secondary square JUNCTION DETAIL - Primary street - dedicated busway Secondary square JUNCTION DETAIL - primary streets.m wide carriageway - dedicated busway Shared surface East west primary street Flushed kerb or shallowly laid kerb on face to define extent of vehicle route Pedestrian / cycle crossing points Where possible specimen trees should be planted as traffic calming measure Visual splay lines for the signalised traffic junction between the dedicated busway and the east west primary street Narrowing the carriageway through central reservation will help reduce the traffic speed 0 Central green verge providing softer appearance and an opportunity to create visual interest through seasonal shrubs and ground cover planting Strategic cycle / commuter route along the dedicated busway Strategic cycle / commuter route along the primary street Primary street carriageway Soft edge to public private frontage with low hedging or shrub planting 0 Footpath along dedicated busway 0 Footpath along primary street Figure. Illustrative sketch design Figure. Illustrative sketch design 0 0

10 0 PUBLIC REALM PUBLIC REALM 0. Materials REF Public realm material palette MATERIAL AND ELEMENT BUSWAY PRIMARY / SECONDARY STREET TERTIARY STREET PUBLIC SQUARES BICYCLE PATH / PEDESTRIAN LINKS Street furniture LIHTIN COLUMNS FEATURE LIHTIN MANHOLE COVERS M Silver grey granite aggregate concrete paving M Silver grey block paving M High quality black street lights will be used, they must be designed in accordance with the relevant British Standard Opportunity to use surface mounted lights or street furniture integrated with lighting in the local centre and principal squares should be exlpored i.e. lighting bollards, illuminated seating or integratd with street signage The utility covers within paved areas must be aligned with the coursing, have recessed covers through which the surface material and pattern continues. Plastic/ cement covers are not acceptable M Asphalt with silver grey granite chippings BOLLARDS SEATIN SEATIN M rey concrete block. Marshalls Tegula paving or similar M M Drainage channel - Silver grey kerb laid horizontally Hardwood timber bollards (0 x 0mm square section and -way weathered), for squares (shared space) and along swales FSC timber and stainless steel seat - Util, Factory Furniture (or similar approved) FSC timber and stainless steel seat - Woodbloc, Factory Furniture (or similar approved) M Tactile paving (concrete / grey) - for use only at road junctions into site CYCLE STANDS TREE PITS LITTER BINS M Roadways - asphalt with exposed granite aggregate chippings (light grey) M M M Pavements - as above except increased proportion of aggregate chipping - specification to be agreed at detail stage Kerb - silver grey kerb or similar approved (Silver grey textured kerb in key public open space) M Brushed stainless steel Sheffield cycle stands SINAE High quality tree pits shall be used that provide sufficient growing for medium and large trees SINAE Black public bins - Bailey Omos range BS00 (or similar approved) PUBLIC ART Table. - Materials M M M M M round mounted black street signs must be consistent through the development To minimise the street clutter opportunity for public art for street signage and way finding should be investigated Bespoke furniture that is integral to the public realm is encouraged and could be developed in tandem with public arts and community engagement 0 0

11 For more information visit Lead consultant Terence O Rourke 00 enquiries@torltd.co.uk Designed and produced by Terence O Rourke 0