Road Layouts
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Transcript of Road Layouts
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ROAD LAYOUTS
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GRIDIRON: Site is divided into square or rectangularblocks.
Advantages: Blocks and services are easy to layout.Disadvantages: Causes traffic congestion due to thefrequent crossings created.
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M ANHATTAN
Gridiron street pattern imposedon the landscape without paying attention to the topography.
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RADIAL: Used to connect the center of the
city to the outskirts in a ripple manner.
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B ARON HAUSS M ANS PARISB OULEVARDS
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M ETROM ANILA ROADM AP
Combination half-circumferentialand radial roads.
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MEANDERING: Used in highly mountainoussites. Following the contours of thetopography.
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M EDIEVAL TOWNS
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COMBINATION: Using both the geometric andmeandering street patterns. Geometricstreet pattern is used where the terrain is flatand meandering where the terrain is rolling.
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MODIFIED GRIDS:Advantage: Easy and direct manner as well as the easyinstallation of services following the grids of the streets.Disadvantage: Its relative monotony.
TYPICALGRID
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MODIFIED GRID: Central Loop
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MODIFIED GRID: Outside Loop
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CUL-DE-SAC: Shaped so that the fronting housesautomatically create an enclosed space.
Should not be longer than 500mA long version is considered a straight street
with a turnaroundUtilizes an odd parcel of land to full advantage
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C UL-DE-SA C
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C UL-DE-SA C
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LOOPS: Good opportunities exist for varied andinteresting house groups on lots flanking loopedstreets.Disadvantage: Narrowness of certain lot frontages
esp. along the curvature of the loop.
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STREET
C LASSIFI C ATION
Major Roads - Major arterials,highways, bi-ways,expressways, super-highways,freeways, motorways,
autobahns, etc.
Secondary Roads - Minorarterial, avenue, boulevard,etc.
Collector Streets - Maininterior streets
Local Streets - Local service
streets
Cul-de-sac - Dead-ends, turnaround, T junction, Y junction,hammer, loop
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DEAD-ENDS
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C APA C ITY & C HARA C TER
Capacity refers to the no. of vehicles that canmove safely through a segment within a giventime.
No. of lanes and their widths, curb radius, superelevation of the pavement
Character refers to its suitability for pedestrian
activities and a variety of bldg. types Associated bldgs., frontage, and landscape types,
and sidewalk width
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A long-distance,medium speed
vehicular corridor thattraverses opencountry.
It should be relativelyfree of intersections,driveways andadjacent buildings;
otherwise it becomesa strip, whichinterferes with trafficflow.
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AUTO B AHN, GER M ANY
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A long-distance,medium speedvehicular corridorthat traverses anurbanized area.
It is usually lined byparallel parking,wide sidewalks, orside mediansplanted with trees.Buildings uniformlyline the edges.
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B OULEVARDS
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C HA M PS ELYSEE, PARIS
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A short-distance,medium speedconnector thattraverses an urbanarea. Unlike aboulevard, its axis isterminated by a civicbuilding ormonument.
An avenue may beconceived as anextremely elongatedsquare .
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WASHINGTON D. C .
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Q UEZON AVENUE
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An edge bet. An urbanand a naturalcondition, usuallyalong a waterfront,park or promontory.One side of the drivehas the urbancharacter of aboulevard, withsidewalk andbuildings, while theother has the qualitiesof a parkway, withnaturalistic planting and rural detailing.
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LAKESHORE DRIVE, C HIC AGO
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STREETA small-scale, low speedlocal connector. Streetsprovide frontage for high-density buildings such asoffices, shops, apartmentbuildings and rowhouses.
A street is urban incharacter, with raisedcurbs, closed drainage,wide sidewalks, parallelparking, trees in individualplanting areas, and bldgs.aligned on short setbacks.
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RURAL ROADSA small-scale, lowspeed connector.Roads provide frontagefor low-density bldgs.Such as houses.It tends to be rural incharacter with opencurbs.
The rural road has nocurbs and is lined bypathways, irregular treeplanting, anduncoordinated bldg.setbacks.
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ALLEYS
A narrow access routeservicing the rear of thebuildings on a street.Alleys have no sidewalks,
landscaping, or building setbacks.
They are usually paved totheir edges, with centerdrainage via an invertedcrown.
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LANE
A narrow access routebehind houses on aroad.
Lanes are rural incharacter with anarrow strip of paving
at the center or nopaving.
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PASSAGE
A very narrow, pedestrian-only connector cutting between buildings.
It provides shortcutsthrough long blocks orconnect rear parking areas with streetfrontages.
It may be roofed over andlined by shopfronts.
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PATH
A very narrowpedestrian andbicycleconnectortraversing apark or the open
country.
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PARKING
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TYPI C AL PARKING LAYOUT
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TYPI C AL PARKING FOR B UILDING
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TYPI C AL PARKING FOR B UILDING
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TYPI C AL PARKING FOR B UILDING
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TYPI C AL PARKING FOR B UILDING
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TYPI C AL PARKING FOR B UILDING
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TYPI C AL PARKING FOR B UILDING
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TYPI C AL PARKING FOR B UILDING
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TYPI C AL PARKING FOR B UILDING