VOLUME 1 HUMAN SETTLEMENT PLANNING AND ... - CSIR

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GUIDELINES FOR HUMAN SETTLEMENT PLANNING AND DESIGNTable 5.3.13: Dimensions and distancesMixed-mode streets (continued)Travelling distances. • Human scale is lostwith a linkage longerthan 1 500 m(maximum distanceto establish vista).Ramps and stairs. • Clear space of rampsshould not benarrower than 1,2 m,allowing a person in awheelchair to passanother person.Ramps should havecontinuous handrailsand should form anintegral part of thedesign of thebuilding, not merelybe an add-on. 1• Ramps can have aslope of between 5%(1:20) and 8% (1:12).• For continuouswalkways, cross-slopesof 1:12 should beavoided, with apreferred slope of1:16.• Stairs should beavoided where largevolumes of foot trafficmust beaccommodated. Onstairs, a railing shouldbe provided on atleast one side with aheight of at least 450mm (Untermann1984, pp 29, 41).46Chapter 5.3Hard open spaces
GUIDELINES FOR HUMAN SETTLEMENT PLANNING AND DESIGNTable 5.3.13: Dimensions and distances (continued)Mixed-mode streets (continued)Ramps and stairs(continued).• On stairways, the risein height should notexceed 165 mm. 1,1 mis recommended as aminimum stairwaywidth to allowpassing in theopposite direction.The ideal proportionsfor outside steps aredetermined by theindicated formula. 2For long slopes, alevel rest-platformshould be installed ata maximum distanceof every 20 treads.This platform shouldbe long enough for aperson to walk threepaces, which isapproximately 1,8 m.Sidewalk widths. • With walking onsidewalks, the widthis a crucial dimension,since passing ispossible only whenthere is enoughwidth to pass easily(Untermann 1984,pp 25-28).Recommended widthfor sidewalks inmixed usedevelopment is 3,5 mto 4,5 m, clear of anystreet furniture(Cartwright 1980,p 42).Public furniture andlandscaping.• The minimum heightfor signs overpavements should beno less than 2,1 m(Cartwright 1980,p 99). 3• Planters, kerbs, railsand other raisedsurfaces can be usedfor seating. Anyheight up to 600 mmwill work, with400 mm being thebest. A width of atleast 160 mm isappropriate.Hard open spaces Chapter 5.347
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G u i d e l i n e s f o rHUMAN SETT
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GUIDELINES FOR HUMAN SETTLEMENT PLA
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IndexVolume 1Volume 2Chapter 1Chapt
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Chapter 2A framework forsettlement-
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Chapter 4Planning method andpartici
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Movement networksChapter 5.15.1
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Chapter 5.25.2Public transport
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Chapter 5.7Public utilities5.7
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Chapter 5.8.2Ecologically sound urb
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VOLUME 1 HUMAN SETTLEMENT PLANNING AND ... - CSIR

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