stairs/ramps Flashcards
(8 cards)
Case - Teotihuacan, Mexico
100 BC-250AD
Up to 248 stairs on each side
Ancient Aztec use
Connection to the sky + elevation, views - psychological and spiritual meaning
Considerations of designing stairs (8)
Access/inclusion
Available space
Views
Safety
Aesthetics and design
Materials
Lighting + visibility
Budget and cost
Riser height range (other than spiral)
115 - 190 mm
Treat/going width range (not spiral)
240 - 355 mm
Slope relationship (not spiral)
550-700 mm
Blondel formula
(2R + T) = 630 - 650 mm
Key considerations/requirements for designing staircases
(6)
<18 risers between landings
Slope between 20-45 degrees
Headroom min. 2m
Consistent riser + tread
Balustrades for stairs over 1m high
Handrails for >=4 risers
Stairways minimum 600mm wide
Ramps
height:length standards
> 1900mm long
1:14
<1900mm long
1:10
