60 likes | 223 Views
STAIRCASE RESTRICTIONS. The area available can be restricted by the: position of walls dimensions of the available space location of access doorways to rooms height between floor levels. DOGLEGGED STAIRS. You can use a dog legged stair in areas which have:
E N D
STAIRCASERESTRICTIONS The area available can be restricted by the: position of walls dimensions of the available space location of access doorways to rooms height between floor levels.
DOGLEGGED STAIRS • You can use a dog legged stair in areas which have: • a minimum length of floor space (total going) • sufficient width for two stair flights. • You would use a half space landing when installing a dog legged stair. Doorway restrictions Restricted width
STRAIGHT FLIGHT Landings are sometimes needed in long flights of stairs Straight flight stair You can use a straight flight stair in areas with: a large length of floor space at ground floor level (going) or minimum width for only one stair flight. You would install a landing when the No rises exceeds18.
OPEN NEWEL STAIR WITH QUARTER SPACED LANDING USE • a minimum amount of floor space at both levels • minimum width for both flights.
REGULATIONS COVERING DIMENSIONS OF STAIR DESIGN • The Building Code of Australia • Australian Standard AS1657-1992-Fixed platforms etc. • These provide the standard regulations for the dimensional requirements including: • maximum and minimum rise and going of each step • maximum space between tread surfaces on an open stair • minimum handrail heights on stairflights and landings • maximum gaps between balusters on balustrade • minimum vertical clearance – headroom • minimum clearance from stair landings to adjacent doors. • You should make sure your specifications and drawings meet these minimums and maximums when you design stairs.