ASSEMBLIES - CORE Flashcards
Escalators Crisscross spiral arrangement
u-turn at exit, reduces travel time, requires total width of 2 escalators
Escalators Crisscross walk around arrangemen
all the up escalators above each other and all the down escalator so above each other. Lengthens trip, used in retail stores passing by more merchandise
Escalators parallel spiral arrangement
requires total width of four escalators
Escalators stacked parallel arrangement
WALKAROUND, BUT WIDTH OF 4 escalators
Minimum width of stair
36 inches, or 44 when occupant load exceeds 49
stair tread-riser ratio
2R + T = 25 OR 26
stair - Maximum vertical distance between landings
12 feet
tile Class according to abrasion resistance Group I
Group I - light residential
tile Class according to abrasion resistance Group II
Group II - moderate residential
tile Class according to abrasion resistance Group III
Group III - maximum residential
tile Class according to abrasion resistance Group IV
Group IV - highest abrasion - commercial