Every landing shall have a minimum dimension of 36 inches 914 mm measured in the direction of travel.
Door at top of stairs code.
Summary of code requirements for residential stairs.
Most stair doors must allow free egress from the non stair side at all times and if there is a need to limit egress the two options would be delayed egress hardware which delays egress for 15 seconds or an alarm to discourage use of the door.
The height of floors at exterior doors other than the exit door required by section r311 4 1 shall not be more than 73 4 inches 186 mm lower than the top of the threshold.
The landing shall be at least as wide as the treads and shall measure at least 3 feet in the direction of travel.
Minimum 36 inch clear width for stairway.
So this basically sums up the basic code requirements for residential stairs and their dimensions.
The width of each landing shall not be less than the door served.
Except as provided in subds.
Application this section covers all stairways including standard spiral ship and alternating tread type stairs except for articulated stairs stairs that change pitch due to change in height at the point of attachment such as those serving floating roof tanks stairs on scaffolds stairs designed into machines or equipment and stairs on self propelled motorized equipment.
A level landing shall be provided at the top and base of every stairs except as provided in par.
British columbia building code 2018 division b b at the top and bottom of every ramp with a slope greater than 1 in 50 c where a doorway opens onto a stair or ramp d where a ramp opens onto a stair and e where a stair opens onto a ramp.
A 36 landing is required at the top and bottom of a stair with a door at either where it does not swing into the stairs per both irc 311 5 4x and ubc 1003 3 1 6.
C doors at landings.
Landings must have a width and a dimension measured in the direction of travel not less than the width of the stairway.
2 where a door at the top of a stair within a dwelling unit swings away from the stair no landing is.
Doors in the fully open position shall not reduce a required dimension by more than 7 inches.