Garden Stairs Maximum Rise
For stairs that land on the ground the total rise is the distance from the ground to the top of the finished floor.
Garden stairs maximum rise. Minimum 215mm maximum 355mm The going shall be not greater than the tread depth TD plus a maximum gap of 30 mm between the rear edge of one tread and the nosing of the tread above. It appears the building code does not address exterior site stairs that are not attached to the building. In general the smaller the rise the bigger the tread.
When working out the width of the steps keep in mind that the bricks for each riser will be built on to the step below except the bottom step of course which will need a small foundation. Our stair stringers range from 1-17 treads steps and are made for standard rise and going and work on a 1000mm between centres of the stringers. Measures should be taken to preventing a person from falling more than 36 risers this can be done by a barrier or a landing 2m in length or a change in direction of the stairway of 90.
Min Rise mm 150 mm Max Rise mm 170 mm Min Going mm 250 mm Max Going mm 400 mm. It Slope Relationship is actually 2RG 550mm min and 700mm max BCA but to keep to that is being a bit pedantic for garden steps. D1AS1 allows a common stairway to have open risers as long as the gaps are not large enough for a 100 mm diameter sphere to pass through.
According to International Building Code IBC the maximum riser height is 7-34. If the threshold is more than 190mm above the adjoining surface it must incorporate steps having riser and going as per the specs above. Then check the sizes against the 2RG between 550 and 700mm formula.
Use a framing square to trace the stair pattern on your stringer board. General Access Stairs. You can choose whats comfortable for you but generally outdoor steps have a rise of 5 ½ to 7 inches and.
You should measure riser heights vertically between the leading edges of two consecutive steps. This method of construction can be developed to construct wider steps when needed or multiple steps for where a larger rise needs to be accommodated. Adjacent flights shall be connected using a landing.