Arrange the shingles so the ends and the tab notches do not lie directly above gaps in the shingle below.
Stairway with own roof.
In buildings without an occupied roof access to the roof shall be permitted to be a roof hatch or trap door not less than 16 square feet 1 5 m 2 in area and having a minimum dimension of 2 feet 610 mm.
Where a stairway is provided to a roof access to the roof shall be provided through a penthouse complying with section 1510 2.
It would be from the common hall to the roof.
There is no living space on the roof only mechanicals and bulkheads.
If you d prefer to make your own sketch out a plan so that your staircase has a minimum diameter of 26 inches and treads that are at least 7 5 inches deep.
Make sure the planned stairs are all the same height and depth and that the stair height and width conform to local building codes.
In buildings four or more stories above grade plane one stairway shall extend to the roof surface unless the roof has a slope steeper than four units vertical in 12 units horizontal 33 percent slope.
In buildings four or more stories or more than 40 feet 12 192 mm in height above grade one stairway shall extend to the roof surface through a stairway bulkhead complying with section 1509 2 unless the roof has a slope steeper than 20 degrees 0 35 rad.
Needs to go up aprox.
Measure the height of the area where you will install the stairs.
The penthouse occupies the 6th and 7th floor and have their own interior stairs for roof floor change access.
When you re ready to build you ll need to cut some steel pipe for your center column and then anchor it in place with a wood or steel plate.
This is also called the total rise.
If you don t plan to make the top step level with the area where the stairs begin be sure to account for this gap in your measurement.
Use metal or asphalt roofing for a more conventional roof and cedar shingles for a more custom look.
In buildings without an occupied roof access to the roof from the top story shall be permitted to be by an alternating tread device.
If the gaps lined up water could get directly onto the roof sheathing and then seep in through a nail hole.
For example if you are building stairs to go up to a deck and you measure 3 feet 0 91 m from the ground to the top of the deck then this is the total rise.
Install shingles from the lower left corner working to the right and also working up the roof slope.
Use these measurements to determine the length of the stringers supports and the distance from the house to the base of the stringers.
I forgot to clarify that the penthouses are duplex s with deeded roof decks.
Access to setback roof areas may be through a door or window opening to the roof.