Venting the bulkhead in different occupancies?
First off I am from a dept that doesn't regularly respond to fires in multiple dwellings/tax payers; when we do, going to the roof isn't typically a high priority unless the fire is in the top floor or cockloft. With that being said I am interested in how other depts handle venting vertically in different occupancies.
-First, in a multiple dwelling when do you open the bulkhead door/take the skylight above the stairway?
-Do you open the bulkhead up on fires when the fire is on a floor below the top floor?
-Do you wait until a hose line is in place on the fire before opening the bulkhead?
-If you do vent the stairway on fires below the top floor do you worry about the fire spreading into that stairway?
-Which stairway would you typically use to vertically vent the Attack stairway?
-When venting a multiple Dwelling do you make multiple openings bulkhead/scuttle hatches/cut holes? I was under the impression that you only want one hole in the roof to prevent the lateral spread of the fire but I have found some sources that talk about making multiple openings?
-Do you typically preform vertical ventilation in tax payers or flat roofed row houses when the fire isn't on the top floor, again, do you worry about the fire spreading or is preventing the mushrooming more important then fire spreading vertically?
Thanks for the help.