ASCE Building Classification

[Slaze]

[tt][/tt]
I am having trouble classifying a proposed covered porch, attached to an existing house, as enclosed, partially enclosed, or open. The porch is 8'-8" X 30'-0" with a hip roof. One 8'-8" side is the common wall of the existing house with no openings, the other 8'-8" side is a masonry wall with no openings. The first 30' side is 96 percent open - only has a column at midspan. The other 30' side is a masonry wall with 56 percent open. It seems by definition default it would be enclosed but that does not make sense to me. Thanks for the help!

 

[steellion]

I really wish ASCE would change the names of their definitions. Even though it doesn't make sense, if your structure does not meet requirements for a "partially enclosured" or "open" structure, it is "enclosed" by definition. Generally, a structure with large openings on two sides is enclosed. Just think about if the wind can be "trapped" inside a building, leading to increased internal pressures to be considered "partially enclosed". Most structures will be considered enclosed.