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Under-Stair Storage
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Re: Under-Stair Storage By  InspectorDude

Posts: 0

12/20/2000 4:15:00 PM

If the building referred to is not more than 3 stories, the exit enclosure for the stairs must be minimum 1-hr construction. If the building is 4 or more stories, the enclosure must be 2-hr, and any enclosed space or open storage MAY NOT be under the stairway, per section 1005.3.3.6. You may not enclose space beneath the stairway, and unenclosed space may not be used for ANY purpose. By constructing a 1 or 2 hr soffit under the stairs, you cannot determine it is not in the exit enclosure. The first sentence of 1005.3.3.6 precludes that scenario. Section 1006.3.3.2 only applies to EXTERIOR exit stairs, and prohibits using the space under the stairs for storage, or enclosing it for ANY purpose. Lastly, section 1003.3.3.3.9 is a general requirement for stairs that do not require an enclosure, and simply requires that any space under stairs be protected by 1-hr construction, even in S.F.D.''s.

[This message has been edited by InspectorDude (edited 12-20-2000).]


   

Re: Under-Stair Storage By  RFire

Posts: 0

12/21/2000 5:37:00 AM

My take exactly. This is a bit of a sticky wicket, in that my jurisdiction (a large University) is involved in a joint project with the local municipality. Their code officials seem to be taking a considerably more leniant view approach to plan review. Thank you for your point of view, as I will now feel much better about being the hard guy....


   

Re: Under-Stair Storage By  RMP

Posts: 0

1/22/2001 1:39:00 PM

Not sure about intent of no use of space below stairs (1005.3.3.6) If I seperate the stair from the adjacent areas with 2-hr. construction; have I not met 1005.3.3.2(3)?


   

Re: Under-Stair Storage By  Don Wilkins

Posts: 0

1/22/2001 2:07:00 PM

RFire,

Is their attitude typical for all projects or is it only for City/University owned projects (I''m assuming). See, in my jurisdiction we also inspect county owned facilities and in order to appear above board we are harder on ourselves then we would be on a privately owned building. The reason is simple: we don''t want to appear to be playing favorites. Because we if were, our local contractors would call us on it. PLUS, I never realized that the requirements of the UBC were applied differently for different people. We strave for consistancy in our administration of the construction codes. We are not perfect BUT we never play favorites with life safety. Sorry for the rant ...but it felt good.

Thanks,
Don Wilkins


   

Re: Under-Stair Storage By  pheinzen

Posts: 0

1/29/2001 6:57:00 AM

Does anyone know if the space under a non-enclosed exit stairway, on the interior of a building of only two story''s, is usable?


   

Re: Under-Stair Storage By  Carl

Posts: 0

1/29/2001 7:11:00 AM

Phein,
short of daily inspections how would you control that?
look for bigger fish.


   

Re: Under-Stair Storage By  pheinzen

Posts: 0

1/29/2001 8:04:00 AM

Easy. It''s in a Hotel and the owner want''s to know if he can use that space for non-flammable item''s. I would like to know also for the fact that I cannot find it in the U.B.C. because the book only refer''s to enclosed exit''s with spaces under the stairway''s.


   

Re: Under-Stair Storage By  pheinzen

Posts: 0

1/29/2001 8:14:00 AM

RFire,
Look under 1006.3.3.2 again and I think that you will find that it say''s and I quote "There shall be no ENCLOSED usable space under EXTERIOR exit stairway''s. The open space under SUCH stairway''s shall not be used for any purpose." So I believe they are only talking about exterior exit stairway''s that are trying to be enclosed.


   

Re: Under-Stair Storage By  alovinescu

Posts: 0

1/29/2001 11:04:00 AM

"Although Section 1005.3.3.6 prohibits the use of enclosed usable space under stairs INSIDE an exit enclosure, such space is permitted to be used where such enclosed space occurs under a stairway NOT WITHIN an exit enclosure as required by section 1005.3.3.1. However, when the space is used, it is necessary that the walls, soffits and ceilings of the enclosed space be protected on the enclosed side with materials that would be used for the fire resistive construction required". (1997 UBC Handbook p189).


   

Re: Under-Stair Storage By  RMP

Posts: 0

2/2/2001 9:11:00 AM

Looking at 1005.3.3.6 in the UBC illustrative commentary handbook addresses this issue more clearly, I beleive. The Fig.1005-1 is representative of the issues we have been talking about. Bearing in mind that we are referring to an interior stair and space outside the exit enclosure.


   

Re: Under-Stair Storage By  paulo

Posts: 0

2/9/2001 11:46:00 AM

September-October 2000 Buildingstandards magazine''s "code corner" (pg. 26) discussed this issue. The last sentence of the "answer" states "Also, Section 1210.1 of the Uniform Fire Code prohibits storage under exit stairways."


   

Re: Under-Stair Storage By  CR

Posts: 0

2/21/2001 3:16:00 PM

1997 Uniform Fire Code section 1210.3 also gives an Exception: Storage is allowed under interior or exterior stairways when such stairways are not within exit enclosures and such spaces are protected on the enclosed side by one-hour fire-resistive construction as specified in the Building Code.


   

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