Replies

1. 
   Guest_ | Feb 13, 2000 09:30am | #1

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   This may be a dumb question, but can someone shed light on the problem? I have a post supporting a glulam (which supports about 2000lb load (.5x(10'x6'x65psf)). It is resting on the sill plate which rests on a rimjoist. However, the rim joist is cantelivered out about 2' from the foundation. Do I need to pour a footing and a pier to support the base of the post holding the glulam, or can the rim joist support it? How big and deep a footing/pier do I need if I do need one?

   Thanks

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   Guest_ | Feb 13, 2000 10:19am | #2

   *Andrew,I would say you need some direct support under it, particularly because of the 2' cantilever. If it was 1' or less I'd say you could get away with it. The pier wouldn't have to be massive, probably 6" to 8" would be OK and just below the frostline, 42" around here. It would be a good idea to put some hangers on the joists near this post whether you put the pier in or not. I would also add some blocking between the joists at the rim joist and at the supporting beam 2' back. JMO with nothing in writing to back it up.Red dog

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   Guest_ | Feb 13, 2000 05:17pm | #3

   *Andrew,2,000lbs. is not a large point load, however; this question should be addressed to an engineer. He will need to know the depth, spacing, species, grade, length and termination of the floor joists in the cantelivered section. There may be other considerations, but armed with this information, I can think of a few possibilities.1. It's OK the way it is.2. Post to the ground on a suitable footing. 3. Replace the rim with a beam and two posts to the ground as above (used if post location in #2 is unsuitable).4. Canteliver a beam over the foundation (same direction as floor joists) to accept the load from the post above.If you're concerned about this post load you should see an engineer. Good luck.Jerry

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   Guest_ | Feb 13, 2000 06:48pm | #4

   *My first thought is whoever drew your prints should have thought of this. Second, whomever designed your floor and/or roof system should have thought of this. This is pretty basic stuff to catch during the estimating/construction phase of things. But, since it didn't happen that way, I would say Jerry came up woith the best solution in #4. Go back to your building designer and have them size a beam for you. I would definitely b notleave it "as is".

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   Guest_ | Feb 17, 2000 11:33am | #5

   *My understanding is that a cantilever can support a load-bearing wall if it does not extend out more then the depth of the joists. Two feet most likely exceeds this limit.Safest bet? Have an engineer stamp the plans. Small cost upfront for solving what could be a big problem.Several years back a local builder extended the walls out 2' past the foundation on a two story house. It was a change worked out between himself and the homeowner and not approved by the inspector. Inspector showed up when they were framing the second floor walls. Instant stop work order. He then gave them the option of supporting the cantilever or bringing the wall back in over the foundation, with the support option plan approved by an engineer. They did some fairly ugly post work to support the cantilever.

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   Guest_ | Feb 17, 2000 12:59pm | #6

   *I should clarify that this was discovered during a kitchen remodel and I'm just trying to figure out if this is structurally sound. It seems that a lot of houses in this area were contructed with this cantilevered section. In fact it is so common that the city has actually addressed it in the prescriptive seismic retrofitting plans they put out. To me it seems counter-intuitive not to frame a load bearing wall to the foundation, but to instead cantilever it out a couple feet. The floor joists, btw, are rough 2x8s, rock hard damn-near VG fir.I suppose a new foundation all along the house would solve the problem. But I'm only doing the kitchen...