temporary support of patio
temporary support of patio
(OP)
I would like to enclose my rear patio which also supports a second story walk out deck with roof. It is a timber framed structure with 8x8 timber columns supporting 4x8 beams. The whole thing is supported by a concrete patio slab. I need to pour a thicker slab to keep drainage from my back yard from ponding up on the patio. My dilemma is how to support the second story so that I can cut off the bottom of the existing columns, form and then pour the concrete. I was thinking of using temporary steel pipe columns, the concrete would be poured around the pipes and after it cured, they could be cut off flush and grouted and support returned to the shortened wood columns. Does this sound reasonable?






RE: temporary support of patio
1. Place new pads inboard of existing, replace posts, replace slab
2. Build up a new temporary beam extending past the slab on both sides, temporarily support beam, replace slab, replace posts
3. leave post in place, place concrete around post
4. Thicken slab in sections, placing temp posts on new section while posts are moved
RE: temporary support of patio
http://www.geocities.com/cvgopp/patio.html
RE: temporary support of patio
Of course, you could replace the columns one at a time, cutting them to height and placing them on the precast deck pedastals commonly sold at home centers and later pour the thickened slab over your existing slab. How thick are you going and does the thickened slab need to be structural?
daniel
RE: temporary support of patio
RE: temporary support of patio
RE: temporary support of patio
RE: temporary support of patio
If you are framing in the structure just remove the posts and frame with 2x4s.
RE: temporary support of patio
Will you need assistance to calculate the capacity of the 4x4 or other member to prop it with? If so, you may want to look to rental shoring with known values, or go to the Ellis Shore page and use their published values. I would not think the 8x8 post is seeing a load which requires it to be 8x8, but having not see the situation, i do not know. Use your good judgement.
The least risk probably involves removing the columns one at a time and pouring in the area or putting them on blocks. The way I would go would be with the angles supports. Before I even considered growing up to be an engineer, my dad supported our 100 year old porch with a series of braced 4x4 frames so he could remove and repair the built up columns supporting the porch roof/second story.
Anyway, use good judgement, and call someone local if you feel your next move will get you in over your head.
Daniel