ejb said:
It is a woodboiler and total weight with water is estimated at 1500lbs. Tell me how to frame it for 2000lbs and I'll be even happier. 2x4 is the footprint of the boiler. I will raise in off the floor for ease of use - 8" is recommended.
I'll load it in with my tractor before the roof and walls are on - that shouldn't be a problem.
The simply, easy answer would to be for you to add another pier under the location of the boiler. With such a small footprint, the weight is concentrated at one location. If it's next to a wall, it's easy, if it's in the middle of a span, then larger lumber is needed. The weight isn't such a big deal, for the price of the larger lumber, you can just buy some sacks of ready mix concrete and pour a solit footing.
With the building being 12 feet wide, I would go with 2x10's, 12 ft long, bolted to both sides of your piers for your beams. Then I would run 2x6's on 16 inch centers for your floor joists. Depending on the floor height requirments, I'd use joist hangers for the 2x6's and block between the 2x10's.
Then cover with 3/4 T&G plywood using liquid nails and screws to hold it down.
If you wanted to support the weight of the boiler with just the lumber, I would just use 2x12's for the floor joists on either side of the location the boiler is going to be located and attach them to 2x12 floor beams. The load will be on those 2x12 and the price of upgrading to the larger lumber in that area would be minimal. If the boiler is centered on one of the floor joists, I'd use three 2x10 floor josts for support. It's overkill, but you will never have to worry about it and the extra money you spend is probably under $50 compared to going with the minimums.
Eddie
