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  1. stevenl

    Hydronic floor heating: Onix vs Pex, other recommendations

    Thanks, Good advice. PEX is code approved and has a longer track record. Onix is not specifically code approved from what I can see, though the ICC report on Onix looked o.k.. I will ICC call about possible updates. I did speak with a mechanical engineer. He was not aware of issues with either...
  2. stevenl

    Hydronic floor heating: Onix vs Pex, other recommendations

    We have to replace 2 floors of Entran 2 staple-up, 1,00 sqft each, in our office bldg. To make this easier we will switch the upper level to hot water baseboard, and the lower will again be radiant hose attached to the floor ply. Thankfully its a generous 5-6' crawl space. But my choice of Onix...
  3. stevenl

    achieving more dead load for expansive clays

    You guys are a great help. The owner, a young architect, is savy to his slab and soil issues. There are NO interior pads, the fnd is a very simple, inherently rigid, "L" shape. The fnd is 50% 9' conc walls, 25% 6' walls and 25% 4' walls. The slab level will have maybe 3 slip jointed walls, all...
  4. stevenl

    achieving more dead load for expansive clays

    Thanks! The site is by Steamboat Lake, north of Steamboat Springs, CO. Soils-"Clays:slightly sandy to sandy with occasional gravels, moderately stif to very stiff, moist and brown to gray in color". Swell-consolidation and gradation testing done (CH class). Soils engineer called back to approve...
  5. stevenl

    achieving more dead load for expansive clays

    I have 1700 min, 3500 max soil parameters. Since its a smaller home, and I typically apply structural fills (piers would require drill rigs driving from 4 hours away). We have a crazy market this year, and the str. fills are bid to cost more than the foundation! I can meet the parameters...
  6. stevenl

    New Door Entrance in Existing Building

    If the immediate interior is heated, I agree with insulating as a possible solution. Truly granular material which extends from your footings and well beyond frost depth may reduce frost heave potential. Silts or clays which are less permeable will "perch" a melt for subsequent freezing in...
  7. stevenl

    1967 building, Used "Molenco" "Steel Rib" joists - ?

    Hi, I've got a remodel on this 1967 steel building. The joists are "Molenco" "Steel Ribs" with plan callouts of 800J18PUN and 600CS18PUN. Came through "Steel Structures of Colorado", in Englewood, Colorado - now defunct. The only result I get searching "Molenco" today is an Architectural...
  8. stevenl

    shoring / lintel information required re extending opening

    If you have some wall height left above the opening, I have used a pair of opposing steel angles, each inserted into a horizontal cut to the masonry joint. In my application the angles (sized for DL) were retained and welded to the new lintel, reducing the lintel's size. My first post, trust it...

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