Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. campbelltc

    Building insulation at slab.

    Late to the party on this thread, but has anyone dealt with ASCE 32 and it's coordination with the energy code (IECC 2018)? Energy code tells me we have to go down 24" with perimeter insulation for an unheated slab (Zone 5). Can that insulation go to horizontal at some point so we only have to...
  2. campbelltc

    Radiant Heated Floor Slab

    Thanks for the input. Yes. We would have poly under the slab.
  3. campbelltc

    Radiant Heated Floor Slab

    Pavement calculator said 8.5 inches of unreinforced concrete, but it's on fill. Even with good inspection, I'm leery of using unreinforced concrete, even with closely spaced joints. Thanks for the reply.
  4. campbelltc

    Radiant Heated Floor Slab

    This one isn't huge. 120' x 100' at a regional (county) airport. Sealing the joints. The tubing will also be 5" below top of slab.
  5. campbelltc

    Radiant Heated Floor Slab

    I believe it was purely constructability. Thanks for the reply.
  6. campbelltc

    Radiant Heated Floor Slab

    We're designing a floor slab for an airport hanger where the concrete slab on grade has radiant floor heat in the slab. The pipes for the heat are supposed to be in the top 5" of the slab. The design software for concrete pavement tells us that it needs to be 8.5" thick, so we went with a 10"...
  7. campbelltc

    Holes in a roof beam. What is the purpose?

    I have a couple of questions here: 1. I know in the days of cheap fabrication, castellation was used to save on material cost. With the cost of fabrication these days, might this just be holes cut in a beam instead of castellation? I can't see the picture well enough to see if the web is...
  8. campbelltc

    PEMB Foundation design with hairpins

    For smaller buildings on shallow spread footings with decent bearing capacity, I just design the piers and footings for overturning due to the kickout forces. The only time I used hairpins was a very large building with very think and highly reinforced concrete slabs with a long distance...
  9. campbelltc

    ASCE 7-16 Chapter 28 part 2 - Parapets

    Bump. No takers on this question?
  10. campbelltc

    ASCE 7-16 Chapter 28 part 2 - Parapets

    Looking at ASCE 7-16, Chapter 28 part 2 (MWFRS) and it does not mention wall loads on parapets that I can see. From Part 1, it looks like you could use 1.5 times the wall load on the windward parapet and 1.0 times the wall load on the leeward parapet. That's 2.5 times the wall load if you add...
  11. campbelltc

    ASCE 7 Wind Zone Widths

    If there are multiple types of roofs for a building, how would you go about determining the a and 2a Zone Widths for smaller areas of roof? Say there's a 200' x 300' building with a flat roof with mean roof height of 100' but there's a smaller upper gable roof 20' higher that is 50' x 50' in...
  12. campbelltc

    ACI 318-14 - Auger cast reinforcing question

    I have a project with auger cast piles, some gravity only, some part of shear walls, and some supporting moment frames (Seismic Design Category B – not sure yet whether Ordinary, Intermediate, or Special – I have a call into the precast engineer to find out). ACI 318-14 section 18.13.4.3...
  13. campbelltc

    IBC Snow load factors

    Just one man's opinion: For the slight increase in design load, I'd use the Is = 1.0. If anything would happen, I wouldn't want to try to defend a few dollars for the cost of replacement or, God forbid, a person's life. We design primarily in a 30 psf ground snow area. We use 30 psf...
  14. campbelltc

    ASCE 7-05 - Vertical overhang pressures on leeward wind

    It may not end up making any difference in the design, but I am designing supports for two canopies hanging off the side of a low rise building (4' wide x 16' long and 8' wide x 12' long). I'll design the canopies for the uplift on an overhang, and I know the uplift on an overhang is due to...
  15. campbelltc

    Identity of open web joists

    Mellis2, I believe yours are probably Truscon Clerespan joists. They look exactly the same as the ones I encountered except for the size and panel point spacing. The load tables for Clerespan joists are in the latter pages of the link that stevenspm provided above, but I also understand that...
  16. campbelltc

    Identity of open web joists

    Thanks, guys. That was perfect.
  17. campbelltc

    Identity of open web joists

    Wondering if anyone can help me with identifying a joist manufacturer by the type of joist. The top and bottom chords (13 3/4" deep joist) are a T section: 2 1/4" wide x 1/4" thick flange with a 1/2" high x 3/8" wide web. The bottom chord slopes up beyond the last panel point to form the beam...
  18. campbelltc

    Structural Clay Tile Wall

    Manstrom, Thanks. I did some research and they appear to be Denison Interlocking Tiles. I actually found some load bearing capacities in a Sweets Catalog that was nearly a century old. Denison Interlocking Tile I'll make sure to add a significant factor of safety when analyzing the loads...
  19. campbelltc

    3/4" A325 N bolt-nut penetration

    WWTEng - Totally off this topic, but saw your post a few years ago regarding T shaped structural clay tile. I ran into the same thing and did some research on it and found an ad in Sweets Catalog from 1920 that lists Denison Interlocking Tile and it's load bearing capacities...
  20. campbelltc

    Structural Clay Tile Wall

    I'm looking for design information on a structural clay tile wall. I didn't really look at it extremely closely during my original site visit because I assumed it was non-loadbearing but after reviewing pictures and all other information, it appears that it is loadbearing. It looks like an 8"...

Part and Inventory Search

Back
Top