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 TugboatEng 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. GalileoG

    Excavation inside an existing industrial facility

    I am designing reinforcement for existing footings and the top of existing footings have to be excavated and exposed. The top of the deepest footings is about 2m below top of slab-on-grade. This is inside an industrial facility, so the less slab-on-grade I have to demolish the better (i.e. no...
  2. GalileoG

    Isolation joint between floor slab and elevator shaft?

    I am designing a two-storey structure. Steel moment frames in one direction and braced framed in another. Floor slab is composite deck with concrete topping. The structure will have a concrete elevator shaft that is quite eccentric to the centre of mass. The top of shaft is somewhere between the...
  3. GalileoG

    Reinforcing Existing Steel Deck Diaphragm

    1) I am designing major modifications to an existing one-storey structural steel building. I am not able to verify the horizontal diaphgram capacity of the steel deck to resist the higher seismic loads based on the latest code. I will need to add new horizontal bracing. Existing roof structure...
  4. GalileoG

    Expansion joint at re-entrant corner

    Dik, No I cannot put x-bracing left of Grid B. Chessanyone, Free movement is only needed perpendicular to expansion joint. So a slotted connection will be provided. Actually, what you said is what I was thinking, which is to have a strut on each side of the expansion joint. The connection to...
  5. GalileoG

    Expansion joint at re-entrant corner

    I've attached a screenshot to help explain. I have an L-shaped structural steel building (steel columns and roof OWSJ) with diagonal cross bracing at building perimeter. I need to place an expansion joint at the re-entrant corner due to building length. Under horizontal loading in the direction...
  6. GalileoG

    Modification of ground floor slab supported on grade beams

    I have a one-storey steel structure (no basement) founded on pile caps with deep foundations. The ground floor slab was designed as a suspended slab with grade beams. Roof over a portion of the building will be demolished and a new roof constructed at a higher elevation. This new construction...
  7. GalileoG

    NBCC - Snow Accumulation - Code becoming too convoluted?

    I have not really been designing these last few years. Working on a design at the moment and have to calculate snow accumulation due to adjacent high roof. Looked up NBCC/OBC code and noticed just how convoluted the calculation for snow accumulation has become. Am I alone here in thinking the...
  8. GalileoG

    How to consider rebar corrosion in capacity calculations?

    I am evaluating an underground structure which is about 50+ years old and which is still in service. This structure will see a temporary increase in surcharge load and I want to check whether or not this structure is capable of withstanding this new load. I have record drawings showing...
  9. GalileoG

    'Aerocrete' concrete roof deck

    I am evaluating an existing roof deck to receive new roofing for a building which was constructed sometime in the 1950s. Original drawings show that a 4-1/2" thick 'aerocrete' roof deck spanning up to 7' between beams. No other information is shown regarding concrete strength or density. There...
  10. GalileoG

    Foundation wall above existing sewer

    Hi, I am designing a foundation wall with a strip footing located above an existing sewer. The footing is minimum 6 feet above the existing sewer (not allowed to go any closer). As I do not want to add any load to the existing sewer, I am thinking about designing the wall to span over the...
  11. GalileoG

    Rehabilitation of pavement joints

    Hi all, I have concrete pavement (about 12" thick) that is sitting directly on top of an underground structure. There is waterproofing between the pavement and the underground structure. However, the contraction joints for the pavement look very deteriorated and I want to rehabilitate these...
  12. GalileoG

    New strip footing near existing strip footing

    Hi all, I am designing an expansion to an existing two-storey building (see the attached sketch). The new structure consists of steel beams and columns. I also need a non-load bearing block wall (for fire separation) between the two structures. The columns and block wall need to be as close as...
  13. GalileoG

    Interface between new/existing structure

    Hi JAE, Thanks for your response. The first solution you proposed is the one I am currently sitting on. However, I was thinking of installing a transfer beam that is doweled through the concrete pier with a micropile on each end of the beam (2 total) with a slight batter towards to the...
  14. GalileoG

    Interface between new/existing structure

    Hello friends: I am trying to come up with some solutions for this design. I am designing a new elevator structure with a deep pit on the side of an existing building. I have attached a sketch showing the new and existing structures, and their relationship. Considerations/Challenges: -The new...
  15. GalileoG

    Galvanic Corrosion

    I am designing a repair detail for a small area of slab soffit that spalled near an expansion joint. I want to use stainless steel mesh below the existing bottom layer of black bars to keep the new patch together. Thinking of using wire ties to hang the new layer of mesh to the existing layer of...
  16. GalileoG

    Sign foundation

    If I am drilling deep, there is a risk that the drill bit might go through the conduit that illuminates the sign) at the centre of the pile where it bends into the soil. The bend is usually 2’ below grade but I imagine its depth can vary significantly. Is there any way, other than not drilling...
  17. GalileoG

    Sign foundation

    Sincerest apologies Hokie, you are a familiar name but I've always read your name in my head as "Hookie" Thanks for the input. dhengr's approach seems best. I am also looking at another sign base but this one is a little different, the top of the pile is above grade and the anchors are...
  18. GalileoG

    Sign foundation

    Thanks all for the input. Hookie: What are your concerns with extending the bored pile?
  19. GalileoG

    Sign foundation

    Hi all, I have an existing caisson supporting a sign post where the top of the caisson is below the sidewalk. The sign will be removed and the caisson will be re-used to support the new sign. I want to place the new sign base plate above the sidewalk surface (with a protection box) to allow...
  20. GalileoG

    Thin Concrete Overlay

    Thank you all very much for your help. SlideRuleEra, those documents are exactly what I was looking for - thank you!

Part and Inventory Search

Back
Top