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: *

  • Users: RDR89
  • Content: Threads
  • Order by date
  1. RDR89

    IBC Presumptive Load Values for Foundation with e> L/6

    Hi all, from doing a search of this site, it seems that the jury is still out on whether the IBC presumptive load values in Table 1806.2 are net or gross for the vertical bearing pressure. I have a foundation where e >L/6, so my bearing area is reduced. If I assume that the IBC presumptive table...
  2. RDR89

    "Side Friction" to resist overturning in shallow precast foundation

    Hello all, I am reviewing a calculation and had a question regarding the use of "side friction" to resist overturning in a small precast shallow foundation. Not sure if I should post this in the geotech group or structural but since my background is structural, I started here. I have never seen...
  3. RDR89

    WB-67 Axle Loading

    Hi all, was wondering if anyone has come across WB-67 axle loading? I can only find the overall loading, which isn't terribly different from HS20 but wanted to see if anyone had reference info.
  4. RDR89

    Converting British/European Standards to American/ASTM Standards

    Hi all, this may or may not be the appropriate place to post this but I wanted to see if anyone has any experience with converting British or European standards to American standards for materials, testing, etc. My company has some products from our friends across the pond that they would like...
  5. RDR89

    US Governing State Building Codes

    Hi all, wondering if anyone might have a useful handy quick reference for the US states and what their current building codes are? May be a long shot but wanted to reach out here before I go look up state by state to determine what they are. Main goal is to see which states have adopted IBC...
  6. RDR89

    FOS for Overturning with Testing

    Hi all, a colleague of mine completed a "pull test" today to determine the pull-out load for a product we are planning to use as a small equipment foundation. My question is - what factor of safety (if any) should be used to determine the appropriate load limits, particularly for stability? My...
  7. RDR89

    Interpreting IFST Results for Reinforcement

    Hi all, apologies if this is rudimentary but I am getting myself confused with using the internal force summation tool (IFST) in RISA3D and interpreting results. See attached example. Slab is supported at the edges as shown in the attached. Mx is in the long direction; My is in the short...
  8. RDR89

    Equipment Vault on Slab on Grade?

    Hi all, wanted to get some feedback/thoughts on having a precast equipment vault placed on top existing slab on grade. The equipment is small (~500 lb lateral load, and I assume max 1000 lb dead load). Normally I would anchor vault to the SOG whether through post-installed anchors or dowels, but...
  9. RDR89

    Embedded Pole Constrained/Non-Constrained?

    Hi all, I have an embedded pole calculation that I am doing per IBC 1807. My question is do you consider asphalt and crushed stone as rigid constraint at the ground surface? There will be 3" of hot mix asphalt on top of 8" of crushed surfacing top course (all this on top of the compacted...
  10. RDR89

    Wheel Stop Design References?

    HI all, Was reaching out to see if anyone had any references on design of concrete/precast wheel stops? I know they are typically standard designs but these have to be custom due to height restrictions and loading (70K).
  11. RDR89

    Cast Iron Frames in Concrete

    Hi all, I wanted to ask about cast iron frames embedded in concrete, e.g. for manholes. I am not super familiar with the process or considerations but was wondering about dissimilar metal concerns between the embedded cast iron frame and carbon steel reinforcement, and any other considerations...
  12. RDR89

    Shear Breakout at Slab Edge

    Hi all, I have a long precast panel that is going to be used as an equipment foundation. The slab is being lifted with the lifting anchors embedded on the sides of the slab. The lifting anchor vendor provided the attached detail for reinforcement at the slab edges to resist shear breakout but I...
  13. RDR89

    References/Resources for Short Hollow Column

    Hi all, Looking to see if anyone has any resources or references for design of short hollow concrete columns? it's more like a short hollow concrete pedestal with applied moment and axial force at the top (P = 2000 lb, M = 2800 ft-lb)
  14. RDR89

    Foundation Seismic Weight in Base Shear for Sliding?

    Hi friends, I have searched this forum and found some good information but nothing definitive from what I've seen, so I'm really asking for opinions and /or best practice at this point. I have an equipment foundation bearing 1'-0" below grade (t/slab = grade). I am wondering if I need to include...
  15. RDR89

    Conduits bundling together horizontally in slab

    Hi all, I have an equipment foundation that the contractor wants to embed some conduits in (max. 3" diameter, i.e. OD = 3.5"). I am following general ACI guidelines for putting them in the middle third of the slab, not interfering with the compression area, not putting them on the bottom mat...
  16. RDR89

    PCI 8 Point Pick Recommendation

    Hi all, I was wondering if anyone was familiar with the 8 point pick recommended spacing for precast in the PCI manual? I have a precast slab where we will need to do an edge pick and it will exceed the spacing for an 8 point pick as shown in the PCI manual and I am wondering if anyone has done...
  17. RDR89

    Embedments in Slabs ACI 318-19

    Hi does anyone know what section(s) of ACI 318-19 discusses requirements for embedments (conduit, pipes, etc.) that was previously in ACI 318-11 Section 6.3?
  18. RDR89

    EV Charging Risk Category for Wind?

    Hi friends, wanted to get y'all's opinions on what risk category should be used for wind for EV chargers? There's no standard across where I work and I've seen Risk Category I and II used. I am torn because I do think they meet the requirements of RC I but I can also see RC II being applicable.
  19. RDR89

    Reusing Threaded Inserts for Anchorage

    Hi all, I have a precast equipment foundation pad that the vendor wants to use threaded inserts in for their equipment anchors. Now they're asking if they can use threaded eyebolts in the inserts to lift the slab into place. 4 pick points at the same 4 anchor locations. The equipment is ~3000lb...
  20. RDR89

    Equipment Foundation Pad with Eccentricities

    Hi all, I have an equipment foundation pad as shown in the attached. Wind load is pretty high (V=170mph) and the equipment itself is slender in the short direction (B as shown). The equipment itself is offset from the center of the foundation pad (shown by e1) but due to the lateral load, there...

Part and Inventory Search

Back
Top