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  1. TTomaz

    Steel "Unheaded" Stud Anchors in Composite Components

    Short update: maybe I was missing the concepts regarding the types of anchor studs, which can be whether headed or headless studs according to AWS D1.1. It seems like DBA's (deformed bar anchor) complying with AWS D1.1 are headless studs type C cold worked low carbon steel fabricated under...
  2. TTomaz

    Steel "Unheaded" Stud Anchors in Composite Components

    Thank you all for the replies. @WesternJeb, if this falls under ACI 318, then what is your opinion on what chapter should apply? The same as for those shear lugs in base plates? Chapter 17.11 of ACI 318-19?
  3. TTomaz

    Steel Post with Cantilever embedment depth

    I'm not familiar with the soil of Phoenix Arizona, but if we are talking about non-cohesive soils, you can give a try on simplified theory fo Broms (1964, 1965), which estimates the ultimate lateral capacity of the soil. The method does not consider the contribution of friction (shaft friction)...
  4. TTomaz

    Offshore batter pile systeme

    Hi, I understand we are discussing steel pile /pile caps. * For proper shear and moment transfer it is recommended full fixity. Generally offshore platforms have considerable horizontal loadings (wave loads/currents/mooring loads/seism?), so some caution should be given to this moment transfer...
  5. TTomaz

    Steel "Unheaded" Stud Anchors in Composite Components

    Hi! I am currently reviewing a proposal involving the use of A-36 "unheaded" stud anchors welded to a steel pile plug for concrete shear transfer, where tension is not anticipated. As per my examination of AISC360-16, specifically in the I.8 Steel Anchors chapter, the documentation primarily...
  6. TTomaz

    Applicability of moment of inertia reduction on beam/slab on grade

    Hi there! ACI 318-19 states at Table 6.6.3.1.1(a) that a moment of inertia reduction is permitted for elastic analysis at factored load level of nonprestressed beams (0.35 x Ig) and slabs (0.25 x Ig), where Ig is the moment of inertia of gross concrete section. The question is rather simple...
  7. TTomaz

    ASCE 7 seismic reduction factor (R) for a crane supporting frame

    Dear all, I'm reviewing a design of a crane supporting frame (near 10 m high and 20 m in width) which is connected from one column side to the other by tension-only rods and a light-weight non-structural roof. In this direction, the foundation footings are connected by beams. We're talking...
  8. TTomaz

    Heavy Duty Pavement on Rockfill

    Thank you Ron for your support. I agree with you that pavement layers should get progressively stronger. However, in our case, the subgrade is "naturally" a high-quality material (rockfill). In our case, my understanding is that we're designing a flexible pavement, since the upper layer is...
  9. TTomaz

    Heavy Duty Pavement on Rockfill

    Dear all, We're currently supporting the design of a flexible pavement on a rockfill (1-1000kg), with expected high/very high subgrade reaction modulus. The C8/10 layer is defined according to Material Equivalence Factor (MEF). However, there is no/very little reference to high strength...
  10. TTomaz

    Size effect factor in thick slabs

    Hi there, ACI 318-19 presentes throughout its new version a size effect factor, which directly reduces shear strength in thick slabs, for example. In my case, I do have really thick slab subjected to high shear load. The shear concrete strength (Vc) of my 150 cm (59'') slab 40 MPa (6000 psi)...

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