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  1. Rocks1

    4ft Underpinning existing concrete wall

    Can any one recommend a good flowable concrete mix and slump value for use in the mass concrete underpinning of a 12 inch concrete wall with a 24x12 spread footing? (4000psi minimum)
  2. Rocks1

    Specific Weld Design

    I was asked by a reviewer to analyze and determine the minimum weld length X of a 5/16 weld of a column reinforcement in the attached pdf. The column reinforcement is an existing jib-crane plate doubling as a cover plate and an added channel cover that overlaps. Does anyone know how to go about...
  3. Rocks1

    Compact vs Slender and Non-Slender

    Can an axial compression member be slender and the same member be compact in flexure? Or once it is slender is it automatically non-compact or considered a slender element?
  4. Rocks1

    Direct Burial Steam Expansion Loops

    Does anyone have experience with expansion loops for 100psi direct buried steam piping and could they share how that works? I am being asked to design a 250ft run between two vaults with one 90 degree elbow.
  5. Rocks1

    HSS Corner Radius

    Does anyone have a chart listing corner radius's for HHS rectangular tube steel?
  6. Rocks1

    Can anyone provide me with a decent

    Can anyone provide me with a decent insulation and jacket schedule for exterior steel piping ranging from 1.5 to 6 inches diameter and transporting glycol mix at 20 deg F? Outdoor temp is 110 deg F max.
  7. Rocks1

    Column and Beam Cover Plate Weld design

    Can anyone provide me with a continuous and intermittent weld size design example of a cover plate to a wide flange beam or column.
  8. Rocks1

    AISC 360-10 Buckling Failure Clarification

    Thanks. Makes Sense
  9. Rocks1

    AISC 360-10 Buckling Failure Clarification

    Can anybody provide me with a clear narrative understanding of the difference between 360-10 CHAPTER E COMPRESSION E.4 "Torsional and Flexural Torsional Buckling" and 360-10 CHAPTER F - DESIGN OF MEMBERS FOR FLECTURE "Lateral Torsional Buckling"? What is the difference and is there redundancy...
  10. Rocks1

    Hot Rivet Strength

    Does anybody know how to determine rivet shear strength for 7/8 inch hot rivets (or rivet properties in general) installed in 1915?
  11. Rocks1

    Lateral Torsional Buckling

    Does anybody know a method for determining "rt" in AISC 360-16 Formula F4-8 for Lateral Torsional Buckling for the beam shape below? The top flange is in compression, The combined shapes are an S24x105, C10x15 and a 7/8x12...
  12. Rocks1

    Old S-Section

    Can anyone tell me where I can find the section properties of an old S24x105. 1918 vintage? I am only able to find sections that are very close in my historic manual collection (S24x106, S24x104.5, etc.)
  13. Rocks1

    Existing 1941 drawing Concrete beam reinforcement Schedule Interpretation

    Thanks Guys - Big help
  14. Rocks1

    Existing 1941 drawing Concrete beam reinforcement Schedule Interpretation

    Is anyone able to help me decipher the the reinforcement and stirrup call outs in the beam schedule in the uploaded pdf? https://res.cloudinary.com/engineering-com/image/upload/v1548442980/tips/12-201_pxy5dd.pdf
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