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  • Users: L-H
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  1. L-H

    Help me understand this roof framing

    How does gypsum board on the rafters help? Adding those gypsum boards will actually add more dead load to the system and hence more thrust.
  2. L-H

    Removal of load bearing walls in residential buildings

    Hi all, For existing residential buildings, the owners sometimes want to remove an interior wall, mostly at the kitchen or the living room to make the house more open. They would hire an engineer just to check if it is a bearing wall since that is the only thing they care about. For me it's not...
  3. L-H

    Survey existing building

    Hi Lexpatrie, Yes, I usually work with drawings provided by the architect and then do the site visit to verify the existing structural systems, take measurements of the beams, joists...that are necessary for structural design. I've figured out that the existing building was used an auto...
  4. L-H

    Survey existing building

    Thanks All
  5. L-H

    Survey existing building

    Hi all, I have a potential client asked me to help him with a renovation project. He hired an architect as well. It is an existing warehouse with no existing drawings. He wants to convert it into a restaurant (occupancy change so risk category change from I to II I believe). He asked me to do...
  6. L-H

    Structural Title Block

    Thanks all
  7. L-H

    Structural Title Block

    Hi All, Not really a technical question but when do you use your own company (structural) title block for structural drawings vs using the architect's title block? I have seen both but is there a rule for it? Thank you
  8. L-H

    Hi all, I'm using a steel angle

    I think the shear studs can effectively engage the concrete slab so they can transfer more diaphragm shear into the angle. Meanwhile the arc spot welds only attach the deck to the supporting angle so their ability to transfer diaphragm shear is limited by the metal deck alone. So I think studs...
  9. L-H

    Hi all, I'm using a steel angle

    Hi all, I'm using a steel angle with epoxy bolts to connect a composite floor diaphragm to a CMU shear wall. Can I use the spot welds (weld the deck to the angle) to transfer the diaphragm shear into the steel angle ? Or I should use headed studs instead? Thank you
  10. L-H

    Stacked beams

    Hi hokie66, I knew parabolic shear distribution on the section and the maximum stress which is equal to 3/2 V/A. But how much V each beam will get ? The amount of V the top beam will get equal to that of the bottom beam ? Let's say when we have one beam only with load w, span L and depth d...
  11. L-H

    Stacked beams

    Hi dik, Thank you for your response. Can you please explain a bit more ? Parabolic distribution for the load on the beams ? How does it look ?
  12. L-H

    Stacked beams

    Hi hokie66, Thank you for your response. So how the critical shear plane looks like in the beams when they are not bonded together ?
  13. L-H

    Stacked beams

    Hi Guys, When we have two wood beams (just for example), one beam sits on top of the other beam and there is an uniform load acting on top of the top beam, assume two beams have the same size and are laterally supported, can we assume each beam will carry 1/2 of the total load acting on top of...
  14. L-H

    footing design

    Hi SlideRuleEra: 190 kips is the total DL + LL that the existing footing was designed for. But during construction there is only dead load + a portion of live load. 2nd floor framing was designed for 100 psf LL, so maybe we can use 20 psf for construction live load. Thus during construction the...
  15. L-H

    footing design

    Hi all, I wanna to add some more info. Please see the attached photo. The existing column is a square 8'8"x8'6"x14" footing supporting 190 kips of load from the column. We are adding one more floor above so the new total load would require the new footing size to be 12'6x12'6. The problem is...
  16. L-H

    footing design

    Hi, I am trying to find a way to extend the existing square footing to support additional load from the column. I was told that I could follow the idea in the attached photo below. Just dig out some soil at the edge of the existing footing and pour new concrete with some rebars and connect the...

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