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  • Users: Yao1989
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  1. Yao1989

    Sliding Check for a House Built on A Slope

    Try to do a quick sliding & overturning check for a house built on a slope. Pe represents seismic earth pressure Pa represents active earth pressure Resisting forces I think will be weight of the house & concreete foundation. However, my questions is can the soil below the slab on grade but...
  2. Yao1989

    Integrity Reinforcement Load Requirement

    This may be a dumb question. I am using canadian code CSA A23.3-14. Our formula for structural integrity reinforcement simply asks for sum of steel area = 2 x Vse / fy. However, the definition of Vse says shear that is transmitted to column or column capital due to specified load, which gives...
  3. Yao1989

    Wood Shear Wall on Concrete Podium Design

    I got a question. I am adapting ASCE 7's two-stage seismic analysis for the canadian code to design mid-rises. My first time doing a project like this where seismic governs. According to ASCE 7, I understand I am suppose to scale up the reaction from wood to concrete by RdRo wood (3.0x1.7) /...
  4. Yao1989

    Foundation for one-side-formwork

    I'm designing a foundation for foundation for one-side-formwork. My problem is that after drawing the free-body-diagram, I am finding that I need a ridiculous sized footing in order to prevent the single side form from sliding. Based on a 11' tall one-side-formwork, the formwork designer's...
  5. Yao1989

    Acceptable failure rate for glass

    Does anyone know if there any codes that gives clear guidance on this? in Canada I use CGSB 12.20-M89 and ASTM E1300, for application of windows the typical acceptable probability of failure is 8 in 1000 once design load exceeds capacity, both codes give vague indication in the commentary that...
  6. Yao1989

    Limit State Resistance Factor for Hollo-Bolts

    I am currently working with a project where canopy structure is being hung to base steel using a hollo-bolt. Does anyone know what is the appropriate safety factor to use in limit state for this blind-bolt product? I practice in Canada, where we use CISC S16-14, which says we should use...
  7. Yao1989

    Laminated Glass Deflection for Wind Load - Wind load duration

    Here is a question that has been bugging me for a while. For laminated structural glass, checking for wind load deflection, what load duration should we assume for the wind? I am asking this because depending on the load duration, the stiffness of the PVB interlayer is drastically different...
  8. Yao1989

    Tongue and Groove IBC Nailing Requirement 2304.8

    I have a question. When designing a 64mm T&G deck, does anyone know why the IBC has this requirement for nailing between planks? It states that for 64mm deck: 2304.8.5.2 Nailing. - Each piece shall be toenailed at each support with one 40d common nail and face-nailed with one 60d common nail...
  9. Yao1989

    Bending Pilaster to Footing Detail

    Hello fellow structural engineers, I have some concrete detailing questions. I read from a post previously (http://www.eng-tips.com/viewthread.cfm?qid=284040) that when designing retaining walls connecting the back footing, the dowels should be turned towards the inside (still feels...

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