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  1. InDepth

    Philippines NSCP 2015 errata

    Does anyone have the latest errata for NSCP 2015 volume 1 buildings? I'm specifically looking for the correct reference in Section 303.9 "liquefaction potential and soil strength loss". Currently this section refers to Section 208.6.2 which doesn't appear to be correct. Also, can anyone...
  2. InDepth

    Analysing meteorological data to determine building Code Wind Speed

    Any procedures for analysing meteological weather station data to obtain 3-second gust wind speed and 10 minute average wind speed (for use as an input to either IBC/ASCE 7, Eurocode, or NZS/AS standards for design). In a country with no building code but with many meteorological stations in a...
  3. InDepth

    World Building Regulations - Country Profiles for Building Design and Construction

    Does anyone have a comprehensive world list of the building regulations by country (or website)? Essentially a Country Profile for each country with the Building Regulations used by each country (emphasis on building design and construction). I do realize that some countries don't have legally...
  4. InDepth

    Bangladesh Building Code Seismic (2006 map MCE)

    A few quick questions on the 2006 Bangladesh Building Code (BNBC) Does anyone know if Fig 6.2.10 Seismic Zoning Map of Bangladesh (Z Factor) is a 20%in50yr map, a 10%in50yr map or a 2%in50yr map? Reading section 2.5.7.1 it looks like it could be a 20%in50yrs (or is this a mistake and should be...
  5. InDepth

    Fire Training Towers and props

    Anyone know the IBC code sections that Fire Department training towers fall under? Would they be classified as nonbuilding structures? Or temporary structures? The structures aren't permanently occupied and are unihabitable. Some fire departments appear to have found a loop hole where they...
  6. InDepth

    Lagging - long vs short term

    Does anyone have any references or discussions on long vs short term lagging pressures? I am specifically looking for experiments, fem analysis, or field tests/monitoring discussions. What I am after: Is lagging pressure the same for long term and short term? I believe that this depends on the...
  7. InDepth

    Relieving platforms

    Does anyone have any good references of how soil pressures are determined below a relieving platform? I have an existing vault where the owner wants to place 10 feet of soil on top of it. I am proposing a relieving platform with piles, but wanted to know how wide I should make the platform in...
  8. InDepth

    Pile Surcharge

    So I finally found more information on pile lateral and shear stresses if anyone is interested (see thread255-244371 for original question)....for use as surcharges on shoring. "Stresses in Foundation Soils due to vertical Subsurface Loading" by Geddes 1966. The paper has great solutions for...
  9. InDepth

    Surcharge Load Approach

    Apparently Civil Tech Shoring Suite 8 uses the following methodology (see below). Key in on the fact that they take the strip loading surcharge and modify it to obtain area and point load surcharge. Is this methodolgy typically used in practice? I usually use the Terzaghi equations listed in...
  10. InDepth

    FEM Modelling

    The geotech on my project is curently FEM modelling a 35 foot tall 30" diameter secant pile wall system adjacent to an existing structure with pile foundations (within 2 to 3 feet). My design specified 5 levels of tiebacks on the secant pile (so its nice and stiff and minimizes soil dilation to...
  11. InDepth

    Vapor Pressure, Decomposition , and Temperature

    Does anyone know of any liquid that when heated increses its vapor pressure, but while being heated decomposes to another chemical, and then starts reducing its vapor pressure? i.e. Vapor pressure would increase and suddenly or gradually decrease with temperature due to heat decomposition?
  12. InDepth

    Post-Grout Anchor Diameter

    What is the maximum anchor drill diameter one can post-grout for a tieback anchor? i.e. can you post-grout a 12" diameter drilled hole? What is typically feasible? Any good references?
  13. InDepth

    Underpinning Book

    Anyone know of any books that provide a good treatise on underpinning as well as sample calculations. Looking for pit excavation, micropile underpinning, slant underpinning, reaction piles, etc...
  14. InDepth

    Secant Piles and FEM

    When modeling a secant pile wall in FEM, 1) What is the assumption of wall friction between the secant piles and the soil? Is there a way to place an element modelling the interface that has a maximum based on the maximum friction the soil can develop? 2) Do you normally model the primary and...
  15. InDepth

    Spring Stiffness of Tendon System & elastic Modulus of Tendon

    See attached. 1) Does anyone have any current data or sources that provides an average E of prestressing tendons based on diameter, # of strands, and material grade/relaxation property? Similar to table 2-2. From what I see, strand tendons are not as stiff as bars tendons (if equivalent length...
  16. InDepth

    PT Diaphragm Shear Strength for Seismic

    Does anyone know where to find papers or design guides that explains and provides examples of how PT increases the shear strength of slabs under seismic loading when designing diaphragms? 1) If you have PT in one direction only, can you increase the diaphragm shear strength only in the...
  17. InDepth

    Double Soldier Pile Wall Systems

    Does anyone have this paper? "Deformation of Vertical Excavation with Self-Supported Double Soldier Pile System" by Chen et. al. or any other papers that discuss double soildier pile wall systems. http://www.isope.org/publications/proceedings/ISOPE/ISOPE%202007/papers/I07LKC-02Lee.pdf
  18. InDepth

    Shoring Failure - Investigation Documents

    So I just got a shoring project where the wood lagging failed, soil dumped out, the soldier piles displaced, and the adjacent structure got damaged. (and subsequent emergency shoring was placed). The owner is having us work with his lawyer to perform an investigation. I've prepared a list of...
  19. InDepth

    Slurry Walls as shear wall

    Does anyone have any guidance or experience with the use of reinforced slurry walls (diaphragm wall) as shear walls (seismic zone)? Here are the concerns: 1) The diaphrgam wall is multiple segmented walls with no reinforcement continuity between panels and a waterstop joint. Any concerns about...
  20. InDepth

    Slurry Walls / Deep Soil Mixing Criteria for Offset

    For Slurry Walls and Deep Soil Mixing, is there a technical guideline or rules of thumb for selecting a) offsets from existing structures and b) panel sizes (width, not thickness). I have three cases, and I assume that the criteria will be different for each. 1) Continous footings 2) Isolated...

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