Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: Lutfi
  • Content: Threads
  • Order by date
  1. Lutfi

    Combined Timber and Microlam Beam Load Sharing

    It has been a long while since I have been in this forum. Hello everyone. I want to pick everyone’s brain here. I have been called, of course after the fact, to evaluate a situation where a contractor has already installed a beam, 9.33’ span made up from SYP number 2. The beam is supporting 5...
  2. Lutfi

    Gross vs net uplift C & C Pressure

    I am curious as what fellow engineers here consider, to arrive at net C & C uplift pressure, as dead load resisting the gross C &C uplift pressure on roofs? Regards, Lutfi
  3. Lutfi

    Surcharge for a Sea Wall

    All, I am analyzing a sea wall that is used for a small park. The wall is retaining 4 to 6 feet of earth with the water in the river side is about 3 feet above the mudline. The wall does not appear to be subject to vehicular traffic. I am of the opinion that 40 psf surcharge would suffice. This...
  4. Lutfi

    Davenport Apartment Collapse

    The partial collapse is a sad event. I have seen some partial floor plans of the Davenport apartment. I would love to see a complete set or at least the full sheet(s) of these legacy plans. Has anyone been able to locate them online? The following link is for various documents including the...
  5. Lutfi

    Hahney's formulas from the "Log Span Tables"

    Hello to all. I hope everyone one is doing well. I am searching for Hahney's formulas for Log Span Tables. I searched on line and came back empty handed. Does anyone know where I can get a copy for this nice book? Regards, Lutfi Regards, Lutfi
  6. Lutfi

    Live Load on Tiki (Chickee) Hut

    Long time since I came here answered and posted any questions. Do any of you have experience in the design of Tiki/Chickee huts? If so, what do you use for roof live load? I know the code call for 20 psf which can be reduced based on tributary area and the slop of he roof. I mean the roof will...
  7. Lutfi

    A late note, in 1974, grade 40 bars

    A late note, in 1974, grade 40 bars were being used widely. Regards, Lutfi
  8. Lutfi

    ASCE 7-10 Vs. ASCE 7-05

    I had a small building designed using ASCE 7-05. However, the owner asked us to upgrade the design utilizing ASCE 7-10. When the resulting pressures were compared, on this particular building, there is a increase of approximately 10 psf in the pressure for the wall and roof C&C. The pressures...
  9. Lutfi

    Transverse Tension in Bars

    I am being told by another fellow engineer that one can count on a transverse continuous horizontal bar that a hooked bar goes over will carry tensile load hence the development length of the hook does not have to develop! I never heard of such a thing before. Does anyone know if ACI has any...
  10. Lutfi

    Cast in place corbel

    I came across a continuous corbel detail that is being formed as part of concrete tilt-up wall. I always used ACI detail and requirements for corbels. However, the attached corbel detail is not detailed in the way I like to see them. In my opinion, the detail may have enough shear capacity...
  11. Lutfi

    12" floor prestressed concrete joist

    Good morning to all. I was wondering if any of my esteemed colleague has within their reach data for 12" prestressed concrete floor joist spaced at 4'-6" ON with 3" composite slab. I am analyzing, at home and short of references, a building that was designed circa 1986. Allowable uniform load of...
  12. Lutfi

    CAD files

    My firm has CAD files that another engineering firm is interested in buying for us as part of their effort to adopt them as the new EOR for the same project. What is a fair value to selling these files? All transaction is legal and client fully understands the situation. Our contract with the...
  13. Lutfi

    Live Load on Marine Dock

    Based on ASCE 50, the recommended live load on marine dock is 100 psf else use local code. The marine dock is for small crafts (max boat size is 42 feet). To the best of my knowledge, FBC does not have any provision for marine docks. Based on your experience, what do you use for live load on...
  14. Lutfi

    Old Double Tee Load Table

    I am being asked to review horizontal cracks; cracks are parallel to the double tee spans, in a patio floor that was designed in 1966. The floor is framed with double tees. They are designated on the as-builts as “F-DT14-L”. Please see attached framing plan. It is clear that they are 14 inch...
  15. Lutfi

    Link to Wind Speed by Location

    I hope all of you find the following link useful. It will generate wind speeds for ASCE 7-93, 7-05 and ASCE 7-10. All you have to do is input the coordinates for the project site. http://www.atcouncil.org/windspeed/ The module is on the Applied Technology Council web site. Regards, Lutfi
  16. Lutfi

    EF Cable Detail

    Good morning to all. The attached detail was sent to me by the mechanical engineer on one of the projects that is under construction. The fan was approved and installed for lower wind speed than is required by code. The fan supplier is suggesting adding the four cables so that it meets the...
  17. Lutfi

    Anchoring HVAC and Equipment

    Does international building code require anchoring HVAC and other equipment for all buildings or only critical facilities such as hospitals? Also, Does IBC, chapter 16, part 1604.9 the word “system” to include HVAC and other equipment? Regards, Lutfi
  18. Lutfi

    Chilled Water Line Hanger Rods

    I am dealing with the following situation on one of the projects we designed. During punch list, we noticed that contractor supported chilled water pipes to the bottom of a sloping roof beam (the beam span is perpendicular to the roof slope; the beams are 16 inches on center). The contractor...
  19. Lutfi

    Screwed Roof Deck

    Hi to all. I have been away from the forum for a while. At any rate, I was wondering and I already began search on data to support diaphragm values for screwing wood sheathing into light gauge metal trusses with TEK screws. I already contacted eh APA and they stated that they do not have any...
  20. Lutfi

    TUFCOR Roof Deck

    I have been away from this forum for a while. Now I am back!! Does anyone have literature on TUFCOR roof deck? Please let me know. Regards, Lutfi

Part and Inventory Search

Back
Top