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  • Users: m1208
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  1. m1208

    Redwood beam bending stress

    I have an exterior second story wood deck and need to replace the existing 6x12 (22' long) wood beam. I like to use redwood beam to prevent dry rot issues. The only available beam type in our area is 6x12 redwood, con-heart grade. For design, I need the allowable bending stress for the 6x12...
  2. m1208

    ground water table

    I am looking for a website for ground water table elevations (approximate). At this time, we do not want to do the site explorer testing.
  3. m1208

    wood trusses subject to house fire

    I have a single story house with fire damage that started in the wall electrical panel. The manufactured wood trusses in the attic space are approximately 30 feet long and spaced at 2' on center. I see lots of smoke damage to the top chord and web members of the trusses, but no smoke damage...
  4. m1208

    Concrete-slab floor on grade, surface delamination

    I have a one-story building with concrete-slab floor on grade, with carpet flooring. The slab is approximately 40-years old. Recently one corner of the concrete-slab floor (by the exterior walls) shows sign of surface delamination/flaking. Any idea what may cause that after...
  5. m1208

    Thrust block for water pipe hanging from the bridge structure

    I have a new 14" (ID) ductile iron potable water pipe hanging from the bridge structure. The pipe is approximately 600' long, relatively horizontal, working water pressure is 100 psi, 1500 gpm (max). The pipe will be installed in the snow country. I need to design thrust block for the pipe...
  6. m1208

    2001 California Building Code

    I am looking for pdf copy of old "2001 California Building Code". Any idea where I can find it? Thanks
  7. m1208

    Galvanized steel water pipe

    I am using a 14" diameter galvanized steel pipe for potable water design. The pipe is exposed and hanging from the concrete bridge overhang. The pipe line is approximately 600 linear foot and water pressure inside of the pipe is 250 psi. The job requires that the pipe to be made in USA. I do...
  8. m1208

    Wind load on pipe hanging from bridge

    I am looking for wind load acting perpendicular to water pipe line hanging from the bridge overhang. ASCE 7-10, is not clear about the equation and the coefficients to be used for the elements of the structure (pipe line). Any idea what equation to be used from ASCE 7-10? I was not able to...
  9. m1208

    Hanger design for Water line hanging from the bridge soffit

    I am looking for design example/criterial for design of large diameter steel water pipe hanging from the bride soffit, for vertical and lateral loads.
  10. m1208

    Cemented soil allowable bearing pressure

    Hi: I am working on an old project and they have classified the soil as "Cemented Soil" under the foundation of the building. Table No. 29-B of the Uniform Building Code does not list the "Cemented Soil" in the table. I was wondering what soil class I can use for the allowable foundation...
  11. m1208

    Slab design for large water tank

    I am designing concrete pad for a large metal water tank. The water tanks is 65,000 gallons capacity and has 21 feet diameter. The total load of the tank, water and concrete is approximately 700 kips. I am using 12 inches thick by 25 feet square concrete slab pad to support the tank. For the...
  12. m1208

    concrete slab on grade driveway truck loading rating

    This is a 4” thick concrete slab on grade residential driveway of the garage. I have large cracks in the driveway slab. I am looking for sample calculation to use to determine if the delivery truck driving into the driveway had caused the cracks in the slab. I have the weight of the truck...
  13. m1208

    Foundation compaction grouting

    I am working on a one-story structure on concrete-slab floor in California. A portion of the foundation and the concrete-slab floor has settled and some of the walls have developed cracks. We are planning to raise the foundation and the concrete-slab floor (approximately 2 inches) to stabilize...
  14. m1208

    Ceiling /Attic space live load per UBC 79

    This building is built in 1979 and has manufactured roof wood trusses. I am looking for the required ceiling or attic space live load at the time of the construction. The building is built per 1979 uniforhttp://www.eng-tips.com/m building code. There is no storage load in the attic space.
  15. m1208

    Architectural post

    This question is about an architectural (20' tall) post at the front of the building. Generally, if the post is a structural component of the building, then we design the post to support the gravity load plus any lateral load. In case, if the post is only for architectural reason and does not...
  16. m1208

    Nail end edge/end distance for end of beam connection

    I have an existing 5 1/8" wide roof glue-laminated beam. I need to connect a 2x8 joist to the end of the glue-laminated beam (cantilever end of the beam). I am using the joist hanger from the Simpson (MUS28). My concern is that the nails are very close to the edge of the glue-laminated beam...
  17. m1208

    Angle L2x2x3/16 vs L2x2x1/8

    I had specified L2x2x3/16 angle bracing for a very small (12" wide x 12" tall) bracing system. The length of the brace is 13" The shop has fabricated the bracing system with L2x2x1/8. I checked the allowable load and L2x2xx1/8 is still satisfactory to resist the load. My question is the AISC...
  18. m1208

    Allowable soil bearing pressure

    Under UBC the maximum allowable soil bearing pressure was 1000 psf (without the need for soils report). Under CBC 2013, TABLE 1806A.2, the same soil bearing pressure is 1500 psf. The same Dead load + Live load governs the design, using the working stress design. Any body know what was the...
  19. m1208

    ASCE 7-05 FOR WIND

    For one story hour with a roof mean height of 15', gable end wall system, roof pitch 4:12, wind 85 mph, exposure C, I am getting 32 psf wind uplift for the roof ridge beam. I need this load for the code load combination system to design the ridge beam. Any body has any idea why the uplift wind...
  20. m1208

    Ridge beam desing with the load combinations from the California Building Code

    Does anybody has a detailed calculation for roof wood ridge beam design example, incorporating all the load combinations from the California Building Code?goodmantoo@comcast.net

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