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  • Users: KaBone
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  1. KaBone

    is 2% slope on a bench or table uncomfortable?

    Let's say I have an open patio and i put a 2% slope on it for drainage. When the owners place their furniture on it, will they complain that their table and chairs are tilted? Basically, how much slope is too much for a tabletop?
  2. KaBone

    Horizontal clearance to reaction block

    I have a reaction block on a waterline horizontal bend. How do I calculate how far back from that block before I can start another trench?
  3. KaBone

    C150 allowable tensile stress

    What are you folks using for the allowable tensile stress of Class 150 ductile iron pipe? Looking online I find 16,000 psi for A53 A pipe. Using the ASME B31.3 formula, an 8" ductile iron pipe has an allowable pressure of 1,500 psi. The pipe is only rated to 150 psi. I'm either missing...
  4. KaBone

    why are corner fence posts supposed to be bigger than line posts?

    I'm sizing the footings and posts based on wind loading. The footing based on overturn moment and the post based on L/120 deflection. I'm seeing standard details that call for larger posts for gate, corner, end, and pull posts. The gate I can understand if the gate is wider than the post...
  5. KaBone

    Allowable Wind Speed

    I'm working on chain link fence post footings and the wind load it must support. I go to the wind tables and get the ultimate wind speed. I look at the equation to calculate the depth and it uses the allowable lateral soil-bearing pressure (IBC 2018, Eq 18-1). It also uses the applied lateral...
  6. KaBone

    Chain link fence percent closure

    I found a resource that lists the percent closure for chain link fence fabrics of various mesh size and wire gauge. But sometimes people like to hang banners or stuff cups in the openings to make designs. What are you folks doing to account for that in your wind load calcs? For example, I have...
  7. KaBone

    Epoxy lined sewer manholes

    How do I determine if a sewer manhole should be epoxy lined?
  8. KaBone

    Thrust force calculation and restraint

    I've seen a few refences that calculate the thrust force based on the pipe pressure, pipe area, and angle of deflection. I get the thrust force from static pressure wanting to blow things apart. What about the force of the moving water being accelerated in a different direction or complete...
  9. KaBone

    Favorite civil periodical

    I'm looking to subscribe to a periodical where I can get the scoops on what is going on the civil engineering industry. I'm looking for real solid info, not just what appears to be paid advertisements. Any suggestions?
  10. KaBone

    Sediment screening for dry wells

    I have an asphalt paved area graded to a drywell for storm water infiltration. What are you folks doing to screen out sediments, leaves, and similar debris so the gravel doesn't get filled in with fines? Are you folks even worried about that? Low maintenance suggestions preferred.
  11. KaBone

    compaction testing by feel

    Sorry in advance if this isn't the appropriate activity area for this thread. I'm doing some utility removal beneath a concrete slab on grade. It's a small area 5'x5'x~4'D. I want to backfill in 8" lifts and achieve a 95% MDD compaction. The replacement pad will be ~5" thick with #4 bar 12"...
  12. KaBone

    drop manhole on sanitary sewer lateral

    The gradient I'm dealing with to connect the sanitary sewer lateral to the main is too steep to run a straight pipe. That usually means installing a drop manhole. This is a residential scenario, so I'm envisioning going from the house at 2-3 fps until I get to the spot where I need to drop...
  13. KaBone

    Moonlighting

    Just got my PE. Now I want to build my design portfolio. I've offered my services to just about every manager in my company. No one's come to me with work yet. I've been thinking about doing side stuff on my own. I have a few questions for those who moonlight. How has the experience been...
  14. KaBone

    building retaining wall on existing slope

    I'm not exactly sure where to begin except for how is it done? In addition to the wall design, would I have to specify the construction technique? How do you cut into a hillside to place a retaining wall without the hillside crashing down on you? How do you dig the heel? Can the heel...

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