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  1. nutbutter

    Seismic Zone Maps?? Where can I find?

    Does anyone know where to find the seismic zone maps (I-V, I believe). I think they were in ASCE 7-02. I don't want to purchase ASCE 7-02 because I only need to look at the map once. Waste of money. Does anyone know where I can find these online for free? I can find all sorts of more...
  2. nutbutter

    Tower Crane Foundations

    Hello, I've seen some tower cranes spring up lately very quickly. I never been on a site that uses tower cranes and I'm curious how these are anchored into the ground. They always carry fairly heavy loads and they seem to be installed almost overnight. What type of foundation system do they...
  3. nutbutter

    Need clarification on definition of "Caissons"!!! HELP!

    Hiya, I don't know how I missed getting a full grasp on this in undergrad. Obviously, I've googled/wiki'd and done some research online. My online research leads me to believe that this is some huge structure that allows people to enter and dig out the soil below. My problem is that the...
  4. nutbutter

    Removing large equipment from steel building

    I'm just fishing for some ideas. I'm looking into a way to remove 3-4 very large diesel generators from a steel building. The generators are going to be replaced and it is proving difficult to find a way to remove the old generators from the building. There is one overhead door and there is a...
  5. nutbutter

    Roller Compacted Concrete (RCC) question

    I have a question that can probably be answered rather simply by a structural engineer. I'm a civil engineer, however, I have little experience with structures. I'm fortunate enough to have been put on a job where the schedule is lax and I can get a bit of structures experience (albeit with...
  6. nutbutter

    Foundations for modular homes

    Hello, I'm assisting in the design of a foundation and tie-downs for a single-wide modular home. I've never done one of these and I'm wondering if anyone has any advice or could steer me to a good reference. I don't really know where to start. I don't even have a loading, so I need to come up...
  7. nutbutter

    Various hydraulic/hydrology modeling programs????

    What's the difference and how compatible are these different programs: SWMM, HEC, Hydra, H20 Net SWMM, HEC-1, HEC-HMS, HEC-2, HEC-RAS, HY8 Why are there so many and what are they each used for?? The same thing?? Similar things?? Completely different things??? I've used HEC-RAS a little bit...
  8. nutbutter

    Rolled fittings???

    Hello, This is probably a silly question, but I'll ask it anyway...nobody is around the office. What is a "rolled" fitting? I'm working in designing underground utilities and I have some mark-ups done by my supervisor. He told me to call out the rolled fittings....and I'm at a loss. It's...
  9. nutbutter

    Estimating costs on land development projects?

    Hello, I'm wondering if anyone has a good reference for estimating costs on land development projects? Unfortunately, I've had poor mentors who were unable to provide insight into their cost estimating numbers. I used to have a large spreadsheet that broke out costs according to units...
  10. nutbutter

    TR55 difficulty downloading

    Has anyone tried to get this lately from the NRCS? It's damn near impossible to download the old (or the new for that matter) TR-55 program from their website. It's all setup via FTP, and I'm having a hell of a time downloading it via HTTP. I've changed all my security settings and it still...
  11. nutbutter

    Shrink/swell factors for earthwork calculations

    I'm beginning to do earthwork calculations for site work. I'm performing the calculations on Terramodel and I was wondering about shrink/swell factors. I typically just use 1.00 for the factors and compute a straight volume without factoring in shrink/swell. How are these shrink/swell factors...
  12. nutbutter

    Haunches of pipe?

    This is a very silly question, but nobody is around to ask. What is meant by the haunches of a pipe? I've got to extend the pipe bedding to the haunches. Is it the centerline?
  13. nutbutter

    Flow into submerged Grate Inlet

    Hello, I was wondering if anyone had any advice on calculating the flow into a submerged grate inlet. I'll be contacting the vendor shortly because I know the flowrate will be highly dependent on the grate geometry. Basically, we're using a submerged grate inlet to act as a flow control for a...
  14. nutbutter

    Universal aggregate gradations

    Hello there, Pardon my seeming lack of knowledge. I've been doing environmental work and I've been pulled onto my first road project so I have a lot of questions. I was wondering if there's a universal way to call out aggregate? It seems there's millions of ways it's called out. For...
  15. nutbutter

    Sizing Geogrid for roadway improvement

    Hello all, I was wondering how y'all go about sizing biaxial geogrid for roadway improvement. I'm designing an aggregate road and I'm going to be putting some biaxial geogrid between the aggregate and the subbase. How does one go about determining the exact product or sizing to use? I'm sure...
  16. nutbutter

    Drain tile design???

    I've been asked to determine a quantity of drain tiles needed for the construction of a large concrete pad. The project consists of the construction of a large concrete pad approximately 340' x 175' for storage. Now, I'm not too familiar with drain tiles and I've never had to do any design...
  17. nutbutter

    Strongest Culvert material

    I'm looking for the best culvert material to use in a specific application. The culvert will be running under a haul road that is basically a 2' thick aggregate road. The top of the culvert will only be covered by 18" to 24" of aggregate roadway surface at it's point of minimum cover. What...
  18. nutbutter

    Steeper than 3:1 slope?

    I'm designing a construction road and I'd like tie-in to the existing grade at a slope steeper than 3:1. This road is on an industrial site and the side slopes won't need to be mowed. I was wondering if going to a 2:1 slope would present any problems beyond not being mowable. Would a 2:1...
  19. nutbutter

    AASHTO design vehicles

    Do these values incorporate the weight of a fully-loaded vehicles or are they just the empty vehicles. For instance, the HS20-44 design vehicle has axle weights of 8kip, 32kip, and 32kip. Are these the axle weights for the fully loaded vehicle, or are these the axle weights for the empty vehicle?
  20. nutbutter

    Determining ESALs - please help!!!

    OK, I tried to get some help on this question in another thread, but I could not. I just need some feedback as to whether my estimation of ESALs makes sense or not. I'm trying to determine the ESALs for an HS20-44 AASHTO loading. This truck has 3 axles, spaced 14' apart, with axle weights of...

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