I'm working on a warehouse that's had a ton issues with leakage, and the client adamantly wants the roof drainage, which currently is picked up by roof-drains and interior piping, redirected to downspouts outside the building. The downspout will tie into the storm sewer (like the existing system...
I'm involved in a project, where an engineer wants to install a new storm pipe in a nest of existing utilities. The new pipe would cross 6" above an existing duct bank (no idea how many volts it's carrying) and an existing water main, and it would cross 8" below an existing gas line.
I'm...
Many of my neighbors/friends bonded together recently to get a contractor to fix their curbs for cheap - almost too cheap.
All he is doing is ripping out the existing curb, digging out maybe another foot behind that, and then setting up his forms, which rest on the adjacent roadway surface...
Hi. Can anyone direct me to federal standards regarding the design of on-street parking that is to be labeled as handicapped?
The ADAAG appears to be focused on parking lots. I'm trying to figure out how wide an on-street stall would need to be. Also, if it would need a curbramp/accessible...
Kind of a gross and random question here, but would you ever expect the liquid from a septic holding tank to be pale green? It's from a facility with restrooms and a cafeteria. Thanks!
When you measure the width of lane, do you take it from the centerline of pavement markings? I'm having trouble determining what I should call the width of a shared-turn lane (delineated by a double-yellow line on each side). Also, what would be the appropriate reference to cite here? I can't...
Sanity check here - you can't slope a manhole cover to match surrounding grade, (barring the use of some fancy proprietary product) correct?
Context - ADA sidewalks. If I'm right or wrong, can someone point me to a standard for reference? I'm not finding anything in our DOT standards.
Thanks.
I'm laying out a parking lot for a ballroom/assembly hall facility. The Township code states that one space must be provided for every 3 permanent seats, but that 1 space must be provided for every temporary seat. Can anyone explain why the requirement for temporary seats is so much higher...
I run a bare-bones, freelance shop - very part time at the moment. I'm trying to keep costs down, but I think it may be time for a serious upgrade.
I currently have Hydraflow Hydrographs 2004, and I run AutodCAD (not Land Desktop) 2004. No StormCAD, etc. I use a lot of spreadsheets.
Has...
I don't have a copy of the 2010HCM on hand, just the 2000. Can anyone tell me if 2010 added anything new regarding mid-block pedestrian crossings? I've come across some mention online that the FHWA does not recommend such crossings in some situations (>40mph, >15,000 ADT, etc), but I'm having...
Hi. Can anyone tell me when NJ revised its Flood Hazard Area to include the 100-year storm plus twenty-five percent? Was it in September of 2010? Thanks!
I have to come up with some rough cut/fill calcs for a conceptual meeting with a client.
We are building a parking lot and a single-story building.
We have our infiltration testing report, with soil horizons, but we don't have soil boring data yet.
In the meantime, I'm trying to use the...
I'm working on a parking lot for a flat site in the northeast that is mostly sand, with a very high water table. Drainage/retention is a huge challenge, and I was thinking about doing a pervious pavement. Bad idea?
Also, can anyone suggest a good read on the pitfalls of building on this type...
I'm working on a project that involves a new building and parking lot. It's for a now-vacant lot that used to contain a single-residence. I suspect that the water-table is close to grade in this area (soil borings will be taken this month).
I was told that the septic tank was removed when the...
Hello, all.
I've never worked with horizontal boring before, and I could use some pointers.
I'm working on a conceptual design for a new building. There are no water/sanitary mains in the street in front of our site. There are mains in a nearby intersecting street, that we plan to connect to...
Hey, gang. can anyone point me to guidelines on laying out plain conc. curb in a manner that won't cause cracking - i'm designing sidewalk bumpouts/planters and i'm trying to avoid sharp corners. in some areas though, it's difficult to round everything. i know the guideline is to provide a...
Hello.
I'm working on a project that involves curb extensions aka sidewalk bumpouts at a busy intersection. The municipality wants us to drain the sidwalk extensions toward the street. However, the existing curb is about 4" high. With the roadway crowning upward and the sidewalk pitching...
I swear this is a real question and not an elaborate PR hoax for the latest Evil Dead movie...
I'm trying to find guidelines for clearances between sanitary sewers (gravity or forced) and graves. The sewer would run parallel to the graves.
I've been scouring state regs, but I'm drawing a...
I'm trying to gain a preliminary understanding of low pressure sewer systems, having never worked with them before.
I understand that generally, each residence has its own pump that delivers the flow into the low pressure main. Is there a central pump station maintains pressure in the main...
