What is the applicable AWWA spec (AWWA C-???) for galvanized steel pipe water main? Is there a spec available online? (I am matching an existing pipe.)
Thanks
Dan
the perils of storm sewer design in the urban setting:
Whats the absolute minimum clearance between an existing 12" Cast Iron Class 22 water main and storm sewer. The storm sewer will most likely be a 48" inner diameter corrugated plastic pipe. I can get about 6" clear, can I encase the water...
Thanks for the replies.
I guess the point I am trying to get across is that, on a sight distance constrained driveway (say one thru an opening into the guard(guide)rail); would the driver not pull up as far as he can and not sit back the 14.4' or so from the eop- esp. given the driver's...
Thanks, confirms my 8' horizontal dimension from front of car to driver's eye
However, this is a drive (what I didn't say is that its for a SF residence), IMHO I don't think the driver would wait to enter the road from 10' back from the travelway.
In Ohio, ODOT uses equation #1 for high speed (50 Mph and greater) and equation #2 for low speed; rounded to the nearest 15" (ODOT location and Design Manual, Vol 1 Fig 202-1E). For 35 MPH, max deflection will be 2^ 45'
I'm double checking sight distance for a drive adjacent an overpass of an expressway. Drive is on the overpassing road right off the bridge approach, and can't be relocated.
The typical intersection sight distance has the car set back a certain distance from the crossing road 15' or so while it...
Here's what I did. Turns out Geopak DID cut the HEC XS correctly...well I re did the input files and imported the GIS geomtery into a blank HEC geometry window. I opened 'nother HEC RAS, with my project open. I went section by section and pasted the new info in...I'm glad the phone didn't ring...
I meant to say "to flip XS in HEC RAS" ;-).
I think my EZ-ist way is to use Geopak's cut DTM profile on each xs section location (I kept them in the DGN file thank jeebus) as flipped, store ASCII and paste into the X xsetion editor...but then the GIS cut lines are still wrong
We produced sections for HEC ras from Geopak, which were reveresed as far as the convention that the sections should be oriented looking downstream. I understand that the orientation of the cross sections is unimportant, as long as they are all oriented the same way, but we will sumbit to the...
I started with XS from Geopak, that is why I had to split a reach into two for A junction. I added a point on the end of the tributary reach and dropped it on the main reach. The program asked me if I want to split the main reach at that point. I said yes and supplied a new reach name for the...
A 35 MPH street, over crossing a Freeway. 6" high curb, with a gutter plate. We are raising the bridge for clearance on the freeway and am looking to minimize grading on the overcrossing road for the raised profile. Most standards I see show the ground sloping towards the curb to some hinge...
I have an intersection widening project, for left turn lanes; a number of horizontal curves on each approach. Should I use a correction factor for N=1.5 for all curves, or just the curves with the three lane section?
