pittsig,
Thank you for the insights into your experiences. I have not been exposed to a juridiction wherein the specifications, particularly the testing parameters, you cited have ever been required. I would be interested in learning more about the costs and how the contractors solve the...
TKF,
Did I read that correctly? The sewer main is to be C-900 and pressure tested to 150 psi? Is it a forcemain perhaps (although I doubt it with manholes and gravity services)? Is it possible that someone has made a mistake and has incorrectly specified C-900 and/or inadvertantly copied...
Hmmm,
From what I have read so far, it appears as though there may issues on both side of the service line. CML D.I. can deteriorate over time, but more importantly, if the prpoerty owner has never flushed lines onsite, and the municipality has equally not exercised the hydrants, a buildup of...
This is a question that has been dogging Owners since the contract was first developed. In my experience, i learned the hard way that the Engineer's interpretation of risk is vastly different than that of the contractor. I have not read the contract form, but would wager that there are some...
Happy New Year folks,
Just one more thought regarding this issue, particularly the last posting (Kumar). In our Province, at the conceptual/predesign stage of a new subdivision a geotechnical investigation is undertaken. This investigation provides recommendations for road...
Ouch!
Realizing of course that depending on the size, post closure is going to be between 50 to 75 years, and I would assume that the landfill has been in operation for about 25 years? Yes? No?
The concern is not going to be migration into the river per se, unless the lanfill is located on a...
Groundwater seepage?
Are you referring to leachate migration over time within the landfill? Or the percolation rate of the leachate through the liner? Or is leachate migrating into a groundwater source? Or are you needing information for a new site?
KRS Services
www.krs-services.com
Maximum velocities should not be the sole parameter. The key should be the headloss through the line and the existing line pressure at the main. With minimal pressure, say 40 psi at the main and a hill with a typical two storied home, with a sprinkler system...the overiding concern is going to...
Fundamentally you have to determine your liquid level in order to obtain the HGL. Are you emptying a full tank? 1/2 full?
Next, you mentioned the pipe is a pressure line, then a force main and then siphon. What exatly are you trying to model? From your last sentance I think you want to know...
May I add one more item?
Your thread mentioned the fact that the Town/City is requesting that backflow prevernters be installed. In my opinion, this is cheap insurance in case of a blockage. If this seweeer has been operating for 50 years, it was either well designed to ensure that sufficient...
Holy like to move dirt too much Batman!
While your explanation satisfies your situation, the methodology of the approach to your solution is somewhat confusing. I am assuming the contaminated soil remediation/burial is within the regulatory guidelines, so I'm not going to address that. As I...
Has someone else designed the forcemain sizing? With only 9 homes in total, the forcemain may be oversized because it is unlikely that the systems are going to be discarging at once, therefore there may be a small risk of the line going septic. Notwithstanding that, you asked about connecting...
This is not standardized....just locally accepted and practiced/understood.
Class A - Pre-tender estimate - 5%
Class B - Mid Design - 10% to 15%
Class C - Preliminary/Predesign - 20%
Class D - Conceptual - 25% or designers level of comfort.
KRS Services
www.krs-services.com
When you observed the guage on the house....what did it do, specifically? Did it rise from 40 psi to 120 psi at a steady rate, or did it bounce?
When you noticed these spikes or when closing (running) water fixtures, do you hear an audible pipe "bang"?
How often did the spike occur? Was it...
To reply, I think the overiding issue would be that of safety. Is the traffic count and average or a peak? Is the work on a highway or highspeed (or lowspeed) urban?
If the work area is constantly shifting, such as a pipeline construction, I would tend to go with flag persons during...
You aare laying out a house foundation and are going to use a total station or theodalite? Unless this thing is huge...all you need are a long tape measure (30 m or more) and some stakes/paint. Since you are going to rent from an establishment supplying survey equipment, you can rent some...
I my humble opinion, from the information you provided, I think you are wasting your money in hiring a contractor to excavate to determine whether the sewer line is leaking and the effluent is migrating to your sump.
Your thread is silent on whether the municipality was contacted, and what...
Hello All.....I happened by this thread, I hope I'm not too late for a little advice.
Firstly, what is the relationship between the contractor and the the Owner or yourself, in terms of contractual obligation? It wasn't atated, but your thread sort of points in the direction of either a type...
Can I ask one really fundamental question? In the sizing of the line and pump, inconsideration of the oil product, who calculated the losses in the system? I say this because in this part of the world, pipelining bituminous oil is a way of life, but we allow the experts to do so. Typically...
Can you elaborate on the origins of the silty runoff water? I am under the assumption that the surface of the road is anACP or similar structure. Or is it a gravel road? We use a number of different options for elimination of the silty water, but they depend on what your final objective is as...
