I am looking for a design reference for the acceptable belly/sag in a wastewater force main. The wastewater is little more than water, but due to existing infrastructure may have to temporarily cross below and obstruction. Flow is less than 100 gpm and the pipe size is 3 inches.
Any...
A client is running a new 4" water service line onto their property. The pipe is going to be ductile iron and terminate at a 4" gate valve in a concrete valve box to which they will attach a hose to be utilized as needed for filling water trucks and such. The water line will supply...
I have a client that is looking to demolish an old industrial building. They want to leave the building slab in place, fill in some low lying portions of the slab that have settled over time and where some sumps were located with aggregate and then pave the entire area with a 2" asphalt surface...
Usually I strictly handle water resource projects, but working on a paved industrial project where we will have concrete pads in the middle of asphalt pavement. Is there anything that needs to be taken into account at the junction of these two surfaces, or does the asphalt simply get placed to...
I have a general question in regard to anti-seep collars. We typically spec in our sediment basins; however, recently I have heard people say that they are not very effective and are prone to failure, especially as it is hard to compact the soil between the collars during berm/impoundment...
I don't work with asphalt pavement often; however, we have a client in need of some repairs to the asphalt pavement around their facility. The combination of heavy trucks, vehicle braking, and repetitive turning (and possibly improper drainage) has created some cracking, rutting, and shoving in...
I have two pumps operating in separate sumps and joining at tee and entering a tank through a single line. All lines are 2" O.D. HDPE SDR 11 pipe, shortly after the connection, the line enters a manhole and exits as a 4" SDR 11 HDPE Pipe. I have very little info on the pumps other than one was...
I have two pumps operating in separate sumps and joining at tee and entering a tank through a single line. All lines are 2" O.D. HDPE SDR 11 pipe, shortly after the connection, the line enters a manhole and exits as a 4" SDR 11 HDPE Pipe. I have very little info on the pumps other than one was...
I am working on a design to collect some low flow groundwater seeps entering a stream. My issue is that to drain to single location I will have to follow the grade of the stream and my pipe is going to have to run at the toe of the stream bank within the stream channel. It is not a large stream...
I am working on a design to collect some low flow groundwater seeps entering a stream. My issue is that to drain to single location I will have to follow the grade of the stream and my pipe is going to have to run at the toe of the stream bank within the stream channel. It is not a large...
We need a 5' soil buffer for a landfill that is to be build, unfortunately the bedrock in some places may be too shallow and need to be excavated out. We would like to avoid blasting and have recently come across info on dexpan for rock demolition. I have seen the demonstrations on the...
I just recently graduated and I am having to determine the water pressure of a 2" service line at the site of a new industrial facility. The facility will require at least 35 psi at the meter and is located 2,715 ft from the nearest fire hydrant. The site is 78ft higher in elevation than the...
