I'm doing a report on Space Frame Foundations in Arctic Regions and I need to find some journal articles or specialty conference papers for references. Actually any information would be appreciated. I've checked the Triodetic website and they don't give much on foundations. I also checked the...
I'm working on a 14 acre wastewater lagoon that has no single well-defined discharge stream. The are about 12 small (6’W x 4’D) discharge streams. The locals are concerned that the lagoon is short-circuiting back upstream of their raw water intake on a nearby river. We need to dam all these...
I asked this same question a few months ago, but didn't get any responses. I am designing a vacuum sewer system out of 6" HDPE SDR 11 pipe. The service lines from individual homes are 2" HDPE SDR 11. AirVac recommends connecting the service line to the main with a 6"x6"x2" HDPE 45deg. wye...
I am designing approx. 5000 feet of above-ground utilidor (3' wide x 1.5' tall out of 1/8" aluminum with 4" of board foam insulation) and one of the concerns is to keep kids from playing on it. The utilidor is anywhere from 0-5 feet above the ground. My first thought was to fabricate a...
I am replacing a watermain and I need to connect the new 14" HDPE SDR 11 to the existing 14" SCH 10 Steel pipe going into a pumphouse. Currently the main is connected to the pumphouse piping with a 14" Dresser coupling (outside the pumphouse, below grade). I was thinking either a flanged...
Does anyone know of a HDPE Butt Fusion Machine that will fuse 6"-10" x 18" HDPE Arctic Pipe without having to strip the CMP Jacket back. I am looking for a light weight machine that is designed for close quarter fusing.
I'm having trouble finding a vendor in the northwest, Alaska specifically, for 1/8" THK x 2" Wide Neoprene/EPDM/SBR Foam Rubber Adhesive Strips. I need a few thousand feet of it. Any suggestions??
I am working on a project in which a school and teacher housing will have gravity sewer lines to a lift station. We will eventually turn the system into a vacuum sewer system and the lift station into a vacuum valve pit. Does anyone have any experience with this conversion from a lift station...
I'm looking at an ultrasonic flow meter for 10" HDPE forcemain and I was wondering if anyone knew what the advantages/disadvantages of a single head flow sensor would be.
I am working on a project where I have a 6" HDPE SDR 11 vacuum sewer line (along with other pipes) inside an aluminum utilidor approx. 2'H X 3'W with 4" boardfoam all around. I need to find a SS service saddle with a 2" IPS X approx. 10" MIPT nipple at 45 degs. Since this is a 2" lateral...
I am working on a project in which I need to install a flow meter vault (horseshoe style manhole) to measure the flow of domestic wastewater on a 6" HDPE sewer main. The flow meter needs to be a non invasive "strap-on" style that will fit inside the 4' diameter manhole. The sensors need to be...
I was wondering if anyone knew where I could find technical information on closed head rivits, strength, sizes, styles, etc. I'm designing an above ground alum. utilidor that will house HDPE water and vacuum sewer lines and I need to attach the bottom sheet.
I had a disagreement with my roommate about the difference between a motor and an engine. I was wondering if someone could clarify the difference for me.
I'm working on a project where I need to, more or less, conduct an inventory of the water and sewer piping. I need to take the length, grade, type, and orientation of each pipe section. The gravity sewer and forcemain lines will be easier because I can take sections between manholes and lift...
