Hello,
I have a reinforced concrete vault that is cast in place with integral walls and floor with removeable lid. I want to do a structural analysis of the vault, but am unsure of how to combine the support from the end walls and the cantilever support from the floor.
Does anyone have...
Hello,
I have a hobby project of making a printing press (for relief printing). Instead of a typical "run between two rollers" press I am looking at making a press which would pressurize the area between the lid (pinned to the base) and a flexible membrane with the pressure transmitted to my...
Hello,
We have a building with what looks to be a brick foundation (layer of bricks turned perpendicular to wall with 2 brick deep wall underneath). A new sidewalk has just been poured up to the building foundation with expansion joing material between.
We have concerns about water and...
Where would I be able to find loads for construction equipment - in particular I need the load to use for an 8-ton vibratory roller. Also what factors of safety are used for construction loads - I have not heard or seen any standard numbers.
Thanks
I have a 6" or 12" ductile line going in that will need to come up over an obstruction. The line will only be feeding a single service, so I'm worried about freezing and want to insulate it. The line will be about 2' deep - frost line is at 42" - for maybe an 18ft length. I do not...
I've got a water distribution manifold chamber - 2 48" pipes coming in, each with 3 48"x36" crosses and a 48"x36" tee at the end. It was probably built about 1915 - all cast iron. We are looking at replacing some of the valving and adding a couple of 90s to tie the two...
I am working for a public water distribution department, but the projects I am involded in range all over the place. Any construction on our grounds I am going to be designing or watching over (have designed retaining wall and am going to watch over steel storeroom construction) and in the...
We have a two pressure system. The lower pressure is feeding mainly city residential areas. I was able to calculate some flow data this winter into the low pressure system from positions of the separator valve and pressures on each side. I am trying to get a general estimate of what summer time...
I am designing pressure relief off a 60" water main as it crosses a storm water channel. The 60" runs under one sidewalk and I am looking at the discharge pipe running parallel under the opposite sidewalk with 2 or 3 sets of pressure relief and isolation valves running between the two...
I am looking at options/cost for replacing a bridge. The bridge carries a 36" & 8" water main, 3" gas, and new may carry fiber or other communications. The options are to build a new bridge adjacent to the old, or to use the old abutments. The water main can only be down for a...
I am looking for information/manufacturers of surge relief valves to relieve water hammer from a 60" water main. Probably an 8" or 12" valve. I've tried searching the internet, but haven't been able to find anything specific to large water mains.
Thanks for any help.
I have a retaining wall 6 concrete blocks high with 5 layers of geogrid inbetween. I am looking at using two strengths of geogrid.
If I use the stronger geogrid for the bottom 3 layers. It will have sufficient strength to counter the failure slope starting at the the bottom of the 6th block...
What makes a good foundation for a retaining wall?
If bearing capacity of the soil is acceptable for retainging wall base, a foundation is not needed for any structural support, but just a flat base for the wall, drainage under the wall (if needed), and to get under the frost line?
All the...
I am designing a ~10' tall retaining wall to a rock hopper (wall will need to support loader dumping into hopper) using 2'x2'x4' concrete blocks with interlocking bumps - somewhat like legos. I am looking at what options I have for anchors.
One option I am looking at is a geogrid laid between...
