We have a bridge column with #11 bars in it.
Per the plans, the column bars were fully developed into the bent cap. The contractor accidently cut some of the bars 1ft short.
The contractor's proposed fix is to add mechanical couplers to the bars and then have ~1ft extensions. (the...
I have a large cast-in-place multibox culvert that will be constructed with varying fill on top of it. At the shallowest point, it will have ~5ft of fill on top, and at the deepest it will have 15ft of fill on top.
We have called out BOTH a seal slab and a Cement Stabilized Sand (CSS) pad...
I have an existing 60" water pipe that was fabricated and installed in ~1986. The pipe is an emergency overflow line for a small stream that sits empty 99% of the time. But every now and then we get a 100yr+ storm event and the pipe carries a gravity flow.
Per the original construction...
I've gotten deep in the weeds on Sheet Pile Connectors.
What is the difference between a "Larrsen" connection type and a "Larrsen-Omega?"
It looks like the Omega connectors are just a general purpose connector that will let you do a range of corner angles.
I want to make sure I'm...
We are doing some wall modifications to an existing split face CMU building.
There is an existing generator that is being removed from a building. Once it is removed, we need to ‘brick-up’ or fill-in all the existing vent & louver openings in the CMU.
Does anyone have a resource for repair...
I have a concrete pump station project under construction. The material lab has flagged a specific test for failing the field slump test. At the same time, the cylinder passed the 28-day break test.
The mix specification is one of the State highway department's mixes, so it is well documented...
We are providing extensive aesthetic improvements to an existing bridge & roadway crossing.
The improvements include cantilever retaining walls ranging from 4ft tall to 20ft tall, along with 20ft tall planter boxes supported by drilled shafts.
We have received the utility layouts from the...
Does anyone have a good detail or idea on the easiest way to transition from steel sheet piles to a concrete retaining wall?
Please see below image. We have an existing concrete retaining wall and we are going to be butt-ing up proposed sheet piles to it. The walls are located at the edge of...
We are going to design a small timber headwall. The headwall wall will be partially submerged in fresh water 100% of the time. The headwall is also a temporary structure that will have useful life of 2 years or less.
The client has given me a sample sheet piling board from an older project...
I'm curious to see how people call out FRP gratings on their plans.
I'm very familiar with steel grating and it's easy to call out on the plans: "HDG Type 19-4 Grating with 1 1/2" bearing bars" etc. etc..
Once you get into the FRP and plastics, it seems to get more complicated; and it seems...
I have a resume from someone that just graduated from a USA civil engineering program at a NON-accredited school.
The school is "in-process" on their ABET accreditation, but does not have it yet.
Am I correct that the job candidate will NOT be able to sit for the FE and PE exams? They will...
I'm designing a steel platform that will have electrical equipment on it. The platform is located very near the beach, so will see significant wind load during it's lifetime.
Below is a picture of similar platform. My platform is going to have an electrical transformer and a ~14'x9' skid...
I was out running errands this afternoon and went to the Office Depot near my home.
While walking across the parking lot, I noticed the condition of the CMU wall. See below.......the entire wall is cracked. At first I though it was an architectural treatment of some sort or split faced CMU...
I have a small 1-story control building for a wastewater treatment plant that houses blowers and other mechanical equipment.
The 8" thick hollowcore roof of this structure supports a crane rail and a rolling 2-ton hoist. My employer has used this setup for many years, but I have never felt...
We have an existing 60" steel pipe that conveys excess rainwater across a ditch. We are going to widen the ditch and expose more of the pipe. (We are also adding another bentcap to support the pipe)
The pipe was installed in 1986 and I do not think it has been painted since then. (see below...
We are providing a structural design fee estimate for an inverted siphon that will go under a roadway or stream. From the structural point of view, it's basically just a couple buried junction boxes.
We have been provided a go-by project to help us work up a fee. I have studied the go-by...
I need to put together a preliminary cost estimate for a pre-cast parking structure.
Does anyone know of any good resources where I can find cost data?
We have been asked to provide a conceptual layout and some preliminary cost data so that our client (governmental agency) can allocate money...
I have a ~50'x50' ribbed foundation for a storm water pump station. The slab will be located approximately 15 ft below grade.
The ribbed slab is 12" thick with 2 mats of reinforcing; and the beams extend an additional 16" deep, making the total section depth 28" (see below).
Our contractor...
We have a wastewater treatment plant under construction and the contractor has submitted and RFI for the launder trough in the clarifier tank.
They would like to replace the connection below with a drilled & epoxied connection. The loads are light. I have not done the calc in a while, but if...
I do not have a lot of experience with pipe piles, but we have a project where the soil conditions were so poor that my normal go-to of drilled shafts will not work.
The geotech has recommended 18" x .375" wall thickness driven piles.
These are dry-land piles in a fresh water environment. For...
