No wrong answers, here. I'm curious to know from other concrete engineers:
How do you define "free of vibration" during concrete testing when there is no such thing on Earth, and not even close on a construction site?
Working on a large project and keep adding tanks and tanks. I'm looking to set up a humid room. I'd like to do it with a temp building. Someone out there has gone through this and wants to help me out, I know it! I wonder what methods didn't work and which ones did - both for humidity and...
I hope this is right forum... What do you guys make of MVER tests for elevated slabs that are not new (say on the order of 5-10 years old)? I recently tested an 8 year old elevated slab the size of a classroom in a building that is entirely conditioned the same and got an average reading of...
I used to have this great packet of info for wick drains and now I can't find it for anything. Does anyone have a nice tidy reference to design and settlement calcs for wick drains?
One of my colleagues asked me this: School wants to put a retaining wall footing 6 inches above an existing sewer pipe. He already tried the "move the wall" recommendation. They are expanding the footing to reduce pressure on the pipe. Currently, they have 5-7 stone over the pipe. Colleague...
I have never performed culvert settlement analysis before. I will have (4-foot to 8-foot) box culverts and (36-inch to 54-inch) pipes (RCP and CMP). My predecessor assumed 75%-full culverts and wrote up recommendations to limit settlement to one inch. He/she also neglected wheel loads. It...
Does anyone have a reference discussing the effects (or lack thereof) of operating heavy construction equipment in the proximity of freshly-placed concrete?
ASTM requires a new test be run for labs testing high-strength concrete in accordance with C617 that shows that 15 cylinders capped with sulfur exhibit strength within 2% of strength of 15 ground cylinders. In lieu of running these tests, the lab may choose to use the manufacturer's test data...
A 2-story masonry-walled building's continuous footing is installed. The footprint sits on a 20-foot fill pad of which I observed installation. On slope has been shear cut parallel to one side of the building with the crest approx 4 feet away from the footing. A 15-ft shear cut at one corner...
I'm a geotech, so please forgive the remedial question (ok, I'm a new geotech). Where can I find typical structural loads for building types. I can figure the loads out based on construction materials et al, but I'm too lazy to do that just to write a prelim geotech report. Any references?
I would like to know the rationale behind exempting flow-through process USTs from UST regulation. I'm not for or against it - just would like to know what the reasoning is. Anyone have a clue?
I'm not structural, please forgive the novice question. When bars come out of the grade beam and are lapped into the column, how close does the grade beam's vertical dowel need to be to the column's vertical bar? Are they separate altogether (ie is the only concern the development length into...
Anyone have info on acceptable factors of safety for uplift in detention ponds (I got a 2' clay liner with a small layer of soil above and 1.5' head difference) Water Mgmnt wants FS of 2. I get 1.3 or so. Anyone know of generally accepted standards or calc procedures that allow the FS to go...
