Search results for query: *

I would check the specs and/or details. Differing site conditions may require different support/drainage courses under slabs/footings. If you have access to the geotechnical report, check for recommendations there also.

Follow-up. It appears that the duct bank design depicted in your posted image is no longer being produced. At least I could not find any precast concrete company still producing that particular style. View the video to see the new-improved (watertight) styles...

These are used in my part of the country as utility duct banks for running multiple utilities (elec, tel, fiber optic, cable tv etc.) in one trench. These look like they were not used as a retaining wall, just left over from previous work or a project that never got passed the product delivery...

Thanks to all. It doesn't matter much any more. The job has been bid and we were not successful. If I run into this situation again, I will have the naturally occurring soil nuked for in place density. Again, thanks to all.

Thanks, it looks like opinions vary. I normally work with Georgia red dirt and rock. Sand/sand clay mixtures are out of my league, estimating wise.

It's not just the swell factor, there is a good bit of compacted fill on the site. The shrinkage factor there will also affect the number of loads hauled off.

Thanks, you confirmed my thoughts. The excavated volume is in the 200,000 cy range and most of it must be trucked off the site and wasted. The shrinkage factor will have an equally important bearing on the total number of truckloads hauled. The haul is long enough to have a serious cost impact...

Does anybody have a good rule of thumb for shrinkage factors for sand. The material is described as coarse to fine with "some" clay. Moisture content is unknown. Previous development is unknown but, thought to be original ground. What I am looking for is the difference between the volume of...

The answer to your question requires a lot more information.. What type of "dirt"? Sand will have a different weight per unit of volume than high clay content soils. Soils with high percentages of rock fragments may also have different densities. etc. etc. I'm not sure I understand why you...

I am looking at installing several hundred lf of sanitary sewer in the Charleston, SC area. The line will be 8 to 13 feet deep in sand and as much as 3 ft below sea level. I have done a couple of similar jobs in the past (1988 & 1991) in Savanah, GA, but I do not have any idea what wellpointing...

Excuse me! I typed that wrong.. It should have read 1/2"/ac

Like a lot of things my government does, the 67 cy per acre is an arbitrary number (2"/ac) that was derived because no viable determination of of silt run-off culd be calculated. I love my government.

I bought carlson, and not being an autocad expert, founf it extremely difficult to use. After a few months of trying to learn the ins & outs of carlson, I then bought Paydirt. The learning curve was short and sweet. There are issues in every earthwork program I have used. I, being an independent...

There are many earthwork programs availabele. However, unless you are willing to to spend a lot of time learning to use the program, (instead of building the project), you may be overloading yourself. A good earthwork program, digitizer, computer and printer can cost several thousand dollars. It...

there are several usb to serial converters (as well as usb to parallel converters) available at Comp USA, MicroCenter, etc.

Check with the Construction Estimating Institute of America. They have a "Civil Bluprint Reading" home study course.