Pipe and Excavation Contracting Flashcards
Load Factor?
- Bank Volume \ (Bank Volume + Swell %)
the advantage of an “U” blade over an “S” blade is?
- Holds more material.
Best piece of vibratroy compaction equipment in situations where you ahve a wide trench and no cross lines?
- Sheeps Foot Roller
the percent of a slope which rises at a 45 degree angle is?
- 100%
Easiet type of rock to rip?
- Sedimentary.
Level of underground water?
- Water Table
Soil tha thas the max amoutn of water it can hold?
- Saturated Soil
When positioning a trench box, center it over the pipe. TO maintain safety in the ditch, the maximum height above the pipe you should install a trench bos is ______?
- 2.5’
Best type of equpment to use when diggin a trench in soft soil?
- Tracked Backhoe.
The advantage of Nuclear compaction testing?
- Can test without removing sild from the site. I.E. undisturbed.
Density of soil compantion test that requires no drilling?
- Nuclear Density.
The easiest compation method?
- Puddling.
The type of soil that can be excavated with vertical side slopes remaining intact is ________?
228.
The term sub-grade identifies?
- The surface elevation prior to palcign any surface material. (Carpentry Book).
Increases productivity of a self-loading scraper in muddy soil?
- A dozer pushing on the push blocks at the rear of the bowl.
