Open Source Helical Piers Design Guide: Difference between revisions
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* | *First Principle Calculations: | ||
*Steel shaft at 2-7/8" diameter and .217 wall has about 1.8 sq in of area according to [[Area Calculator]]. J55 alloy at 55ksi means that ultimate compressive load with 0 margin of safety (see [[Factor of Safety]]) is about 100k lb. | |||
=Links= | =Links= | ||
*[[Open Source Helical Piers]] | *[[Open Source Helical Piers]] | ||
Revision as of 16:58, 19 September 2020
Composition
- Connector Fitting and pin
- Flighting
- Shaft
Shaft
- First Principle Calculations:
- Steel shaft at 2-7/8" diameter and .217 wall has about 1.8 sq in of area according to Area Calculator. J55 alloy at 55ksi means that ultimate compressive load with 0 margin of safety (see Factor of Safety) is about 100k lb.