Up until recently, the biggest steel H-Pile section you could get was an HP14 weighing up to 177 lb/ft. But ENR reports that manufacturers are now rolling steel H-Piles in 16 and 18 inch depths. The HP16 sections range from 88 to 183 lb/ft and the HP18 are available in 135 to 204 lb/ft. These new sections open up a range of possibilities for deep foundations, shoring systems and excavation bracing. The American Institute of Steel Construction listed these products in their 2010 manual and they have also been approved by ASTM. They can be found in the product literature of Nucor-Yamato Steel. [Source: ENR. Image: http://taesancorporation.trustpass.alibaba.com/productshowimg/111392582-101499462/H_Bearing_Pile.html]
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Geo-companies in ENR’s 2017 Top 500 Design Firms
ENR’s annual top 500 design firms list for 2017 is out. These rankings are based on revenue for design services in the previous calendar year. Last year I extracted a subset of the list to see rankings of firms that are strong in geotechnical / geological related services, so I decided to do it again this year. I included firms that self-identified as geotechnical firms, as well as engineering firms that I know to have a strong geo emphasis. I’m sure there are some that I missed. I also included some of the major A&E firms that provide these types of services. Accordingly, it’s still a bit subjective on who is included. So here is the list of top Geo-Companies of 2017 (along with their change in ranking relative to 2016):
- 1 – AECOM, Los Angeles, Calif. (No change from 2016)
- 3 – CH2M, Englewood, Colo. (No change from 2016)
- 5 – TETRA TECH INC., Pasadena, Calif. (+2)
- 7 – AMEC FOSTER WHEELER, Atlanta, Ga. (-2)
- 8 – HDR, Omaha, Neb. (+1)
- 10 – STANTEC INC., Irvine, Calif. (+8)
- 13 – ARCADIS NORTH AMERICA/CALLISON RTKL, Highlands Ranch, Colo. (-1)
[Editor] Click through for the rest of the Geo list! [/Editor]