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Cal Maritime Vallejo
A Soil-Mec SR 30 was used to drill the retaining wall piles, and a long reach excavator along with a smaller excavator on the slope was used to drill the stairway piles. WCD installed 83 each 24” x 16’ at the retaining wall and 36 each 18” x 10’ piles at the stairs into Sandstone Bedrock.
Stern Grove
The work consisted of mass excavation, install 28 each W16 x 89 x 35’ steel beams in 30” drilled shafts with structural and lean concrete, 26 each 192 Kip Tieback Anchors x 75’ long with 10’ – 14’ high shotcrete lagging to retain the slope.
San Lorenzo Creek Stabilization
The work consisted of mass excavation, install 32 each W16 x 89 x 35’ steel beams in 30” drilled shafts with structural and lean concrete, along with 10 each 30” x 20’ secant piles, 29 each 240 Kip Tieback Anchors x 70’ long with 10’ – 18’ high pressure treated wood lagging to retain the slope.