Earthwork/foundation/basement construction, soil support: Scaffold at center supports reinforcing ironworkers erecting/tying reinforcing steel for shotcrete reinforced concete basement wall to support earth embankment created by basement excavation. The resulting reinforced concrete retaining wall will be the same as the completed reinforced basement wall in the background. The large bore steel diagonal pipe/tubes support the lower part of the wall until the shotcrete has been placed and cured, at which time tie-backs in tension extending into the soil will provide support for the wall, as shown in the wall in the background.
The side of the sloped soil embankment on the right is supported by vertical H-section soldier beams that support timber breastboards fitted between the flanges of adjoining H-sections. In addition, the two taller soldier beams are supported by steel pipes/tubes in compression pressing against soldier beams of the far right embankment support. In lower foreground is ramp access to bottom of excavation, by which trucks and equipment enter and leave the hole. Pallazo, Westwood, Los Angeles, California January 2006.

Earthwork/foundation/basement construction, soil support: Scaffold at center supports reinforcing ironworkers erecting/tying reinforcing steel for shotcrete reinforced concete basement wall to support earth embankment created by basement excavation. The resulting reinforced concrete retaining wall will be the same as the completed reinforced basement wall in the background. The large bore steel diagonal pipe/tubes support the lower part of the wall until the shotcrete has been placed and cured, at which time tie-backs in tension extending into the soil will provide support for the wall, as shown in the wall in the background.
The side of the sloped soil embankment on the right is supported by vertical H-section soldier beams that support timber breastboards fitted between the flanges of adjoining H-sections. In addition, the two taller soldier beams are supported by steel pipes/tubes in compression pressing against soldier beams of the far right embankment support. In lower foreground is ramp access to bottom of excavation, by which trucks and equipment enter and leave the hole. Pallazo, Westwood, Los Angeles, California January 2006.