Category Archives: Soil Nail Walls

The things we (and you) should ask when preparing and evaluating a shoring bid….

Common questions we ask ourselves when preparing a shoring bid:

1.Have we clearly communicated the scope of work included in our proposal?

2.Will the ground water table cause trouble?

3.How deep is rock?

4.Open hole drilling or casing?

5.Are there reasons to expect drilling obstructions?

6.Can sloping be used to avoid utilities and/or reduce shoring quantity?

7.What utilities will need to be located, exposed?

8.Shotcrete quantity?  Is our assumption reasonable?  Add and deduct.

9.Will rock be encountered at the face of excavation?  Line drilling, blasting, trimming in PWR/rock.

10.Aesthetics of permanent shotcrete?

11.One side forming?  Foundation wall overpour.

12.Will the owner have easement(s)/permission to drill under adjacent property/ROW?

13.Access, ramps, phasing of ramps?

14.Are there environmental concerns that could impact safety and/or scope of work, e.g. Brownfield sites?

15.LF of micropiles in base bid. What triggers add/deduct?

16.What is our client’s bid situation?

17.Are our assumptions reasonable?

18.What information do we need to get started?

Subsurface South Carolina Construction News

Subsurface is featured in SC Construction News

Engineers build successful Carolinas shoring construction business with participation of employee owners

South Carolina Construction News special feature

Formed in 1995 by three engineers, two structural and one geotechnical, Subsurface Construction Company LLC has grown over time to two regional offices, a staff of 35 and the capability of handling multiple, complex shoring and deep foundation projects at once.

The three founders started in the business as consulting engineers in Raleigh, NC, designing shoring systems for installation by contractors. Greg Sullivan, P.E., Subsurface’s managing member, says the group recognized that there were very few shoring contractors in the area, saw the market need, and launched Subsurface.

“We began in the shoring construction business by installing our driven soil nail walls, a unique shoring system that was developed by our company,” he said.

Read the full article >