HYDRO-EXCAVATION
Applications Include
Subsurface Utility Engineering (S.U.E)
Utility Locating (Potholeing)
Trenching
Cold Weather Excavation
Remote Access Excavation
| Hydro-Excavation is a non-mechanical and non-destructive process which combines pressurized water and a high flow of moving air to simultaneously excavate and evacuate native soils at a controlled rate. The soil and water slurry are conveyed via an 8" tube to a truck-mounted debris tank. This process allows for quick, clean and precise evacuations which require less backfill, less labor force, less restoration, and less environmental impact than conventional digging methods. A controlled flow water stream allows for surgeon-like accuracy. While removing only material necessary for repair or inspection, minimal material needs to be removed when compared with the large, less-than-accurate excavator or back hoe bucket. The Ted Berry Company operates (3) hydro excavation units ranging in size from 7 to 15 cubic yard capacities. Our operators are trained in utility locating and subsurface safety and damage prevention annually. |
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Remember there is a 18" safety zone around all utilities
where NO MECHANICAL excavation is allowed.
The only exclusion is for hydro-excavation.
check out www.oktodig.com.
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Cost Breakdown Comparison Traditional Excavation Vs. Hydro Excavation
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| In most cases, yard for yard comparison between a Hydro-Excavator and a bucket machine favors the bucket machine. However, the actual removing of the dirt is only a small part of the overall job. Let us look at the following job:
Acme Utility Co. has contracted you to uncover a 2' x 2' area they believe to be 6 feet underground. Backfill with clean material and restore to original condition.
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| Option 1: Conventional Method:
Open hole with sloped sides to allow for legal hand digging for exposure of utility.
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Operation
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Time
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Cubic Yards
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Crew
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Amount
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| Unchain, unload & stage equipment |
0.5 hr.
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| Uncover utility |
3.0 hr.
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13.3
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4
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| Backhoe, Dump truck |
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| Backfill (compacted) |
2.0 hr.
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12.1
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| Restoration (196 sft) |
1.5 hr.
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1.2
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| Reload Equipment |
0.5 hr.
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7.5 hrs.
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26.6
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| Option 2: Hydro-Excavation Process:
Open hole for exposure of utility. There is no need to slope because this process keeps workers on the surface, not in the excavation.
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Operation
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Time
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Cubic Yards
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Crew
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Amount
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| Park truck, turn on vacuum & water |
3 min.
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| Uncover utility |
0.5 hr.
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0.89
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2
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| Hydro Excavator |
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| Backfill (compacted) |
25 min.
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0.89
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| Restoration--not necessary; sod was cut & peeled back at start of excavating. |
1.5 hr.
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1.2
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2.5 hrs.
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3.0
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These tables illustrate the time, labor and cost savings between the different methods. Also note that Crew #1 will be occupied on their site almost all day; meanwhile Crew #2 has plenty of time to mobilize to multiple sites.
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Call today to learn more!
