VACUUM EXCAVATION Tricks of the Trade Types of Vacuum Excavation - PowerPoint PPT Presentation

VACUUM EXCAVATION Tricks of the Trade

Types of Vacuum Excavation • Air Excavation • Hydro Excavation

Air Excavation vs. Hydro Excavation ---------------------------------------- ---------------------------------------- Pros Pros • • Works well in most soil types Very effective in most soil types • • Low or no utility line damage Hot water burners available • No need for trips back to shop Cons • Constant supply of air • Capacity limits, refilling often • Reuse spoils for backfilling • Cannot use spoils for backfill Cons • Possible need for CDL Tanker • Dust Endorsement • Poor performance in frozen soil

Locate Utility Lines Verify EXACT… No more “Blind Digs!” • Locations • Depths • Sizes • Condition • Material • Fittings of underground utilities.

Utility Lines Located... 2” Gate Valve

Maintenance Repair and Replace … • Service Boxes • Replace all or part of the box • Service Rods • Broken Rod • New Stainless Steel Rod • Valve Boxes • Replace all or part of the box • Valve Nuts • Replace Rounded or Missing Nuts

Maintenance

Cost Comparison Standard Vacuum Inside Excavation Excavation Valve Box 4 Hours Average 2 Hours Average 1 Hour Average • • • 4 Employees 2-3 Employees 2-3 Employees • • • Crew Truck/Trailer Crew Truck Crew Truck • • • Backhoe Vacuum Excavator Vacuum Excavator • • • Dump Truck 1-Ton Valve/Service Tools • • Shoring/Shielding Valve/Service Tools • • Fill Materials Fill Materials • • Pavement Pavement • • Opening Permit Opening Permit = $1,000 minimum = Around $200 = Around $100

Valve Repairs over 12,000 valves in our system Need for working valves : Efficient shut downs of mains Valve Repairs  Bent box  Rounded nut  No nut  Leaky bonnet Currently, there are 243 valves that need to be fixed

Service Box Repairs over 11,000 services in our system Need for working service boxes: shut off water for non payment, winter birds, foreclosures, home repairs, meter replacements Service Box Repairs  Bent box, bent rod  Broken rod  Curb stop won’t turn  Can’t turn rod Currently, there are 242 service boxes that need to be fixed

OUR FIRST VACUUM 2000 & 2010

Different vacuums for different jobs First Vacuum for repairs 2006 Newest vacuum for repairs 2016-2017

SCOUP or the SHOVEL

Knuckle “UNIVERSAL” WRENCH

TOOLS

Grinders needed Vertical and HORIZONTAL

Solid Li Lightweight Air ir Supply Ali lignment Tools

More helpful tools

A MUST FOR TREE ROOTS

Removing a rod from service box

Service Box Repairs Dig ig Vacuum • 4 person crew  3 person crew • Time: 3 hrs (2 or 3 per day)  Time:1½ to 2 hrs (4 or 5 per day) • Dig Safe Required  No Dig Safe Required • Trench: 6 by 4 feet  Trench: 2 by 2 feet  Average Cost: $105 • Average Cost: $931

VACUUM JOBS 2014-2017 250 200 198 200 167 155 150 150 135 100 50 22 15 12 12 11 8 8 6 5 4 0 2014 2015 2016 2017 vac S/B vac V/B dug S/B Dug V/B

WORKING WITH THE VACUUM(S)