Project & Crew Information:

  • General Contractor: Cone & Graham
  • Rebar Contractor: Shelby Erectors
  • Union: N/A
  • Crew Size: 5-person
  • Shift Duration: 10-hour
  • Products Used: TyBOT & IronBOT
  • Deployment Dates: February 2023

TyBOT Performance Metrics:

  • Actual Ties: 33,404 (74% Total)
  • Active Production Hours: 35
  • Active Tie Rate: 954 Ties/HR
  • Total Equipment Hours: 70
  • Active Production Rate = 50%
  • Equipment Utilization Rate = 100%

ACR Project Scope:

  • 3-Span Bridge Deck
  • Bridge Deck SF: 25,868
  • Width: 64’ 8”’
  • Length: 400’
  • Horizontal Deck Rebar: 146,361 LBS
  • Total Deck Intersections: 45,010
  • Tie Specs: 33% Bottom / 33% Top

IronBOT Performance Metrics:

  • Actual LBS Placed: 130,952 (90% Total)
  • Active Production Hours: 24
  • ActiveP lacement Rate: 5,561 LB/HR
  • Total Equipment Hours: 48
  • Active Production Rate = 50%
  • Equipment Utilization Rate = 69%

Budget w/o ACR Actuals w/ACR Increase / (Decrease)
Productivity (LB/MH) 264 420 59%
Customer Crew Manhours 554 349 -37%
Duration (Shifts) 14 7 -50%
Manpower (FTE) 5 5 0%
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Location:

  • Little Rock, Arkansas

Client:

  • D.T. Read

General Contractor:

  • Kiewit Corporation

Completion Date:

  • April 15, 2024

Deck Width (FT.):

  • 100

Bridge Deck Area (SQ. FT.):

  • 136,650

Deck Rebar (LBs):

  • 1,355,911

Total Ties:

  • 381,142

Tie Requirements:

  • 50% Bottom / 50% Top

IronBOT LBs Placed:

  • N/A

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TyBOT autonomous rebar tying robot on a bridge deck, viewed from the side