Life-Cycle Cost Analysis for Pavements. Philip Kresge Sr. Director, Local Paving

Transcription

1 Life-Cycle Cost Analysis for Pavements Philip Kresge Sr. Director, Local Paving

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3 Antitrust Policy Statement The National Ready Mixed Concrete Association assigns the highest priority to full compliance with both the letter and the spirit of the antitrust laws. Agreements among competitors that unreasonably limit competition are unlawful under federal and state antitrust laws, and violators are subject to criminal fines and incarceration, civil fines and private treble-damage actions. Even the successful defense of antitrust litigation or an investigation can be very costly and disruptive. It is thus vital that all meetings and activities of the Association be conducted in a manner consistent with the Association s antitrust policy. Examples of illegal competitor agreements are those that attempt to fix or stabilize prices, to allocate territories or customers, to limit production or sales, or to limit product quality and service competition. Accordingly, it is inherently risky and potentially illegal for competitors to discuss under Association auspices, or elsewhere, the subjects of prices, pricing policies, other terms and conditions of sale, individual company costs (including planned employee compensation), the commercial suitability of individual suppliers or customers, or other factors that might adversely affect competition. It is important to bear in mind that those in attendance at Association meetings and activities may include competitors, as well as potential competitors. Any discussion of sensitive antitrust subjects with one s competitors should be avoided at all times before, during, and after any Association meeting or other activity. This is particularly important because a future adversary may assert that such discussions were circumstantial evidence of an illegal agreement, when viewed in light of subsequent marketplace developments, even though there was, in fact, no agreement at all. If at any time during the course of a meeting or other activity, Association staff believes that a sensitive topic under the antitrust laws is being discussed, or is about to be discussed, they will so advise and halt further discussion for the protection of all participants. Member attendees at any meeting or activity should likewise not hesitate to voice any concerns or questions that they may have in this regard. Adopted by the NRMCA Board of Directors September 18, 2006.

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9 Life-Cycle Assessment

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14 Life-Cycle Cost Analysis

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18 Long Term Perspective = Wise Infrastructure Spending

19 Concrete s LCCA

20 Design Comparison Life Cycle Cost Comparison Version 3.1

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22 If AASHTO is good enough for the highway, it should be good enough for the parking lot. Or is it?

23 Parking lots streets/roads Load is in the interior Primary purpose is to store vehicles Lot may be a water collector May need to accommodate lighting, islands, landscaping

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25 A simple procedure: Given: Soil Strength Concrete Strength Traffic Demand Determines: Thickness Jointing Reinforcing (opt.) Subbase (opt.)

26 Design Comparison Life Cycle Cost Comparison Design concepts based on ACI 330 Version 3.1

27 CPA: NOT a Design Program A Promotion Tool Assist promoters in differentiating between asphalt and concrete parking lots Intended to provide comparisons of design and life-cycle cost Version 3.1

28 Concrete Pavement Analyst Uses Customer Inputs Default values in program are estimated averages for purpose of example and should be replaced with accurate, local values when available Version 3.1

29 Concrete vs. Asphalt Apples-to-apples comparison of pavement design should always be considered Quantification in $ allows for a better business decision on pavement choice

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43 Reference Library

44 Reference Library

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47 Design Details 26 different details Three formats.dwg.dxf.jpg

48 Perpetual Pavement

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50 Perpetual Payment Pavement

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56 Price Adjustment Clause (Indexing)

57 The True Cost of the Asphalt Escalator Clause

58 The Florida DOT Example FDOT Asphalt Design Frict. Course 5.5 Asphalt Ty-SP 12 Limerock Base Course (LBR = 100) FDOT Concrete Design 12.0 PCC Jointed w/ Dowels 4 ATPB non-structural 1 Asph. Structural Layer MEDPG Optimized Concrete 10.0 PCC Jointed w/ Dowels 1.5 Asph. Structural Layer M $ Initial Cost Comparison $36.3 3% $29.5 $ % 12 Type-B Stabilized Subgrade (LBR=40) 12 Type-B Stabilized Subgrade (LBR=40) 12 Limerock Stabilized Base (LBR=70) Subgrade Subgrade Subgrade Mechanistic Empirical Design Pavement Guide (MEDPG) provides optimized pavement design Std FDOT Concrete Asphalt Optimized Concrete Initial costs for 10 miles, 2 lanes & Shoulders. Costs include Pavement, base, and subgrade stabilization materials and labor Asphalt = $85.00 / ton, Concrete CY Price = $ ($94.62/CY + $10/CY for delivery) Slide Courtesy of Cemex, Inc.

59 ASPHALT S HISTORICAL 5.9% INFLATION GREATLY INCREASES THE ASPHALT COST OF OWNERSHIP Nominal Expenditures by Pavement Type for 10 Miles Total Cost Net Present Value M $ Concrete Rehab: Patch & diamond grind at years 30 and 45 Asphalt Rehab: 4 AC Overlay in years 14 & 28 2 Mill / 4 AC Overlay in year 42 $236.2 M $ $ % $34.3 $91.5 $62.4 $29.5 $30.3 $41.0 $ Design Asphalt: 6.5 AC (inc 1.5 PFC) / 12 Limerock (LBR=100) / 12 Limerock (LBR=40); Concrete: 10 JPCP / 1.5 AC / 12 Limerock (LBR=70) Initial costs - Pavement, base, and subgrade stabilization materials and labor (Asphalt = $85.00 / ton, Concrete = $94.62 / CY) Rehabilitation - Concrete activities based on MEPDG, Asphalt Activities based on standard FDOT Standards Current year costs for asphalt are inflated at 5.9% and concrete at 4% Rehab costs also include other Incidental Costs (striping, mob, etc) - Assumed to be 40% of Material Costs and Traffic Control - 5% of material cost, Engineering & Inspection - 5% of material cost Discount Rate=8% Asphalt is 84% more expensive when using historical inflation rates year Asphalt Concrete

60 ACTUAL 10 YEAR ASPHALT REHABILITATION SCHEDULES AND HISTORICAL 5.9% INFLATION ARE COMBINED Nominal Expenditures by Pavement Type for 10 Miles Concrete Rehab: Patch &diamond grind at years 30 and 45 Asphalt Rehab: 4 AC Overlay in years 10 & 20 2 Mill / 4 AC Overlay in years 30, 40, and 50 $373.7 Total Cost Net Present Value M $ $86.5 M $ $ % $118.7 $34.3 $29.5 $30.3 $32.6 $57.8 $20.1 $ year Discount Rate=8% Design Asphalt: 6.5 AC (inc 1.5 PFC) / 12 Limerock (LBR=100) / 12 Limerock (LBR=40); Concrete: 10 JPCP / 1.5 AC / 12 Limerock (LBR=70) Initial costs - Pavement, base, and subgrade stabilization materials and labor (Asphalt = $85.00 / ton, Concrete = $94.62 / CY) Rehabilitation - Concrete activities based on MEPDG, Asphalt Activities based on 2003 FDOT Pavement management records for interstates. Current year costs are inflated at 4% Rehab costs also include other Incidental Costs (striping, mob, etc) - Assumed to be 40% of Material Costs and Traffic Control - 5% of material cost, Engineering & Inspection - 5% of material cost Using FDOT history and historical inflation, asphalt is 152% more than concrete Asphalt Concrete

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64 Philip Kresge Sr. Director, Local Paving