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Augusta Richmond GA
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YEAR: qq
BOX NUMBER: O?;
FILE NUMBER: \ l\ ~
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"\F~OM ~ B~SH FJELD
PHONE NO. 706 7981551
Jun. 10 1999 04:16PM P2
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WORK AUTHORIZATION FORM
BUSH FIELD AVIATION COMMISSION
Work Authorization for Professional Services
A.LP. NO. 3-13-0011-18
(Project Identification No,)
Eight (8)
Work Authorization No,
AIRFIELD PAVEMENT EVALUATION STUDY AT THE AUGUSTA REGIONAL
AIRPORT (BUSH FIELD) (Project Title)
It is agreed to undertake the following work in accordance with the provisions of our MASTER
AGREEMENT for Professional Services dated May 1, 1997.
A. Description of Assie:nment:
The CONSULTANT shall provide special services, as described in Exhibit "e", Section II, of
the MASTER AGREEMENT, for the Airfield Pavement Evaluation Study at the Augusta
Regional Airport (Bush Field), herein after referred to as the PROJECT, as described in
Attachment I to this Work Authorization.
B. Basis of Compensation/Period of Services:
1) Compensation:
The CONSULTANT shall be paid the lump sum fee of Ninety
Nine Thousand Nine Hundred Eil!btv Four Dollars and No
Cents ($99.984.00) as described in Exhibit "F", Section I, of the
MASTER AGREEMENT. A breakdown of this lump stun
amount is shown in Attachment 2.
2) Schedule:
The services described under Section A above shall be completed
within one hundred and eighty (180) days after the Notice- To-
Proceed is issued for the PROJECT, excluding OWNER review
time.
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Agreed as to scope of services, time schedule, and budget:
RECOMMENDED BY:
For BUSH FIELD A VIA TION COMMISSION
Date:
Date:
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erk
. Attachments: Attachment I - Scope of Services (4 pages)
Attachment 2 - Airfield Pavement Evaluation Study Fee (1 page)
\\caenlS4000 1 \airpons\CLIENTS\Bush\Pavement Maint. Plan\ W,A, No. 8.doc
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ATTACHMENT 1
Work Authorization No.8
SCOPE OF SERVICES
AIRFIELD PAVEMENT EVALUATION STUDY
AUGUST A REGIONAL AIRPORT at BUSH FIELD
The Scope of work involves perfonning an airfield pavement evaluation study to establish a
pavement maintenance program for all airfield pavements at the Augusta Regional Airport at
Bush Field. The proposed work includes the following tasks:
Task 1. Record Drawing Review and Inventory
Task 2. Pavement Network Definition and Field Map Preparation
Task 3. Visual Field Survey of Pavement Condition
Task 4. Testing of Existing Pavement
Task 5. Pavement Condition Data Analysis
Task 6. Final Map Preparation
Task 7. Report Preparation
Task 1.
Record Drawing Review and Inventorv
The consultant will conduct a review of all record drawings to determine the existing structure,
age, and physical boundaries and locations of the pavements being evaluated, The Owner shall
make all airfield pavement record drawings available to the Consultant for review. After the
initial pavement inventory has been completed, a preliminary field map (developed using
AutoCAD Release 14) will be prepared by the Consultant. The Consultant will send the map to
the Owner requesting a review of the collected information. After reviewing the map, the Owner
shall advise the Consultant of any additions or modifications that the airport is aware should be
made.
Task 2.
Pavement Network Definition and Field MaD Preparation
During this work task, the information obtained from the pavement inventory, and later from the
field inspections, will be used to define the pavement network for the Airport. All network
definition activities will be conducted in accordance with the procedures outlined in the FAA AC
150/5380-6 and ASTM Standard 05340. These documents describe the three levels of network
definition: facility (branch), feature (section), and sample unit.
A) Facilitv (Branch). A facility (branch) is an area of pavement that serves a distinct function.
On the airfield, a facility typically represents an entire runway, taxiway, apron, or helipad.
B) Feature (Section). Because of the disparity of characteristics that can occur across an entity
as large as a facility, it is further subdivided into units called features (sections). A feature is
identified as a portion of the pavement which has uniform construction history, pavement
structure, traffic patterns and condition throughout its entire area. The best guideline to use in
deciding the location of feature breaks is to think of the feature as the "repair unit," or a portion
Airfield Pavement Evaluation
Augusta Regional Airport
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of the pavement that will be managed independently and evaluated separately for pavement
maIntenance and rehabilitation.
C) Sample Unit. Features are further divided into sample units for PCl inspection purposes. A
sample unit on a concrete pavement is 20:i: 8 slabs; a sample unit on an asphalt surfaced
pavement is 5000 square feet :i: 2000 square feet.
Field Map Preparation
Network definition maps, showing the location of facility, feature, and sample unit boundaries,
will be prepared for the airport. The map will be based upon the existing Airport Layout Plan
(ALP), and existing aerial photographs to be provided by Owner. The map will be developed to
scale, in new files by digitization and drafting, to indicate all runways, taxiways, aprons, and
buildings on the airport. The field map will be prepared using AutoCAD Release 14 software.
Each facility and feature will be identified on the map by a facility and feature number.
The sample units inspected during the PCl survey will be identified on the map(s). Prior to
the field work, the sample units identified will be those selected using stratified random selection
procedures outlined in FAA AC 150/5380-6; after the field work is completed, these maps will
be updated to show the random and any additional sample units that were actually inspected.
All network definition activities will be conducted by the Consultant using data collected during
[he systems inventory task. Copies of the network definition maps, along with the corresponding
records review information will be submitted to the Owner for review.
Task 3.
Visual Field SurveY of Pavement Condition
This task involves the field evaluation of the surface condition of the pavements. The PCI
procedure is the standard used by the aviation industry and the military to assess pavement
condition. The procedure is described in FAA AC 150/5380-6.
A statistically determined sample plan in each pavement feature will be inspected in the field by
a survey team that will be comprised of an experienced senior pavement engineer and assisted by
either another civil engineer or engineering technician. During the field PCl inspections, the
survey crew will take photographs of the pavement condition at the airport. The following table
summarizes the statistically derived inspection sampling rate:
Pro Dosed Inspection Sampline Rate
Assumed Sample
Features ADprox. Size Units
Survey
Units
Facility
Runway 8-26
Runway 17-35
Taxiway "A"
Taxiway "B"
4 150' X 6,001' 180
4 150' X 8,001' 240
2 75' X 2,900' 44
2 90' X 630' 11
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Airfield p:lvement Evaluation
Augusta Regional Airport
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Taxiway "C" 2 75' X 5,400' 81 38
Taxiway"D" 2 60' X 560' 7 7
Taxiway "E" 4 60' X 5,540; 67 35
Taxiway "E" 2 60' X 245' (X 2) 6 6
Connector Taxiways
Main Apron 4 275' X 2,800' 154 52
Other Aprons 8 600' X 1,450' 174 80
100' X 500 10 5
Hangar Decks 3 18 15
Task 4. Testinl! of Existinl! Pavement
The Consultant's subcontractor shall perform a thorough field inveStigation of the existing
airfield pavements by means ofhoth destructive and non-destructive testing. The destructive
testing will consist of cutting cores through the existing pavements to verify pavement
component layers and thicknesses. The non-destructive testing will consist performing Falling
Weight Defleclometer (FWD) testing upon each pavement in accordance with ASTM 0 4694.
The FWD data will be input into a specialized computer program to reliably extrapolate the
sampled data to 100% of the airside pavements, and a Pavement Condition Index (pCT) will be
assigned [0 each pavement.
Task 5.
Pavement Condition Data Analvsis
After the all field data.has been gathered, the Consultant shall conduct an analysis of the data.
The objective of the analysis will be to assign a PCI value to each "feature" and to develop a
pavement maintenance/rehabilitation plan.
Analysis of the PCl DaTa
Two aspects of the pcr data will be analyzed: the composite index, the type of distress, and the
rate of deterioration.
Composite Index. The PCI value for each sample unit will be calculated and section PCl values
will be extrapolated based upon the sample unit information. The PCI provides a general sense of
the pavement condition and the magrutude of work that will be required to rehabilitate the
pavement. A pel of 100 indicates that a pavement is exhibiting no visual signs of deterioration.
A pel of 0 is essentially a failed pavement.
Type of Distress. The types of distress identified during the PCI surveys will also be
analyzed. The type of distress present provides insight into the cause of the pavement
deterioration. Distress types are characterized as load-related (such as alligator cracking),
climate-related (such as weathering and raveling), and materials-related (such as durability
cracking). Understanding the cause of distress allows a rehabilitation alternative to be selected
that corrects the cause and thus eliminates its recurrence.
Development of a Pavement Mainrenance/Rehabilitation Program
Aidield Pavement Evaluation
Augusta Regional Airport
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Once the airport pavement condition distress data has been collected and analyzed, a reporr
setting forth a suggested maintenance/rehabilitation plan will be developed. The reconunended
maintenance/rehabilitation will be developed by a senior pavement engineer and will be based
upon his field survey and an evaluation of the FWD data.
Task 6.
Final MaD Preparation
The information contained in the database and the results of the analysis will be used to prepare a
final map for the airport. The map will show the location of each facility, feature, and sample
unit locations and will be incorporated into the final project report.
Task 7;
Report Preparation
Three copies of a fInal report will be delivered to the Owner and will include the following
items:
'r A description of the general condition of each pavement facility;
~ Calculations and a pcr value assigned to each pavement feature based On the visual field
survey;
~ PCl value assigned to each pavement feature based on the FWD field results;
) Any significant finding discovered on each feature;
) Results of the FWD data analysis that estimates the remaining strucrurallife of each
pavement;
) Recommendations for repairs/maintenance to pavements ( which may include
strengthening);
) An 11"x 17" map depicting each facility, feature, sample unit location and pel value; and
}:- Appropriate photographs of pavement within each sampled feature area.
Q:\CLlENTS\Bush\Pavemenl Maint. PlanlScope of Scrviccs,doc
Airfield Pavement Evaluation
A ..Oll~t,. R p.o;onal Aimort
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ATTACHMENT 2
WORK AUTHORIZATION No.8
BUSH FIELD AIRPORT, AUGUSTA GEORGIA
AIRFIELD PAVEMENT EVALUATION STUDY
P:avernenr Record P3"""'''''! N.twork Field Pavemenl COlldition Final Map Repon TOTALS
Oflwiuij lnvanlory O.rlllilioo 8< Map SUN">, Oaln MalYlis preJ)llfDtion P"'pl>rntion
#
CLASSIFICA TION HOURS HOURS HOURS HOURS HOURS HOURS HOURS
Projecl Manager I 2 0 4 0 2 9
!>enior Pavemenl Engineer 16 6 80 44 R 24 178
Civil EIIgineer g 4 80 20 0 8 120
Technician 4 8 0 0 24 0 36
Technical As$i$tant 0 0 0 0 0 35 35
Toral Hours 29 20 160 68 32 69 378
TllSk CoSt $2,491 $1,500 $14.160 S6.328 $1,880 $4,773 $3 \, 132
OIRECT COSTS
Travel $60 $0 SIZO SO $0 $0 $180
Lodging $50 $0 $800 $0 SO $0 5850
Per Deim $25 SO $500 $0 SO SO $525
Reprod, $SO $25 $0 SO SO $0 $75
T elcphoneIF ax $20 $20 $50 $50 $0 SSO $l90
POSl3!le SO $20 $0 $0 $0 $50 $70
Comput.er(CI\D) $0 $48 $0 $0 $144 $0 $192
S205 $113 $1,470 $50 $144 $100
S\lbtotal: $2,0&2
SUBCONSULTANT FEES
S&ME, [ne, (Pavement Tcsting Finn) S60.700
LPA Admin. Fec (10%) 56,070
Subtotal: $66,170
ITOTAL FEE m,9..1
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