11-Appendix E - Testing Schedule.pdf
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- Solicitation number
- RPS-26-00366
- Issued by
- Hillsborough County, Florida
About this file
This document is Appendix E: Testing Schedule from the Transportation Technical Manual for Subdivision and Site Development Projects issued by Hillsborough County, Florida in October 2023. The testing schedule establishes comprehensive material testing requirements and frequencies for various components of transportation infrastructure projects, including embankment, utility trench backfill, stabilized subgrade, base materials, concrete, and asphalt surfaces. Testing specifications are provided for soil compaction (with density requirements ranging from 95% to 100% of maximum dry density depending on location and material type), limerock bearing ratio tests, concrete cylinder testing at 7, 28, and 56 days, and asphalt mix design and core sampling. The document specifies testing frequencies, such as density tests at intervals of one per 500 feet horizontally and one per one-foot vertical lift, and establishes minimum performance standards including minimum limerock bearing ratios of 40 for stabilized subgrade, 100 for standard base materials, and 150 for crushed concrete base.
The testing schedule requires submission of final test report packages in both bound and electronic PDF formats, organized into eight sections covering excavation and embankment, sanitary sewer installation, potable and reclaimed water systems, stormwater systems, subgrade placement, road base materials, roadway surfaces, and concrete structures. All final reports must include a signed and sealed certificate from a geotechnical engineer verifying compliance with Hillsborough County technical manual requirements or documenting any deficiencies. Testing locations must be identified on construction plans with assigned test numbers, and plans may be submitted as PDFs of construction drawings with test information added or as color-scanned copies. The county reserves the right to independently sample and test any materials during construction, and all testing must comply with applicable AASHTO, FM, FDOT, and ASTM standards referenced throughout the schedule.
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Transportation Technical Manual for Subdivision and Site Development Projects (I'\ Hillsborough ~ County Florida
APPENDIX E: TESTING SCHEDULE
October 2023 APPENDIX E
(I'\ Hillsborough ~ County Florida
TESTING SCHEDULE
Item Test Test Frequency Embankment Optimum Moisture/Maximum Dry Density of soil
(proctor) as determined by AASHTO TI80.
Per Soil Type
Density Test within Right-of-Way (R.O.W.).
98% of Maximum Dry Density as determined by
AASHTO T180.
One per 500' horizontally, in one-foot lifts (1)
Density Test Outside of R.O.W.
95% of Maximum Dry Density as determined by
AASHTO T180.
One per 500’ horizontally, in one-foot lifts (1)
Gradation (Sieve Analysis) AASHTO TO27. Per Soil Type Utility Trench Backfill – over pipelines and around structures from R.O.W. line to R.O.W. line
Optimum Moisture/Maximum Dry Density of soil by AASHTO T180.
Per Soil Type
98% of Maximum Dry Density (proctor).
Soil mix by AASHTO T180.
(1)(2)
Utility Trench Backfill – over pipelines and around structures outside R.O.W. line
Optimum Moisture/Maximum Dry Density (proctor). Soil Mix by AASHTO T180.
Per Material Type
95% of Maximum Dry Density as determined by
AASHTO T180.
(1)(2)
Stabilized Subgrade Limerock Bearing Ratio (LBR) as per FM 5-515. Per Soil Type Minimum 40 LBR. Per Material Type (3) Minimum 20 LBR (For Soil Cement Only). Per Material Type Subgrade to be used under soil cement must have a minimum 20 LBR.
Per Material Type
Moisture/Maximum Dry Density of soil (proctor).
Proctor as per FM 5-515.
Per Material Type
98% of Maximum Dry Density as determined by FM 5-515. No tolerance.
Soil Cement - 97% of Maximum Dry Density as determined by AASHTO-T134. No tolerance
(3)(4)
Base (Other than soil cement or crushed concrete)
Limerock Bearing Ratio (FM 5-515).
Minimum LBR 100.
Per Material Type/Per Source
98% of Maximum Dry Density as determined by FM 5-515. No tolerance.
(3)(4)
October 2023 APPENDIX E-1
(I'\ Hillsborough ~ County Florida
TESTING SCHEDULE (Continued) Item Test Test Frequency Soil Cement Base Mix Design Per Material Type
Moisture/Maximum Dry Density of soil (proctor)
AASHTO T134
Per Material Type
97% of Maximum Dry Density as determined by AASHTO T134. No tolerance.
(3)(4)
Compressive Strength of Specimens One set of three per material type daily
Cores Thickness Test (3) Crushed Concrete Base
Gradation Per Type of Material/Source (5)
Abrasion per FM 1-T096 Per Type of Material/Source
Limerock Bearing Ratio (LBR) as per FM 5-515.
Minimum LBR 150.
Per Type of Material/Source
100% of Maximum Dry Density as determined by FM 5-515. No tolerance.
(4)
Concrete Temperature (ASTM C1064) One per set of cylinders Slump (ASTM C143) One per set of cylinders Air Content (ASTM C231 or C173 as applicable) One per set of cylinders
Compressive Strength Cylinders (ASTM C31 and C39)
One set of four (6x12) inch or one set of five (4x8) inch cylinders for 100 cubic yards or fraction thereof, per class of concrete. Tested as follows:
1 at 7 days, 2 at 28 days, and 1 as reserve tested 56 days is necessary.
Three cylinders must be tested at 28 days if 4x8 inch cylinders are used.
October 2023 APPENDIX E-2
(I'\ Hillsborough ~ County Florida
TESTING SCHEDULE (Continued) Item Test Test Frequency Superpave Asphalt Mix Design One per FDOT
Approved type
Temperature (6) Maximum Specific Gravity (FM 1-T209) As per Section 330 of the Hillsborough County Public Works Standard Specifications for Construction.
Extraction/Gradation (FM5-563/FM 1-T030
Thickness.
No core is to be less than the specified thickness.
Three cores per production day.
Straightedge (FM 5-509) (7) Bulk Specific Gravity (MF 1-T166) 90% of Lab Density for Local Roadways (Remove and Replace if not met); and 92% of Lab Density for Arterials and Collectors (Remove and Replace if not met).
(3)
(1) Recommend testing methods: FM 1-T238, FM- T204, ASTM D6938, and ASTM D2937.
(2) Tests must be located no more than 500 feet apart. Tests must be performed on each lift, except that tests must not be further apart than one foot vertically. Field Densities must be taken over all road crossings.
Field Densities for Sanitary Lines must be staggered to include results over service laterals. There must be a minimum of one test series for each one foot of lift over pipeline between manholes. Tests around structures must be spiraled in one-foot lifts. For all type pipe, fill to be compacted beneath the haunches using suitable tampers. For pipe less than 24 inches in diameter, backfill in appropriate lifts and test from the top of the pipe and every one foot vertically thereafter. For pipe 24 inches to 72 inches in diameter, backfill in appropriate lifts and test from the springline and every one-foot vertically thereafter. For pipe larger than 72 inches, tests must begin one foot above the base of the trench.
(3) Tests must be located no more than 500 feet apart. There must be no less than one test per street. No core must be less than specified minimum thickness.
(4) Testing for the subgrade and base compaction must be located no more 500 feet apart and must be staggered to the left, right, and on the centerline of the roadway. Hillsborough County may reserve the right to sample and test any material utilized in the construction of the roadway. Testing must be in accordance with the Testing Schedule of this manual and applicable FDOT Standard Specifications for Road and Bridge Construction. Inspection of the subgrade and base must be conducted by the Engineer of Record, the County Inspector, and must be approved by the Project Manager prior to the base and asphalt construction respectively.
Note: Hillsborough County reserves the right to sample and test any material during construction.
(5) Materials requirements as per latest of Section 204 of the Hillsborough County Public Works Standard
Specifications for Construction.
(6) Continuous for the five first loads if the temperature is within the master range take a temperature measurement every five (5) loads thereafter.
(7) For local roads, within residential subdivision projects, the straightedge test will be required only if requested by Hillsborough County. For other type of road and projects the straightedge test is require as per Section 330 of the Hillsborough County Public Works Standard Specifications for Construction.
October 2023 APPENDIX E-3
(I'\ Hillsborough ~ County Florida
HILLSBOROUGH COUNTY SOIL & MATERIAL
FINAL TEST REPORT PACKAGES
One bound (in book format) and one electronic (pdf) final project test report package must be submitted in the following format, with required documentation as appropriate. Plans showing the test locations, along with the test numbers, must be identified with each section. The plans can be a pdf of the construction plans where the test report information is added or it can be a color scanned pdf copy.
• COVER – Include project name, Hillsborough County project ID, location and contact information.
• SIGNED AND SEALED CERTIFICATE – Must be signed and sealed by Geotechnical Engineer and include a verification statement that testing requirements of the Hillsborough County technical manuals have been achieved or exceeded. If testing requirements were not, a description of deficiencies must be noted.
• SECTION 1 – Excavation and embankment requirements, materials testing, proctors of materials, earth work test results, and offsite fill material testing.
• SECTION 2 – All tests for the installation of the sanitary sewer system.
• SECTION 3 – All tests for the potable and reclaimed water systems.
• SECTION 4 – All tests for the installation of the storm water system.
• SECTION 5 – Tests for the sub grade material followed by the buildup placement in the roadways tests.
• SECTION 6 – Reports for the materials to be used in the road base, followed by the reports for the buildup of the road base. Mix designs must also be included.
• SECTION 7 – Roadway surface material tests, followed by the tests done during the buildup of the roadway surfaces, including asphalt mix design, extraction/gradation, bulk specific gravity (core density), and thickness reports.
• SECTION 8 – All concrete tests for curbs, storm structures, walls, etc.
Refer to Testing Schedule for required frequency of tests.
The rolling straight edge report must be submitted separately with as-builts.
October 2023 APPENDIX E-4
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