HomeMy WebLinkAbout2025-09-08 - Lindbergh High School Field Improvements - 25B121-01 - 4864_Compressive Strength of Concrete_000001Specimen
Number
Test
Age Days
Test
Date
Field / Lab
Cure Days
Average Cylinder
Diameter (in)
Cylinder
Area (in²)
Max Load
(lbs)
Strength
(psi)
Fracture
Type
Break
Remark
Capping
Method
1-1 7 09/15/25 1 / 6 4.00 12.57 46,337 3,690 2 U
1-2 28 10/06/25 1 / 27
1-3 28 10/06/25 1 / 27
1-4 28 10/06/25 1 / 27
1-5 56 H 11/03/25 1 / 55
Test Age Average Strengths (psi): 7 Day - 3690
Tested By: Paul Fuentes (1)
Checked In : 09/09/2025 (1,2,3,4,5)
Capping Methods
U: Unbonded Caps (ASTM C1231)
Set #:1
Specimen Size:4" X 8"
Specimens In Set:5
Truck / Ticket #:1185 / 1247282
Contractor:Needy Construction
Technician:Ross Jorgensen
Cast By:Ross Jorgensen
Date Cast:09/08/25
Sampled From:Chute
Placement Method:Chute
Sample Details
Batched:09:17 PDT
Sampled:10:08 PDT
Cast:10:14 PDT
Truck Empty:10:30 PDT
Placement Time:73 (min)
Placement Location:Not Specified
Location Details:Upper Softball Field- Western dugout mono-poured retaining wall and thickened edge slab, South dugout curbwall;
Lower Baseball Field-East dugout retaining and curb walls, South dugout curbwalls
Sample Location / Notes:Sampled load 1 of 3. Placed at the softball field-1st lift in west retaining wall and south dugout curb wall
Batch Log
Strength:4500 (psi)
Specifications
Supplier:Miles
Plant:202
Sample Condition:
Mix Design:1250AF
On-Site Admixtures: None
Location
Field Measurements
Plastic Unit Weight:
Air Content:4.4 (ASTM C231)
Load Volume:10.00 (yd³)
Weather:Cloudy Slump (in):4-3/4 (ASTM C143)
Air Temperature (F):64 Concrete Temp (F):74 (ASTM C1064)
Lab Test Results
Testing Lab: Burlington, 777 Chrysler Drive, Burlington, WA, 98233
General Remarks
Placed by truck chute
As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and
authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written
approval.
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Client:
Renton School District No. 403
Renton, WA 98057
300 SW 7th St
Project:
Lindbergh High School Field Improvements
25B121-01 (Bldg Permit: B25002218)
Renton, WA 98059
16426 128th Avenue Southeast
Compressive Strength of Concrete
Test Method: ASTM C 39
Sample: 4864
Sample 4864
Report #: CC-000001-00
Burlington
777 Chrysler Drive
Burlington, WA 98233
Phone: (360) 755-1990
Report Date: 09/15/2025 12:52