HomeMy WebLinkAbout2025-09-23 - Lindbergh High School Field Improvements - 25B121-01 - 5034_Compressive Strength of Concrete_000004Specimen
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
4-1 7 09/30/25 1 / 6 4.00 12.57 63,775 5,070 2 CP U
4-2 28 10/21/25 1 / 27
4-3 28 10/21/25 1 / 27
4-4 28 10/21/25 1 / 27
4-5 56 H 11/18/25 1 / 55
Test Age Average Strengths (psi): 7 Day - 5070
CP: Compressive Strength meets project requirements at design strength age.
Tested By: Paul Fuentes (1)
Checked In : 09/24/2025 (1,2,3,4,5)
Capping Methods
U: Unbonded Caps (ASTM C1231)
Set #:4
Specimen Size:4" X 8"
Specimens In Set:5
Truck / Ticket #:1721 / 3490603
Contractor:Neeley Construction
Technician:Kenny Mendez
Cast By:Kenny Mendez
Date Cast:09/23/25
Sampled From:Chute
Placement Method:Chute
Sample Details
Batched:12:05 PDT
Sampled:13:15 PDT
Cast:13:20 PDT
Truck Empty:
Placement Time:
Placement Location:Building Exterior - Light Post Pedestal
Location Details:SE-NW Perimeter of Baseball Field
Sample Location / Notes:SE Pole
Batch Log
Strength:5000 (psi)
Air:3.5% - 6.5% (%)
Slump:N/A - 7.5" (in)
Spread:N/A - N/A (in)
Specifications
Supplier:CalPortland
Plant:282
Mix Design:0934
On-Site Admixtures: 10.00 Gal Water, gals. (10 yd³)
Location
Field Measurements
Plastic Unit Weight:
Air Content:4.0 (ASTM C231)
Load Volume:10.00 (yd³)
Weather:Sunny Slump (in):6" (ASTM C143)
Air Temperature (F):73 Concrete Temp (F):70 (ASTM C1064)
Lab Test Results
Testing Lab: Burlington, 777 Chrysler Drive, Burlington, WA, 98233
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: 5034
Sample 5034
Report #: CC-000004-00
Burlington
777 Chrysler Drive
Burlington, WA 98233
Phone: (360) 755-1990
Report Date: 10/01/2025 10:12