Technician Information for David Scherer

First NameDavid
Last NameScherer
Technician ID02157

Associated Labs

Total 3 items.
Lab NameManager NameFull AddressDistrictPage Alias
Twining Laboratories of Southern CaliforniaCorey Rhodes3310 Airport Way, Long Beach, CA 908067Lab 1
Twining Laboratories of Southern CaliforniaSammy Daghighi111 North Main Street, Unit A, Riverside, CA 925018Lab 2
Twining LaboratoriesRyan Powney15950 Bernardo Center Drive, Suite J, San Diego, CA 9212711Lab 3

Test Methods

California Test (CT) Certifications

Total 30 items.
Test MethodExpiration DateStatusIA ResponsibleWithin Lab(s) ScopeComments
CT 105 Calculations - Gradings (JTCP - HMA I / S&A)2023-03-06ExpiredAvinash RallaLab 1, Lab 2, Lab 3(No comments)
CT 125 AGG Sampling - AGGREGATES (JTCP - HMA I / S&A)2023-03-06ExpiredSarbjit GrewalLab 1, Lab 2, Lab 3(No comments)
CT 201 Sample Preparation - Soil and Aggregates (JTCP - S&A)2023-03-06ExpiredAvinash RallaLab 1, Lab 2, Lab 3(No comments)
CT 202 Sieve analysis - Fine and Coarse Aggregates (JTCP - S&A)2023-03-06ExpiredSarbjit GrewalLab 1, Lab 2, Lab 3(No comments)
CT 205 Percent Crushed Particles (JTCP - S&A)2023-03-06ExpiredSarbjit GrewalLab 1, Lab 2, Lab 3(No comments)
CT 216 Relative Compaction - Soils and Aggregates (JTCP - S&A)2023-03-06ExpiredSarbjit GrewalLab 1, Lab 2, Lab 3(No comments)
CT 217 Sand Equivalent (JTCP - S&A)2023-03-06ExpiredSarbjit GrewalLab 1, Lab 2, Lab 3(No comments)
CT 226 Moisture Content - Soils and Aggregates (JTCP - S&A)2023-03-06ExpiredSarbjit GrewalLab 1, Lab 2, Lab 3(No comments)
CT 227 Cleanness Value (JTCP - S&A)2023-03-06ExpiredSarbjit GrewalLab 1, Lab 2, Lab 3(No comments)
CT 229 Durability (JTCP - S&A)2023-03-06ExpiredSarbjit GrewalLab 1, Lab 2, Lab 3(No comments)
CT 521.2 Compressive Strength - PCC (ASTM C39 / C1231) 2023-06-10ExpiredEmily MerrittLab 1, Lab 3
Created based on CT521 certificate ID61613
CT 521.1 Compressive Strength - PCC (ASTM C39 / C617) 2023-06-10ExpiredEmily MerrittLab 1, Lab 3 Created based on CT521 certificate ID61613
CT 523.1 Section B.1 & B.2 Flexural Strength (Field Fabrication) (JTCP - PCC)2023-06-10ExpiredBrandt HouchenLab 1, Lab 2, Lab 3(No comments)
CT 523.2 Section B.3 Flexural Strength (Lab Test) 2023-06-10ExpiredBrandt HouchenLab 1, Lab 2(No comments)
CT 524 Flexural Strength of Rapid Strength - PCC 2023-06-10ExpiredBrandt HouchenLab 1, Lab 2, Lab 3(No comments)
CT 533 Ball Penetration - PCC 2023-06-10ExpiredBrandt HouchenLab 1, Lab 2, Lab 3(No comments)
CT 231 Relative Compaction - Nuclear Gage 2023-11-09ExpiredAshley ShawLab 1, Lab 2, Lab 3(No comments)
CT 504 Air Content of PCC - Pressure Method (JTCP - PCC)2024-07-13ActiveJackie TreatLab 1, Lab 2, Lab 3(No comments)
CT 518 Unit Weight - PCC (JTCP - PCC)2024-07-13ActiveJackie TreatLab 1, Lab 2, Lab 3(No comments)
CT 539 Sampling Fresh Concrete (JTCP - PCC)2024-07-13ActiveJackie TreatLab 1, Lab 2, Lab 3(No comments)
CT 540 Making Cylinders - PCC (JTCP - PCC)2024-07-13ActiveJackie TreatLab 1, Lab 2, Lab 3(No comments)
CT 543 Air Content of PCC - Volumetric Method (JTCP - PCC)2024-07-13ActiveJackie TreatLab 3(No comments)
CT 556 Slump - PCC (JTCP - PCC)2024-07-13ActiveJackie TreatLab 1, Lab 2, Lab 3(No comments)
CT 557 Temperature - PCC (JTCP - PCC)2024-07-13ActiveJackie TreatLab 1, Lab 2, Lab 3(No comments)
CT 125 ADMIX Sampling - ADMIXTURE 2026-01-23ActiveAshley ShawLab 1, Lab 2, Lab 3Date adjusted to make a three year Cert IA 68
CT 125 AGG Sampling - AGGREGATES 2026-01-23ActiveAshley ShawLab 1Date adjusted to make a three year Cert IA 68
CT 125 BIT Sampling - BITUMINOUS 2026-01-23ActiveAshley ShawLab 1, Lab 2, Lab 3Date adjusted to make a three year Cert IA 68
CT 125 CEM Sampling - CEM 2026-01-23ActiveAshley ShawLab 1, Lab 2, Lab 3Date adjusted to make a three year Cert IA 68
CT 125 GEN Sampling - GENERAL 2026-01-23ActiveAshley ShawLab 1, Lab 2, Lab 3Date adjusted to make a three year Cert IA 68
CT 125 HMA Sampling - HMA 2026-01-23ActiveAshley ShawLab 1Date adjusted to make a three year Cert IA 68

AASHTO/ASTM Proficiencies