Job Title: Concrete QC Field Technician
Job Type: Full Time
Work Schedule: Monday-Saturday
Supervisor: Concrete QC Transportation Inspector
Travel: Required/Transient

Job Overview:
Perform daily inspections prior to and after concrete placement and notify supervisor if any deficiencies exist.
Gather data, such as core thickness, straight edge deficiencies, and profilograph smoothness, from previously
placed concrete paving lanes within timeframe required to generate reports for concrete acceptance.
Responsibilities and Duties:
1. Coordinate with onsite operations staff to review and document pre-paving inspections in Procore. Record
all deficiencies and ensure they are reported to supervisor for correction prior to concrete placement.
2. Collect hardened concrete paving lot data as detailed in applicable specification and transmit to supervisor
to ensure report can be submitted within allotted timeframe.
3. Collect any additional QC data from the field that is deemed necessary by operations or supervisory staff.
4. Monitor daily operations to ensure work is being performed within requirements detailed in the contract
specifications.
5. Produce daily report with detailed events that occurred including any specific direction given to the operations
staff for items that were categorized as deficient.
6. Capture photographs of work that is satisfactory and/or deficient that properly utilize the tools provided by
management software.
7. Clean and maintain QC equipment.
8. Wear personal protective equipment while onsite in accordance with applicable safety regulations.
9. Arrive on time ready to perform tasks that fall within your roles and responsibilities.
Qualifications:
Possess High-School Diploma or equivalent
Must possess valid Driver s License
Must be able to obtain Military and Airport badge/pass
Provide valid documentation for the I-9 Immigration Document
ACI Concrete Field Testing Technician – Grade I (See attached for ACI JTA)
Concrete Strength Testing Technician (See attached for ACI JTA)
Or ability to obtain above certifications and any other certification requested related to Concrete Paving
Field within timeframe specified during the interview process.
Physical attributes:
o Be able to lift at least 50 pounds above your head.

I.Concrete Field Testing Technician - Grade I
Certification Requirements:
ACI will grant certification only to those applicants who meet both of the following requirements:
1. A passing grade on the ACI written examination; AND
2. Successful completion of the ACI performance examination.
The one-hour written examination is closed-book and consists of 55 multiple-choice questions. There are between five
and ten questions on each of the ASTM test methods and practices. To pass the written examination, BOTH of the
following conditions must be met:
1. At least 60% correct for each of the required test methods and practices; AND
2. A minimum score of 70% overall.
The performance examination is also "closed book" and requires actual demonstration of six of the required test methods
and practices plus a verbal description of Practice C172/C172M (sampling). The examinee is judged on his/her ability to
correctly perform (or describe, where allowed) all of the required steps for each procedure.
Certification is valid for a period of five years from the date of successfully completing all requirements.
Recertification requires successful completion of both the written and performance examinations.
o Be able to walk long distances and stand on feet for long periods of time.
o Be able to read, hear and understand contract documents and specifications.

Job-Task Analysis (JTA) for ACI Certification of
Concrete Field Testing Technician—Grade I
Page 1 of 4 Approved 10/7/2019
HOW TO USE THIS JTA:
For each of the following assessment methods, the Candidate must:
On the written examination:
Understand the following general concepts, which may not have specified values, procedures, or
measurements; and
Know the following specific procedures or values; performance of these items may also be assessed
on the performance examination.
On the performance examination:
Perform—or describe verbally, where allowed—the following tasks or steps, which are part of the
specified procedure; knowledge of these items may also be assessed on the written examination.
RESOURCES IN THIS PROGRAM:
ASTM C1064/C1064M, Standard Test Method for Temperature of Freshly Mixed Hydraulic-Cement
Concrete
ASTM C172/C172M, Standard Practice for Sampling Freshly Mixed Concrete
ASTM C143/C143M, Standard Test Method for Slump of Hydraulic-Cement Concrete
ASTM C138/C138M, Standard Test Method for Density (Unit Weight), Yield, and Air Content
(Gravimetric) of Concrete
ASTM C231/C231M, Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure
Method
ASTM C173/C173M, Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric
Method
ASTM C31/C31M, Standard Practice for Making and Curing Concrete Test Specimens in the Field
ASTM C1064/C1064M, Standard Test Method for Temperature of Freshly Mixed Hydraulic-
Cement Concrete
Understand the Scope and the Significance and Use of the test method, including time
requirements based on oversize aggregates
Know the equipment requirements
Know the verification requirements of the equipment used in this test method
Know the requirements for measuring temperature of concrete in either the transporting
equipment or the forms
Know the sampling requirements when not measured in transporting equipment or forms
Perform temperature measurement as specified
Perform reporting of temperature to the required accuracy

Job-Task Analysis (JTA) for ACI Certification of
Concrete Field Testing Technician—Grade I (Continued)
Page 2 of 4 Approved 10/7/2019
ASTM C172/C172M, Standard Practice for Sampling Freshly Mixed Concrete
Understand the Scope and the Significance and Use of the practice
Know and perform (or describe verbally) the time limit for obtaining sample portions
Know and perform (or describe verbally) the transportation and remixing requirements within
maximum time limits
Know and perform (or describe verbally) the time limits for starting tests for slump, temperature,
air content, and molding specimens for strength tests
Know and perform (or describe verbally) protection of sample
Know and perform (or describe verbally) the requirements for sample sizes to be used for strength
tests, air content, temperature, and slump
Know and perform (or describe verbally) sampling procedures from stationary mixers, paving
mixers, revolving drum truck mixers or agitators, and continuous mixers
Know and perform (or describe verbally) the procedure for removal of large maximum size
aggregate
ASTM C143/C143M, Standard Test Method for Slump of Hydraulic-Cement Concrete
Understand the Scope and the Significance and Use of the test method, including the plastic
concrete properties appropriate for testing
Know the equipment requirements
Know the requirements for obtaining a sample
Know the maximum aggregate size permitted
Understand the time limits associated with the test
Perform the test procedure, including filling of the mold, consolidation, lifting, and measuring as
specified
Perform reporting of slump to the required accuracy
ASTM C138/C138M, Standard Test Method for Density (Unit Weight), Yield, and Air Content
(Gravimetric) of Concrete
Understand the Scope of the test method
Know the equipment requirements
Understand calibrated volume of the density (unit weight) measure
Know the requirements for obtaining a sample
Know the capacity of measure requirements for different aggregates
Know the requirements for consolidation
Perform the test procedure, including filling, rodding/vibration, strike-off, cleaning, and mass
determination of both empty and filled measure
Know and perform the calculation and reporting of density (unit weight) to the required accuracy
Know how to calculate and report theoretical density to the required accuracy
Know how to calculate and report yield to the required accuracy
Know how to calculate and report relative yield to the required accuracy
Know how to calculate and report air content to the required accuracy

Job-Task Analysis (JTA) for ACI Certification of
Concrete Field Testing Technician—Grade I (Continued)
Page 3 of 4 Approved 10/7/2019
ASTM C231/C231M, Standard Test Method for Air Content of Freshly Mixed Concrete by the
Pressure Method
Understand the Scope and the Significance and Use of the test method, including the applicable
types of concrete appropriate for testing
Know the equipment requirements
Know the calibration requirements for the equipment used in this test method
Know the requirements for obtaining a sample
Know the maximum aggregate size permitted
Know and perform proper procedures for sample placement and consolidation, including strike-off
Perform test procedure (using Type A or Type B meter), including proper sequence and use of
water, petcocks, valves, pump, and pressure gauge
Perform reading of the pressure gauge after release of pressure into sample
Perform proper release of pressure and disassembly of air meter
Know and perform proper use of aggregate correction factor
Know and perform calculation of air content of sample tested
Perform reporting of air content to the required accuracy
ASTM C173/C173M, Standard Test Method for Air Content of Freshly Mixed Concrete by the
Volumetric Method
Understand the Scope and the Significance and Use of the test method, including the applicable
concrete types appropriate for testing
Know the equipment requirements
Know the calibration requirements for the equipment used in this test method
Know the requirements for obtaining a sample
Know the maximum aggregate size permitted
Know and perform proper procedures for placement and consolidation of sample, including strikeoff
Know and perform initial addition of water and alcohol to the air meter
Know and perform the process of inverting, shaking, and rolling the air meter to displace the
volume of air in the concrete specimen
Know and perform the steps required if the reading is outside of the range of the meter
Perform initial meter reading as specified, within allowable time & percentage limits
Perform final meter reading as specified, within allowable time & percentage limits
Perform the disassembly of air meter
Know and perform examination of measuring bowl to verify a valid or invalid test
Know and perform calculation of air content of sample tested
Perform reporting of air content to the required accuracy

Job-Task Analysis (JTA) for ACI Certification of
Concrete Field Testing Technician—Grade I (Continued)
Page 4 of 4 Approved 10/7/2019
ASTM C31/C31M, Standard Practice for Making and Curing Concrete Test Specimens in the
Field
Understand the Scope and the Significance and Use of the practice, including reasons for curing by
standard or field methods
Know the equipment requirements
Know the requirements for obtaining a sample
Know the maximum aggregate size allowed
Know the fresh property tests to be performed when strength specimens are molded
Know the requirements for consolidation
Know and perform the procedure for molding cylindrical specimens, including casting,
consolidation, finishing, identification, and protection to prevent moisture loss
Know the procedure for molding of beam specimens, including casting, consolidation, finishing,
identification, and protection to prevent moisture loss
Know the requirements for standard curing including storage, initial curing, and final curing
Know the requirements for field curing
Know and perform (or describe verbally) the requirements for transportation of specimens to the
laboratory
Know the reporting requirements

II.Concrete Strength Testing Technician
Certification Requirements:
ACI will grant certification only to those applicants who meet both of the following requirements:
1. A passing grade on the ACI written examination, and
2. Successful completion of the ACI performance examination.
The one-hour written examination is closed-book and consists of approximately 40 multiple-choice questions. There are
at least eight questions on each of the practices and test methods. To pass the written examination, both of the following
conditions must be met:
1. At least 60% correct for each of the required practices and test methods, and
2. A minimum score of 70% overall.
The performance examination is also closed-book and requires actual demonstration of the required practices and test
methods. The examinee is judged on his/her ability to correctly perform all of the required steps for each procedure.
Certification is valid for a period of five years from the date of successfully completing all requirements.
Recertification requires successful completion of both the written and performance examinations.

Job-Task Analysis (JTA) for ACI Concrete Strength Testing Technician Certification
Page 1 of 3 Approved 2/29/2020; Editorial Update 2/8/2022
HOW TO USE THIS JTA:
For each of the following assessment methods, the Candidate must:
On the written examination:
Understand the following general concepts, which may not have specified values, procedures, or
measurements; and
Know the following specific procedures or values; performance of these items may also be assessed
on the performance examination.
On the performance examination:
Perform—or describe verbally, where allowed—the following tasks or steps, which are part of the
specified procedure; knowledge of these items may also be assessed on the written examination.
RESOURCES:
ASTM C617/617M – Standard Practice for Capping Cylindrical Concrete Specimens
ASTM C1231/1231M – Standard Practice for Use of Unbonded Caps in Determination of Compressive
Strength of Hardened Concrete Cylinders
ASTM C39/39M – Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
ASTM C78/78M – Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with
Third-Point Loading)
ASTM C617/617M – Standard Practice for Capping Cylindrical Concrete Specimens
Understand scope of practice
Understand significance and use of practice
Know dimensional requirements of capping plates
Know criteria for sulfur melting pots
Understand strength and thickness requirements of capping materials
Understand requirements for qualification of high-strength gypsum plaster
Understand requirements for qualification of sulfur mortar caps
Know the procedures for capping freshly molded cylinders
Know and perform the check of the end condition requirements for capping hardened concrete
specimens
Know and perform the procedures for capping hardened concrete specimens
Know how to protect and store specimens after capping
Understand safety issues related to melting pots
Know and perform the procedure to check for planeness and hollow areas of caps, including the
proper reporting of results
Know and perform the procedure for thickness measurements of caps, including the proper
reporting of results
ASTM C1231/1231M – Standard Practice for Use of Unbonded Caps in Determination of
Compressive Strength of Hardened Concrete Cylinders
Understand scope of practice
Know compressive strength limits for the use of unbonded caps
Understand significance and use of unbonded caps
Know dimensional, material, and hardness requirements of elastomeric pads

Job-Task Analysis (JTA) for ACI Concrete Strength Testing Technician Certification
(Continued)
Page 2 of 3 Approved 2/29/2020; Editorial Update 2/8/2022
Know dimensional, material, and planeness requirements of pad retainers
Know requirements governing the use of elastomeric pads
Know and perform the check of the end condition requirements for specimens tested with
unbonded caps
Know requirements for the use of unbonded caps in combination with other capping methods
Know the dimensional requirements and pad use limits
Know that the procedures for loading, testing, and reporting of results are to be completed
according to Test Method C39/C39M
Understand qualification of other elastomeric materials
Understand qualification of pad reuse
Understand methodology used to qualify the use of unbonded caps for various strength levels and
to qualify the permitted number of pad reuses
Understand the use of calculations used in qualification testing for computing the difference in
strength for each pair of cylinders and computing the average strength of cylinders tested using
unbonded caps and the reference capping system
Know the minimum percentage of reference capping system strength that must be met to qualify
unbonded caps for use
ASTM C39/39M – Standard Test Method for Compressive Strength of Cylindrical Concrete
Specimens
Understand scope of test method
Understand summary of test method
Understand significance and use of test method
Understand calibration requirements of testing machine
Understand design requirements of testing machine
Understand accuracy requirements of testing machine
Understand general requirements for bearing blocks
Understand requirements for bottom bearing blocks
Understand requirements for upper spherically-seated blocks
Understand requirements for load-indicating dials
Understand requirements for digital load indicators
Know requirements for allowable variance in cylinder diameter
Know requirements for and perform check of perpendicularity and planeness of cylinder ends
Know the requirements for determining daily average diameter
Understand the requirements for determining density of test specimens
Know the requirements for conducting length measurements
Know the requirements for maintaining specimens in a moist condition until time of test
Understand the permissible time tolerances for testing
Know and perform the procedure for positioning and centering specimens in the machine
Know and perform the procedures for zeroing the machine and aligning upper bearing block
Know and perform the procedure for verification of alignment when using unbonded caps
Know and perform the procedure for applying the test load at the proper rate
Know and perform the procedures for applying the load to failure and identifying break type
Know recording of the maximum load carried by the specimen and break type
Know the calculation of test results, including the proper reporting of compressive strength
Know how to correct strength values for a given length-to-diameter ratio
Know which information is to be included on reports

Job-Task Analysis (JTA) for ACI Concrete Strength Testing Technician Certification
(Continued)
Page 3 of 3 Approved 2/29/2020; Editorial Update 2/8/2022
ASTM C78/78M – Standard Test Method for Flexural Strength of Concrete (Using Simple
Beam with Third-Point Loading)
Understand scope of test method
Understand significance and use of test method
Understand general requirements for testing machines
Understand requirements for third-point loading apparatus
Know requirements for dimensions, shape, and surface conditions of test specimens
Understand technician qualification requirements
Know requirements for testing moist-cured specimens
Know and perform the procedure for positioning specimens on support blocks, including checking
and correcting for gap widths at contact points
Know how to calculate loading rate
Know and perform the procedure for applying the test load at the proper rate
Know and perform the procedure for measuring specimens for average width and depth after
specimen fracture
Know the calculation of modulus of rupture when fracture occurs in the middle third of the span
length
Know the calculation of modulus of rupture when fracture occurs outside the middle third of the
span length
Know the information to be included on reports
Know the reporting of modulus of rupture with proper precision

EDUCATION AND OTHER REQUIREMENTS:

• Must possess a valid Driver s License
• Must be able to obtain Military base access.
• Be able to provide valid documentation for the I-9 Immigration Document
• ACI Field Testing Technician Level I Certification
• ACI Aggregate Testing Technician Level I Certification
• ACI Flat Work Technician Level I Certification
• Or ability to obtain above certifications and any other certification requested related to Concrete Paving Field

PHYSICAL DEMANDS:

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.

• Ability to frequently lift and/or push/pull up to 50 pounds
• Ability to occasionally lift and/or push/pull up to 100 pounds
• Ability to work overhead
• Ability to use hands to grasp
• Ability to reach with arms
• Ability to move in and around confined and cluttered places and uneven areas
• Ability to repeatedly stoop, kneel, squat, crawl, and twist throughout the workday and week
• Ability to climb up and down a ladder and balance
• Ability to work shift in all weather and temperature extremes
• Adequate vision abilities to perform all tasks by using close, far and peripheral vision

WORK ENVIRONMENT:

• Employee will be required to wear personal protective equipment as needed to perform job tasks
• Employee is regularly exposed to noise, dust, and various types of smells
• Employee is frequently exposed to moving mechanical parts, fumes or airborne particles.
• Employee must be able to properly use and handle toxic or caustic chemicals.
• Employee is regularly exposed to wet, hot, and/or humid conditions, high precarious places, and outside weather conditions
• Employee is expected to work in a safe and efficient manner while maintaining a clean work area

R.C. Construction is an equal opportunity employer, including disability and protected veteran status. We recruit, employ, train, compensate, and promote without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other basis protected by applicable federal, state or local law.

This Job Description does not cover all the required duties, activities, skills, functions, responsibilities of the position, and working conditions any of which may change at any time according to the sole and absolute discretion of R.C. Construction Co., Inc., with or without notice.