ACI 301-20 Specifcations for Concrete Construction

ACI 301-20 Specifcations for Concrete Construction. 1.7.2.2(e) Submit concrete supplier’s quality control program. 1.7.3 Quality assurance: Duties and responsibilities of Owner’s testing agency 1.7.3.1 Owner’s testing agencies that perform required tests of concrete materials will meet the requirements of ASTM C1077, which includes certifcation requirements for technicians. Owner’s testing agencies that test or inspect placement of reinforcement will meet the requirements of ASTM E329. 1.7.3.2 Unless otherwise specifed, Owner’s testing agency will provide services specifed in 1.7.3.2(a) through 1.7.3.2(c). 1.7.3.2(a) Owner’s testing agency will inspect, sample, and test fresh and hardened concrete for conformance to requirements in Contract Documents. If material furnished or Work performed by Contractor fails to conform to Contract Documents, testing agency will report defciency to Archi- tect/Engineer, Owner, Contractor, and concrete supplier. 1.7.3.2(b) Owner’s testing agency and its representatives are not authorized to revoke, alter, relax, enlarge, or release requirements in Contract Documents, or to accept or reject portions of Work. 1.7.3.2(c) Owner’s testing agency will report test and inspection results of Work to Owner, Architect/Engineer, Contractor, and concrete supplier within 7 days after tests and inspections are performed. Strength test reports will include location in Work where concrete represented by each strength test was deposited, date and time sample was obtained, and batch ticket number. Strength test reports will include information on storage and curing of specimens before testing. 1.7.3.5 Other testing services as needed—Contractor shall pay for the following testing services performed by Owner’s testing agency: (a) Additional testing and inspection required because of changes in materials or mixture proportions requested by Contractor. (b) Additional testing of materials or concrete because of failure to meet specifcation requirements. 1.7.4 Tests on hardened concrete in place 1.7.4.1 General—If necessary, Owner’s testing agency will perform tests on hardened concrete. Testing shall be at Contractor’s expense if this Specifcation requires tests to verify strength of concrete in structure and subsequent testing confrms concrete does not meet acceptance criteria. Contractor shall not be responsible for costs if tests are not required by this Specifcation or subsequent testing confrms concrete meets acceptance criteria. 1.7.4.2 Nondestructive tests for uniformity—Use of the rebound hammer in accordance with ASTM C805/C805M or the pulse-velocity method in accordance with ASTM C597 may be specifed by Architect/Engineer to evaluate unifor- mity of in-place concrete or to select areas to be cored. These methods shall not be used to evaluate in-place strength. ACI 301 pdf download.