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// CODE SNIPPET

§27-613 Concrete Utilizing Preplaced Aggregate

NYC 1968 Code (Vol I) > 10 Structural Work > 5 Concrete > §27-613 Concrete Utilizing Preplaced Aggregate
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The use of concrete formed by the injection of grout into a mass of preplaced coarse aggregate will be permitted where it can be demonstrated by successful prototype installation that the proposed mix, materials, and method of placement will produce a concrete of the specified strength and free of areas or inclusions of uncemented aggregate.

(a) Prototypes. At least two prototypes, from either previous work or samples prepared for the proposed project shall be prepared. The forms shall be stripped, and a minimum of six cores recovered and tested to demonstrate the strength of the concrete produced by the proposed materials and methods of installation. In addition, the homogeneity of the prototypes shall be demonstrated by demolishing the prototypes.

(b) In-place concrete. The concrete, as finally placed in the work, shall be prepared using the same materials, mix, equipment, and procedures utilized to prepare the successful prototype installations.

(c) Inspection. All preparation and placement of structural concrete utilizing preplaced aggregates shall be subject to controlled inspection. Compression test specimens shall be prepared and tested as required for premixed concrete, except that the specimens shall be prepared under conditions that will simulate the conditions under which the concrete in the work is installed.

§27-613.1 Precast and Prestressed Concrete

The provisions of reference standard RS 10-3 shall apply.

§27-613.2 Thin-Section Precast Concrete Construction

The provisions of reference standard RS 10-4 shall apply.

Related Code Sections


§27-613 Structural Work, Concrete Utilizing Preplaced Aggregate
The use of concrete formed by the injection of grout into a mass of preplaced coarse aggregate will be permitted where it can be demonstrated ...
NYC 1968 Code (Vol I) > 10 Structural Work > 5 Concrete > §27-613 Concrete Utilizing Preplaced Aggregate
1913.3 Concrete, Aggregate
Coarse aggregate, if used, shall not exceed 3 / 4 inch (19.1 mm) ...
NYC Building Code 2014 > 19 Concrete > 1913 Shotcrete > 1913.3 Aggregate
1914.3 Concrete, Aggregate
Coarse aggregate, if used, shall not exceed 3 / 4 inch (19.1 mm) ...
NYC Building Code 2008 > 19 Concrete > 1914 Shotcrete > 1914.3 Aggregate
1903.3 Concrete, Aggregates
Aggregates used in concrete shall comply with ACI 318, Section 3.3 ...
NYC Building Code 2008 > 19 Concrete > 1903 Specifications for Tests and Materials > 1903.3 Aggregates
1903.3 Concrete, Aggregates
Aggregates used in concrete shall comply with ACI 318, Section 3.3 ...
NYC Building Code 2014 > 19 Concrete > 1903 Specifications for Tests and Materials > 1903.3 Aggregates
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