N.Y.C. Admin. Code § BC 1901: Section BC 1901: General

1901.1 Scope.

The provisions of this chapter shall govern the materials, quality control, design and construction of concrete used in structures.

1901.1.1 Referenced standards.

Where this code makes reference to the nationally recognized standard ACI 318, such standard shall be as modified for New York City in accordance with Section 1908 of this code. Where sections within ACI 318 are referenced in other chapters and appendices of ACI 318, the provisions of this chapter shall apply.

1901.2 Plain and reinforced concrete.

Structural concrete shall be designed and constructed in accordance with the requirements of this chapter and ACI 318 as amended in Section 1908 of this code. Except for the provisions of Sections 1904 and 1910, the design and construction of slabs on grade shall not be governed by this chapter unless they transmit vertical loads or lateral forces from other parts of the structure to the soil. Precast concrete diaphragms in buildings assigned to Seismic Design Category C or D shall be designed in accordance with the requirements of ASCE 7, Section 14.2.4.

1901.3 Anchoring to concrete.

Anchoring to concrete shall be in accordance with ACI 318 as amended in Section 1908, and applies to cast-in (headed bolts, headed studs and hooked J- or L-bolts), post-installed expansion (torque-controlled and displacement-controlled), undercut and adhesive anchors.

1901.4 Composite structural steel and concrete structures.

Systems of structural steel acting compositely with reinforced concrete shall be designed in accordance with Section 2206.

1901.5 Construction documents.

The construction documents for structural concrete construction shall include:

1. The specified compressive strength of concrete at the stated ages or stages of construction for which each concrete element is designed.

2. The specified strength or grade of reinforcement.

3. The size and location of structural elements, reinforcement and anchors.

4. Provision for dimensional changes resulting from creep, shrinkage and temperature.

5. The magnitude and location of prestressing forces.

6. Anchorage length of reinforcement and location and length of lap splices.

7. Type and location of mechanical and welded splices of reinforcement.

8. Details and location of contraction or isolation joints specified for plain concrete.

9. Minimum concrete compressive strength at time of posttensioning.

10. Stressing sequence for posttensioning tendons.

11. For structures assigned to Seismic Design Category D, a statement if slab on grade is designed as a structural diaphragm.

12. Exposure classes per ACI 318, Section 19.3.1, and Section 1904.2 of this code.

13. Areas of mass-concrete where a thermal control plan is required.

1901.6 Special inspections and tests.

Special inspections and tests of concrete elements of buildings and structures, and concreting operations, shall be as required by Chapter 17.