3.2.3.7.

(1) Except as permitted by Articles 3.2.3.10. and 3.2.3.11, if a limiting distance shown in Table 3.2.3.1.A.v1 or Table 3.2.3.1.C.v1 for a Group A, B, C, D or Group F, Division 3 occupancy classification permits an exposing building face to have unprotected openings not more than 10% of the exposing building face, the exposing building face shall be,

(a) of noncombustible construction having a fire-resistance rating not less than 1 h, and

(b) clad with noncombustible cladding.

(2) Except as permitted by Sentence (7) and Articles 3.2.3.10. and 3.2.3.11., if a limiting distance shown in Table 3.2.3.1.A.v1 or Table 3.2.3.1.C.v1 for a Group A, B, C, D or Group F, Division 3 occupancy classification permits an exposing building face to have unprotected openings more than 10% but not more than 25% of the exposing building face, the exposing building face shall,

(a) have a fire-resistance rating not less than 1 h, and

(b) be clad with noncombustible cladding.

(3) Except as permitted by Articles 3.2.3.10. and 3.2.3.11., if a limiting distance shown in Table 3.2.3.1.A.v1 or Table 3.2.3.1.C.v1 for a Group A, B, C, D or Group F, Division 3 occupancy classification permits an exposing building face to have unprotected openings more than 25% but less than 100% of the exposing building face, the exposing building face shall have a fire-resistance rating not less than 45 min.

(4) Except as permitted by Article 3.2.3.10., if a limiting distance shown in Table 3.2.3.1.B.v1 or Table 3.2.3.1.D.v1 for a Group E, or Group F, Division 1 or 2 occupancy classification permits an exposing building face to have unprotected openings not more than 10% of the exposing building face, the exposing building face shall be,

(a) of noncombustible construction having a fire-resistance rating not less than 2 h, and

(b) clad with noncombustible cladding.

(5) Except as permitted by Sentence (7) and Article 3.2.3.10., if a limiting distance shown in Table 3.2.3.1.B.v1 or Table 3.2.3.1.D.v1 for a Group E, or Group F, Division 1 or 2 occupancy classification permits an exposing building face to have unprotected openings more than 10% but not more than 25% of the exposing building face, the exposing building face shall,

(a) have a fire-resistance rating not less than 2 h, and

(b) be clad with noncombustible cladding.

(6) Except as permitted by Article 3.2.3.10., if a limiting distance shown in Table 3.2.3.1.B.v1 or Table 3.2.3.1.D.v1 for a Group E, or Group F, Division 1 or 2 occupancy classification permits an exposing building face to have unprotected openings more than 25% but less than 100% of the exposing building face, the exposing building face shall have a fire-resistance rating not less than 1 h.

(7) The requirements of Clauses (2)(b) and (5)(b) are waived for a wall assembly that complies with the requirements of Article 3.1.5.5.v1

(8) The construction requirements for the exposing building face that are required by Sentences (1) to (6) shall be satisfied before applying the increased opening area permitted by Sentence 3.2.3.12.(1).