(1) Reinforced concrete lintels may:-

a) be constructed in accordance with the requirement set out in the Fourth schedule: or

b) be proprietary pre-cast lintels of approved manufacture.

(2) Lintels of types other than that specified in subsection (1) may be used to the design and construction being approved by the local authority.3

2 Where required by the provisions of Chapter 11, lintels should have the fire-resistance rating there specified for structural members.

3Reinforced brick lintels, if designed and constructed to accord with the provisions of NBR1 Information sheet X/BOU 2-29, dated June, 1975, issued by the National Building Research Institute of South Africa, shall be deemed to satisfy the requirements of the local authority.