Technical Booklet E Fire Safety·Page 100·Table 4.2 Note
Notes to Table 4.2 - Basement Floor Provisions
The floor over a basement must meet the provisions for ground and upper storeys if that period is higher.
The floor over a basement (or if there is more than one basement, the floor over the topmost basement) should meet the provisions for the ground and upper storeys if that period is higher.
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