1985 Ed.]
Building (Construction) Regulations
[CAP. 123
B 105
(2) For the purpose of Tables XXXIX and XL, ucu is the works resistance to crushing of the concrete when tested in accordance with the First Schedule within 28 days after mixing.
[Subsidiary]
First Schedule.
TABLE XXXIX
Maximum permissible compressive stresses for special mixes and designed mixes in MPa
Maximum permissible compressive stress
L.N. 294/76.
1 2 3 4 Special mixes direct due to bending but not more than 8.5 ❝ but not more than II Designed mixes W but not more than 11 Ww but not more than 15 3.65 2.73TABLE XL
Maximum permissible shear and bond stresses for special and designed mixes in MPa
1 2 3 4 Maximum permissible bond stress Resistance to crushing ucu * Maximum permissible average local More than 20 + 0.27 but not more than 0.9 + 0.40 but not more than 1.0 2ucu + 0.67 but not more than 1.5 20 0.7 0.8 1.2 Less than 20 30 25 50 Ucu # 3 u It'Page 105
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