14.1 Work in Extreme Weather Conditions
During hot or cold weather, the concreting should be done as per the procedure set out in good practices [6-5B(21)].
15 SAMPLING AND STRENGTH TEST OF DESIGN CONCRETE MIX
15.1 The provisions given in 14.1 to 14.4 of Part 6 'Structural Design, Section 5 Concrete, Subsection 5A Plain and Reinforced Concrete' of the Code shall apply.
Samples from fresh concrete shall be taken as per accepted standard [6-5B(19)] and cubes shall be made, cured and tested at 28 days in accordance with the accepted standard [6-5B(22)].
15.2 In addition to the tests required as per Part 6 'Structural Design, Section 5 Concrete, Subsection 5A Plain and Reinforced Concrete' of the Code, additional cube tests should be conducted at appropriate intervals to ensure that the concrete strength in the member at transfer conforms to the design requirements.
16 ACCEPTANCE CRITERIA
The provisions of Part 6 ‘Structural Design, Section 5 Concrete, Subsection 5A Plain and Reinforced Concrete’ of the Code shall apply.
17 INSPECTION AND TESTING OF STRUCTURES
The provision of Part 6 ‘Structural Design, Section 5
PART 6 STRUCTURAL DESIGN — SECTION 5 CONCRETE: 5B PRESTRESSED CONCRETE
Concrete, Subsection 5A Plain and Reinforced Concrete' of the Code shall apply, except for the following:
a) The test load specified in 16.6.2 of Part 6 ‘Structural Design, Section 5 Concrete, Subsection 5A Plain and Reinforced Concrete’ of the Code shall be limited to full dead load of the structure plus design imposed load.
b) For Type 1 and Type 2 structures (see 19.3.2), if within 24 h of removal of the imposed load, the structure does not recover at least 85 percent of the deflection under imposed load, the test may be repeated after a lapse of 72 h. If the recovery is less than 90 percent, the structure shall be deemed to be unacceptable.
c) For Type 3 structures (see 19.3.2), if within 24 h of the imposed load, the structure does not recover at least 75 percent of the deflection under imposed load, the test may be repeated after a lapse of 72 h. If the recovery is less than 80 percent, the structure shall be deemed to be unacceptable.