61312 Formwork Square columns shall be formed by formwork on four sides or

61312 formwork square columns shall be formed by

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6.1.3.1.2 Formwork Square columns shall be formed by formwork on four sides or formwork on two sides with blockwork on the other two sides. 6.1.3.1.3 Reinforcement The minimum reinforcement shall be as follows: a) square columns - four 12 mm diameter bars with 6 mm diameter stirrups spaced at 150 mm between centres; and b) round columns - six 12 mm diameter bars with 6 mm diameter stirrups spaced at 100 mm between centres. 6.1.3.1.4 Concrete Columns shall be filled with 1:2:2 nominal mix (refer to Table 4-5 ). The concrete for any height of column shall be placed in one continuous pour with no joints. 6.1.3.2 Lightly loaded columns 6.1.3.2.1 Square columns for porches, carports and other lightly loaded structures may be formed by formwork on four sides or formwork on two sides with blockwork on the other two sides. 6.1.3.2.2 For square columns, the following specific requirements shall apply: a) minimum dimensions shall be 200 mm x 200 mm; and b) the minimum column reinforcement shall be fo ur 12 mm diameter bars with 6 mm diameter stirrups placed at 150 mm between centres . isolated columns may be formed by 200 mm x 200 mm x 200 mm concrete blocks filled and reinforced as required in b) above. 6.1.3.2.3 For round columns, the following specific requirements shall apply: a) round columns with varying cross-section (fancy columns) shall have a minimum diameter of 200mm; and b) the minimum reinforcement shall be six 12 mm diameter bars with 6 mm diameter round stirrups spaced at 150 mm between centres.
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PCTTS 599: 20XX 99 6.1.4 Beams 6.1.4.1 Dimensions The following minimum dimensions shall apply: a) maximum span shall be 5000 mm; b) the minimum section dimensions shall be in accordance with Tables 6-1 to 6-4 ; and c) the minimum depth shall be 300 mm. 6.1.4.2 Formwork Beams shall be formed by formwork on three sides. The bottom formwork shall be adequately propped and rigid enough to support the weight of the wet concrete, normal concreting plant and personnel. The bottom formwork supports shall remain in place for a minimum of 10 days when using ordinary Portland cement for concrete. 6.1.4.3 Reinforcement Horizontal and vertical reinforcement shall be in accordance with Figures 6-16 to 6- 18 and with Tables 6-1 to 6 -4 ; Figure 7-1 gives the beam layout arrangement corresponding to the tables. 6.1.4.4 Concrete Beams shall be filled with 1:2:2 nominal mix (refer to Table 4-5 ). The concrete shall be poured and properly compacted in one operation.
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PCTTS 599: 20XX 100 Table 6-1 Typical reinforcement for concrete beams - 2 way slab and mild steel
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PCTTS 599: 20XX 101 Table 6-2 Typical reinforcement for concrete beams - 1 way slab and mild steel
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PCTTS 599: 20XX 102 Table 6-3 Typical reinforcement for concrete beams - 2 way slab and high tensile steel
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PCTTS 599: 20XX 103 Table 6-4 Typical reinforcement for concrete beams - 1 way slab and high tensile steel
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PCTTS 599: 20XX 104 Figure 6-16 Typical cross-section showing columns, beams and shear panel construction See figures for strip footing Crawl space 300 mm minimum 150mm blockwork (see figures for shear panel) See table for slab reinforcement Ground level First floor b) Section on shear panel See table for beam reinforcement a) Section on beam only
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