Precast Production Tolerances
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Transcript of Precast Production Tolerances
Precast Production Tolerances
As per production drawings, otherwise follow standard guide for tolerances as attached
in this section.
Guide on Tolerances (RC Component)
Dimensiona) Length of member
- Up to 3m
- 3m to 4.5m
- 4.5m to 6m
- Every subsequent 6m
b) Cross sectional dimension
c) Straightness / Bow (Deviation from intended)
- Up to 3m
- 3m to 4.5m
- 4.5m to 6m
- Every subsequent 6m
d) Squareness / Bow (Different)
- Up to 1.2m (incl.)
- Over 1.2m to less than 1.8m
- 1.8m and over
e) Twist (Differences from other 3 corners)
- Up to 600mm wide and 6m in length
- Over 600mm wide and any length
±6mm
± 9mm
± 12mm
± 6mm (additional)
+ 10mm / - 5mm
6mm
9mm
12mm
6mm (additional)
6mm
9mm
12mm
6mm
12mm
Openinga) Size
b) Location
+ 10mm
± 25mm
Lifting Point / Inserts
Sleeve and Connections
Cast-In Items
Opening for Bolted Connection
Insert Plate
Anchor Bolt (on top of column)
± 20mm
± 6mm
± 6mm
± 3mm
± 5mm
± 2mm