When choosing BRC (British Reinforced Concrete) fabric mesh for swimming pool construction, the size of the squares (mesh aperture) and the thickness of the bars (diameter) both matter greatly. Here’s how to choose the right one:
Recommended BRC Mesh for Swimming Pools
Mesh Type:
Common types include A-series (light duty) and B-series (heavy duty). For swimming pools, BRC B785, B1131, or custom high-tensile mesh are often used.Bar Diameter:
Preferably 8mm to 12mm bars, depending on the structural design. Thicker bars provide more strength but are harder to work with on tight curves.Mesh Aperture (Square Size):
Smaller squares (e.g., 150mm x 150mm):
Better crack control, stronger reinforcement.
Ideal for pool walls and curved surfaces where tension is higher.
Ensures even load distribution and support for gunite or shotcrete application.
Wider squares (e.g., 200mm x 200mm or larger):
May be suitable for floor slabs only if low load or with additional reinforcement.
Not ideal for curved walls or tension-prone areas due to less reinforcement per square meter.
Best Practice:
Use smaller aperture mesh (e.g., 150mm) for:
Pool walls
Curved areas
Structural areas under tension
Use wider mesh or bar chairs with additional reinforcement if:
Building large floor slabs with low tension
You supplement with rebar rods or extra mesh layers
Engineering Note:
Always check with a structural engineer, especially if you’re building a concrete or shotcrete/gunite pool, since local codes (like BS 4449 or ACI standards) may specify exact mesh requirements.
Summary:
FeatureSmaller Squares (150x150mm)Larger Squares (200x200mm)Crack Control
Excellent
LimitedStrength per m²
Higher
LowerPool Walls
Recommended
Not idealFlat Slabs
Good
Acceptable (with checks)
Disclaimer:
The information provided is for general guidance only and should not be considered as professional engineering advice. Always consult a qualified structural engineer or construction professional to determine the appropriate materials and specifications for your specific swimming pool project. Local building codes and regulations may vary and must be followed.