Technical Information

Bridgestone GRP Panel Type Water Storage tanks—also known as FRP tanks in some parts of the world—are manufactured from SMC using the hot pressed metal matched mould method. The process makes the material immensely strong, resulting in a long design life with minimal maintenance. Our tanks are ideal to keep clean water clean and are used for potable water, drinking water, rain water and industrial water supply where pure water is required.

The smooth inner surfaces limit algae and bacterial growth inside the tanks. A look inside a GRP tank—this tank was installed at the Fujitsu Australia Data Centre, Homebush NSW.

Panel Material Characteristics

Description GRP
Specific Gravity 1.8
Glass Content More than 30%
Tensile Strength 1.020 kgf/cm2 (9.996 KN/cm2)
Young's modulus 1.40×105 kgf/cm2 (13.7Gpa)
Flexural strength 1,650 kgf/cm2 (16.17 KN/cm2)
Impact strength 52.5 kgf/cm2 (0.515 KN/cm2)
Compressive strength 3,010 kgf/cm2 (29.50 KN/cm2)
Shear strength 960 kgf/cm2 (9.41 KN/cm2)
Thermal expansion 2.16×10-5/°C
Thermal conductivity
(single panel) 		0.15 Kcal/m hr°C (630 J/ m hr°C)
Thermal conductivity
(insulated panel) 		0.02 Kcal/m hr°C (84 J/ m hr°C)
Co-efficiency of overall heat transmission
(single panel) 		5.0 Kcal/m hr°C (21 KJ/ m hr°C)
Co-efficiency of overall heat transmission
(insulated panel) 		1.0 Kcal/m hr°C (42 KJ/ m hr°C)
Water absorption Less than 0.2%
Cavity Less than 2%
Light transmittance (grey panels) 0.00%

For more information visit the Bridgestone website:

Design Conditions

Depth of Tank (m) Panel Strength kgf/cm2 (Kpa) Hydrostatic Pressure kgf/cm2
1.0 More than 0.6 (59) 0.07 (6.9)
1.5 1.0 (98) 0.12 (12)
2.0 1.3 (130) 0.16 (16)
2.5 1.7 (170) 0.21 (21)
3.0 2.1 (210) 0.26 (25)
3.5 2.5 (250) 0.31 (30)
4.0 2.9 (280) 0.36 (35)