How to Calculate the Capacity of Rectangular or Square GRP Water Storage Tank

Calculating the capacity of a GRP water tank depends on its Length, Width and Height. Here are the most common methods:

Formula:The volume V is calculated as:

V=Length×Width×Height 

Steps:

1. Measure Internal Dimensions:
   Use a tape measure to record the inside dimensions (in any unit):

   • Length (L): Longest horizontal side.

   • Width (W): Shorter horizontal side (equal to length for square tanks).

   • Height (H): Vertical distance from the base to the top rim.

2. Convert Units (If Necessary):
   Ensure all dimensions are in the same unit (e.g., meters, feet, inches).

   • Conversion Factors:

     • 1 meter (m) = 100 centimeters (cm)

     • 1 foot (ft) = 12 inches (in)

3. Calculate Volume:
   Multiply the three dimensions:

   Vcubic=L×W×HVcubic​=L×W×H

   Result is in cubic units (e.g., m³, ft³, cm³).

4. Convert to Desired Capacity Unit:

   • For Liters (L):

     • If dimensions in meters (m):

       Vliters=(L×W×H)×1000Vliters​=(L×W×H)×1000

       (Example: $2\text{m}\times 1.5\text{m}\times 1\text{m}=3\text{m³}=3\times 1000=3000\text{L}$)

     • If dimensions in centimeters (cm):

       Vliters=L×W×H1000Vliters​=1000L×W×H​

       (Example: $200\text{cm}\times 150\text{cm}\times 100\text{cm}=3,000,000\text{cm³}=3,000,000/1000=3000\text{L}$)

     • If dimensions in feet (ft):

       Vliters=(L×W×H)×28.3168Vliters​=(L×W×H)×28.3168

       (Example: $6.56\text{ft}\times 4.92\text{ft}\times 3.28\text{ft}\approx 106\text{ft³}=106\times 28.3168\approx 3000\text{L}$)

     • If dimensions in inches (in):

       Vliters=(L×W×H)×0.0163871Vliters​=(L×W×H)×0.0163871

       (Example: $78.74\text{in}\times 59.06\text{in}\times 39.37\text{in}\approx 183,000\text{in³}=183,000\times 0.0163871\approx 3000\text{L}$)

   • For US Gallons (gal):

     Vgallons=Vliters÷3.78541Vgallons​=Vliters​÷3.78541

     (Example: $3000\text{L}÷3.78541\approx 793\text{gal}$)

Key Notes:

• GRP-Specific Considerations:

  • Account for internal reinforcements (e.g., baffles, ribs) by reducing the measured height/width slightly if they intrude into the tank space.

  • Ensure measurements exclude the thickness of walls (measure from inside surface to inside surface).

• Precision: Use consistent units and precise tools. Round the final result to 2 decimal places.

• Safety: The calculated capacity is the total physical volume. Operational fill levels should be ≤90% to allow for expansion.

Example Calculation:

Tank Dimensions:

• Length $=2.5\text{m}$

• Width $=1.2\text{m}$

• Height $=1.8\text{m}$

Volume in Liters:

$$V=(2.5\times 1.2\times 1.8)\times 1000=5.4\times 1000=5400\text{L}$$

Volume in US Gallons:

$$V=5400÷3.78541\approx 1427\text{gal}$$

Final Answer:

The tank capacity is 5400 liters or 1427 US gallons.

Remember: Always verify with manufacturer specifications if available, as GRP water tanks may have design variations affecting net capacity.

 

Inquiry please contact:

Email : cn@cnhbwatertank.cn
Whatsapp✆:+86 15350598856
Web: www.cnhbwatertank.cn
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