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Hydrostatic Pressure Formula:
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Hydrostatic pressure in concrete formwork refers to the lateral pressure exerted by fresh concrete on the formwork surfaces. This pressure increases with depth and is a critical factor in formwork design to prevent failure during concrete placement.
The calculator uses the hydrostatic pressure formula:
Where:
Explanation: The pressure increases linearly with depth and depends on the density of the concrete and gravitational force.
Details: Accurate pressure calculation is crucial for designing formwork that can safely contain fresh concrete without deformation or failure, ensuring construction safety and concrete quality.
Tips: Enter concrete density (typically 2400 kg/m³ for normal weight concrete), gravitational acceleration (9.81 m/s²), and height of concrete pour. All values must be positive.
Q1: What is typical concrete density?
A: Normal weight concrete typically has a density of 2400 kg/m³, but this can vary with mix design and aggregates.
Q2: Does concrete behave as a true fluid?
A: Fresh concrete exhibits fluid-like properties but is non-Newtonian. The hydrostatic assumption provides a conservative estimate for formwork design.
Q3: What are maximum recommended pour rates?
A: Pour rates vary based on concrete consistency and formwork design, but typically range from 1-2 meters per hour for vertical formwork.
Q4: Are there other factors affecting formwork pressure?
A: Yes, concrete temperature, setting time, vibration, and chemical admixtures can all influence the actual pressure exerted on formwork.
Q5: What safety factors should be applied?
A: Engineering standards typically recommend safety factors of 1.5-2.0 for formwork design, considering potential overload and material variations.