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`PWP = h_U *gamma_(Water)`

Enter a value for all fields

**Pore Water Pressure (PWP)** is the product of the uplift defined by the depth of the water table,`h_U`, and the specific weight (or unit weight) of water, `gamma_W`. Generally, PWP is a measure of the pressure of groundwater held within a soil or rock, in gaps between particles (pores), relative to atmospheric pressure. PWP is measured in piezometers (u).

In cases where there is no flow, the pore pressure at depth **d **below the water surface is: **u = g _{w} d**

- Underwater Pressure
- Pore Water Pressure
- Osmotic Pressure
- Density of water at STP
- Density of seawater
- Saltwater Intrusion
- Snow or Water Density
- Water Density by Temperature
- Compute the Depth of Water associated with a Pressure
- Bernoulli's Equation (Pressure)
- Bernoulli's Equation (Velocity)
- Bernoulli's Equation (Elevation)
- Volume of Water in a Well

**Rolling Offsets (Run and Travel)**– The Rolling Offset**Rolling Offset Lengths**function computes the run and travel length a rolling offset based on the offsets and fittings. (see diagram).**Pipe Grading****Diagonal of a Square**- This is a simple calculation to assist in computing the diagonal of a square.**Diagonal of a Box**- This computes the length of the diagonal of a box (**T**) based on sides of length**R, S**and**U**.**Flow Rate**- This computes flow rate based on the total volume and the time it took to accumulate.**Pipe Flow Volume**- This computes the total volume from a pipe based on the flow rated and the duration of flow.**Weight of Water in a Tank**- Computes the weight of water in a cylindrical tank based on the radius and height (or length).**Weight of Water in a Pipe**- Computes the weight of water or other substances in a pipe based on the dimension and material density.**Weight of Sea Water in pipe**- Computes the weight of sea water in a cylinder based on the radius and height (or length)**Pressure Head**- The Potential Gravity-Fed Water Pressure from a Tank (a.k.a. Pressure Head) based on the height of storage.**Pipe Volume**- Computes the volume in a pipe**Pipe Surface Area**- Computes the surface area of a pipe.**Pipe Coating Amount**- Computes the volume of coating material for a pipe such as paint, polyethylene, polyurethane, zinc, bitumen, FBE or mortar.**Pipe Grading**- Compute the drop needed over a run to maintain a grade (e.g., 4" over 12')**Volume of Water in a Tank**(e.g. hot water tanks),**Volume of a Spherical Container****Weight of Water in a Spherical Container****Volume of Water in Rectangular Tank****Weight of Water in a Rectangular Tank****Capillary Rise**- The height of water in a small tube due to capillary force.**Snow Water Equivalence**- The volume of water created by an area and depth of snow.**Pore Water Pressure**- Pressure of uplift from the water table.**Pipe Stress Budget -**Computes the pressure that a pipe can withstand based on the allowable stress, wall thickness and outside diameter.