Processing...

`d = ( 0.25 /(12."in"))* "R" + "W" + "x" `

Enter a value for all fields

The **Pipe Grade** calculator computes the depth at the end of a trench needed for a pipe to be laid with a desired grade.

**INSTRUCTIONS:** Choose units and enter the following:

- (
**G**) Drop per 12" (e.g., 1/8" = 0.125 1/4" = 0.25) - (
**R**) Run of Pipe - (
**W**) Outer width of the pipe - (
**x**) Adder

**Depth of Trench (D)**: The calculator returns the depth in inches. However, this can be automatically converted to compatible units via the pull-down menu.

The depth (d) of the fall is a function of the Run (R) and the grade (G):

d = G/(12 inches) *R

where:

- d = vertical displacement
- G = grade in inches drop per foot
- R = horizontal displacement

The end depth of the trench is:

D = d + W + x

where:

- D = Depth of Trench
- d = drop over the run
- W = outer diameter of the pipe
- x = adder for fittings

- Rolling Offsets (Run) – The Rolling Offset (Run) function computes the run length a rolling offset based on the offsets and fittings. (see diagram).
- Rolling Offsets (Travel) – The Rolling Offset (Travel) function computes the travel pipe length a rolling offset based on the offsets and fittings. (see diagram).
- Pipe Grading - The amount of drop needed over a run to maintain a specified grade
- 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.
- Volume of a Pipe
- Weight of Pipe Contents: Default is water. Also see Weight of sea water in pipe
- Volume of a Cylindrical Container (e.g. hot water tanks),
- Weight of Water in a Cylindrical Tank (e.g. hot water tanks),
- Volume of a Spherical Container,
- Weight of Water in a Spherical Container
- Volume of a Rectangular container
- Weight of Water in a Rectangular Container, and a
- 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.
- Pressure Head - The Potential Gravity-Fed Water Pressure from a Tank (a.k.a. Pressure Head) equation calculates the water pressure that can be realized below a tank based on the height of storage.