Gutter Spread Spreadsheet

Minutes see hydraulics manual 2 5 3 runoff coefficients for rational method.

Gutter spread spreadsheet.

However the use of scuppers should be evaluated for site specific concerns. Appendix 9c 5 flow characteristic curves straight cross slope 12 gutter appendix 9c 6 flow characteristic curve roll type gutter appendix 9c 7 flow in composite gutter sections. The spread is usually referred to as ponded width t as shown in figure 10 10. Gutter and inlet equations anchor.

Gutter spread gutter spread calculations are required for the driveway if curb and gutter or header curb is used table 6 1 general requirements of hydrology reports separate drainage calculations must be provided for the pre developed condition and for the proposed development. The larger of the two calculations must be used to balance both the annual runoff and delivered nutrients. See hydraulics manual 2 5 2 rainfall intensity inch hr see hydraulics manual 2 5 4. Gutter spread should be checked to ensure a safe reasonable design.

The spreadsheet calculates the minimum size of a vta to balance both the site s contributing water runoff and delivered nutrients. This spreadsheet calculates the spread width of flow gutter velocity and bypass flow for an inlet installation on a continuous run. The ponded width is a geometric function of the depth of the water y in the curb and gutter section. Create a new spreadsheet and edit it with others at the same time from your computer phone or tablet.

Triangle or multi triangle. Spread geometry and calculations a curb and gutter combination forms a triangular channel that can carry runoff without interrupting traffic. Free with a google account. The sag worksheet xls 60 kb uses the procedure described in the wsdot hydraulics manual to locate inlets in a sag condition.

Appendix 9c 8 ratio of frontal flow to total gutter flow. Appendix 9c 9 velocity in triangular gutter sections. Scuppers are the recommended method of deck drainage because they can reduce the problems of transporting a relatively large concentration of runoff in an area of generally limited right of way.