Gutter Spread Spreadsheet

Spread geometry and calculations a curb and gutter combination forms a triangular channel that can carry runoff without interrupting traffic.

Gutter spread spreadsheet.

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. Appendix 9c 8 ratio of frontal flow to total gutter flow. 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. However the use of scuppers should be evaluated for site specific concerns.

The ponded width is a geometric function of the depth of the water y in the curb and gutter section. See hydraulics manual 2 5 2 rainfall intensity inch hr see hydraulics manual 2 5 4. Create a new spreadsheet and edit it with others at the same time from your computer phone or tablet. Spread for a given peak flow q value depends on the type of gutter section used.

The inlet spacing spreadsheet xls 167 kb combines the procedures described in the wsdot hydraulics manual to calculate roadway runoff and inlet interception of a continuous curb and gutter run for a roadway. Free with a google account. Gutter and inlet equations anchor. The larger of the two calculations must be used to balance both the annual runoff and delivered nutrients.

The sag worksheet xls 60 kb uses the procedure described in the wsdot hydraulics manual to locate inlets in a sag condition. The spreadsheet calculates the minimum size of a vta to balance both the site s contributing water runoff and delivered nutrients. Allowable width of flow flow spread or zd allowable 0 1 cfs maximum flow allowed to bypass last inlet qbp if flow is slow enough and gutter is flat spreadsheet allows more flow into inlet automatically done for you flow spreads these equations show the depth of flow as a function of gutter. 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.

Gutter spread should be checked to ensure a safe reasonable design. This spreadsheet calculates the spread width of flow gutter velocity and bypass flow for an inlet installation on a continuous run. Appendix 9c 9 velocity in triangular gutter sections.