Get the free Impervious-Pervious Calculation Forms - Oakland Park FL

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How to fill out impervious-pervious calculation forms

How to fill out impervious-pervious calculation forms:

1. Start by gathering all the necessary information such as the area for which the calculations are being done, the types of surfaces present (impervious or pervious), and any relevant rainfall data.
2. Section off the area into impervious and pervious categories, clearly marking which areas fall under each classification.
3. Measure the total area of the impervious surfaces, including things like rooftops, parking lots, and sidewalks.
4. Calculate the runoff coefficient for each impervious surface, which is a measure of how much rainwater runs off from that particular surface. This can typically be found in tables or guidelines provided by the relevant authorities.
5. Multiply the area of each impervious surface by its corresponding runoff coefficient to determine the runoff volume from each surface.
6. Sum up the runoff volumes from all impervious surfaces to get the total impervious runoff volume.
7. Measure the total area of pervious surfaces, such as lawns, gardens, or vegetated areas.
8. Determine the infiltration rate for the pervious surfaces, which is a measure of how much rainfall can be absorbed by the soil in that area. This information can often be obtained from soil analysis or local guidelines.
9. Multiply the area of each pervious surface by its infiltration rate to calculate the total infiltration volume.
10. Sum up the infiltration volumes from all pervious surfaces to get the total pervious infiltration volume.
11. Subtract the pervious infiltration volume from the impervious runoff volume to obtain the net runoff volume.
12. Use this net runoff volume to determine if any additional stormwater management practices, such as detention basins or rain gardens, are necessary to prevent flooding or erosion.
13. Complete the remaining sections of the impervious-pervious calculation form, including providing any relevant contact information and certifications.
14. Review the form for accuracy and completeness before submitting it to the appropriate authority.

Who needs impervious-pervious calculation forms:

1. City planners and engineers who are designing or assessing stormwater management systems.
2. Property developers who are required to comply with regulations related to stormwater runoff.
3. Municipalities or government agencies responsible for monitoring and controlling stormwater management.
4. Environmental consultants or scientists studying the impact of urban development on water resources.
5. Anyone involved in construction projects that have the potential to affect the natural drainage patterns of an area.

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