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FDOT Drainage Handbook - Drainage Connection Permits

Reference

Handbook describing the permitting process regulating the transfer of stormwater from private property owners to the State of Florida Department of Transportation stormwater drainage systems.

A molded plastic drainage board rainscreen allows vertical drainage while providing uniform support for the siding and resisting compression from screws and nails.

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Building Enclosure: Stone Veneer Installation Interior Drainage Plane

Video

Technology Solutions Case Study: Guidance on Taped Insulating Sheathing Drainage Planes

Case Study

Case study describing best practices for using rigid foam sheathing as a drainage plane in new and retrofit wall construction.

This double French drain provides drainage for a significant volume of storm water.

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Poor drainage conditions can enable water to pool around the home.

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The sheathing has rotted because there was not a sufficient drainage gap behind the stucco cladding

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Right – Furring strips provide a drainage gap between the rigid foam and the siding.

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Right – Furring strips provide a drainage and ventilation gap between the siding and the cork insulation.

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Right – The building felt is installed on all exterior walls and provides a complete drainage system

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Install all layers of the drainage plane to overlap, not underlap, to direct bulk water down and out of the wall.

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Right – The water-resistant barrier covers the entire house and the seams are taped to provide a complete drainage system

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Right – The rigid insulation covers all exterior walls and all seams are taped to provide a complete drainage system

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House wrap is sealed at all seams and overlaps flashing to serve as a continuous drainage plane over the exterior walls.

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A plastic fiber drainage mat rainscreen provides uniform support for the siding and allows moisture to flow horizontally and diagonally in addition to vertically.

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A continuous drainage mat rainscreen made from vacuum-molded plastic provides uniform support for the siding and allows moisture to flow horizontally and diagonally in addition to vertically.

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Rigid foam insulation can serve as the drainage plane when all seams are taped. Furring strips provide an air gap behind the cladding.

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Good water management practices like sloping grade away from house, and installing gutters, perimeter drain pipe, a capillary break, and free-draining soils or drainage mat protect the foundation from water saturation.

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The “down” and “out” approach to flashing – metal flashing directs water down and out of building assemblies

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Erosion & Sediment Control Requirements

Video

Video from LGL Archive Page (City of Lexington Kentucky) explaining the steps needed to take to ensure proper site drainage prior to new home construction.

This fastener schedule for metal panel siding shows denser spacing for the end panels to resist stronger wind pressures. Some manufacturers specify that panels be installed with the prevailing wind - in this example wind direction is right to left.

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Moisture-, Impact-, Fire-, and Pest-Resistant Exterior Siding

Guide

Guide describing how to select the siding materials best suited to withstand hazards like rain, wind, hail, fire, and pests.

Swales, Drains, and Site Grading for Stormwater Control

Guide

Guide describing the use of swales, French drains, and site grading to minimize saturation of foundations and ponding of stormwater runoff on sites.

Flashing of Penetrations in Existing Roofs

Guide

Guide describing how to provide a continuous water control layer across the roof assembly by sealing all penetrations for pipes, vents, etc. in existing roofs.

Hurricanes and High Winds Overview

Information Guide

Overview guide outlining home construction techniques used in hurricane and high wind areas.

Flooding Overview

Information Guide

Overview guide describing residential floodproofing steps.

Air Sealing Doors Adjacent to Unconditioned Space

Guide

Guide describing how to air-seal doors that are next to unconditioned spaces.