Page 28 - SandyBankBayDesignGuidelines.pdf

2.0 SITE & LANDSCAPE
• Impervious surfaces are to be minimized to the fullest extent feasible to encourage water percolation. e use of more pervious materials, such as compacted decomposed granite, crushed rock, porous concrete, or open-celled pavers, is encouraged. Additional measures should be taken to prevent water damage to house foundations. is may include sloping grades away from the house at a minimum of 1⁄2 inch to the foot and/or damp proofing foundations.
• Gutters and downspouts are to direct drainage away from foundations and paved surfaces into natural drainage systems such as crushed rock beds or naturalized swales wherever possible. Drainage is not to be directed onto adjacent Homesites, marine resources, the beach or trails.
• Grass, mulch or gravel is to be placed under the dripline of non- guttered roofs to prevent soil erosion and to increase ground absorption.
• Headwalls, lined ditches, and similar drainage structures are to be screened from public viewpoints. Where visible from other off site areas, they are to be built of, or lined with, an approved stone or treatment. Metal and concrete pipes are to be concealed.
• Small swale and water features, such as fountains and reflecting pools, may be built within the Improvement Envelope and are to serve both as aesthetic and drainage elements.
Figure . - Pervious path blends in with setting
28 SANDY BANK BAY DESIGN GUIDELINES