您的景观设计师将计算斜坡，并检查您的具体情况土壤类型的大小和计划径流和排水控制。
Your landscape designer will calculate slopes and check soil types to size and plan runoff and drainage control for your situation.
确保您的排水计划斜坡远离家园或其他结构，以防止洪水和水分损失。
Make sure your drainage plan slopes away from homes or other structures to protect against flooding and moisture damage.
大院子应该有不可分割的排水渠或斜坡进行适当的设计，将进行水低谷流失。
Large patios should have integral drains or proper slope design that will carry water to a low point drain.
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