Fundamentals Of Site Grading Plan

Site grading design specifies the details that will appear on the surface after construction. A civil engineer usually builds a representation of the expected appearance of the ground after construction. There are various site gradings designs like hillside grading design and each will use the final grades from both susceptible and previous areas respectively. 

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To show how a plan layout might look on a two-dimensional plane, the engineer will use a site-grade plan.

The Land Development process is dependent on the quality of site grading plans. Over time, the approval processes for land development and zoning have improved. As Planning Boards/Commissions become more powerful and have greater authority, the entitlement process for an owner seeking construction permits to obtain zoning support has become more complicated.

Site Grading Plan documents tend to be multi-sheet plans that include a Drainage and Grading plan. These two sub-disciplines can be divided into separate sheets if the project is large enough. Each sheet will have a separate, but linked, Grading design and Drainage Plan. It is normally divided at the discretion of the engineer but may be required by the Authority with Jurisdiction's codes and standards.

In the case of drainage plans and separate grading, the Drainage Plan will usually include details such as rim/grate elevations and invert elevations (bottom pipe)) that are associated with inlets (catch bowls), storm manholes, and flared outlet structures.

The site grading plan, although it is only one component of the overall land development planning, is an essential one. This plan will ensure that your land development is accessible, drains well, and meets all applicable regulations. Without a site grading plan, your land development project is going to be very difficult.