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<br />Chapter I Introduction <br /> <br />HEC-RAS Documentation <br /> <br />The HEC-RAS package includes several documents. Each document is <br />designed to help the modeler learn to use a particular aspect of the modeling <br />system. The documentation has been broken up into the following three <br />categories: <br /> <br />Documentation <br /> <br />Description <br /> <br />User's Manual <br /> <br />This manual is a guide to using HEC-RAS. <br />The manual provides an introduction and <br />overview of the modeling system, installation <br />instructions, how to get started, simple <br />examples, detailed descriptions of each of the <br />major modeling components, and how to view <br />graphical and tabular output. <br /> <br />Engineering Reference <br /> <br />This manual describes the theory and data <br />requirements for the hydraulic calculations <br />performed by HEC-RAS. Equations are <br />presented along with the assumptions used in <br />their derivation. Discussions are provided on <br />how to estimate model parameters, as well as <br />guidelines on various modeling approaches. <br /> <br />Applications Guide <br /> <br />This document contains a series of examples <br />that demonstrate various aspects of HEC- <br />RAS. Each example consists of a problem <br />statement, data requirements, general outline <br />of solution steps, displays of key input and <br />output screens, and discussions of important <br />modeling aspects. <br /> <br />Overview of This Manual <br /> <br />This user's manual is the primary piece of documentation on how to use the <br />HEC-RAS system. The manual is organized as follows: <br /> <br />. Chapters 1-2 provide an introduction and overview ofHEC-RAS, as <br />well as instructions on how to install the software. <br /> <br />. Chapters 3-5 describe how to use the HEC-RAS software in a step- <br />by-step procedure, including a sample problem that the user can <br />follow along with. Understanding how this system works with <br />projects is also discussed. <br /> <br />1-5 <br />