Nowadays information systems are increasingly distributed and deployed within the Internet platform. Without any doubt, the World Wide Web represents the de facto standard platform for host- ing such distributed systems. The use of a multi-tiered architecture to develop such systems is often the best design decision to reach scalability, maintainability and reliability quality goals. Software in the presentation-tier of this architecture needs in practice to be designed with structured and reusable library modules. In this paper, we present a hierarchical component model which allows developers to build (model, generate code and then reuse) this software level of rich Web applications. In this model, components can be connected via their interfaces to build more complex components. These architecture design models can be reused together with their corresponding code using an association mechanism. As shown in this paper this is a valuable feature in assisting developers to position their developed documents within the overall software design and thus enable maintaining the consistency between artifacts of these two stages of the development process.