Conceptual Design Stage

Definition

The conceptual design stage is the initial phase in project development where various design schemes are priced and evaluated to ensure the project remains within budget. This stage involves comparing different materials and methods to identify the most cost-effective and feasible design.

Purpose

The purpose of the conceptual design stage is to develop a design scheme, program, and estimate that align with the project's budget. This stage helps the design team make informed decisions by evaluating different systems and materials, ensuring the project's feasibility before detailed design work begins.

Examples of Use

• An architect might use the conceptual design stage to compare the costs of different building layouts and materials to find the most economical solution.
• Developers use this stage to ensure that the project design fits within financial constraints by evaluating various construction methods.
• Engineers might use conceptual design estimates to choose between alternative structural systems based on cost and performance.

Related Terms

• Schematic Design: The phase following conceptual design, where the chosen design scheme is further developed.
• Design Development: A detailed phase where the chosen design is fully developed and finalized.
• UniFormat: A classification system for organizing construction information, used in conceptual design for cost estimation.

Notes

At this stage, estimates may include a contingency ranging from 10% to 20% to account for uncertainties. The use of UniFormat facilitates quick evaluation and decision-making.