Chapter 1: General Guidance

1.1 Overview

The PS&E Preparation Manual (PS&E Manual) provides information, guidance and references needed for the development of the plans, specifications and estimate (PS&E) for a transportation construction project at the Texas Department of Transportation (TxDOT). PS&E is prepared during the final design phase of project development as shown in

Figure 1-1

Plans are defined as the drawings approved by the Engineer, including true reproductions of the drawings that show the location, character, dimensions, and details of the work and are a part of the Contract. Documents may include drawings or digital files (definition per the current Standard Specifications).

The three main purposes of the plans are:

For prospective bidders to prepare a bid as accurately as possible;

For state construction inspector-contractor teams to oversee and perform construction efficiently and accurately; and

To provide an accurate record of the construction for future reference.

Accurate and clear plans are essential in obtaining accurate bids, efficient construction, and good permanent records. Unclear and/or incorrect plans usually result in increased costs and more work for TxDOT personnel for the following reasons:

Incomplete or inaccurate plans require additional handling and processing and, therefore, cost the State more time and money due to the following reasons:

Data that is unclear or interpreted in more than one way can result in higher bid prices by contractors. Unclear data can also result in claims for more compensation and/or more working days by the contractor after award of the contract; and

Incorrect or incomplete plans can precipitate change-orders which require additional processing, usually increase costs, and cause project delays.