Standard Classification for Transportation Surface Elements—UNIFORMAT II

Importancia y uso:

4.1 This standard builds on the concepts and organizational framework established in Classification E1557. This classification describes transportation surface elements that are major components of most vehicular transportation surfaces. The elemental classification is the common thread linking activities and participants in a transportation surface project from initial planning through operations, maintenance, and disposal.

Note 1: As this classification refers solely to permanent, physical parts of any construction, two additional classifications, Classifications E2083 and E2168, need to be included when calculating construction cost. These standards provide for the inclusion of construction enabling, temporary, and risk mitigation cost figures. Procedures for reporting all these figures are described in Practices E1804 and E2514 and Classification E2516. While these three latter standards were primarily written for building construction, they are nonetheless appropriate and readily applied to other forms of construction as well.

4.2 The users of transportation surface UNIFORMAT II include:

4.2.1 Financial and Investment—Typically owners, developers, bankers, lenders, accountants, and financial managers.

4.2.2 Implementation—Primarily project managers; facilities programmers; designers, including engineers; and project controls specialists, including cost planners, estimators, schedulers, specification writers, and risk analysts.

4.2.3 Facilities Management—Comprising property portfolio managers, operating staff, and maintenance staff.

4.2.4 Others—Public officials, manufacturers, educators, students, and other project stakeholders.

4.3 Apply This Classification When Undertaking the Following Work on Transportation Surface Projects:5 

4.3.1 Financing and Investing: 

4.3.1.1 Structuring costs on an elemental basis for economic evaluations (Guide E1185 and Practices E917, E964, E1057, E1074, E1121, and E1804) early in the design process helps reduce the cost of early financial analysis and can contribute to substantial design and operational savings before decisions have been made that limit options for potential savings.

4.3.2 Implementing: 

4.3.2.1 Cost Modeling, Cost Planning, Estimating and Controlling Project Time and Cost During Planning, Design, and Construction—Use the transportation surface UNIFORMAT II classification to prepare budgets and to establish elemental cost plans before design begins. Project managers and project controls specialists use these cost plans against which to measure and control project cost, and quality, and to set design-to-cost targets.

4.3.2.2 Conducting Value Engineering Workshops—Conducting value engineering workshops (Practices E1699 and E2013). Use this classification as a checklist to ensure that alternatives for all elements of significant cost in the transportation surface project are analyzed in the creativity phase of the job plan. Also, use the elemental cost data to expedite the development of cost models for transportation surface systems.

4.3.2.3 Developing Initial Project Master Schedules—Since projects are essentially built element by element, UNIFORMAT II classifications are an appropriate basis for preparing construction schedules at the start of the design process. Project managers and project controls specialists use these time plans against which to measure and control project time (Practice E2691), and to set milestone target dates.

4.3.2.4 Performing Risk Analyses—Simulation (Guides E1369 and E2506) is one technique for developing probability distributions of transportation surface costs when evaluating the economic risk in undertaking a transportation surface project. Use individual elements and group elements in this classification for developing probability distributions of elemental costs. From these distributions, build up probability distributions of total costs to establish project contingencies (Practice E1946 and Classification E2168) or to serve as inputs to an economic analysis.

4.3.2.5 Structuring Preliminary Project Descriptions During the Conceptual Design Phase—This classification facilitates the description of the scope of the project in a clear, concise, and logical sequence for presentation to the client; it provides the basis for the preparation of more detailed elemental estimates during the early concept and preliminary design phases, and it enhances communication between designers and clients by providing a clear statement of the designer’s intent.

4.3.2.6 Coding and Referencing Standard Details in Computer-Aided Design Systems—This classification allows a designer, for example, to reference an assembly according to this classification’s element designations and build up a database of standard details. This is particularly appropriate to design modeling and building information modeling (BIM) applications.

4.3.3 Managing Facilities: 

4.3.3.1 Recording and writing property condition assessment reports in a structured way, using UNIFORMAT II classifications, provides for a consistent, accessible, and searchable database of real property inventory.

4.3.4 Other Activities: 

4.3.4.1 Structuring cost manuals and recording construction, operating, and maintenance costs in a computer database. Having a cost manual or computer database in an elemental format assists the preparation of an economic analysis early in the design stage and at a reasonable cost.

Subcomité:

E06.81

Volúmen:

04.12

Número ICS:

93.080.01 (Road engineering in general)

Palabras clave:

construction; design economics; economic analysis; economic evaluation; elemental/systems classification; elemental transportation surface classification; life-cycle costing; master schedules; outline specifications; preliminary project description; risk analysis; sitework; standard classifications of transportation surface systems; transportation surface assemblies; transportation surface cost estimation; transportation surface cost planning; transportation surface elemental format; transportation surface elements; transportation surface functional elements; transportation surface systems classification; UNIFORMAT II; value engineering;