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The ASTM E1557 UNIFORMAT II Standard provides a common structure for describing major building systems linking building conceptual design, cost estimating, facilities management, and life-cycle cost engineering.

The UNIFORMAT organizes information by functional elements (systems and assemblies) with the primary purposes of identifying functional elements in BIM models, and organizing preliminary project descriptions and early cost estimates.


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Uniformat Levels and Titles

A Substructure

  • A10 Foundations
  • A20 Basement Constructions

B Shell

  • B10 Superstructure
  • B20 Exterior Enclosure
  • B30 Roofing

C Interiors

  • C10 Interior Construction
  • C20 Stairs
  • C30 Roofing

D Services

  • D10 Conveying Systems
  • D20 Plumbing
  • D30 Heating, Ventilating, and Air Conditioning (HVAC)
  • D40 Fire Protecting Systems
  • D50 Electrical Systems

E Equipment and Furnishings

  • E10 Equipment
  • E20 Furnishings

F Special Construction and Demolition

  • F10 Special Construction
  • F20 Selective Demolition

G Building Sitework

  • G10 Site Preparation
  • G20 Site Improvements
  • G30 Site Civil/Mechanical Utilities
  • G40 Site Electrical Utilities
  • G90 Other Site Construction

Z General

  • Z10 General Requirements
  • Z20 Bidding Requirements, Contract Forms ..
  • Z90 Project Cost Estimate
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Related Topics


Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.

Process Control Systems Documentation

Documentation of process control systems - Block Flow Diagrams (BFD), Process Flow Diagrams (PFD), Piping and Instrumentation Diagrams (P&ID) and more.

Related Documents

BFD - Block Flow Diagram

A Block Flow Diagram is a schematic illustration of a major process.

Bid - Work Flow Template

A bid work flow template - Online with Google Docs.

Cash Flow Diagrams

The future value of money.

Contract Types

Commonly used engineering and construction contracts.

CSI MasterFormat Specifications

Construction Specifications Institute's 2004 Master-Format Edition.

HVAC Diagram - Online Drawing Tool

Draw HVAC diagrams online with this Google Drive drawing tool.

Internal Rate of Return - IRR

Internal Rate of Return (IRR) - the break-even interest rate.

Markup and Gross Profit

Profit vs. markup.

Net Present Worth (NPW) of a Cash Stream

The value of a stream of payments is called the Net Present Worth (NPW).

P&ID - Piping and Instrumentation Diagram

Schematic illustration of a functional relationship between piping, instrumentation and system components.


Working with relative values.

Present Value

The value of money in the future is the Present Value.

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Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!


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