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Uniformat

Reference data and engineering information about uniformat for miscellaneous applications.

uniformat

Overview

Engineering reference data for Uniformat in miscellaneous.

Key Formulas

Unit Conversion

y=xky = x \cdot k

Multiply by conversion factor.

Linear Interpolation

y=y1+(xx1)(y2y1)x2x1y = y_1 + \frac{(x - x_1)(y_2 - y_1)}{x_2 - x_1}

Estimate between two known points.

Percentage

p=partwhole×100%p = \frac{\text{part}}{\text{whole}} \times 100\%

Part as fraction of whole.

Variables

SymbolDescriptionUnit
xxInput value
yyOutput value
kkConversion factor

UNIFORMAT II Hierarchical Structure

The UNIFORMAT system organizes building elements into a three-level hierarchical classification. This structure is fundamental for creating standardized preliminary designs, cost estimates, and BIM element categorization.

33 rows
ASTM E1557 UNIFORMAT II Building Element Classification
Code
Level
Title / Description
ALevel 1Substructure
A10Level 2Foundations
A20Level 2Basement Constructions
BLevel 1Shell
B10Level 2Superstructure
B20Level 2Exterior Enclosure
B30Level 2Roofing
CLevel 1Interiors
C10Level 2Interior Construction
C20Level 2Stairs
C30Level 2Roofing
DLevel 1Services
D10Level 2Conveying Systems
D20Level 2Plumbing
D30Level 2Heating, Ventilating, & Air Conditioning (HVAC)
D40Level 2Fire Protecting Systems
D50Level 2Electrical Systems
ELevel 1Equipment & Furnishings
E10Level 2Equipment
E20Level 2Furnishings
FLevel 1Special Construction & Demolition
F10Level 2Special Construction
F20Level 2Selective Demolition
GLevel 1Building Sitework
G10Level 2Site Preparation
G20Level 2Site Improvements
G30Level 2Site Civil/Mechanical Utilities
G40Level 2Site Electrical Utilities
G90Level 2Other Site Construction
ZLevel 1General
Z10Level 2General Requirements
Z20Level 2Bidding Requirements, Contract Forms
Z90Level 2Project Cost Estimate

Source: ASTM International

Purpose and Usage

This standardized classification is used to:

  • Organize BIM Models: Assign functional element codes to 3D model components for consistent data extraction.
  • Structure Preliminary Estimates: Create early-stage cost models aligned with the building's physical systems.
  • Facilitate Life-Cycle Analysis: Link initial design elements to long-term operational, maintenance, and replacement costs.
  • Standardize Documentation: Ensure project descriptions, specifications, and facilities management data use a common language.

The corresponding calculation template helps structure cost data according to this hierarchy.

References