Resources for Building Professionals

US/International

CSI MasterFormat 2016

Interactive guide to the Construction Specifications Institute's standard classification system. Browse all 50 divisions with 8,800+ searchable codes.

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Australia

NATSPEC Worksections 2017

Comprehensive reference for Australia's National Building Specification system. Includes NATSPEC building worksections and AUS-SPEC infrastructure.

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UK/International

Uniclass 2015

The unified classification system for the UK construction industry. Browse 12,400+ items across Complexes, Entities, Activities, Spaces, Elements, Systems, and Products.

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US/International

OmniClass (OCCS)

The OmniClass Construction Classification System. Browse 8,500+ items covering Space by Function, Elements, and Work Results tables.

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Elemental

UniFormat II

ASTM E1557 elemental classification for building systems and assemblies. Essential for preliminary estimating and cost planning by building element.

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BIM

IFC Viewer

View and explore IFC (Industry Foundation Classes) BIM files directly in your browser. Extract quantities, view model hierarchy, and inspect element properties.

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Estimating

Estimator's Formulas

Essential construction formulas for area, volume, concrete, masonry, roofing, earthworks, steel, and finishes. All calculations in metric with waste factors.

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Calculator

Unit Converter

Convert between metric and imperial measurements for length, area, and volume. Essential tool for working with international drawings and specifications.

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Procurement

Units of Purchase

Comprehensive guide to purchasing units in construction - pallets, bundles, bags, sheets, rolls, and 50+ more. Essential for accurate procurement and estimating.

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Checklists

Estimating Checklists

Trade-by-trade scope checklists covering 12 trades and 180+ items. Track progress, save state, and ensure nothing is missed in your estimates.

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AU/UK Standards

Standard Method of Measurement

Australian (ASMM) and UK (NRM2) measurement rules for all trades. Learn correct units, deduction rules, and what to include in quantities.

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Drawings

Construction Symbols Library

Reference guide for architectural, structural, mechanical, electrical, and plumbing symbols used in construction documentation.

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Reference

Abbreviations Dictionary

Searchable database of 300+ construction abbreviations across all trades. Filter by category with instant search.

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Standards

Drawing Naming Conventions

Standard prefixes, sheet numbering systems, and file naming protocols for construction drawings and documentation.

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BIM/IFC

IFC Entity Reference

Searchable guide to IFC classes and properties. Core, Shared, Domain and Resource entities with property sets and usage notes.

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BIM/LOD

LOD Specification Guide

Level of Development expectations from LOD 100 to LOD 500. Geometric detail, data requirements, and project stage mapping.

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BIM/COBie

COBie Reference

Construction Operations Building information exchange worksheets. Core and supporting sheets, data relationships and validation.

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BIM/IDS

IDS Reference

Information Delivery Specification standard. Facets, requirements, XML structure, and common use cases for BIM validation.

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BIM/bSDD

bSDD Guide

buildingSMART Data Dictionary concepts. Dictionaries, classifications, properties, API integration and best practices.

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