Archtoolbox: The Online Technical Resource for Architects
We keep it simple. Find it quick. Save your time.
Our Most Popular Articles
- CAD Scale Factors
- Concrete Block Sizes and CMU Dimensions
- MasterFormat Specification Divisions (CURRENT)
- R-values of Insulation and Other Building Materials
- Calculating Slope and Common Slopes in Architecture
- Converting Between Drawing Scales
- Sprinkler Head Spacing and Location
- Architectural Floor Plan Symbols
- Construction Document Sheet Numbers and Sheet Order
- Brick Sizes
Our Most Recent Articles
- LEED Exam Study Guides and Practice Tests
- Dimensional Lumber Sizes: Nominal vs. Actual
- Architect Registration Exam (ARE) Prep
- Architect Credential Info by State: CEU, Stamps, Fees, Renewals
- Architectural Acoustics - Acceptable Room Sound Levels
- Recommended Lighting Levels in Buildings
- Floor Slip Resistance: SCOF vs DCOF (Coefficient of Friction)
- Electrical Conduit Types
- Spray Applied Fireproofing
- Refrigerants Used in Buildings and HVAC Equipment