American Wood Council
Great source of wood construction publications and cad details.
Wood Connectors:
Simpson Strong-Tie
USP Connectors
Joists and Beams:
Boise Cascade
Trim Joist Corporation
Georgia-Pacific Building Products
Anthony Forest
Structural Sheathing
APA Engineered Wood Association
Norbord – Windstorm

Light Gauge Steel:
Gage to Mill Conversion
25 Gauge-0.0179″€ = 18 mil
22 Gauge-0.0269″€ = 27 mil
20 Gauge-0.0329″ = 33 mil
18 Gauge-0.0428″ = 43 mil
16 Gauge-0.0538″€ = 54 mil
14 Gauge-0.0677″ = 68 mil
12 Gauge-0.0966″= 97 mil
10 Gauge-0.1180″€ = 119 mil
LGS General Construction Links:
Applied Science International
Light gauge steel construction software with cad details (SSS 7.x).
The Steel Network
Light gauge steel construction software, publications and cad details.
clarkDietrich Building Systems
Light gauge steel construction publications and cad details.
Aegis Metal Framing
Light gauge steel construction publications and cad details.
LGS Connections:
Simpson Strong-Tie
USP Structural Connectors

Concrete and ICF:
Concrete General Links:
Portland Cement Association
ICF Walls:
Ambic Building System
ICF Decks:
AmDeck Floor & Roof System