GLULAM

 ... here are some industry publications on Glulam. 

APA's thing: http://www.apawood.org/pdfs/download_pdf.cfm?PDFFilename=managed/E30_Glulam.pdf  (you have to register, free, if you haven't already, to see their stuff)

AITC's stuff:

     General: http://www.aitc-glulam.org/glulam.asp

     Span Table for 24F-V4 DF for FLOOR OCCUPANCY LIVE LOAD ... here

     Span Table for 24F-V4 DF for ROOF SNOW LOAD ... here

     Span Table for 24F-V4 DF for ROOF CONSTRUCTION LOAD ... here


Enjoy!