Pre-1970 Produced Glulams
Pre-1970 Produced Glulams
(OP)
I have an existing building using glulam beams for the roof structure. I need to verify engineering properties (Fb) of the existing glulams.
Does anyone know of a glulam inspector/expert or firm that does such inspections?
Does anyone know of a glulam inspector/expert or firm that does such inspections?





RE: Pre-1970 Produced Glulams
Leslie Sales
RE: Pre-1970 Produced Glulams
RE: Pre-1970 Produced Glulams
The building is located in plains states
RE: Pre-1970 Produced Glulams
RE: Pre-1970 Produced Glulams
RE: Pre-1970 Produced Glulams
RE: Pre-1970 Produced Glulams
Dik
RE: Pre-1970 Produced Glulams
Water resistant casein adhesive was typically used in the glued laminated timber industry for all interior applications until the 1960s. Some firms still used it into the 1970s. Casein adhesive is easy to spot - it is white. the glue lines will be white. It is an excellent adhesive for interior applications. It is not waterproof.
Design values could be all over the board in the 1950s, depending upon what was specified. (same as today). In our 1957 brochure, typical design values listed for Southern Pine glued laminated timber were: Fb=2400psi; MOE=1,800,000psi; Ft parallel=2600psi; Fc parallel=2000psi; Fc perpendicular=385psi; Fv=200psi.
Hope this helps.
RE: Pre-1970 Produced Glulams
Dik
RE: Pre-1970 Produced Glulams
In your thread you referred to our 1957 brochure. Do you work for Sentinal Strutures? The SWC in my user name refers to Structural Wood Corporation in Vadinais Heights Minnesota.
RE: Pre-1970 Produced Glulams