John Dirks Jr Posted June 12, 2016 Report Share Posted June 12, 2016 I saw something for the first time today. Laminated tounge in groove pine planks that spanned between beams without joists of any kind. The laminated planks were three pieces of pine plank that totaled about 2 or more inches thick. There were three structural beams between the foundation walls instead of the usual one in the middle. That divided the distance from wall to wall into 4 spans. The floors were very solid. Anyone have information on this construction type? Click to Enlarge 35.73 KB Click to Enlarge 54.84 KB Quote Link to comment Share on other sites More sharing options...
Marc Posted June 12, 2016 Report Share Posted June 12, 2016 Might be the 'car garage' planks that Jim K has spoken of a few times. Marc Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted June 12, 2016 Report Share Posted June 12, 2016 Looks like it. What makes you think that the 2x6s are laminated? Traditional construction around here is girders every 3 or 4 feet with 2x6 tongue & groove "car decking" between them. No joists. That usually forms the subfloor though. Very few people use it as a finished floor - although it's like that in my house. Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted June 12, 2016 Author Report Share Posted June 12, 2016 Looks like it. What makes you think that the 2x6s are laminated? Traditional construction around here is girders every 3 or 4 feet with 2x6 tongue & groove "car decking" between them. No joists. That usually forms the subfloor though. Very few people use it as a finished floor - although it's like that in my house. When I pulled a register damper from the main floor I could see a cross section of the laminated planks. I should have took a picture because it was clearly three pieces of 1x6 pine laminated together with tounge in groove cut in to lock it all together. Quote Link to comment Share on other sites More sharing options...
ghentjr Posted June 12, 2016 Report Share Posted June 12, 2016 Looks like it. What makes you think that the 2x6s are laminated? Traditional construction around here is girders every 3 or 4 feet with 2x6 tongue & groove "car decking" between them. No joists. That usually forms the subfloor though. Very few people use it as a finished floor - although it's like that in my house. When I pulled a register damper from the main floor I could see a cross section of the laminated planks. I should have took a picture because it was clearly three pieces of 1x6 pine laminated together with tounge in groove cut in to lock it all together. Google " Deck House ". That is what their flooring systems look like. Quote Link to comment Share on other sites More sharing options...
Jim Baird Posted June 12, 2016 Report Share Posted June 12, 2016 When I pulled a register damper from the main floor I could see a cross section of the laminated planks. I should have took a picture because it was clearly three pieces of 1x6 pine laminated together with tounge in groove cut in to lock it all together. Sounds like a creative carpenter. If you stack and glue them you could just offset the center one to make both tongue and groove, no? I once had some pieces of flooring from an old academic building that was gutted and rebuilt inside. It used solid four by twelve pine joists spaced pretty far with 3X8 pine floorboards grooved both sides and splined. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted June 12, 2016 Report Share Posted June 12, 2016 When I pulled a register damper from the main floor I could see a cross section of the laminated planks. I should have took a picture because it was clearly three pieces of 1x6 pine laminated together with tounge in groove cut in to lock it all together. Sounds like a creative carpenter. If you stack and glue them you could just offset the center one to make both tongue and groove, no? Yes, but be careful not to glue the tongue & groove joints or you'll have an expansion/contraction nightmare. Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted June 12, 2016 Author Report Share Posted June 12, 2016 When I pulled a register damper from the main floor I could see a cross section of the laminated planks. I should have took a picture because it was clearly three pieces of 1x6 pine laminated together with tounge in groove cut in to lock it all together. Sounds like a creative carpenter. If you stack and glue them you could just offset the center one to make both tongue and groove, no? I once had some pieces of flooring from an old academic building that was gutted and rebuilt inside. It used solid four by twelve pine joists spaced pretty far with 3X8 pine floorboards grooved both sides and splined. That's what it was basically. I'm pissed at myself for not taking pictures to share. I might be going back for follow up radon testing. If so, I take some pictures. Quote Link to comment Share on other sites More sharing options...
gtblum Posted June 12, 2016 Report Share Posted June 12, 2016 Probably the light or something, but from here it almost looks like the top is oak or ash. The bottom is definitely pine. Am I seeing it right? Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted June 12, 2016 Author Report Share Posted June 12, 2016 Probably the light or something, but from here it almost looks like the top is oak or ash. The bottom is definitely pine. Am I seeing it right? It may be a combination of species. I'll check that out further if I go back. If the top is hardwood and the bottom is pine, I'm sure I'll be able to probe and tell the difference in hardness. Quote Link to comment Share on other sites More sharing options...
mjr6550 Posted June 13, 2016 Report Share Posted June 13, 2016 Top and bottom both look like pine (probably SYP). I have probably seen this floor construction somewhere in the past, but cannot recall. It is common for roof framing in old mill buildings, etc. How old is the building? Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted June 13, 2016 Author Report Share Posted June 13, 2016 How old is the building? 1977 Quote Link to comment Share on other sites More sharing options...
ghentjr Posted June 14, 2016 Report Share Posted June 14, 2016 How old is the building? 1977 As I suggested earlier the flooring system you photographed was common in a prefab called a "Deck House". Check out some 1977 styles to see if they are similar to what you inspected. http://www.ncmodernist.org/deck.htm http://moderncapitaldc.com/2008/10/29/u ... -for-830k/ Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted June 16, 2016 Author Report Share Posted June 16, 2016 How old is the building? 1977 As I suggested earlier the flooring system you photographed was common in a prefab called a "Deck House". Check out some 1977 styles to see if they are similar to what you inspected. http://www.ncmodernist.org/deck.htm http://moderncapitaldc.com/2008/10/29/u ... -for-830k/ Interesting pictures. Thanks for posting the link. Many of the exposed beam interior features were similar but I did not see anything strikingly similar with regard to exterior shape or design. The one that I inspected had been modified and added to, at least once for sure and probably more. A large bump out for a kitchen and second floor bedroom was added. And I believe the lofty vaulted ceiling was modified to be utilized as another sleeping area. Quote Link to comment Share on other sites More sharing options...
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