Douglas Fir |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: October-14-2017 at 8:53pm |
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If anyone is planning a stringer job in the near future, lives east of the Rockies and plans on using doug fir, I suggest going shopping now.. Today at work I just got the word that due to the fires out west, the doug fir will be very hard to come by in a couple months. HD distribution centers in the Midwest have already started shipping inventory west.
Also of interest is the HD Rhinelander store is very low on drywall. Today we were down to about 15% of what we normally carry in the store. Distribution has been sending it south due to the flooding! I'd say plywood and LVL will be next. Supply can not keep up with the demand. |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Maybe it's about time people quite building houses out of sticks and crushing berries to color them ...........
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geecee
Senior Member Joined: September-06-2013 Location: South Africa Status: Offline Points: 206 |
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speaking of doug fir, what alternatives are there other than coosa ?
I pulled the floor this weekend and its not pretty, will patch it for this season seeing as though we are heading into summer but next year I think its stringer time |
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1983 Ski Nautique '2001'
-Chev 350 Mercruiser -Custom Wake Tower -Custom Interior |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Is LVL (laminated veneer lumber) or a equal available in SA? Here, it's used for beams and headers in wood frame construction.
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geecee
Senior Member Joined: September-06-2013 Location: South Africa Status: Offline Points: 206 |
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A quick google search did find one supplier of LVL in the country |
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1983 Ski Nautique '2001'
-Chev 350 Mercruiser -Custom Wake Tower -Custom Interior |
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Riley
Grand Poobah Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7948 |
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How can that stuff be any good for lagging the engine down due to the grain?
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Bruce, Take a look at the grain direction on LVL and compare that to the grain direction of solid lumber. The grain runs in the same direction. Then, add the resorcinol to the LVL and you have a material that holds threads better than a sold piece of lumber!! It seems to me that you have never worked with LVL! |
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Riley
Grand Poobah Joined: January-19-2004 Location: Portland, ME Status: Offline Points: 7948 |
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I have never worked with LVL.. The grain looks similar to laminated plywood wood.
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Bruce, LVL is made up with layers of veneer just like plywood sheets but, unlike plywood where the veneers alternate grain direction, all the veneer grain direction in a LVL runs the same direction. |
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SWANY
Senior Member Joined: August-12-2014 Location: batavia Status: Offline Points: 384 |
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Then, add the resorcinol to the LVL and you have a material that holds threads better than a sold piece of lumber!!
[/QUOTE] X2. Lag screws hold better in a LVL better than a solid that's more septible to splitting. I would trust it 10x over |
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baitkiller
Platinum Member Joined: October-11-2011 Location: SW Florida Status: Offline Points: 1693 |
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Not too far off topic but when I have done stringer jobs for inboard engines using timber or plywood for stringers I have always capped the engine bearers with 2 inches of white oak when laminating it together. Its easy to find and cheap, wont rot and holds fasteners like nobodies business. Typical inboard stringers would be two layers of 1" marine ply laminated together with a sammich layer of 1708 and epoxy then capped in oak for engine bearers and rudder tables. I have built boats like this for a long time with no issue. A small ski boat though I would use timber or composite.
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Jesus was a bare-footer.............
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Then when using it for stringers, the suggested CPES treatment further enhances thread holding especially if you treat the lag pilot holes. Also, if you use traditional lags over the newer structural rated self drilling fasteners, drilling proper sized pilot and clearance (for the shank) holes is important. |
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SWANY
Senior Member Joined: August-12-2014 Location: batavia Status: Offline Points: 384 |
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Yes, I failed to say pre drill. I don't think it's been mentioned but there is a significant weight difference also, LVL's will weigh more. although I doubt you'd notice it when the projects all done.
Quite honestly let's be honest when was the last time somebody came on this forum and said they ripped an engine right out of the boat from the torq because the lag screws didn't hold. And the thousands of rotten stringers out there with boats still in use. Are we over engineering things? Definitely better than orginal |
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Mojo
Grand Poobah Joined: December-06-2006 Location: United States Status: Offline Points: 3104 |
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+1 |
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05' SV211 TE
73' Martinique had:96' SNOB had:76' Nautique had 77 Tique |
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