Hello!
I'm working on a garage sized 5.5m*6m. The span between the walls is 5.5m, which I think is quite a long span. I plan to have a small guest cabin on the upper floor, so to make it work well, I thought to order the trusses.
I have received two quotes from the same supplier. One quote includes 5 Kerto beams 45*260mm as floor joists and 6 trusses with the same type of beam as tie beam. Everything is placed with a center-to-center distance of 600mm, as the following picture approximately shows:
http://sqflqq.blu.livefilestore.com...iC1nShtjpJkHSgVFw7FSXAw/vaggplan_takstol.html
These are seamless beams, which sounds good.
The other quote consists of 10 floor joists placed with a center-to-center distance of 300mm, and 6 trusses. The difference is that all beams in this quote are made of K24 45x220 (correct me if I’m wrong in saying that K24 is glued laminated timber). But the downside is that these beams are joined with nail plates. The tie beams are joined in two places, and the floor joists in one place.
My question now is whether my feeling that these joints constitute a noticeable deterioration is correct, as I intend to practically live on the upper floor. Or is my feeling unfounded?
The price with Kerto is a bit higher, but the delivery time is significantly longer. Another advantage of the K24s is that I gain 4cm extra in height on the upper floor. It might sound little, but for me, every centimeter is interesting. That gives me 198cm to the ridge. The reason is that the municipality has set a maximum height that cannot be exceeded.
Thank you very much in advance.
Fredrik
I'm working on a garage sized 5.5m*6m. The span between the walls is 5.5m, which I think is quite a long span. I plan to have a small guest cabin on the upper floor, so to make it work well, I thought to order the trusses.
I have received two quotes from the same supplier. One quote includes 5 Kerto beams 45*260mm as floor joists and 6 trusses with the same type of beam as tie beam. Everything is placed with a center-to-center distance of 600mm, as the following picture approximately shows:
http://sqflqq.blu.livefilestore.com...iC1nShtjpJkHSgVFw7FSXAw/vaggplan_takstol.html
These are seamless beams, which sounds good.
The other quote consists of 10 floor joists placed with a center-to-center distance of 300mm, and 6 trusses. The difference is that all beams in this quote are made of K24 45x220 (correct me if I’m wrong in saying that K24 is glued laminated timber). But the downside is that these beams are joined with nail plates. The tie beams are joined in two places, and the floor joists in one place.
My question now is whether my feeling that these joints constitute a noticeable deterioration is correct, as I intend to practically live on the upper floor. Or is my feeling unfounded?
The price with Kerto is a bit higher, but the delivery time is significantly longer. Another advantage of the K24s is that I gain 4cm extra in height on the upper floor. It might sound little, but for me, every centimeter is interesting. That gives me 198cm to the ridge. The reason is that the municipality has set a maximum height that cannot be exceeded.
Thank you very much in advance.
Fredrik
K24 is structural timber. It is solid wood, not laminated timber.
I assume that the person who gave the quote has calculated the load-bearing capacity of all the beams, so he knows they are sufficient. And you mentioned that you plan to live on the upper floor?
5.5 meters should be obtainable. It doesn’t need to be joined exactly in the middle. For example, you can join 4.8 + 0.7 and alternate the joints in different directions.
I assume that the person who gave the quote has calculated the load-bearing capacity of all the beams, so he knows they are sufficient. And you mentioned that you plan to live on the upper floor?
5.5 meters should be obtainable. It doesn’t need to be joined exactly in the middle. For example, you can join 4.8 + 0.7 and alternate the joints in different directions.
Hi!
Thanks for the reply!
Yes, those I received the quotation from should have all the information.
But do you dare to guess how the joint is executed? My gut feeling says that just using nail plates on each side of the joint will be too weak.
I hope it is standard to have a gluing applied in a zigzag joint in addition to the nail plates.
I'll obviously check with the supplier, but it would be great if you have any comments on this.
Best regards,
Fredrik
Thanks for the reply!
Yes, those I received the quotation from should have all the information.
But do you dare to guess how the joint is executed? My gut feeling says that just using nail plates on each side of the joint will be too weak.
I hope it is standard to have a gluing applied in a zigzag joint in addition to the nail plates.
I'll obviously check with the supplier, but it would be great if you have any comments on this.
Best regards,
Fredrik
A truss builder likely has no equipment for figerskarvning.
A fingerskarv is as strong as the rest of the material, so if he had meant that the studs were fingerskarvade, he wouldn't even have needed to comment on this in the quote.
A fingerskarv is as strong as the rest of the material, so if he had meant that the studs were fingerskarvade, he wouldn't even have needed to comment on this in the quote.
I have ordered roof trusses for my garage now, these have a span of 7180mm.
The lower chord will consist of double 45x220, the 'reinforcement' will be nailed in place.
They are joined with nail plates. Will be placed at c/c60.
Loft/guest room/storage (whatever it will become when the garage is finished) will be on the upper floor.
It will work according to the manufacturer.
The lower chord will consist of double 45x220, the 'reinforcement' will be nailed in place.
They are joined with nail plates. Will be placed at c/c60.
Loft/guest room/storage (whatever it will become when the garage is finished) will be on the upper floor.
It will work according to the manufacturer.