I have a structure that supports an entire upper floor. Two lengthwise 195x45 beams are nailed together on 4 old standing beams. I now want to increase the strength and make it all safer. Which of the options is best:
1. Two lag screws 12x120 in from each side (I did a test. See picture)
2. Place a heavy carriage bolt through the entire structure
3. Notch one 195x45 into the standing beam and fasten with wood screws or carriage bolt
The purpose, as mentioned, is to ensure that safety is improved so the upper floor is supported as securely as possible and can withstand the load.
Any thoughts?
1. Two lag screws 12x120 in from each side (I did a test. See picture)
2. Place a heavy carriage bolt through the entire structure
3. Notch one 195x45 into the standing beam and fasten with wood screws or carriage bolt
The purpose, as mentioned, is to ensure that safety is improved so the upper floor is supported as securely as possible and can withstand the load.
Any thoughts?
Mats-S
Construction veteran
· Sollentuna
· 3 619 posts
Mats-S
Construction veteran
- Sollentuna
- 3,619 posts
Image 3 and 6, an additional vertical "post" under the beam, attached to the original post, is the strongest option. Attach with plenty of construction adhesive like PL 200 against the original post and several screws to ensure it's tight when the adhesive dries.
Thank you Mats 👍
There are 4 standing old beams that I need to attach the long/carrying 195s to.
Is it enough with standing extra posts on two of them? That is, the ones that will be built in at the far end of the room. I would prefer to avoid the posts in the middle-standing beams, as they will be visible in the room.
See pictures
