Glulam beam how can you fasten to the floor without angle brackets?

[kladde]

need to offset a load-bearing wall and got from the engineer to attach the columns to the floor with angle plates. It will be ugly and visible since I planned to keep the wood's natural color. How can you solve it so it's not visible? The beam above is screwed with universal screws diagonally into the beams. But against the floor, that doesn't work.

 

[klaskarlsson]

You could screw a fastener into the floor and slide the beam onto it, then screw in from the top.

For example, some form of bolt/rebar or similar that you then drill a hole for in the beam. The idea is that the fastener in the floor should prevent sideways movement.
That way, the fastener becomes concealed.

 

[Jansson69]

I need to support a load-bearing wall and the engineer instructed to attach the pillars to the floor with angle plates. It will look ugly and visible as I planned to keep the wood's natural color. How can this be resolved so it isn't visible? The beam above is screwed with universal screws angled into the beams. But that approach doesn't work with the floor.

Can you drill in a plug in the middle that you also drill down into the floor...

 

[kladde]

Hmm, I need to investigate that. It must be a substantial plug then since the beams are 115x115

 

[kladde]

You could screw a bracket into the floor and slip the beam onto it and then screw it in at the top.

For example, some form of bolt/rebar or similar that you then drill a hole for in the beam. The idea is that the bracket in the floor should prevent sideways movement.
That way the bracket is hidden.

Thanks. That would be another option. Just wondering where to find one.

 

[Matti_75]

Buy a long concrete screw type 12-14 mm in diameter and 200mm long. Screw it down halfway and cut off the head. Drill a corresponding hole in the pillar and insert the post with plastic between the concrete and wood.

 

[Jansson69]

Hm, I must investigate this. It must be quite a plug, in that case the beams are 115x115

It could be threaded rod or similar, it doesn't need to be that long but just lock the post sideways at the bottom..

 

[Troberg]

It could be a threaded rod or similar, it doesn't need to be so long, just to lock the post laterally at the bottom.

Exactly. It's not about large forces, and it's unlikely to lift.

I would have used a couple of M10 stud bolts: https://www.biltema.se/bygg/vvs/ven...ehor/skruvstift-m10-x-100-mm-10-st-2000057966

On the other hand, I use them for everything, so what do I know...

 

[Jansson69]

Exactly. It's not about large forces, and it probably won't lift.

I would have used a couple of M10 screw studs: [link]

On the other hand, I use them for everything, so what do I know...

Yes, if there's a wooden joist underneath, they'll be great...

 

[kladde]

I just don't understand how the last half is supposed to be screwed in. If the screw is embedded in concrete, how do I screw it into the beam? It's lying against a wall.

 

[Jansson69]

I just don't understand how the last half should be screwed in. If the screw is embedded in concrete, how do I screw it into the beam? It rests against a wall

You don't screw it into the post; you just drill a hole in the post the same dimension as the metal rod, and when it's screwed into the floor, you slide the post on.

But if the post is against a wall, it's easier to screw the post directly into the wall with construction screws, for example..

 

[kladde]

The problem is just that there is a designer who has made a calculation and doesn't know if it will be accepted from a structural strength perspective. But writing it in the wall might work.

Thanks, everyone.

 

[Boxer63]

Slotted plate is a common way to solve problems to achieve a less visible fastening. It won't be completely invisible, but the designer has the ability to account for it. Here is an example, there are several variants
https://www.ergofast.se/produkter/wp-content/uploads/2021/11/F70-se-technical-data-sheet.pdf

 

[kladde]

I've been thinking about screwing it directly into the concrete wall instead. The column is 115x115. Which screw should be used for that? Is it still the one from Biltema
https://www.biltema.se/bygg/vvs/ven...ehor/skruvstift-m10-x-100-mm-10-st-2000057966

The builder wants to make it as simple as possible for himself. But I want it to look nice so no visible angle irons or ugly screw heads.

 

[klaskarlsson]

can you then screw it to the wall.
You can drill and countersink the mounting screw, and then, if you want, plug these holes so you don't see the screw heads.