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Any help?

Hello, The existing timber roof beam in 18/20 cm - the span is 6 m. The existing beam will be reinforced with additional timber beam beneath and steel channels as shown in the attached image. Question: can reinforcing elements start/end at the face of the support (drawing A) or it should...

any help?

Hello, how would you calculate shear force between panels? Is it OK to use horizontal force (seismic force or wind) on top of the wall (shear force of the single wall) and make a truss and tie model - the compression force in vertical element (joint between panels) is equal as shear force...

Timber roof - main frames (arranged at 6,5 m) - glulam beams b/h = 200/1000 mm supported on RC walls. On top of glulam beams are timber beams b/h = 100/240 mm arranged at 1m. Can this beams be considered/act as lateral supports for glulam beam buckling verification? Thank you for help.

Thank you for reply. That's what I have thought. The thing is I have seen that kind of connections for cantilever parts of structure (steel roofs, fire stairs). I guess it works as a moment connection if loads are small enough.

Greetings, Bolted connections: It's clear that connection 2 is a moment connection. I'm wondering if connection 1 can be also considered as a moment connection since both bolts are bellow beam flanges?

Thank you for reply but I'm not really sure how to check it for shear - can the shear of short corbel be checked by compression strut? Or should I use cross section of b/h = 320 x 160 mm? I think shear failure (2) in more likely to happen than (1)

Greetings! I am dealing with a steel channel that is placed at the edge of concrete slab. Since there is a 160 mm thick slab bellow a channel Im wondering how to design/calculate this for shear forces? I was thinking to use the short corbel model (strut and tie model), but Im not sure. I dont...

Hello Exisitng residental building has strip foundation. New part of building will have foundation slab. I'm wondering what is the best way to connect both foundations? New structure will be connected to existing on all levels: founations, slabs, roof... thank you for your reply

@Kootk - thats what I had in mind when looking at it. I have the same dillema about upper slab. @Menai - great article! tnx Thanks for help everyone.

Hello, I'd like to ask about concrete stairs. Is it possible to make it work without a column as shown bellow? All walls are masonry walls so no cantilever action there.

Existing timber beam doesnt have sufficient shear capacity. What is the best way to reinforce this? I was thinking about steel plate + epoxy glue. As far as I understand shear force will be divided based on stiffness of both elements (timber/steel). Connection between steel plate and timber...

Thank you for feedback. The beam at the end of cantilever is not the part of a bearing structure - its span is large (10 m) and it cant be supported because of geometry and architect demands. I should make this more clear in my OP. @Kootk - to me this detail is more like (1) which is a no...

Hello Residental building, the interior RC slab in not at the same level as the cantilever slab. The cantilever part is non walking surface - only self and permanent load + snow load + wind load. Can this be reinforced properly so it could work even tho slabs are not at the same level? Dont...

I'm doing this because attic space wont be unused any longer plus screed on existing slabs,... Therefore load on first existing RC slab will be increased and my calculations says that 140 mm thick slab is not sufficient. This is the plane view:

Tnx for help. But saw cuts have to be done on both sides of existing bearing wall since it cant be made in the middle?

Greeting, I'm dealing with an existing residental building with masonry walls and RC slabs. I figured there is a bearing wall in the middle of the slab span - load from this wall acting on a slab is pretty large. Slab is only 140 mm thick and is not sufficient for current standards. What can...

yup, there's no faith that the ceiling is strong enough to support the weight of the concrete slab

The new slab will be supported on the bearing walls and steel beams. I was thinking about something like that. Thank you for reply.