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Hi Guys I have a 10m long wall with a height of 5m and piers spaced 4m apart. My question is, when designing the wall, should it be designed for the full length of 10m or should each panel be designed separately, assuming a 4m panel with fixed boundary conditions on both sides and pinned from...

Any more feedback would be greatly appreciated, guys.

I hope these sketches help you understand things better.

Yes it is external floor and I considered service class 3 in my design. I am not convinced with screws, it just about working using bolts. I only managed to work it out using M16 bolts in 2 rows, so that is the only way it will work. However, I am not sure how the contractor is going to close...

This connection is a little awkward. I should also check the lateral load carrying and splitting capacity. Connecting a 60 x 200mm trimmer with M16 at 600mm spacing to existing 2x38x225 joists will fail in the shear plane. I am not sure using M20 is a good idea. Has anyone came across these...

Thank you phamEng, I spoke with Simpson earlier and they would recommend SDW type structural screws. https://www.strongtie.co.uk/en-UK/products/structural-wood-screw-sdw#2 In their link I can only see Characteristic tensile capacity 21.4kN but not sure about the shear capacity? I am not...

In your opinion would you use Bolts e.g M16 at 600mm spacing, rather than screws? The joists are going to be fixed on joist hangers which are supported by the trimmer. The bolts should be connected to existing trimmers going through the sheathing at 600mm spacing. Based on my calcs, we have...

I want to install a timber trimmer flush with the face of an existing external timber wall. Should I size the trimmer based on the spacing 900mm if I fix the trimmer at 900mm spacing? for example, as continuous beam 900mm each span? Would you recommend using screws or bolts for fixing? If the...

I was wondering if it is possible to conceal the steel beams between the floor joists? So it is not visible.

I'll have to see if the lower beam can bear on the internal wall, or if the wall needs to be rebuilt to support the load. These lines are only indicative; simply using two 152mm beams will most likely be sufficient.

Hi Guys, I'm considering how to support the removal of the chimney on the ground floor while also providing a steel beam to support the stack above. I ran preliminary calculations with the 2x beams running parallel to the party wall underneath the chimney, but I am not satisfied with this...

I think this video explains some good points https://youtu.be/rUjRI5Hn4kw

Thank you steveh49

The deflection is increased a little bit

Yes I added support because there is another cantilever attached. So the deflection is right 100%.

I manged to bring the deflection to the acceptable limit. My question is do I need to design these connections based on these axial forces.

Thank you BARetired I followed your suggestion and I am getting a deflection of 25.3mm service load. To me it is a bit high. Can you explain further about identifying a virtual member please.

Is it possible to glue the beams and use bolted side plates? Thank you

BA Retired! If I wasn't aware of an issue I would not resort to this forum. So I am here seeking HELP! I am fully aware about the tension at plate No 2. As I mentioned in my first post this is uncommon to me. Please if you are not willing to help and be polite then please do not comment...

I am also concerned about the T junction connection as I got high axial force 160kN in there. I did some check as you see below, but I am not sure if the connection is designed using this approach. I used M16 grade 8.8 and plate thickness 12mm. Using bolt size 16mm Bolt double shear...