Bridging a gap between two joists

[Glastoun]

We're removing a chimney breast, and have to extend a joist that is resting on one side of the ground floor breast. The gap is about 1.5m, so was going to get hold of a 2.5-3.0m joist, line it up next to the existing one overlapping by 0.5-0.75m at each end, drill through both joists and bolt together.

Is it as simple as that? I'm comfortable enough with a drill and bolts so I'm happy I could get them in place and attached, but if it's not 100% tight and in line am I going to regret not paying someone to do it? Had a guy round for a quote but not had the price back yet, and I'm looking to get it done before the start of next week.

Thanks for any help,

 

[foxhole]

Stronger to connect timber either side of short joist across it's end and then infill with short timbers.

 

[Glastoun]

Sorry don't understand that - which timber is parallel to the joist, and which is perpendicular, if any?

 

[foxhole]

Perhaps you could post a pic, would be easier to explain.
A distant shot of timber around fireplace.

 

[Glastoun]

Very poor sketch uploaded, can upload a photo tonight if necessary. This is what I meant by bolting another joist to the sides of the existing two.

Do you mean put a joist like this on both sides, and then fill the hole in the middle with more joist?

View media item 80764

 

[foxhole]

View media item 80767More like this, timber secured to wall where chimney removed [top line of pic] then new timber [dotted line] secured to existing and wall mounted timber.

 

[Glastoun]

Okay got it. Only thing that makes me think no is that the whole ground floor of the chimney is being removed, including the back wall, so the timber would be secured right at the bottom of the masonry, and then the builders would have to support it and fit the steel beam under it. So I think this method is beyond my skills.

I could do the bolt-an-extra-length-of-joist-on - if it was outdoor decking or something like that I'd be confident but I'd hate to end up with a wonky floor and wished I'd just paid someone to do it, if not having to pay them to correct it.

Have another joiner to speak to tomorrow, will see what he says,

Cheers,