grand designs

[engineerone]

after dinner tonight for the first time in ages, with nothing better on the tele i watched grand designs to night. very interesting.

what was most interesting though was the use of engineered beams in the roof works. some of those were waaaayyyyy long.
sadly i can't remember the brand name.

not too sure about the house but some of the construction details were pretty interesting, including recycled newspapers
for some of the blow in insulation.

paul

[jfc]

Paralam can go for as long as you like , a bit like me with the right woman ;D

[paulchapman]

They had one on a few evenings ago where they were also talking about engineered beams and sheet material where you need large expanses without pillars (like airports). I wasn't paying very close attention, but I couldn't quite see what the difference was between some of the stuff and plywood - but I suppose there must have been because plywood couldn't have been used for the expanses they were talking about. Must pay more attention next time........ ;D

Cheers

Paul

[engineerone]

so obviously so far you have not met the right woman jason ;D ;D
otherwise you would not need such a tv unit

parallam must remember that name.

i also liked the larch outer surfaces.

paul

[paulchapman]

This is the stuff, Paul www.channel4.com/4homes/ontv/grand-designs/houses/M/Midlothian-Gallery_image5.html

Must be strong - that bloke and his wife weighed about a ton

Cheers

Paul

[engineerone]

yes paul, they were definately a good advert for food lovers

thanks for the link
paul

[gazza]

paulchapman said:

Must be strong - that bloke and his wife weighed about a ton

Cheers

Paul

;D ;D ;D RATFLMAO
Cheers,
Gazza.

[gazza]

engineerone said:

yes paul, they were definately a good advert for food lovers

paul

;D ;D ;D ;D
Cheers,
Gazza
Nothin like a good ol laugh !!!

[wizer]

whilst we are on the subject, would those engineered I-Beams span 3.3m and take 150kg weight in the middle?

More's to the point, can I make my own I-Beam in this way?

[9fingers]

Nothing to stop you making I beams WiZer but if you want them to be accepted by a BCO then you will have to provide calculations to support (!!) their construction.

For non BCO jobs you could build a beam as an experiment and see how much it flexes. The max deflection for a wooden beam used to be 1/360 of it's length. Not sure if this is still the rule cos it is a long time since I had to build something 'properly'!!
The stiffness of a solid beam varies as the cube of the depth (all other things being the same) so it your first attempt is too limp (no sniggering at the back!) you can estimate how much deeper it needs to be assuming that I beams follow a similar rule.

Bob

[wizer]

Cheers Bob, this is a no BCO job, it's needed to hold just one thing in the air. I'm going to have an experiment.

[modernist]

I've just used these (Silentfloor version) over my workshop in a 2 storey extension with a 7.5m span. These were all fully calc'd for the Building regs but they do have a bit more bounce than I expected. I don't have any concerns about the strength. I have noticed a few heads of p'board nails popping the board finish off in the workshop but that may just be a result of nailing the upper flooring. Time will tell.

Strangely they were no more expensive than solid for the floor but much more expensive for the pitched roof. (So I stiuck with solid)

[jfc]

This was held up with box beams , two rows of 100mm x 50mm clad with two sheets of ply nailed at 50mm c/c . Agree that you need to have the calcs done by someone that knows sod all but can blag the other people that know sod all ;D I modified the beams to be even stronger and the people that know sod all passed them with out noticing that i had changed it

[dom]

Nice job Jason, like the radiator.

[modernist]

I got the spring in the floor without actually putting one under ;D