working out the right size steels ??

[scaffers]

hi all

i sent my plans to a steel stockest to quote me for my steels for my project. now i want to order them the steel stockest has come back and asked me to measure the walls being taken down and give him the steel size needed ?

i asked isnt the drawing enought but was told nope as nearly always wrong.

can i ask what you deduct from the wall measurement to get the lenghts of steel needed ?

2 steels meet in the middle of 1 steel to form a capital T so i know one cant run the full length as it notches into the other

any clues pls

 

[noseall]

The drawing is a guide. The engineers calc's should give you a bearing/padstone size as well as connection details.
The rest is up to you (or your builder) and your tape measure. Surely you can measure your own walls?

 

[garyo]

I did a T-steel on our extension last year. Even though I was on site with a laser measure I added 50mm to all three ends of the steel to give me some wiggle room, and on the basis that two of the three ends would be in a cavity anyway so no big deal.

 

[garyo]

give him the steel size needed

Has your engineer given you something that looks like 203 x 102 x 23KG... that will be the steel size, so you then need the lengths and the position of the connection point.

 

[^woody^]

Post the drawing. I've not got a scooby what's going on.

 

[John D v2.0]

I did a T-steel on our extension last year. Even though I was on site with a laser measure I added 50mm to all three ends of the steel to give me some wiggle room, and on the basis that two of the three ends would be in a cavity anyway so no big deal.

You don't want steel in a cavity really, you want insulation. You can always cut the ends off so that you can then insulate though.

 

[cdbe]

Having bought a few of the steels for my extension both from the "mismeasure corner" of my local steel place and some miffed builders on eBay I would suggest you measure once, measure twice and a few more times to be sure! One seller was brave enough to admit they'd only measured the gap between the walls!

 

[tony1851]

If a length of steel is a few inches short, it's no big deal to get a couple of short lengths of angle, or a channel section, and bolt them to the web to get sufficient length.
Had to do that a few times for builders who forgot to allow for bearings.

 

[Ian H]

One seller was brave enough to admit they'd only measured the gap between the walls!

I did that with 2 steels