Silly question? Cls timber framing.

[Hsmith192]

Hi All,

I was wondering what type of screw I should be using for 3x2 (63mm x 38mm). the wooden studs are 63mm CLS's and I was planning to use 70mm screws? Are these too small.

Also what size screw do I use to attach plywood onto the timber?

I am planning on French cleating so it will be a load bearing wall.


Thanks in advance

 

[Ross Buchanan]

80mm galvanised ring-shank nails.
Don't screw the stud wall together- if it goes right, it takes too long, but likely you will get splits and slack joints unless you drill clearance and pilot holes for every screw.

As to attaching your ply to the studwork, ROT is 2 1/2 times the thickness of the ply-so dependent on the ply chosen.

 

[Hsmith192]

80mm galvanised ring-shank nails.
Don't screw the stud wall together- if it goes right, it takes too long, but likely you will get splits and slack joints unless you drill clearance and pilot holes for every screw.

As to attaching your ply to the studwork, ROT is 2 1/2 times the thickness of the ply-so dependent on the ply chosen.

If I don’t have a nail gun can screws be used for framing the CLS?

 

[Ross Buchanan]

Hammer?
You can use screws if you like, its just slow and expensive to no actual advantage

 

[Jameshow]

I'd use 5x80mm using a 4mm pilot drill through the header and outer will make it easier to screw in. Most often screws have a drill tip to make things easier.

 

[trvlr]

erm... CLS = ???

 

[Hsmith192]

erm... CLS = ???

3x2 softwood lengths. I believe it stands for Canadian lumbar standard

 

[heimlaga]

I avoid screws in framing. Modern woodscrews are so hard and brittle that ever the tiniest bit of deflection or movement may cause the screws to snap. Often with disastrous results. They ara also almost impossible to get out of the wood when something has to be repaired. There are only three methods for taking apart a screwed structure after 20 years when the screws have got stuck. Fire or dynamite or excavator.
I nail almost everything load bearing with hammer and square galvanized wire nails.
Though sometimes I may be cheating with a nail gun. Nail guns use round nails which don't work as well together with the wood and therefore have less shear strenght.