Angle irons and similar vs screws?

[slacker]

Using angles for rafters is primarily practical because you get them at the right distance immediately. As a novice, I would never toenail a rafter just because they could easily be knocked sideways, and even the slightest deviation becomes a hassle to deal with.

I screwed my rafters (Outbuilding 12.5 sqm so nothing mega) from underneath into the wall plate. But still complemented with angle brackets...

 

[lillsnickare]

I have just placed angles on the wall plate for the upcoming trusses. There, it's probably not an option to toenail?

[image]

Since I got a nail gun, I have toenailed quite a bit; as an amateur, I find it easier than toenailing screws.

No, that's not the place to toenail them... it would be unfortunate to have a roof that blows away.

 

[Pettttter]

nah, it's not a good idea to use angle screws/nails there.. it would be unfortunate to have a roof that blows away.

Is there stronger pull/holding force just because you set angles? I understand that it's stronger against diagonal forces, but when it comes to holding in place, it's just the threads of the screws that hold, just like with angle screws?

 

[lillsnickare]

Is it stronger pull/holding-power just because you set angles? I understand that it is stronger against skew forces, but when it comes to holding, it's just the screws' threads that hold on, just like with angled screws?

They are a very complicated subject but, yes, you set angles to get a greater pulling power than an angled screw. For example, in roof trusses, there is a risk that the wood will crack, which would impair the bearing capacity and strength, making it much easier to calculate how much they can handle. But usually, it's not something you need to worry about and can often manage without it.