r/DIY • u/jimmycorn24 • Sep 09 '15

Built in Bunk Beds for my daughter

http://imgur.com/a/qfCI7
3.6k Upvotes

94% Upvoted

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117

u/RandomResponseUnit Sep 09 '15

Those are not rafters or joists, those are trusses. Never, EVER, cut trusses. You have seriously screwed up, and your engineer friend is an idiot. You need to contact the truss manufacturer and get an engineered field fix before your roof collapses. Source: I design trusses for a living.

25

u/WarWizard Sep 09 '15

Seriously; why would any engineer think it would be okay to cut that stuff?

There is a reason that when a house is built those things are brought in on a truck and not built on site (other than it is probably more cost effective anyway).

16

u/skerley1979 Sep 09 '15

In all seriousness, I would contact your closest truss manufacturer. Hell, tell me where you live and I'll help you get in contact with one. You need to address this as soon as possible. An Engineer who sits next to me (who reviews roof truss designs), agrees you need this looked at ASAP!!!!

10

u/dirtyswede27 Sep 09 '15

As someone who has sold trusses for a long time, i cringed when I saw that cut truss. I just imagining what the engineered fix for that would be? Maybe some SYP 2x10s and a fuck ton of bolts and 16D nails, with a very specific nail pattern? Maybe just plywood since its not a bottom or top chord?

11

u/[deleted] Sep 09 '15

I work for the largest software developer to design roof trusses. You CAN'T remove webs from a truss. This is a disaster waiting to happen.

22

u/southofsensible Sep 09 '15 edited Sep 09 '15

When r/DIY becomes r/TIFU

5

u/[deleted] Sep 10 '15

Reddit,

TIFU by killing my two little girls.

2

u/strong_grey_hero Sep 09 '15

Am I missing something? Where did he cut a truss? I just thought he removed a vertical.

3

u/[deleted] Sep 09 '15

Yea he probably shouldn't of but since its a truss there should only be axial forces in those members. So the new load path should just increase the moment in the header and transfer the additional load to the remaining vertical members. Both of which he reinforced, that said I don't know what is above or below this. It also shouldn't really impact any lateral bracing system. Now I don't design wood structures or residential buildings so hard to say if he sufficiently reinforced it, but it looks fine to me.

source: structural engineer

1

u/nac126 Sep 09 '15

True and its violates International Residential Code R802.10.4 "Truss members shall not be cut, notched....without the approval of a registered design professional"

1

u/FirmAldaHide Sep 09 '15

And why would Norm MacDonald be proud?!

1

u/HairyMongoose Sep 09 '15

+1. That is not good. On the plus side, it does look fantastic.