Purlin wall

[Mastercraftsman]

Hi guys I'm doing a DIY loft conversion , full plans, all passed and have installed some steels to hang the new floor joists from and take some of the weight from the removal of the old purlins via a newly built supporting purlin wall.

The existing rafters are 4x2, the purlin wall I'm about to built will be 4x2 also, I'm a little confused how I attach the uprights of the new purlin wall onto the rafters? Can I just bolt them together using dog tooth connectors and coach bolts, or should I be making a wall plate at the top of the new wall and birdsmouthing the rafters onto this ?

Any help would be great! Cheers

 

[pinenot]

Attach a tilting piece to the underside of the rafters, with sprocket (dog tooth) washers, gives you a fast horizontal fixing for the top runner of your frames preventing any slippage. Ping a chalk line across the bottom of the rafters from plum lines marked from the intended floor to ensure a straight top runner (working upside down can be confusing) This way provides a sure but simple way of attachment in my experience...pinenot