A lean to roof also called a shed roof slopes in one direction with rafters that rest against another structure at their high end and overhang support posts or an exterior wall at their low end.
Rafter ties for lean to roof.
Lean to rafters then connect to a ledger board against a wall of another shed or house.
Rafter ties or ceiling joists acting as rafter ties are required by code unless the house is designed so that the walls or a structural ridge beam carries the full load of the roof.
You can possibly remove them altogether of you include posts in the gable walls to support a structural ridge.
Simpson strong tie category roof truss and rafter connectors ties and straps for cold formed steel construction.
For pricing and availability.
If you are framing a cathedral ceiling there are a couple ways to deal with the need for rafter ties.
Simpson strong tie 6 in 18 gauge triple zinc steel rafter tie.
If your garage is 24 feet wide and has a 4 12 roof the new rafter ties can be placed no more than 16 inches up from the plate without additional engineering.
For pricing and availability.