Please provide dimensions and measurements for the drawing. Purlins are possible but will have to be more of a freestanding structure with to bent assemblies. As stated before, I don't condone tie ins that get bolted to walls as an afterthought in design, it is not good craftsmanship IMO. and can lead to other challenges down the road. You can put in for masonry plinths of different types, just choose one. Below are some simple examples of what can be done.
