Triangulating Mesh

Hello 

Can  someone tell me how to triangulate this mesh into equilateral triangles to be able to build it? I have been reading about how to divided in circles (with a radius determinated) but I haven't achieved anything. I have started with GH a few weeks ago and I'm not skilled to resolve this problems yet. Does anyone know how to help me?

I attach a image of the mesh I want to triangulate. The purpose is to create a modular structure able to be built with 1 element. 

PD: Sorry for my english!

THANK YOU SO MUCH