This Dynamo routine look for automate a 2D array to placing sprinklers and modeling pipes, based on CAD linked file. Due to the imposibility to compute complex arrays with the MEPover package Nodes and to simplify the graph, the custom Python nodes development was undertaken. One of the complex situation that it was found, was the problem to find the nearest connector to a given point in a 2D array. Below it can be seen the python node to approach that situation. Below right it can be seen the node to create Tees in a 2D Array.