Stage 9 – Attaching the greenhouse wooden structure to the PVC columns
Stage 9 is when the wooden structure will be attached to the 4-inch PVC columns. This process shows the wooden roof structure supporting the arch that will be covered with the plastic film in the next stage. To facilitate handling, place the wooden structure inside the greenhouse (Photo 125). To facilitate handling of each structure to be laid on the 4-inch PVC columns, it is advisable that a long stick (Photo 126) be used to lift the trussed rafter into position (Photos 127 and 128) and making it easier to insert the screws through the column and the wood. The 20 cm-long, round-headed screws are fastened with washers and nuts (Photos 129 and 130).
In photos 131, 132, 133 and 134 we can see the wooden structure that will support the 2-inch PVC arches. After laying the wooden structure that will support the 2-inch PVC arches, proceed with the installation of the upper purlin around the entire greenhouse, which is designed to reinforce the wooden roof structure (Photos 135 and 136). This side purlin will also be used to fasten the plastic film on the wooden side wall. A 50 cm-long piece of wood joins the purlin parts from inside (Photo 137), since the outer part (Photo 138) is to remain free to receive the piece of lumber around which the plastic film that will cover the greenhouse roof will be rolled.