Agricultural Greenhouses: Methodology and Construction
Stage 8 – Building the greenhouse wooden roof frame
In this stage begins the construction of the wooden frame that will hold the greenhouse roof film glazing (Photo 93). In this stage we measure, mark and cut the lumber (Photos 94, 95, 96, 97 and 98) that will be used to make the greenhouse wooden roof frame.
Mark out the timber with a pencil and a triangle forming a 45-degree angle (Photos 99 and 100). The marks and diagonal cuts (Photos 101, 102, 103 and 104) indicate the structure’s upper joint. The structure of the greenhouse wooden roof structure begins (Photo 105 and 106). Photos 107 and 108 show the marking out of the wooden structure where the upper wooden structure will be laid. After marking and checking for the right width, proceed with cutting the joint (Photo 109), nailing the wood to the structure’s wider base (Photo 110 and 111), after cutting the joint (Photo 112), as well as the diagonal cuts (Photos 113 and 114). View the position of the wooden structure from below the notch (Photo 115), which can now be nailed to the base of the larger structure (Photos 116 and 117). Now we can view the shape of the greenhouse wooden roof structure (Photo 118). Cuts are made to align the nailed board with the main structure (Photos 119 and 120). To facilitate attaching the wooden structure to the columns, holes are drilled in the extremities (Photos 121, 122, 123 and 124).
Observations: Visualize the measures in order to better understand this step (Figure 2, which is below).