Friday, 1 September 2017

Wood: The Pergola (Part 3)


The Raising

64 hours. The length of time in laboured hours it took Chad to cut and raise the pergola. Here's how he raised this beauty.



Chad braced the first raised bent with 2X4 lumber and clamps to stop the frame from twisting while being lifted and to protect the joinery.


Once the first bent was up and secure the braces come off and the second bent gets raised into the pre-measured and fastened metal collars.


An initial trellis rafter was put up and secured in place to provide stability for the two raised bents while the rest of the pergola gets raised.


Next steps involve joining the tie beam that bridges the parallel bents and the knee braces that support these connections. This step also happens on the other side of the pergola once other pieces are in place.


A second lateral beam is spliced together with the initial raised bent and joined with an end post and knee brace. This is done on both ends of the initial bents.


Every connection is held together with oak pegs that get hammered into the structure with the very necessary wooden 'caveman' mallet. A must have in every timberframer's toolbox.


The finishing touches include putting up the trellis rafters, fastening wood trim around the metal collars and putting in some mean timber stairs. You can also see in these pictures how the arch over the stairs came out that Chad cut with a chainsaw. You can see how the joinery was cut and the work involved before the raising here and here.



Happy Building.
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