How to make a Pergola – Box Type

The Posts, beams and rafters.

The bottoms of the posts are bolted to the deckA flat floored roofless area adjoining a house. Timber deck: An outside floor structure comprising of posts, bearers, joists and decking boards. joists or the deck boundary joistOne of a series of parallel members used to support the floor. Part of the framing that provides the structure for a floor. and also concreted into the ground. The ledger plateThe top or bottom horizontal framing member of the wall. (also called stringer) is bolted to the house wall above the doorA horizontal framing member above the door/window opening., The top of the posts are checked out to accommodate the beamA supporting member. and the rafters are nailed in place between the ledger and the beam.

A square hole (postsee PILE size) is cut in the decking. The posts are placed through the hole in the decking and into a hole dug in the ground. The bottoms of the posts are bolted to the deck joists or the deck boundary joist and also concreted into the ground. (See drawing below).

The roof structure

The ledger plate (also called stringer) is bolted to the house wall above the door with 12mm (1/2″) galvanizedCovered with a protective coating of zinc. screws every 900mm (36″) apart. There is (in most cases) a lintelHeader; A beam placed perpendicular to wall studs above doors, windows or other openings to carry the weight of structural loads. (beam) above all doors, thus ensuring solid fixing. The height of the ledger plate determines the overall roof structure height.

The required heights of the top of the posts are obtained by levelling across from the top of the ledger plate .

The top of the posts are rebated/checked out to accommodate the pergolaA structure with open wood-framed roofs, often latticed and supported by regularly spaced posts or columns, and covered by climbing plants such as vines or roses, shading a walk or passageway. Pergolas are distinguished from “arbors,” which are less extensive in extent and structure. beam. Refer to image below.

The beam is bolted in place. see the plans for dimensionsAny of the three linear measurements, length, breadth and depth.

The rafters are nailed in place between the ledger and the beam. See the plans for dimensions