A plank, a bastaing and a joist are all three of the materials used for large carpentry and house building work, and particularly for those relating to the construction of frames and floors. These are pieces of wood sawn into thick, rectangular sections with sharp edges that differ in size and weight.
A plank is a piece of wood carved in a thick plank most of the time from softwoods such as pine, fir, larch or spruce and sometimes hardwoods such as oak for example. The plank is shaped so as to obtain a rectangular piece of wood with flat surfaces. Its dimensions are always about the same: 75 x 200 mm, 75 x 225 mm or 100 x 225 mm.
The plank is used for major carpentry and construction work, mainly for those relating to the construction of a frame or floor. Stacked, the planks can also constitute the walls of a house in solid wood. For a frame, the primary function of the plank is to support its farms, once positioned between the walls of the house.
Like the plank, the bastaing is a rectangular piece of wood. Its dimensions are generally between 155 and 185 mm wide and 55 to 65 mm thick. Bastaing is an essential element of the frame. It is also used when making floors and any wooden construction. The bastaing is placed horizontally, resting on the walls or the beams of the house. As a main piece of structural assembly, the function of the bastaing is to support the joists, which are placed perpendicularly, to consolidate the entire structure.
The bastaing is available in different sizes (50 x 150 mm, 63 x 160 mm or 63 x 165 mm, 63 x 175 mm or 63 x 180 mm). It is much less imposing than a plank.
The solivette represents in dimension half of a bastaing. It has a thickness of 32 or 38 mm and a width of 150 to 200 mm. The joist has the same shape as the bastaing and it is also made of wood. Stairs are also essential parts of the frame. They are placed horizontally, resting on the walls or the beams, and constitute in the end the rigid structure of the floor of a house.