Traditionally, rather than nails, mortis and tenon joints and wooden pegs are used.
From the en.wikipedia.org
A tenon is a projection on the end of a timber for insertion into a mortise.
From the en.wikipedia.org
Mortise and tenon joints are attested from the earliest Predynastic period.
From the en.wikipedia.org
Tenon is the business left over once Fletcher Forests sold its forests.
From the stuff.co.nz
Generally the size of the mortise and tenon is related to the thickness of the timbers.
From the en.wikipedia.org
Specially made wood-tenon rafters have been ordered from Tennessee.
From the charlotteobserver.com
Pieces have little decoration, just visible mortise-and-tenon joints.
From the courier-journal.com
A fine tooth tenon saw is used to cut across the grain to produce a reasonably fine, accurate cut.
From the en.wikipedia.org
Mortise and tenon joinery holds the barn's hand-hewn supports, with timbers slotted into each other.
From the jsonline.com
More examples
A projection at the end of a piece of wood that is shaped to fit into a mortise and form a mortise joint
A projecting member left by cutting away the wood around it, and made to insert into a mortise, and in this way secure together the parts of a frame; To make a tenon
(TENONS) [Ex26:17,19; Ex 36:22,24] In building and cabinet work, the end of a piece of timber, which is fitted to a mortise for insertion, or inserted, for fastening two pieces of timber together.
A protrusion from a board that fits into a matching mortise to form a joint.
The bottom of the mast, with a shape designed to fit into the mast step.
The end of a board that is inserted into a mortise or opening in a second board; an exposed tenon passes entirely through the second board. (See also mortise.)
A projecting tongue at the end of a length of timber which fits into matching mortice.
A projecting member in a block of stone or other building material that fits into a groove or hole to form a joint.
A protruding tongue that fits into the female mortise in the stile. Often tenons are wedged, pegged or glued for additional strength