Screw-bolts (boulon), round iron pin, with a square head at one end, and a screw thread at the other, on which turns an iron nut, serving to hold pieces of timber together.
Section (coupe), view of a building, or an architectural detail cut through.
Sill (tableau), part of the casing of a door or window which comes outside the enclosure.
Staircase (cage d’escalier), is the casing of masonry or timber-work in which are enclosed the steps of the stairs.
Stile (montant), term in joinery applied to all upright pieces.
Strap (étrier), band of iron forming a stirrup, and passing beneath the tie-beam of a principal, suspends it to the king-posts by means of bolts.
Straight-tread (giron-droit), signifies a step of equal width all its length; winding-tread, a step narrow towards the outer string, and enlarging towards the wall of the staircase. It is said, the steps of the stairs have a narrow tread when the width is small, and have a wide tread when their width is large.
String-board (crémaillère), piece of wood on which rests the ends of the steps of the stairs, and which is grooved to ramp with and receive the ends of the steps.
Strut (lien), slanting piece of wood connecting the blade to the king-post of a principal, or a horizontal bearer to a post.
Tenon (tenon), tongue left at the end of a piece of framing, and which fits into the end of the mortise.