Smoke Chamber. The space in a fireplace immediately above the throat, where the smoke gathers before passing into the flue, and narrowed by corbeling to the size of the flue lining above. Also Smoke Cavern.
Soldier Course. A course of stretchers set on end with the face showing on the wall surface.
Splay. A slope or bevel, particularly at the sides of a window or door.
Story Pole. A pole on which the height from joist to joist, as well as all intermediate openings, brick courses, etc., is indicated.
Stretcher. A brick laid on its flat side so as to show its face on the surface of the wall.
Template. Any form or pattern, such as centering, over which brickwork may be formed.
Thickness of Wall. The thickness of a wall stated in terms of brick, inches, or tiers, thus:
| In Number of Brick. | In Inches. | In Tiers. | |
| One | brick | 4" | 1 tier |
| Two | " | 8" or 9" | 2 tiers |
| Three | " | 12" or 13" | 3 tiers |
| Four | " | 16" or 17" | 4 tiers |
Throat. An opening at the top of a fireplace through which the smoke passes to the smoke chamber and chimney.
Tier. One of the four-inch, or one-brick, layers in the thickness of a wall. (Gilbreth).