sill

girder joist piling pillar plank pole shaft timber

axle balk bolster boom brace cantilever column crossbar crosspiece jamb lintel pile post prop rafter scantling spar stanchion stay stringer strip strut stud two-by-four

berm ridge rim

bar bench bracket console edge jut mantle offset path projection reef route step strip tier track trail walk way

bump bunch eaves extension hook jut knob ledge outthrust point prolongation prominence protrusion protuberance ridge rim shelf spine spur step swelling

depression

beam

axle balk bolster boom brace cantilever column crossbar crosspiece girder jamb joist lintel pile piling pillar plank pole post prop scantling shaft spar stanchion stay stringer strip strut stud timber two-by-four

brink verge

dawn door doorstep doorway edge entrance gate inception origin outset point start vestibule

point of departure starting point

middle

completion conclusion death disadvantage end ending finish