"filled-spandrel" . "open-spandrel concrete arch bridge" . . . "spandrel arch" . "Open-spandrel arch" . . "open-spandrel arch bridge" . "Spandrel figures" . . . "Open-spandrel" . "Spandrel beams" . "Open spandrel" . "spandril" . . . . . . "Spandrel#Bridges" . "spandrels" . "spandrel" . "open-spandrel" . . . . . . "Spandrel" . "Spandrel" . "spandrils" . . . . . . "spandrel glass" . . . "architectural spandrels" .