三角形也是在上面预制的混凝土板中包覆的体量 。 它的特点是分为三个层次 ， 并层级后退 ， 一方面呼应了街对面的重型艺术建筑的形式 ， 另一方面以悬挑式的体量覆盖主入口 。

The Forum follows the shape of the triangular corner plot created by the intersection of West 125th Street and Broadway.

Also triangular is the volume clad in prefabricated concrete panels set above. It features three levels that step back at the rear – mirroring the shapes of his top-heavy arts building across the street – and ends in a cantilevered peak to cover the main entrance.

圆柱形机械系统从屋顶升起 ， 补充了建筑物和周围19世纪工业建筑被剥离的缺憾 。