The sloping walls of the arena are supported on a (1)… of structural-steel open-web joists (áàëêè ñ ðåø¸ò÷àòîé ñòåíêîé), beams and trusses. The four corners are framed with box trusses 14 ft wide and 18 ft deep, meeting at the apex of the pyramid. (2)… box truss consists of wide-flange chord members and double-angle web members. (3)… of the box trusses contain steel stairs fabricated inside them on the ground before truss erection. The stairs (4)… access to the observation level (îáçîðíàÿ ïëîùàäêà) from the ground.
Each box truss is supported on a massive concrete buttress wall (êîíòðôîðñíàÿ ñòåíà) 24 (5)… thick and two storeys tall. Secondary trusses (6)… from additional concrete buttress foundation walls to the box truss above. Steel brace beams are spaced every 30 ft up the slope, connecting to each box truss and secondary truss. The secondary trusses are spaced at 56 ft across each face of the pyramid, with 32in deep, long-span joists between (7)… .
Diagonal joist bridging (ðàñïîðêà) (8)… the joists in an inclined plane perpendicular to the face of the cladding. The 24 secondary trusses vary from 6.5 ft deep at the buttresses (9)… 11.6 ft at the box-truss connection. They weigh between 11 and 68 (10)…, depending on length.