Grand Ballroom B at Iowa Events Center

Grand Ballroom B is 36.6 x 36.6 m (120 x 120 ft), 1,340 m² (14,419 sq ft), with a 12.2 m (40 ft) ceiling.

Plan view

Shape approximate: the venue publishes area only, so this room is drawn as a square of equal area.

LED wall that fits

Under a 12.2 m ceiling with 1.5 m trim and 0.3 m clearance you get 20 rows of 500 mm tile flown. Along the 36.6 m wall a Absen A2 Pro wall runs 58 x 20 (9744 x 3360 px, 11,600 kg, 214.6 kW).

Wall sizing assumes 1.5 m trim to the bottom edge, 0.3 m clearance under the ceiling, and a wall no wider than 80% of the longest wall. Weight and power are tile totals from the panel spec sheet; add processing, rigging, and cable.

Seating estimate

After a 12 x 7 m stage, Grand Ballroom B holds about 2,790 theater seats, 1,141 banquet seats at rounds of 10, or 784 classroom seats. Back row in theater is roughly 29.6 m from the downstage edge; the previz checks whether the bottom of the wall clears the heads in front.

Other rooms at Iowa Events Center

• Hall A/B/C116.8 x 116.8 m (383 x 383 ft) · 3.1 m ceiling
• Hall B/C81.4 x 109.7 m (267 x 360 ft) · 10.7 m ceiling
• Hall A81.1 x 58.2 m (266 x 191 ft) · 4 m ceiling
• Hall C81.4 x 56.4 m (267 x 185 ft) · 10.7 m ceiling
• Hall B81.4 x 53.3 m (267 x 175 ft) · 10.7 m ceiling
• Arena Floor88.4 x 38.7 m (290 x 127 ft) · 26.2 m ceiling
• Grand Ballroom54.9 x 24.4 m (180 x 80 ft) · 12.2 m ceiling
• Grand Ballroom A36.6 x 36.6 m (120 x 120 ft) · 12.2 m ceiling
• Junior Ballroom A/B/C53.6 x 18.3 m (176 x 60 ft) · 4.3 m ceiling
• Junior Ballroom B27.4 x 18.3 m (90 x 60 ft) · 4.3 m ceiling
• Junior Ballroom A13.4 x 18.3 m (44 x 60 ft) · 4.3 m ceiling
• Junior Ballroom C12.8 x 18.3 m (42 x 60 ft) · 4.3 m ceiling

Published dimensions (source), fetched 2026-09-05. All rooms at Iowa Events Center · Venues in Des Moines