Outdoor Concert Hall Roof on Pasta Island, Jelgava, Latvia

Customer Project

Investor City of Jelgava, Latvia
Architect Vents Grietens
Projektu birojs Grietens un Kagainis SIA, Latvia
Structural Analysis Rodentia SIA, Latvia
Design Igate Būve SIA, Latvia
Manufacturing IKTK SIA, Latvia

A timber roof structure was recently constructed over an existing amphitheater in Jelgava, Latvia. The project located on Pasta Island serves as a multi-functional building for recreational, cultural and social activities.

It was decided to use an oval structure to cover the circular amphitheater. The architectural design was inspired by a seashell as the building is located on an island.

Special acoustic screens and panels as well as rounded elements for the beams were designed in collaboration with an acoustics engineer to provide optimal sound for high level performances.


The structure is comprised of curved glulam beams with steel ties that are simply supported with an oval glulam ring beam. The curved glulam ring beam is further supported by steel columns. There is a pinned connection on either side of the building where the ring beams are connected to the support.

The total height of the structure is 47 ft 7 in. The overall dimensions are 198 ft 9 in by 199 ft 2 in with the longest curved glulam beam span of almost 197 ft.

The structure is covered with tensile fabric designed and manufactured by Canobbio Textile Engineering.

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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RFEM Timber Structures
RF-TIMBER Pro 5.xx

Add-on Module

Timber design according to Eurocode 5, SIA 265 and/or DIN 1052

Price of First License
1,120.00 USD
RFEM Connections
RF-JOINTS Timber - Steel to Timber 5.xx

Add-on Module

Design of indirect timber connections with dowel-type fasteners and steel plates according to NDS and Eurocode 5

Price of First License
850.00 USD