HomeMy WebLinkAboutFile Documents.320 E Hyman Ave.0015-2024-BCOM (5) MARTIN/MARTIN
CONSULTING ENGINEERS
March 22, 2024
Perry Kleepies
City of Aspen
427 Rio Grande Place
Aspen, CO 81611
Re: Wheeler Opera House Rigging— Primary Structure clarifications
Martin/Martin, Inc. Project No.: 22.1511.S.01
The following information is intended to aid in the determining of fireproofing requirements for the
upcoming work related to updates to the rigging systems within the Wheeler Opera House in Aspen,
Colorado. For the proposed structural modifications within the Wheeler Opera House rigging grid,the
following is our understanding of the framing systems:
• The elements of the Primary Structural Frame being modified are the wood timber trusses along
gridlines T5,T6, &T7.
o The modification to these trusses involves installing a more robust connection from the
steel plate reinforcing to the timber member of the bottom chord.
• All additional framing being modified consists of beams designed to support rigging motors, rigging
pulleys, and gridiron surfaces.
o Based on our understanding of IBC 2021, Section 410.2.2,these elements would not be
considered part of the Primary Structural Frame for the purpose of fire-resistance rating.
Please contact us for any questions or concerns related to the above information.
Sincerely,
fragidie
Dan Griesenauer, PE
Project Engineer, Investigative Engineering
...44,04:10eitz
Nicole Lane, PE, SE
Principal, Investigative Engineering
G:\PROJECrS\22.1511.5.01-Wheeler Opera House Rigging\Formal Issued Docs\2024-03-22 Primary Structure Letter\Primary Structure Clarifications.docx
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