TagSound Insulation(121)
-
2025-02-26StART SIRRPP Update — Slide 1 (February 26, 2025)
A Port of Seattle presentation slide dated February 26, 2025, providing an update on the Sound Insulation Repair and Replacement Pilot Program. The slide features a photograph of a residential home at address 12036, illustrating a property subject to the airport noise insulation program near Sea-Tac Airport. -
2025-02-26StART SIRRPP Update — Assessment Key Findings — Slide 16 (February 26, 2025)
Presentation slide titled 'Assessment Key Findings' summarizing results of a sound insulation assessment: 99% of products installed prior to 2014 are past their expected useful life, lack of replacement parts limits resident maintenance, and all tested homes (including five Pre-1993) measured under 45dB DNL interior, with sound insulation packages deemed acoustically effective despite operational and appearance concerns. -
2025-02-26StART SIRRPP Update: Interior DNL Eligibility Threshold and Acoustic Testing Results — Slide 14 (February 26, 2025)
Slide 14 of a presentation on acoustic testing for a Sea-Tac Airport noise insulation program, explaining that interior DNL (calculated as Exterior DNL minus Noise Level Reduction) is the eligibility metric, with a threshold of 45dB DNL. All 30 homes tested fell below the FAA's 45dB DNL interior noise threshold, including five Pre-1993 homes evaluated under the FAA re-insulation program. -
2025-02-26StART SIRRPP Update — Acoustic Testing Overview and Results, Slide 13 (February 26, 2025)
Slide 13 of a presentation titled 'Acoustic Testing Overview and Results' shows two field photographs: an exterior loudspeaker on a tripod set up in front of a residential house, and an interior shot of a technician using a measurement microphone on a pole inside a kitchen. The setup depicts standard residential sound transmission testing methodology. -
2025-02-26StART SIRRPP Update — Acoustic Testing Procedures and DNL Metrics — Slide 12 (February 26, 2025)
This slide from a Seattle-Tacoma International Airport (SEA) noise remedy presentation summarizes acoustic testing procedures, stating that testing followed the FAA-approved 2017 Acoustic Testing Plan (ATP). Key metrics cited include a 70dB DNL exterior noise contour threshold within the 2014 SEA Noise Remedy Boundary and a 27dB Noise Level Reduction (NLR) example calculated from interior and façade measurements. -
2025-02-26StART SIRRPP Update — Field Assessment: Window Installation and Maintenance Issues (Slide 11, February 26, 2025)
A presentation slide (page 11) summarizing field assessment findings related to window installation and maintenance issues, including screws at sill bottoms promoting water damage, caulked-over weepholes, and design factors affecting longevity and repairability. Specific concerns noted include non-removeable storm panels on fixed picture windows and inability to clean windows with moving sashes. -
2025-02-26StART SIRRPP Update — Field Assessment Findings: Windows, Doors, and Ventilation — Slide 10 (February 26, 2025)
A presentation slide summarizing field assessment findings for a noise insulation or mitigation program. Key findings include operational and appearance issues with windows (locking, condensation, seal failures, mold), absence of entry doors in port-sponsored installations, and ventilation via non-mechanical vents or fresh air intakes. -
2025-02-26StART SIRRPP Update: Field Assessment and Acoustic Testing of 30 Homes — Slide 9 (February 26, 2025)
A presentation slide states that third-party consultants conducted field assessment and acoustic testing concurrently at 30 homes over a two-week period beginning August 19, 2024. The 30 homes were selected to reflect the distribution of manufacturers by year for sound insulation packages installed between 1986 and 2014. -
2025-02-10Sound Insulation Repair and Replacement Pilot Program Assessment Update
The Port of Seattle launched a Sound Insulation Repair and Replacement Pilot Program to assess the effectiveness of previously installed noise insulation packages in homes near Seattle-Tacoma International Airport. Authorized under Commission Order 2024-04 with a $6.5 million tax levy-funded budget—$5 million of which is reserved for design and construction—the program involved community outreach, property owner surveys, and acoustic testing throughout 2024. Properties were prioritized using an equity index to ensure underserved communities were considered, with design and construction work expected to begin in 2025. -
2025-02-10Aviation Noise Working Group Agenda — February 10, 2025
The Aviation Noise Working Group met on February 10, 2025, to review operational trends at Seattle-Tacoma International Airport (SEA) and discuss noise reduction efforts. Key topics included the Aviation Near-term Noise Action Agenda, potential airfield noise monitoring, and an assessment of the Sound Insulation Repair and Replacement Pilot Program. The meeting was organized by the SEA Stakeholder Advisory Round Table (StART), which facilitates cooperation between the Port of Seattle and neighboring communities.