{"id":3258,"date":"2013-09-08T09:35:56","date_gmt":"2013-09-08T13:35:56","guid":{"rendered":"http:\/\/www.constructionspecifier.com\/?p=3258"},"modified":"2017-01-20T10:33:50","modified_gmt":"2017-01-20T15:33:50","slug":"meet-me-inside-the-acoustic-guitar-music-city-centers-mile-of-operable-partitions","status":"publish","type":"post","link":"https:\/\/www.constructionspecifier.com\/meet-me-inside-the-acoustic-guitar-music-city-centers-mile-of-operable-partitions\/","title":{"rendered":"Meet Me Inside the Acoustic Guitar: Music City Center\u2019s mile of operable partitions"},"content":{"rendered":"<figure id=\"attachment_3272\" aria-describedby=\"caption-attachment-3272\" style=\"width: 316px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_062.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-3272\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_062-1000x666.jpg\" alt=\"Photos courtesy Music City Center\" width=\"316\" height=\"210\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_062-1000x666.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_062-300x199.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_062-624x415.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_062.jpg 2048w\" sizes=\"auto, (max-width: 316px) 100vw, 316px\" \/><\/a><figcaption id=\"caption-attachment-3272\" class=\"wp-caption-text\"><em>Photos courtesy Music City Center<\/em><\/figcaption><\/figure>\n<p><strong>by Scott Staedter<br \/>\n<\/strong>Every great work of architecture enhances its own aesthetic appeal by blending with and becoming a representation of its surroundings\u2014architecturally, topographically, and culturally. Music City Center, site of this year\u2019s Construct show, is clearly in harmony with the Nashville scene.<\/p>\n<p>Located in the South of Broadway (SOBRO) neighborhood, just a few blocks from the historic Ryman Auditorium and near other landmarks like the Grand Ole Opry, the $585-million convention center opened in May 2013. It boasts bold design features, including an undulating roof to reflect the city\u2019s profile of rolling hills, and the interior complex curves of wood and other material that situate occupants inside a grand ballroom shaped like an acoustic guitar. Other areas of the facility immerse visitors inside other musical instruments, such as mandolins, fiddles, and a piano.<\/p>\n<p>The building\u2019s interior evokes continuous motion\u2014the planes and curves always gesturing visitors onward to something interesting just around the bend. Natural light permeates the main concourse and local\/regional artworks abound in spaces big and small.<\/p>\n<p>The challenge facing the design team was how to maintain the utmost acoustical separation within a flexible-spaced facility with such an undulating design and with multiple floors of divisible ballrooms. For convention centers, the flexibility to accommodate various space requirements for differing simultaneous events is critical. Requirements can change week to week and day to day.<\/p>\n<figure id=\"attachment_3267\" aria-describedby=\"caption-attachment-3267\" style=\"width: 396px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC010411_063.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3267\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC010411_063-1000x668.jpg\" alt=\"For the $585-million convention center, work began in early 2010. The facility extends the length of three blocks.\" width=\"396\" height=\"265\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC010411_063-1000x668.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC010411_063-300x200.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC010411_063-624x417.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC010411_063.jpg 2048w\" sizes=\"auto, (max-width: 396px) 100vw, 396px\" \/><\/a><figcaption id=\"caption-attachment-3267\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">For the $585-million convention center, work began in early 2010. The facility extends the length of three blocks.<\/span><\/figcaption><\/figure>\n<p><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC031913_045.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3269\" style=\"margin-bottom: 85px;\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC031913_045-1000x666.jpg\" alt=\"MCC031913_045\" width=\"397\" height=\"265\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC031913_045-1000x666.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC031913_045-300x200.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC031913_045-624x416.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCC031913_045.jpg 2048w\" sizes=\"auto, (max-width: 397px) 100vw, 397px\" \/><\/a><strong>Acoustics and flexibility<\/strong><br \/>\nThe flexible spaces that must be managed within the four-story, 11,1484-m<sup>2<\/sup> (1.2 million-sf) Music City Center include:<\/p>\n<ul>\n<li>32,808-m<sup>2<\/sup> (353,143-sf) exhibit hall;<\/li>\n<li>5342-m<sup>2<\/sup> (57,500-sf) grand ballroom, which includes a complete theatrical stage at one end;<\/li>\n<li>1672-m<sup>2<\/sup> (18,000-sf) junior ballroom; and<\/li>\n<li>8361 m<sup>2<\/sup> (90,000 sf) of meeting space (with up to 60 separate rooms).<\/li>\n<\/ul>\n<p>\u201cA big part of our ability to be flexible lies in the operable partitions installed in many parts of the building,\u201d explains the facility\u2019s president\/CEO, Charles Starks. \u201cWe can configure our spaces in numerous different layouts and enjoy the engaging design because of the quality of the operable partitions and the fact the manufacturer conformed them to the challenging curved designs of various building areas. Their adaptability was crucial.\u201d<\/p>\n<p>Starks said the design team and the city spent several years listening to customers and potential customers describe what they valued the most in a convention center. He says the number one preference was flexibility. Customers want to work in spaces\u2014exhibit halls, meeting rooms, etc.\u2014sized appropriately for their needs. Starks says meeting this criterion is what pleased the executives and managers associated with the Music City Center: they were able to find an operable partition solution that easily divides and sub-divides without having to sacrifice the grand design of curves and fluidity inside the building.<\/p>\n<p>The manufacturer engineered many special elements to ensure the panels were easy to set up and maintained acoustic separation within all of the flexible meeting spaces.<\/p>\n<figure id=\"attachment_3270\" aria-describedby=\"caption-attachment-3270\" style=\"width: 398px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal041913_490.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3270\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal041913_490-1000x666.jpg\" alt=\"For Nashville, Tennessee\u2019s Music City Center, the challenge facing the design team was how to maintain the utmost acoustical separation within a flexible-spaced facility with such an undulating design and with multiple floors of divisible ballrooms. The adaptability of high-quality operable partitions was crucial.\" width=\"398\" height=\"265\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal041913_490-1000x666.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal041913_490-300x199.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal041913_490-624x415.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal041913_490.jpg 2048w\" sizes=\"auto, (max-width: 398px) 100vw, 398px\" \/><\/a><figcaption id=\"caption-attachment-3270\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">For Nashville, Tennessee\u2019s Music City Center, the challenge facing the design team was how to maintain the utmost acoustical separation within a flexible-spaced facility with such an undulating design and with multiple floors of divisible ballrooms. The adaptability of high-quality operable partitions was crucial.<\/span><\/figcaption><\/figure>\n<p><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_046.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-3271\" style=\"margin-bottom: 135px;\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_046-1000x666.jpg\" alt=\"MCCFinal042413_046\" width=\"398\" height=\"265\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_046-1000x666.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_046-300x199.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_046-624x415.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_046.jpg 2048w\" sizes=\"auto, (max-width: 398px) 100vw, 398px\" \/><\/a><strong>Customization<\/strong><br \/>\nWhen it comes to operable acoustic partitions, design\/construction professionals should not be shy about seeking customized panels. This is supposed to be standard practice in the industry and helps set projects apart. Specifiers can benefit from learning about these modifications designed for Music City Center, but applicable to other projects.<\/p>\n<p><em>Custom-designed bottom seals<\/em><br \/>\nWhen designing buildings with multiple floors of operable partitions, designers should conduct a simple deflection study to determine whether the cumulative building deflection can be absorbed by the operable partitions. If not, the panels will not seal properly and will leak sound. Mechanical bottom seals with travel up to 320 mm (13 in.) can be supplied for severe building movements. In the case of the Music City Center, the manufacturer installed a customized 152-mm (6-in.) bottom seal to maintain the acoustical connection to accommodate the cumulative deflection.<\/p>\n<p><em>Spring-loaded seals<\/em><br \/>\nIn addition to the seal\u2019s travel distance, they must also be able to automatically adjust with building movements. Seals that are manually cranked down to the floor when set up will not compensate for the building\u2019s movement, and will leak sound. The seals must maintain downward or upward pressure at all times, allowing for movements caused by changing floor loads, snow loads, and expansion with heat and cold.<\/p>\n<p><em>Special vertical seals<\/em><br \/>\nPanel-to-panel connections are vital to maintaining acoustical performance. In the case of Music City Center, the main ballroom partitions are installed on radius-curved tracking systems. The radius of the curve is often so severe traditional seals installed on the vertical astragals would not maintain an acoustic seal. Specifiers should request documentation that the panel-to-panel connections are maintained when using radius or segmented tracks.<\/p>\n<p>The grand ballroom panels at Music City Center have specially designed lead panel polypropylene bulb seals to ensure a tight connection when sealing the panels to the face of other operable panels. These custom lead seals compensate for varying positions and angles, since the seal connections are angled due to the radius tracking.<\/p>\n<figure id=\"attachment_3264\" aria-describedby=\"caption-attachment-3264\" style=\"width: 319px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/IMG_4915.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-3264\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/IMG_4915-1000x666.jpg\" alt=\"Interior images of Music City Center\u2019s Grand Ballroom. Photos \u00a9 Russell Moore, Russell Moore Portraiture\" width=\"319\" height=\"212\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/IMG_4915-1000x666.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/IMG_4915-300x199.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/IMG_4915-624x415.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/IMG_4915.jpg 2048w\" sizes=\"auto, (max-width: 319px) 100vw, 319px\" \/><\/a><figcaption id=\"caption-attachment-3264\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Interior images of Music City Center\u2019s Grand Ballroom. <\/span><em>Photos \u00a9 Russell Moore, Russell Moore Portraiture<\/em><\/figcaption><\/figure>\n<p><strong>Considerations for large partitions<\/strong><br \/>\nThe numbers for the operable partitions used in the Nashville project are impressive. More than 1.6 km (1 mi) of operable partition was installed, along with 2 km (1.25 mi) of track. The 1242 panels employed weigh a total of 680,389 kg (1.5 million lb). The largest of these are in the grand ballroom, standing at 12.6 m (41 \u00bd ft) tall and 1.5 m (5 ft) wide, weighing 1134 kg (2500 lb) each. The panels themselves represent 13,935.5 m<sup>2<\/sup> (150,000 sf) of surface space; specially designed trucks with self-contained unloading cranes transported 45 loads of panels from a facility in Janesville, Wisconsin.<\/p>\n<p>The installation of such large, heavy partitions was a show-stopper in and of itself. Ben Jolley, project manager for the factory-trained installer, says they had to specially fit a forklift with an engineered, auxiliary panel-lifter to secure each panel as it was raised and turned into place.<\/p>\n<p>\u201cThe panels were some of the largest single piece panels ever installed in the United States. Believe it or not, once we got into the rhythm of it, we were able to install a new panel every six minutes,\u201d says Jolley.<\/p>\n<figure id=\"attachment_3262\" aria-describedby=\"caption-attachment-3262\" style=\"width: 267px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/091611_827.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-3262\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/091611_827-1000x750.jpg\" alt=\"Construction nearing completion for the Music City Center. The four-story, 11,1484-m2 (1.2 million-sf) convention center opened in May 2013. Photo courtesy Music City Center \" width=\"267\" height=\"200\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/091611_827-1000x750.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/091611_827-300x225.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/091611_827-624x468.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/091611_827.jpg 2048w\" sizes=\"auto, (max-width: 267px) 100vw, 267px\" \/><\/a><figcaption id=\"caption-attachment-3262\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Construction nearing completion for the Music City Center. The four-story, 11,1484-m2 (1.2 million-sf) convention center opened in May 2013. <\/span><em>Photo courtesy Music City Center<\/em><\/figcaption><\/figure>\n<p>The feat is remarkable when one considers these partitions were unusually installed against a curved line, not the typical \u2018squaring up\u2019 against a straight line.<\/p>\n<p class=\" wp-image-3262\">The Music City Center\u2019s grand ballroom offered more acoustical challenges to the architectural and construction teams because of the theatre stage designed at one end of the 5342-m<sup>2<\/sup> (57,500-sf) room. At issue was how to separate the main stage from the meeting spaces while simultaneously setting up for concerts and other events in conjunction with meetings being held within the adjacent ballroom. The answer was to design a customized floor plan that included an electric \u2018stage curtain door\u2019 that was installed onto the operable partition manufacturer\u2019s electric tracking system. Electric tracks, made from the same structural steel tube manual tracking systems, were assembled to automatically open and close the huge customized doors installed in front of the main stage.<\/p>\n<p class=\" wp-image-3262\">In addition, the grand ballroom\u2019s floor plan design allowed setup of operable partitions in a secondary location using electric switches and programmable carriers. In this case, the alternative location allows Music City Center to install a highly acoustically rated complete wall in front of the stage area, creating a secondary buffer between the stage and meeting rooms. Having both the customized electric stage door and an acoustical operable partition dramatically reduces sounds created by stage setup and lighting crews, preventing much of the noise from entering the flexible meeting spaces.<\/p>\n<p><strong>Sound control<\/strong><br \/>\nSound absorption and other acoustical considerations are a big selling point for operable partitions, particularly in a music capital like Nashville. The manufacturer of the Music City Center\u2019s operable partitions has only one of nine company-owned acoustical laboratories in the United States\u2014a testing facility created in 1969 that meets stringent accreditation standards from the National Voluntary Laboratory Accreditation Program (NVLAP).<sup>1<\/sup><\/p>\n<figure id=\"attachment_3261\" aria-describedby=\"caption-attachment-3261\" style=\"width: 325px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-06-13-05.55.55-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-3261\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-06-13-05.55.55-1-1000x666.jpg\" alt=\"This crane and scaffolding were part of an unusual installation process as workers had to get the 12.7-m (41 \u00bd-ft) operable partition panels inside the Grand Ballroom on the top floor. Photo courtesy Crawford Door Sales of Nashville Inc.\" width=\"325\" height=\"216\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-06-13-05.55.55-1-1000x666.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-06-13-05.55.55-1-300x199.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-06-13-05.55.55-1-624x415.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-06-13-05.55.55-1.jpg 1280w\" sizes=\"auto, (max-width: 325px) 100vw, 325px\" \/><\/a><figcaption id=\"caption-attachment-3261\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">This crane and scaffolding were part of an unusual installation process as workers had to get the 12.7-m (41 \u00bd-ft) operable partition panels inside the Grand Ballroom on the top floor.<\/span> <em>Photo courtesy Crawford Door Sales of Nashville Inc.<\/em><\/figcaption><\/figure>\n<p>Administered by the National Institute of Standards and Technology (NIST), these voluntary standards are driven by test procedures developed by the ASTM Committee E33 on Building and Environmental Acoustics, which meets annually to update test protocol and improve product and building performance.<\/p>\n<p>For any architect or specifier, determining the amount of sound control needed is one of the most important considerations when evaluating operable and other styles of movable partitions for any facility. First, one must determine what types of activities will be held in the rooms. A Sunday school class requires lower sound control requirements than a banquet hall. It is important to note the folding walls will not perform to expectations if the room in which they are located does not have the surrounding building elements equivalent to that of the partitions. Specifiers should always include ASTM E557-12, <em>Standard Guide for Architectural Design and Installation Practices for Sound Isolation between Spaces Separated by Operable Partitions<\/em>, within the performance section to ensure the surrounding conditions meet the in-field performance requirements.<\/p>\n<p class=\" wp-image-3261\">Folding panel partitions are classified by their effectiveness in reducing transmitted sound by a Sound Transmission Class (STC) rating, based on test performance in an accredited acoustical laboratory under ASTM E90-09, <em>Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements<\/em>. The Nashville Music City Center was specified to achieve a laboratory performance of no less than 52 STC.<\/p>\n<p>The project was also specified to meet a field-performance Noise Isolation Class (NIC) of 42\u2014this metric comes from ASTM E336, <em>Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings<\/em>. Whereas STC is a number describing the laboratory performance of a single building element in stopping the transmission of sound, NIC deals with the performance of all building elements in isolating one room from another.<\/p>\n<p>Operable partitions achieve varying levels of acoustical performance based on three main factors that specifiers can call out within the materials portion of Section 2.<\/p>\n<figure id=\"attachment_3274\" aria-describedby=\"caption-attachment-3274\" style=\"width: 368px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/NCS-Cornell-May-13-272.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3274\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/NCS-Cornell-May-13-272-1000x666.jpg\" alt=\"The MCC\u2019s Davidson Ballroom, a 1672-m2 (18,000-sf) space, is the smaller of the two ballrooms in the convention center.\" width=\"368\" height=\"245\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/NCS-Cornell-May-13-272-1000x666.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/NCS-Cornell-May-13-272-300x199.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/NCS-Cornell-May-13-272-624x415.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/NCS-Cornell-May-13-272.jpg 2048w\" sizes=\"auto, (max-width: 368px) 100vw, 368px\" \/><\/a><figcaption id=\"caption-attachment-3274\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">The MCC\u2019s Davidson Ballroom, a 1672-m<sup>2<\/sup> (18,000-sf) space, is the smaller of the two ballrooms in the convention center.<\/span> <em>Photo \u00a9 Russell Moore, Russell Moore Portraiture<\/em><\/figcaption><\/figure>\n<figure id=\"attachment_3260\" aria-describedby=\"caption-attachment-3260\" style=\"width: 410px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-04-25-15.51.46.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3260\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-04-25-15.51.46-1000x597.jpg\" alt=\"Some of the 1242 panels delivered by a specially designed truck with self-contained unloading cranes transported 45 separate loads from a facility in Janesville, Wisconsin. Photo courtesy Crawford Door Sales of Nashville Inc.\" width=\"410\" height=\"245\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-04-25-15.51.46-1000x597.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-04-25-15.51.46-300x179.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-04-25-15.51.46-624x372.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/2012-04-25-15.51.46.jpg 2048w\" sizes=\"auto, (max-width: 410px) 100vw, 410px\" \/><\/a><figcaption id=\"caption-attachment-3260\" class=\"wp-caption-text\"><span style=\"font-family: arial,helvetica,sans-serif;\"><span style=\"font-size: 10pt;\">Some of the 1242 panels delivered by a specially designed truck with self-contained unloading cranes transported 45 separate loads from a facility in Janesville, Wisconsin. <\/span><span style=\"font-size: 10pt;\"><em>Photo courtesy Crawford Door Sales of Nashville Inc.<\/em><\/span><\/span><\/figcaption><\/figure>\n<p class=\"wp-image-3274\"><em>Density<\/em><br \/>\nTypically shown as \u2018weight per area,\u2019 the density of the partition is based on the combination of the face materials (typically steel) and the acoustical substrates within the cavity of the partition.<\/p>\n<p><em>Panel thickness<\/em><br \/>\nPartition panel thickness ranges from 76 to 127 mm (3 to 5 in.), depending on the manufacturer. The rule of thumb is the thicker the panel, the better acoustical separation it can achieve. The combination of panel thickness and density helps the panels perform well in low- and mid-range octave frequencies.<\/p>\n<p><em>Seal systems<\/em><br \/>\nThe surrounding seal systems are critical to stop high-frequency sound from leaking around the panel edges. To reduce flanking paths around the partition, pressure is the most important element to achieve a tight compression seal. Top and bottom seals with upward and downward forces are critical to acoustical performance. Further, partitions with final closure methods that provide vertical pressure \u2018squeezing\u2019 the vertical seals together should be specified.<\/p>\n<p class=\" wp-image-3260\"><strong>The overall project<\/strong><br \/>\nThe Nashville Music City Center resulted from the collaboration of three architectural firms: Atlanta-based tvsdesign, Nashville-based Tuck Hinton Architects, and the Nashville office of Moody Nolan Architects. The project is seeking Silver certification under the U.S. Green Building Council\u2019s (USGBC\u2019s) Leadership in Energy and Environmental Design (LEED) program. Among the many sustainable features is the vegetated roof that measures 16,258 m<sup>2<\/sup> (175,000 sf)\u2014along with the ground-level landscaping, it will be irrigated by the 1.36 million-L (360,000-gal) water-retention tank capturing rain runoff.<\/p>\n<p>The achievement of the LEED Silver is also assisted with the high concentration of operable partitions within facility. They contribute to:<\/p>\n<ul>\n<li>Materials and Resources (MR) Credit 4, <em>Recycled Content<\/em>, thanks to being 60 percent pre-consumer and seven percent post-consumer by weight; and<\/li>\n<li>Indoor Environmental Quality (EQ) Credit 4.1, <em>Low-emitting Adhesives<\/em>.<\/li>\n<\/ul>\n<figure id=\"attachment_3273\" aria-describedby=\"caption-attachment-3273\" style=\"width: 344px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_072.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-3273\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_072-1000x666.jpg\" alt=\"More than 1.6 km (1 mi) of operable partition was installed, along with 2 km (1.25 mi) of track inside Music City Center. The 1242 panels employed weigh a total of 680,389 kg (1.5 million lb). Photo courtesy Music City Center\" width=\"344\" height=\"229\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_072-1000x666.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_072-300x199.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_072-624x415.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/05\/MCCFinal042413_072.jpg 2048w\" sizes=\"auto, (max-width: 344px) 100vw, 344px\" \/><\/a><figcaption id=\"caption-attachment-3273\" class=\"wp-caption-text\"><span style=\"font-family: arial,helvetica,sans-serif; font-size: 10pt;\">More than 1.6 km (1 mi) of operable partition was installed, along with 2 km (1.25 mi) of track inside Music City Center. The 1242 panels employed weigh a total of 680,389 kg (1.5 million lb). <\/span><em>Photo courtesy Music City Center<\/em><\/figcaption><\/figure>\n<p>The size of the Music City Center is every bit impressive as its fluid form of curves and waves. For instance, one exterior wall features 46-m (150-ft) tall windows that rise from the floor to the ceiling. Such heights give the impression the building has two or three times the number of floors it actually has.<\/p>\n<p>The building extends the width of six city blocks. Construction required 7300 workers and 400 contractors. Approximately 152,910 m<sup>3<\/sup> (200,000 cy) of rock and soil were excavated\u2014a process that took 24 weeks alone. About 84,101 m<sup>3<\/sup> (110,000 cy) of structural concrete, with 13,500 tons of rebar, was placed.<\/p>\n<p class=\" wp-image-3273\">The hallmarks of great architecture are form and function. Nashville\u2019s newest crown jewel will serve countless different functions, thanks in part to its massive size and to the flexibility of space management afforded by its acoustical partitions.<\/p>\n<p><strong>Notes<\/strong><br \/>\n<sup>1<\/sup> For more information, visit <a href=\"http:\/\/ts.nist.gov\/standards\/scopes\/programs.htm\">ts.nist.gov\/standards\/scopes\/programs.htm<\/a>.<\/p>\n<p><em>Scott Staedter is the senior manager of global brand development for Hufcor Inc., and has more than 20 years of experience in the operable partition industry. His roles at the company have included marketing and architectural consulting, product development, national account development, major project sales, and service\/retrofit development. Staedter holds a bachelor\u2019s degree in business from University of Wisconsin-Madison and is a member of the Council of Educational Facility Planners International (CEFPI). He can be reached at <a href=\"mailto:%20sstaedter@hufcor.com\">sstaedter@hufcor.com<\/a>.<\/em><\/p>\n<p>To read the sidebar, click <a href=\"http:\/\/www.constructionspecifier.com\/masterformat\/meet-me-inside-the-acoustic-guitar-stc-ratings\/\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>This article examines the acoustic properties of operable partitions specified throughout Nashville\u2019s Music City Center\u2014the site of Construct 2013 and the CSI Annual Convention. It also includes discussion on some of the recent sound-control testing involving these flexible walls.<\/p>\n","protected":false},"author":4,"featured_media":3272,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[520,179,449,190,289,500,462],"tags":[812,53,813,814,815],"class_list":["post-3258","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-features","category-masterformat","category-uniformat","category-10-00-00-specialties","category-10-20-00-interior-specialties","category-c1010interior-partitions","category-c10interior-construction","tag-10-22-00partitions","tag-acoustics","tag-convention-centers","tag-music-city-center","tag-operable-partitions","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Meet Me Inside the Acoustic Guitar: Music City Center\u2019s mile of operable partitions - The Construction Specifier<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.constructionspecifier.com\/meet-me-inside-the-acoustic-guitar-music-city-centers-mile-of-operable-partitions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Meet Me Inside the Acoustic Guitar: Music City Center\u2019s mile of operable partitions - The Construction Specifier\" \/>\n<meta property=\"og:description\" content=\"This article examines the acoustic properties of operable partitions specified throughout Nashville\u2019s Music City Center\u2014the site of Construct 2013 and the CSI Annual Convention. 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