Suspended Acoustic Ceilings for a Glass-Walled Office: PwC in Tampa, FL

• Project: PwC Tampa Office Floor Acoustic Ceiling
• Location: Westshore Business District, Tampa, FL
• Facility Type: Class A open-plan office floor with collaboration zones
• Condition: Hard resilient flooring, curtain wall on two exposures, exposed structural deck
• Scope: Suspended acoustic ceiling systems across the open floor, collaboration areas and glazed perimeter
• Assembly: Large-format acoustic felt clouds, cable-suspended off the deck with a plenum cavity, coordinated around an architectural linear lighting package
• Result: Reverberation time reduced from 1.3 seconds to 0.6 seconds

PwC’s Tampa office sits on a high floor with full-height glazing on two exposures and long views across the Westshore corridor. It is also a hard acoustic problem: an open-plan floor finished in hard resilient flooring, wrapped in curtain wall, bounded by painted drywall, and capped by an exposed structural deck. Nothing in that palette absorbs sound.

Commercial Acoustics supplied and coordinated the suspended acoustic ceiling across the open floor, the collaboration zones and the glazed perimeter, using large-format acoustic ceiling clouds hung clear of the deck. The floor went from 1.3 seconds of reverberation to 0.6 without a second suspended layer or a single changed architectural finish.

• Core Problem: Two largest vertical surfaces are curtain wall and reflect nearly all energy
• No Partitions: Nothing interrupts speech paths across the floor plate
• Finish Palette: Chosen for durability and daylight, not absorption
• Consequence: The ceiling carries the entire absorption budget alone

An enclosed office is a bounded problem — four walls, a door, one dominant talker at a time. An open floor has none of that. There is no partition to interrupt speech, the finish palette gets picked for durability and daylight rather than absorption, and with curtain wall on two exposures the two largest vertical surfaces in the room hand back almost everything that hits them.

That leaves the ceiling. The floor is committed, the glazing is the reason the floor plate leased, and the walls are broken up by doors and openings — so the ceiling carries the entire absorption budget on its own. We cover the underlying principles in our guide to open plan office acoustics.

• Approach: Continuous large-format field instead of discrete scattered panels
• Coverage Target: 50–70% of the ceiling plane, measured net of every penetration
• Absorption: NRC 0.7 or better across the field
• Mounting: Cable-suspended off the deck with a working plenum cavity

We specified a continuous large-format cloud field rather than an array of discrete panels. Scattered clouds leave reflective gutters between them, and those gaps are bare deck handing energy straight back into the room from the one plane the design is trying to control. A continuous field gives a uniform absorptive plane and sabins you can predict.

Coverage matters as much as the product. Published research on ceiling absorption puts the threshold for an open-plan floor at roughly 50% ceiling coverage against about 30% for a private office, and consultants commonly specify 60–70% at an NRC of 0.7 or better. Below that, measured reverberation stays stubbornly high no matter how good the panel is.

The field is cable-suspended off the deck rather than direct-mounted, and the plenum cavity behind it does real work. Porous absorbers run on air particle velocity, which is zero at a hard surface and peaks about a quarter-wavelength off it. Hanging the panel out into that zone pulls absorption into frequencies its own thickness could not reach flush-mounted, and opens the back face as well. The same product screwed flat to the deck is a weaker assembly for the same money.

• Conflict: Linear lighting and absorption occupy the same ceiling plane
• Every Penetration: Fixture, sprinkler drop, access point and camera subtracts absorptive area
• Method: Penetrations located in shop drawings before fabrication
• Rejected Option: A second suspended layer below the acoustic plane — costs ceiling height

The engineering on this job was coordination, not product selection. The lighting design is a continuous linear run with radiused corners sitting in the same plane as the absorption, plus recessed downlights. Every fixture, sprinkler drop, access point and camera is a hole in the absorptive field — area subtracted, and a small hard surface put back in its place.

We located them in shop drawings before anything was fabricated, pushed them toward the field edges and away from the densest occupancy, and counted the lost area against the coverage target rather than finding it at closeout. Running the lighting on a second suspended layer below the acoustic plane would have solved the conflict and cost the room its ceiling height — not a trade worth making on a floor whose whole quality is volume and daylight.

• Detail: Drywall light coffer carrying a recessed linear LED
• Acoustic Function: Felt field returns up behind the coffer toward the deck
• Why It Matters: The only absorptive surface oriented to catch horizontal energy
• Symptom It Fixes: Speech that sounds smeared in a room that measures fine on paper

At the perimeter a drywall coffer carries a recessed linear LED, and the felt field runs up behind it as a return toward the deck. That return reads as trim, but it is the only absorptive surface on the floor turned the right way to catch horizontal energy.

A cloud sits in the horizontal plane and handles the floor-to-ceiling path; it does almost nothing for the path running sideways between a curtain wall and the surface opposite it. That sideways path is what people are describing when they say speech sounds smeared in a room that measures fine on paper, and it is why the perimeter return matters more than its square footage suggests.

A continuous suspended cloud field, hung off the deck with a working plenum cavity and coordinated penetration by penetration against the lighting package, brought a hard-finished glass-walled office floor from 1.3 seconds to 0.6 seconds — without a second suspended layer or a single changed architectural finish.

See how we approached a different workplace palette at MicroLumen’s headquarters expansion in Oldsmar, how a cloud field performs in a restaurant at Olivia Italian in Tampa, or talk to us about acoustic consulting for offices.