Offices · Headquarters · Co-working
Meeting pods, phonebooths and contract seating for open offices
Open offices save floor area and pay for it in noise, missing call space and chairs that fail within a year. The notes below take each problem on its own: what a phonebooth's acoustic rating really means, how many pods a headcount needs, how many sitting cycles a chair survives, and how to write those numbers into a tender.
Solution notes
How many phone booths does an office of this size need?
There is no industry standard for the count. Published ratios run from one booth per 10 people to one per 25, where 1:10 comes from booth manufacturers and 1:25 from public agency design standards. Size against the headcount present on a peak day rather than total headcount, because over 40% of staff never use one regularly. And the only study with real data shows placement matters more than the number.
1 cabin cho 10 đến 25 người, tuỳ nguồn 2026-10-28How many dB of sound reduction does a phonebooth need in an open office?
The number to ask for is speech level reduction Ds,A, measured to ISO 23351-1. Not NRC, and not Rw. Class A starts at 30 dB, class B runs from 25 to 30 dB. For everyday calls in an open office, class B is enough. For HR, legal or finance conversations, specify class A. A dB figure without a named standard and a test report number cannot be compared with any other brand figure.
30 dB là ngưỡng lớp A của Ds,A theo ISO 23351-1 2026-10-28Products in the solution
A-Chair
Modular stacking chair by jehs+laub. Six article numbers combine die-cast aluminium or plastic frames with wood or plastic shells, each also in an armrest version.
CAN.ONE
Single-person acoustic cabin on a circular 1235 mm footprint. Aluminium extrusion structure with PVC wall panels and polyester acoustic lining, plus fresh-air extraction.
CAN.DUO
Two-person acoustic cabin on a 2200 x 1245 mm footprint. Same construction system and finish collections as CAN.ONE, positioned for collaborative work.
ray
Conference swivel chair by jehs+laub. Fifteen article numbers built around a fully upholstered shell in three back heights on four- or five-star die-cast aluminium bases.
The brands behind the solution
Terra Nova imports, installs and warrants the brands below in Vietnam.
Brand — Workplace & Acoustic
Acoustic phonebooths & pods — Tam.Series
AXIOM engineers acoustic phonebooths and pods for offices, lobbies and public spaces. Tam.Series asks: what if privacy didn't have to come in a box? Architectural form, genuine acoustic isolation, active ventilation, presence sensing.
Why Terra Nova chose it
Supplied to: a technology office in HCMC and other workplaces.
Brand — Contract Furniture
Brunner
German contract furniture
Brunner (Germany) manufactures seating, tables and furniture systems for auditoriums, offices, F&B and public spaces — precise industrial production, European design, built for heavy use. Terra Nova works directly with the Brunner APAC team.
Why Terra Nova chose it
Supplied with strategy-consulting and office clients in Vietnam.
Need the technical pack and a test fit for an office in design?
Send the floor plan and headcount. We return the pod count, placement and a seating schedule by zone within two business days.