uenoa tops japanese office building with three-dimensional timber roof

uenoa tops japanese office building with three-dimensional timber roof

tokyo-based architecture firm uenoa has completed a new office building for structural screw company synegic in tomiya city, japan. designed for a client who contributes to the spread of medium and large scale wooden buildings by providing the necessary joinery, the project expands the possibilities of such structures by incorporating a three-dimensional, cross-laminated timber (CLT) roof with a large truss spanning 18 meters.

uenoa tops japanese office building with three-dimensional timber roofimages of completed project by hiroyuki hirai, all courtesy of uenoa



uenoa has developed the company building to accommodate synegic‘s various working styles – from standard desk work to experiments, and collaboration with external researchers – in a way that they can influence each other, creating a lively dialogue and a sense of solidarity. the office floor plan follows the dynamic frame of the large timber roof, which dictates also the exterior form of the building. spread across two levels and a mezzanine platform, the working area balances between the steepness of the space, reinforced by the large roof, and an intimate, warm atmosphere created by the use of wood.uenoa tops japanese office building with three-dimensional timber roof



the three-dimensional roof shape is formed by connecting flat trusses made of laminated timber with a triangular CLT panels. by adopting a CLT panel for fastening flat trusses, it is possible to avoid complicated processing of joints and joining by hardware, and to enable a rational method of pre-cutting at the factory and on-site screw joining. in addition, CLT panels, which are often used on walls and floors and have a heavy impression, attribute a lightweight character to the roof. uenoa tops japanese office building with three-dimensional timber roof

project info:


name: synegic office building

architect: uenoa /yoshinori hasegawa, fumie horikoshi

location: tomiya city, miyagi prefecture, japan

structure engineer: holzstr +KMC

landscape designer: SFG landscape architects

built area: 580 m²

total floor area: 900 m²

number of floors: 2 floors above ground

structure: wooden (CLT)

    have something to add? share your thoughts in our comments section below.
    all comments are reviewed for the purposes of moderation before publishing.

    comments policy
    LOG IN
    designboom's comment policy guidelines
    generally speaking, if we publish something, it's because we're genuinely interested in the subject. we hope you'll share this interest and if you know even more about it, please share! our goal in the discussion threads is to have good conversation and we prefer constructive opinions. we and our readers have fun with entertaining ones. designboom welcomes alerts about typos, incorrect names, and the like.
    the correction is at the discretion of the post editor and may not happen immediately.

    what if you disagree with what we or another commenter has to say?
    let's hear it! but please understand that offensive, inappropriate, or just plain annoying comments may be deleted or shortened.

    - please do not make racist, sexist, anti-semitic, homophobic or otherwise offensive comments.
    - please don't personally insult the writers or your fellow commenters.
    - please avoid using offensive words, replacing a few letters with asterisks is not a valid workaround.
    - please don't include your website or e-mail address in your comments for the purpose of self-promotion.
    - please respect jury verdicts and do not discuss offensively on the competition results
    (there is only one fist prize, and designboom usually asks renown professionals to help us to promote talent.
    in addition to the awarded designs, we do feel that almost all deserve our attention, that is why we publish
    the best 100-200 entries too.)

    a link is allowed in comments as long as they add value in the form of information, images, humor, etc. (links to the front page of your personal blog or website are not okay). unwelcome links (to commercial products or services of others, offensive material etc. ) will be redacted. and, ... yes, spam gets banned. no, we do not post fake comments.


    a diverse digital database that acts as a valuable guide in gaining insight and information about a product directly from the manufacturer, and serves as a rich reference point in developing a project or scheme.

    architecture news

    keep up with our daily and weekly stories
    502,528 subscribers
    - see sample
    - see sample