Sierra (.015) outdoor collection: Chairs and Couches


modular seating solutions

“Sierra enters in the urban and natural landscape in a quiet way; the idea is something silent,
but at the same time the small details, like the tubes of the legs, makes Sierra unique.”
—Natalia Rota Nodari, designer

Sierra (.015) sofa is a modular system consisting of an armrest and an ergonomic seat that can be combined in an infinite number of solutions that stimulate creativity: a single-seat armchair for private relaxation time, a two-seater sofa for a first date, or a long undulating seating layout on the seafront. The bent pipe structure with a diameter of 18mm is made of stainless steel or polyester powder coated steel tube and hot-dip galvanized steel. Ready-equipped for fastening to the ground with bolts or joined together using steel plates.

Part of the Sierra (.015) collection by by Italian designers Alberto Basagalia & Natalia Rota Nodari.

  • For use in: outdoor environment including those with extreme heat, humidity & salt water air.
  • Modular System: design custom builds utilizing brackets, modular arms & modular seats.
  • Structure: 18 mm tubular structure made of hot-dip galvanized, steel.
  • Finish: matte epoxy powder coat colors.
  • Stabilization: designed to be bolted to the ground.
  • Max weight: 2500 lb.
  • Lead time: 14 week lead time imported from Italy.
  • Warranty: 5 year warranty (even in Salt-water air environments).


  • ANSI/BIFMA X7.1-2011 (R2016) Standard Method equivalent to CDPH Standard Method v1.1-2010 (Clean Air Gold).
  • LEED – v4.1 Low Emitting Materials (Clean Air Gold).
  • Living Building Challenge (LBC) – Imperative 08 (Clean Air Gold).
  • WELL – Feature 04 – VOC Reduction (Clean Air Gold).


Modular Arm. #XSA

Modular Chair. #XSM

Club Chair. #XCLUB

Couch. #XCOUCH



  • Connecting brackets for modular builds.

    Small general fixing bracket #XB1.

    • Use to connect exterior arms to seats & seats to other seats.
    • Comes in a set of 2.
    • Anthracite finish.

    Large bracket for connecting middle arms #XB2.

    • Use to connect middle arms to seats.
    • Comes in a set of 2.
    • Anthracite finish.
  • Skate guards.

    Outdoor skate guards set of 2. #UT15

    • Skate guards prevent skaters from riding/grinding their skateboard wheels on the furniture.
    • Comes in a set of 2.
    • Polished finish.

Modular Arm. #XSA

Modular Chair. #XSM

Club Chair. #XCLUB

Couch. #XCOUCH

designed by Alberto Basaglia and Natalia Rota Nodari

Alberto Basaglia and Natalia Rota Nodari met while studying at the Politecnico of Milan where they both graduated in architecture.  Shortly after, they founded their studio, BASAGLIA ROTA NODARI.  They completed their first design project in 1999 – the Antennati collection of side tables, clothing racks and more – winning first prize in the Young & Design competition.  This was a powerful sign of much more to come.  Since then, the duo has gone on to win numerous awards and recognition in architecture, design, interior space, food and town planning projects.

These Italian designers aim to transcend the typical image of the Italian designer. The pair achieve this by capturing beauty in equal measure with the technical aspects of their creations. Their visions manifest into award-winning, lovely furniture that captivates and stands the test of time.

“Seizing the specific energies of the person we are communicating with and finding the way to enhance them through the creation of alternative visions, often complementary to that which is already exists.” This is what the duo said about themselves in 2013, during the opening of “Alternative Synergies”.

studio: BASAGLIA ROTA NODARI, Brembate di Sopra (BG), Italy

Explore the other furniture pieces in the Sierra (.015) collection. Click on one of the items below.

Single backless seat.

Custom Modular Builds.

Club chair.


Chaise lounge.

Flat Straight Benches.

Flat Curved Benches.

Straight Benches with Backrests.

Curved Benches with Backrests.


Litter Bins.

To download a model file type, simply click on the file type name.



Sierra price list 2022 pdf (1.14 MB)


Sierra brochure pdf (7.66 MB)


Sierra postcard sized flyer pdf (1.61 MB)


all symbols Sierra club chairs zip (368.44 KB)
all symbols Sierra couches zip (826.86 KB)
all symbols Sierra modular arm zip (211.53 KB)
all symbols Sierra modular armless seat zip (491.9 KB)


BIFMA LEVEL 2 certification pdf (169.11 KB)
CLEAN AIR GOLD certification pdf (176.86 KB)


Sierra skate guard assembly instructions pdf (270.18 KB)
Sierra & Tahoe assembly & installation pdf (591.34 KB)