General information on the building project:

— New construction of an office building on the outskirts of Darmstadt city centre with 5 full storeys and a partial basement, without underground parking,

— LEED Platinum certification,

— Flat, uncramped, easy to walk plot,

—— BRI above ground approx. 36 740 m3, BRI underground approx. 8 030 m3,

—— GFA above ground approx. 9 500 m2, GFA underground approx. 1 770 m2,

—— Building length approx. 112 m, building width 9.50-26.70 m,

—— Building height from ground floor to OK Attica approx. 19.60 m, circumference approx. 247 m,

- basement as a white tub construction,

— reinforced concrete skeleton — construction, approx. 275 STB — columns,

— reinforced concrete slabs as flat ceilings, d= 30 cm; beams only in parts,

— flat roof with surrounding solid attics,

— special requirements for fused concrete surfaces of ceilings and walls,

— 3 solid development cores, 2 reinforced concrete — firewall dividers,

— Building: circumferring facade frame LK 3/W 06/H2; 2 cranes; external settling platforms on the 4 upper floors; crossing bridges on the ground floor.

In the course of this order, the following services are to be provided:

— PR — facades wood — aluminium on the ground floor approx. 225 m, up to 4 m height,

— ventilated vertical timber — louvred wall on the ground floor approx. 40 m height,

— 4 upper floors each approx. 250 m with parapets timber frame construction H = 90 cm, wrap-around window strips wood/wood — aluminium with opaque inserts wood H = 2.45 m,

— 3 upper floors each approx. 50 m with parapets timber frame construction H = 90 cm, wraping window strips wood/wood — aluminium with opaque inserts wood H = 2.45 m, parapet cladding aluminium partly bent for internal atrium,

— PR — façade approx. 16 m of wood/wood — aluminium in 2 levels with doors for conservatories 3rd and 4th floor,

— 3 large glass roofs/wooden structures for conservatories and atrium with circumferential curves such as façade (see special requirements), 2 of which are used for weather protection and 1 as thermal shell,

— Sandwich facades 25 m for ventilation centre,

— lamellar façade with exterior doors for technical centre on the roof,

— Circumferential outer attic and parapet cladding made of a V — cantilevering up to 2.10 m with top and bottom sheet metal trim; top pre-installation for on-site PV elements; in 5 mounting levels, approximately 130 m each,

— Ditto up to 0.80 m cantilevered with 2 — lateral sheet metal cladding without top-mounted PV elements in 5 mounting — levels of approx. 120 m each,

— Suspended sheet metal ceiling above the main entrance in the parapet cladding material, with recessed luminaires,

— Revolving drum door, 5 external doors; with high safety requirements.

In particular, the following special features must be taken into account:

In sections of 1-axis curved exterior wall surfaces on all floors (“round building corners “), including in the area of the parapets (“three-dimensionally curved sheets “) and three-dimensionally shaped transition structures between the different element depths of the parapets:

— subsequent closure of the facades in the area of the lifting platforms in the OG's and the crossing bridges in the EC,

— special glazing with F and G glass in limited areas,

— installation of parapets and windows from the inside; installation of the parapet cladding elements from the outside without scaffolding.

The following deadlines shall apply for implementation:

— start of construction shell 1.9.2021,

— completion of shell construction 18.3.2022,

— start of window and facade work planned 7.3.2022,

— closure of the openings of the platforms from approximately September 2022,

— End of window and façade work around mid-November 2022.