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An der Strangriede, Hannover

Description

This apartment house was constructed in Nordstadt, a district primarily characterized by Wilheminen-era constructions, on a site which had been destroyed during World War II. Connected to an existing development, it provides space for six comfortable rental apartments each with a different floor plan plus an office on the ground floor. The apartments have balconies or large roof terraces and feature open-plan living, dining, and kitchen areas with large south-facing windows. An elevator makes the apartments handicapped-accessible. The underground level has a basement plus a parking garage with eight spaces.

Parties involved

Client:

private

Design:

brinkmann

jaspers architekten

Building data

Building type:

Apartment complex

Location:

Hanover

Year of construction:

2006 - 2007

Units:

6 apartments, 1 office

Heated living space:

681 m²

Subsidies:

proKlima

Building shell

Exterior walls:

Sand-lime brick masonry and/or precast reinforced-concrete walls with 26 cm composite thermal insulation system; quality: 0.032 W/(mK); HTC = 0.12 W/(m²K)

Windows:

wood-aluminum windows, aluminium frames with pour-and-set foam, heat-insulating triple glazing, krypton filling; HTC = 0.83 W/(m²K) including installation related heat bridging

Roof:

inclined wedge atop 35.6 cm wooden lightweight beams, covered by OSB roof boarding and sealing; blown-in cellulose insulation between beams; suspended plasterboard roofing with 8 cm mineral wool insulation; HTC = 0.11 W/(m²K)

Basement Ceiling / Underground Garage:

22 cm mineral wool insulation under reinforced-concrete ceiling; floor construction with 10 cm polyurethane insulation material; quality: 0.025 W/(mK); footfall sound insulation and parquet flooring atop anhydrite floor screed; HTC = 0.09 W/(m²K)

Building technology

Ventilation:

central comfort ventilation system with heat recovery in each apartment

Heating:

central buffer storage tank with integrated condensing gas boiler combined with 22 m² flat solar panels

Air conditioning:

no active air conditioning

Measured values

AIRTIGHTNESS:

n₅₀ = 0.5 h-1

Calculated values

Calculated method: Passivhaus planning package

HEATING ENERGY NEEDS:

15 kWh/(m²a)

TOTAL ENERGY NEEDS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:

Electricity

29 kWh/(m²a)

Gas

37 kWh/(m²a)

PRIMARY ENERGY NEEDS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:

118 kWh/(m²a)

CO2 EMISSIONS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:

27 kg/(m²a)

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