Building of 18 dwellings between party walls on Providencia Street

This promotion is the second phase of a new construction project for a multi-family building with 18 apartments, 3 commercial spaces, and parking in the basement levels, located at Providencia Street 168-174 in Barcelona, zone 13b.

The project involves the construction of a building between party walls with a ground floor, 3 upper floors, and 5 basement floors, one of the party walls is the 1st Phase already built.

Its primary use is for housing. Housing on upper floors, commercial spaces on the ground floor, and parking in basements.

The basement floors occupy the entire plot and are connected to the floors of the existing public parking, and 2 of the projected apartments per floor with access from staircase B of the already executed 1st phase. They have cross ventilation between the street-facing facade or the interior facade of the block and the ventilation and lighting patio facade.

The built ground floor occupies 30m of buildable depth, housing 2 residential lobbies and vertical communication cores. The lobby of the residential staircase known as staircase C and the core and lobby known as staircase B, already built in phase 1, and the one that provides access to 2 apartments on each floor of phase 2.

The floor plans occupy a buildable depth of 19.20m, and two ventilation and lighting courtyards have been arranged parallel to the main street and interior block facades.

The entire building is developed over 5 underground floors intended for parking; Pb+4 (on Secretari Coloma Street) and PB+3 (on Providencia Street). of the floors of the first phase.

Basement levels E, D, C, and B are designated for parking use. They have parking spaces, 4 staircases, and storage rooms.

The basement level A is designated for parking use. It has parking spaces and storage rooms. The transformer station and vehicle ramp leading to the street located in this basement have already been completed in phase 1.

On the ground floor are located the lobbies providing access to the residences, exits from the staircases of the parking floors, vehicle ramp access, and a commercial space that currently houses a Caprabo.

The floor levels are entirely designated for residential units. There are 3 ladders available between the two phases.

- Staircase A is spread over 4 floors, featuring a vertical communication core consisting of a staircase and two elevators, and has 5 apartments per floor (20 apartments in total).

- Staircase B is spread over 3 floors, featuring a vertical communication core consisting of a staircase and an elevator, and has 4 apartments per floor (12 apartments in total).

- Staircase C is spread over 3 floors, featuring a vertical communication core consisting of a staircase and an elevator, and has 4 apartments per floor (12 apartments in total).

Thus, the total number of proposed homes for the 2nd phase is 18 homes.

The functional program of the apartments consists of 2 and 3 bedrooms; the 2-bedroom apartments have a kitchen-living room-dining room and 1 or 2 bathrooms; bathrooms, kitchen, and living-dining room. The apartments located in the interior of the block have a terrace 1.50m wide, while those facing the street have a terrace 80 cm wide.

The covered floor (Providencia Street) is designated for the placement of a drying area, centralization of gas meters, upper telecommunications room, as well as the auxiliary facilities specific to the building. community pool.

The heating and domestic hot water systems for each dwelling are of the air-source heat pump type. Each dwelling has its own heat pump and an interior unit of the Hydrobox type for the production of domestic hot water, independently controlled by each dwelling.

Air-source heat pumps provide more useful energy in the form of heat than the electrical energy they consume, potentially achieving savings of up to 40% compared to a conventional heating system if used properly.

The ventilation is through a double-flow mechanical ventilation system with heat recovery, with supply and return air conducted through a duct system.

Air is supplied to each room and extracted through bathrooms and kitchens up to the roof level. This system provides comfort to air quality and energy savings through ventilation exchange.

It improves the values established in the DB HE and DB HR of the CTE by 18.75% since the building envelope has been designed to be a nearly Zero Energy Building (nZEB). The energy rating of the building is AA. A in non-renewable primary energy consumption and A in carbon dioxide emissions. This implies a minimum energy consumption of 56kWh/m2 per year.