A two-storey single-family detached home. Navigate through the 3D BIM model and download the project drawings with technical descriptions

This Focus insight on building typologies continues with the analysis of a famous two-storey single-family detached home project.
In the previous articles we have reviewed the definition of single-family detached home and provided the DWG CAD drawings of the “House of the Infinite” by Alberto Campo Baeza, a contemporary single-family detached home example.

Before starting, you can download the 3D BIM model of the project together with the Trial version of the software to open and access the model.

Here are the various drawings ready for download:

“The house is the essence of architecture: it is the first and last living space, the meeting and departure place, the environment for domesticity and memories, the interiors par excellence”

 

Download the 3D BIM model of the project (.edf file)

 

Click here to download Edificius, the architectural BIM design software

Single-family detached home project

A single-family detached home architectural project involves the design of an isolated residence normally destined to accomodate a single-family unit.

The home planning typically evisages 2 phases:

  1. a first phase, where the plani-volumetric consistency of the intervention is assessed in respect to local urban parameters and indicators, such as the building height, borders distance, the plot’s total surface and the building footprint. During this phase, it’s also a good idea to arrange the internal room distribution and their sizing according to the client’s needs and in compliance with local building codes and health regulations.
  2. a second phase, or works execution phase, where the project drawings are prepared (technical specifications, contracts, working drawings, etc) indispensable for the next phase of construction works.

The first phase involves the building envelope design, including all the architectural, structural and system installation discipline activities.

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The architectural planning generally represents a project starting point. It determines and arranges spaces, volumes and the relatives architectural elements.
Subsequently, the structural discipline aims at guaranteeing resistance and stability when the involved stresses varies.
Eventually, the system installation discipline tracks and sizes the technological systems distributed in the architectural and structural model.

The structural calculation design, more specifically, consists in assessing the construction skeleton geometry, inlucing, for instance, the sub-structure depth, columns and beams position and size.

In case of a two-storeys single-family detached home, the staircase position is determined during this phase.

After the columns and staircase positioning, the project is defined in detail, drawing internal walls so to create openings and spaces, such as doors, windows and balconies.

From a climatic point of view it is preferable to orient the building East-West (the main facades are facing North and South in this case), in order to obtain what is called “thermal gain”

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Typically, in a two-storey single-family house project, the floor plan is the same for both floors, or, possibly the upper floor is partially reduced due to the terrace. This system type is defined as a block or closed construction system.

On the contrary, in particular solutions in which there is no perfect equality and overlap between the two floor plans, we can refer to open construction system.

An intermediate solution involves the presence of a double-height living room, the services on the lower floor and the sleeping area on the upper floor.

A single-family detached home project characteristics

A first aspect to take into account when designing a house is the context while attributing quality to the living space.

Another important aspect is its functionality.

The functional set-up of the house should be established right from the start of the project.

In contempory dwellings the living area is emphasized compared to the night area, which is frequently more reduced in size.

Once the distribution structure and the main volumes of the house have been defined, it is possible to focus on the aspect.

The materials choice is fundamental at this stage since it is an element determining the house appearence together with the form and the colours. Therefore, it is part of the functional aspect as well, including technologies and construction costs.

Two-storey single-family deatached home project

To give a practical example, we have reproduced the project of a two-storey single-family detached home built in Spain, La Coma complex in Borriol.

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The plot is 18mt steep, thus having a strong impact on the whole project.

The project concept envisages the house entrance on the first level rather than on the ground floor. The aim was to build a structure in relation both with the adjacent exteriors (terraces, gardens, tracks, etc..) and the landscape. For this reason, the building is slightly sloped and provided with a better view on the valley.

The site choice is given by the characteristics of the plot (free space, direction, terrain survey, access, corners, borders, etc.) and from the owner’s preference to direct the building South-West, in relation with the future garden.

The whole project has a compact structure, volumetrically simple and attentive to the topography of the place, with materials that adapt to the landscape and to the particularly harsh summer climate.

The transition from the stone cladding to the sloping ground is solved by a leveling colored concrete wall that supports the floor structure of the kitchen and bathroom.

In addition to the wooden platforms on the upper floor, the rest of the floor is made of the same stone as the facade, although with different consistency and structure.

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The construction is built on two levels. The first floor accomodates the common areas: the living-sitting room (with double-heigth), the kitchen, the guest rooms and the bathroom, while the private rooms are located on the upper floor: library, master bedroom, bathroom and solarium. On the ground floor there are the common areas: living room-dining room (double height), kitchen, guest rooms and bathroom, while the private rooms are located on the upper floor: library, master bedroom, bathroom and solarium.

The two floors are joined by a single-ramp longitudinal staircase.

In the depandance we find the service areas: warehouse, laundry, wardrobes and service installations.

The space between the two volumes is fresh and shady during summer and leads to the house back entrance.

The house has two entrances. One of the entrances is public and located on the front of the site (S-W oriented) and you can access it through sliding glass doors that open onto the dining room. The other one is located on the back side of the building and can be reached crossing the courtyard.

The facade orientation is very important since it determines the natural lighting and the ventilation.

The inclusion of a two-storey courtyard on the N-E side allows all the service rooms to be well lit and ventilated (except the main bathroom, which overlooks the panorama) and also provides the privacy that these rooms require.

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In order to distribute sunlight at the lower-level windows facing S-W, a canopy was positioned slightly off-centered from the building.

A brise-soleil with vertical louvers, on the contrary, filters the light entering from the only opening on the north-west facade.

The solarium on the upper floor is protected by a suspended louvers system and an optional sliding panel, made with slats, on the garden side.

Click here to download Edificius, the architectural BIM design software

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