hw3 hotel alberi-1

8/12/2019 Hw3 Hotel Alberi-1

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P O L I T E C N I C O D I M I L A N O

BUILDING PATHOLOGY AND DIAGNOST

case study: HOTEL ALBERI

via lungo lario Isonzo LECCO

STUDENTS:

Janaina Gerde Muniz

Gerardo Diosdado Espinosa

Marco DellOro


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CONTENTS

1. LOCATION ............................................................................................................................................ 3

2. THE BUILDING AND ITS CONSTRUCTION TECHNIQUES AND MATERIALS ............................................. 4

3. FAILURE PATTERN IDENTIFICATION ................................................................................................... 10

3.1. Exterior Degradation pattern ........................................................................................................... 10

3.2. Interior Degradation pattern ........................................................................................................... 16

4. MAPPING ........................................................................................................................................... 22


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1. LOCATION Our case study is a Hotel situated on the lakeside of Lecco. Despite of being a new building, only ten

years old,

it

presents

many

and

different

interesting

defects.


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The Hotel Alberi has been built attached at two other buildings and for this reason it has only two faades exposed: west and east faade. Its proximity to the lake also let the building exposed to humidity, therefore increasing the chances for early degradation of building components.

The building surrou nding

2. THE BUILDING AND ITS CONSTRUCTION TECHNIQUES AND MATERIALS The Hotel is composed by five floors over the ground level. In the ground floor we can find the hall of the hotel and a small dining room. Upstairs there are four floors where are located the rooms of the

guests. The last floor, the 5 th , is used by the owner's family. There is also a basement floor, used like garages and services facilities.

The buildings site


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Ground Floor Plan

First Floor Plan


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Second, Third and Fourth Floors Plan (Type floor)

Fifth Floor Plan


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Basement Floor Plan

The Hotel has been built with a typical reinforced concrete structure. According to the owners of the

building, the vertical enclosure on the external side of the EAST faade are made by hole bricks and a

rendering layer, while inside the finishing is with gypsum board and wallpaper.

Concrete Structu re Dry wall system


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East Faade

At the basement, the perimetral walls are in concrete with an insulation layer inside, and a water proof layer outside, made with asphalt and felt membranes.

On the WEST faade, which looks at the landscape of the lake, the enclosure is given by a ventilated wall, made by a layer of ceramic bricks, a layer of insulation, a layer of still air, and the finishing is made

with stone tiles, hanged at the reinforced concrete structure with metallic joints.


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West Faade

Some example of materials used in the building process of the Hotel Alberi, according to information from the owner:

- The horizontal structures are made with reinforced concrete combined with holed bricks, in

order to have a resistant but light structure.

- The vertical structures are made with reinforced concrete pillar

- The ceilings and the inside layer of the walls are made with gypsum boards, applied on a light

metallic structure. - The floors of the rooms are finished with parquet, glued at the layer below


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3. FAILURE PATTERN IDENTIFICATION

3.1. Exterior Degradation pattern

EAST FAADE Degradation pattern Degradation pattern


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EAST FAADE

Degradation pattern


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EAST FAADE

Degradation pattern Description

Chromatic alteration: Under the left bottom window there is a line presenting

chromatic alteration.

The painted central column

presents diffuse over all its

surface bleaching of the paint.

Crack missing structural joints: The center decorative column presents cracking on different places, which apparently will

eventually become loss of mass.

At the lower part of the faade are shown 3 horizontal cracks, on the whole width of the building,

and apparently situated on the

wall slab connections.

Also in the connection between the slab and the porch columns there are deeper cracks,

presenting already exfoliation on

the paint and loss of mass on the left column.


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Cracks and delamination of the painting: In correspondence with cracks and haircrack we

can see delamination of the paint, loss of mass

and, in the last picture, some blistering.


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WEST FAADE

Degradation pattern Degradation pattern


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WEST FAADE

Degradation pattern Synthetic description

Crack and chromatic alteration: As we saw on the east faade, alson this side we can see that thcentral column presents some colobleaching, diffuse along the entirsurface, in some point we caobserve an exfoliation of the painAlso on the main central column arvisible some small but diffuse cracks

Cracks missing joints:

In the first picture we can see column at the main faade

presenting

a

vertical

cracking

in

its height, and its located basically

the joints between finishing.

In the second picture of the maifaade it can be noticed again vertical crack between the differenfinishing types. The crack continuesto the second level, presenting alsloss of mass and chromaticalteration on the left side.


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BASEMENT FLOOR


Loss of mass with pulverization:

We can see a detachment of the painting and rendering leading to a pulverization of the wall. Probably caused by the humidity in the basement

floor.

Crack missing structural joints:

As seen in the picture, the cracks are only in the joints of the structural parts. These cracks were probably caused by the movement of the site while some construction works were done nearby.

Crack of the painting, pulverization and stain: By the pattern of the cracks, the stains and the

pulverization in this wall, we can say that they

were probably caused by water capillarity.


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FIRST TO FOURTH FLOOR


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FIRST TO FOURTH FLOOR


Crack and Delamination of the painting: In this case, the loss of mass appears in the shape of a crack in the painting, leading also to a delamination process.

Blistering: Case of blistering in the painting of the

gypsum ceiling, probably caused by water

capillarity.

Staining:

The ceiling surface became darker, due to iron

oxides and water etc.


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Cracks missing structural joints:

As seen

in

these

pictures,

the

cracks

are

only

in

the joints of the structural parts. These cracks are also reflected in the exterior of the building and were probably caused by the movement of

the site while some construction works were done nearby.

Cracking blistering of the wallpaper:

The crack in the wall here causes a blistering at

the wallpaper. This crack is also reflected in the outside and it was probably caused by the

movement of the site while some construction works were done nearby.


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Cracking:

Here the cracks appear in the openings of the walls, from the top to the bottom direction. These cracks were probably caused by the movement of the site while some construction

works were done nearby.


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4. MAPPING WEST FAADE


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hw3 hotel alberi-1

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