LOAD TRANSFER BETWEEN MULTIGIPS PARTITION WALLS AND OTHER BUILDING COMPONENTS


MultiGips partition wall can be classified as a light building partition. For comparison, a wall composed of a MultiGips panel 80 mm thick is 40 % lighter than a hollow brick wall 65 mm thick and 20 % lighter than a type 500 wall composed of blocks of aerated concrete 80 mm thick (with the two-sided layer of cement-calcareous plaster 15 mm thick taken into account in both cases).

Table 6 shows surface weights for single-layer walls and walls composed of two 80-mm-thick layers of plaster panel and a 50-mm-thick layer of mineral wool (see chapter: Acoustic Insulating Power).


Table 6.
Surface weight of walls composed of MultiGips plaster panels
 
No. Wall description Gęstość objętościowa płyt kg/m3 Ciężar powierzchniowy ściany kg/m2
1
 Wall composed of a single MultiGips panel 80 mm thick
900
72
2
 Wall composed of a single MultiGips panel 100 mm thick
900
90
810
81
3
 Wall composed of a single MultiGips panel 60 mm thick
900
54
4
 Wall composed of two 80-mm-thick layers of MultiGips panel and mineral wool 50 mm thick
900 - panels
65 - wool
148
5
 Wall composed of two 80- and 100-mm-thick layers of MultiGips panel and mineral wool 50 mm thick
900 - panels
65 - wool
154
6
 Wall composed of two 100-mm-thick layers of MultiGips panel and mineral wool 50 mm thick
900 - panels
65 - wool
160


ACCEPTABLE DIMENSIONS FOR MULTIGIPS PARTITION WALLS


The EN 12859 requirements relate only to technical parameters of plaster panels. However, there is no EN standard for partition walls composed of such panels. For the sake of this document, the requirements for partition walls composed of MultiGips plaster panels have been adopted on the basis of the DIN 4103 standard. part 2 Partition walls composed of plaster wallboards. The acceptable height and length of a wall composed of MultiGips plaster panels depends on its thickness and static structure, as well as the class of the building for which it has been designed. Two groups of buildings can be distinguished here :

Group 1 - comprises buildings where there is relatively low activity inside. This group includes apartments, hotel rooms, office buildings and hospitals,

Group 2 - comprises buildings where there is relatively high activity inside – such as schools, conference halls, trade centres, exhibitions. This group also includes all types of rooms divided by a partition wall, providing that the difference in floor level between them is higher or equal to 1.0 m.

Acceptable wall dimensions can be adopted according to the data given in tables 7, 8 and 9.

Table 7.
Acceptable height (H) for a MultiGips wall with large doorway connected with the building structure at least along its both horizontal edges (according to DIN 4103)
 
Building classification
Acceptable wall height (H) depending
on its thickness [mm]
60 mm
80 mm
100 mm
Group 1
3 500
4 500
7 000
Group 2
application
not recommended
3 500
5 000

Table 8.
Acceptable length (L) for a MultiGips wall depending on its height.
A wall with no doorway, connected with the building structure along its entire circumference (according to DIN 4103)
 
Building classification
Wall height (H) [mm]
Acceptable wall lenght (H) depending
on its thickness [mm]
60 mm
80 mm
100 mm
Grupa 1
3 000
No
limitations
No
limitations
No
limitations
3 500
4 000
8 000
4 500
application
not recommended
5 000
12 500
5 500
13 750
6 000
application
not recommended
6 500
7 000
Grupa 2
3 000
4500
No
limitations
No
limitations
3 500
application
not recommended
4 000
10 000
4 500
5 000
5 500
16 500

Table 9.
Acceptable length for a wall composed of MultiGips panels depending on its height. A wall with no doorway, connected with
the building structure along its bottom edge and both vertical edges (according to DIN 4103)
 
Building classification
Wall height (H) [mm]
Acceptable wall lenght (H) depending
on its thickness [mm]
60 mm
80 mm
100 mm
Grupa 1
1 500
2 250
2 500
2 750
2 000
2 500
3 500
3 500
2 500
3 000
4 000
4 000
3 000
3 250
4 250
4 500
3 500
3 500
4 500
5 000
4 000
application
not recommended
4 750
5 250
4 500
5 000
5 500
5 000
5 250
5 750
5 500
5 500
6 000
6 000
application
not recommended
6 000
Grupa 2
1 500
1500
2 250
2 250
2 000
application
not recommended
2 500
2 750
2 500
3 000
3 250
3 000
3 250
3 500
3 500
3 500
3 750
4 000
application
not recommended
4000


EXPANSION JOINTS


For walls longer than 8 m there should be an expansion joint installed at every 7 - 9 m. It is strongly suggested vertical expansion joints be installed at the spot where the long wall is connected to transverse walls. First the lengthwise and transverse wall corner should be built, then the slab cork elastic plate needs to be sticked, and finally the rest of the lengthwise wall may be built (fig. 4).

1 - expansion joint
2 - cork plate
3 - lengthwise wall
4 - transverse wall


REINFORCING METHODS FOR MULTIGIPS WALLS

1. WALLS OF CONSIDERABLE LENGTH


Walls whose lengths exceed the acceptable values shown in tables 7, 8 and 9 need vertical reinforcing elements to be applied. Should this be the case, the length of such a wall is defined as the distance between the spots where the reinforcing elements have been applied. Please note that transverse walls are regarded as reinforcing elements – should these be applied, there is no need to use any additional reinforcing components, and the wall length is defined as the distance between the transverse walls. Vertical reinforcing elements are usually composed of open or closed steel profiles, which are fitted to the foundation and floor with galvanized angle steel (fig. 5).

1 - galvanized angle steel, e.g. L 100x50x45, at least 2 mm thick, fitted to the foundation and floor

2 - closed steel section of rectangular section, e.g. 30x60, 40x80, 50x100, at least 2 mm thick, fitted to the angle steel 1

3 - elastic plate, e.g. made of slab cork

4 - adhesive suitable for MultiGips plaster panels

5 - MultiGips plaster panel

6 - elastic acrylic mass


In case two U-profiles are applied as the vertical post (fig. 6), the faces of the two adjacent profiles need to be spanned with a, e.g., self-threading sheet metal screw.

1 - galvanized angle steel, e.g. L 100x50x45 at least 2 mm thick, fitted to the foundation and floor

2 - galvanized U-steel section, at least 2 mm thick, fitted to the angle steel 1

3 - elastic plate, e.g. made of slab cork

4 - suitable for MultiGips plaster panels

5 - MultiGips plaster panel


Instead of vertical reinforcing elements it is also possible to apply horizontal ones to interconnect walls situated parallel to each other. The distance between the horizontal braces should not be greater than the maximum wall length described in tables 7, 8 and 9.

Fig. 7 shows how horizontal braces can be installed to walls composed of plaster panels 80 mm thick with an unbounded top edge. 80-mm U-profiles, included in the VG-ORTH offer, are placed at the top edges of the walls. The walls are braced with galvanized steel UA-profiles 2 mm thick, situated crosswise to the walls and mounted to U-profiles with fasteners such as self-threading sheet metal screws.


Fig. 7. Horizontal wall reinforcement with steel profiles

HORIZONTAL SECTION


SECTION A – A


VIEW B – B

1 - wall composed of plaster panels 80 mm thick
2 - galvanized profile U, h = 80 mm
3 - reinforced profile UA, h = 100 mm


REINFORCING METHODS FOR MULTIGIPS WALLS

1A. WALL UNDER A PURLIN


The joint connecting a MultiGips wall to a purlin should be elastic to avoid wall crack formation that otherwise might result from the purlin deflection. Wooden laths can be nailed to the purlin to provide both a frame for plaster-cardboard panel installation and a horizontal reinforcing element for the wall's top edge.


Rys. 8. Connecting a wall to a roof purlin

1 - purlin
2 - wooden lath
3 - plaster-cardboard panel
4 - mineral wool 10-20 mm thick
5 - elastic acrylic mass filling
6 - wooden lath, e.g., 50 x 50 every 40 cm
7 - MultiGips plaster panel


REINFORCING METHODS FOR MULTIGIPS WALLS

2. WALLS IN ATTICS


Partition walls in attics are not usually connected to the floor structure along their top horizontal edges. Reinforcing elements for such walls are necessary, if wall dimensions exceed the values given in table 9 (a reinforcing element is usually required if the length of a wall exceeds 4.0 m). Heavy objects, such as kitchen shelves, can be mounted to the walls, and at least one vertical edge of the wall is unbounded (is not connected to any other wall).

In all remaining cases it is acceptable to build walls with unbounded top edges, and the underslung plaster-cardboard ceiling provides an adequate reinforcing component. Walls need to be bricked up to the second level of collar ties and wall profiles of the underslung ceiling need to be mounted.


REINFORCING METHODS FOR MULTIGIPS WALLS

2A. WALLS SITUATED PERPENDICULAR TO COLLAR TIES


The top edges of walls need to be secured against the wall movement risk, e.g., by nailing wooden laths to collar ties. An elastic plate made of mineral wool needs to be applied at the intersection of the wall and collar ties.


Fig. 9. Reinforcing walls situated perpendicular to collar ties

1 - collar ties
2 - plaster-cardboard panel
3 - elastic acrylic mass filling
4 - mineral wool 10-20 mm thickm
5 - wooden lath, for instance 50 x 80 mm
6 - MultiGips plaster panel


REINFORCING METHODS FOR MULTIGIPS WALLS

2B. WALLS SITUATED PARALLELTO COLLAR TIES


The top edges of such walls can be also mounted with wooden laths, as it has been shown in fig. 10.


Fig. 10. Reinforcing walls situated parallel to collar ties

1 - collar ties
2 - MultiGips plaster panel
3 - wooden laths, for instance np. 50 x 50 mm
 
   
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