Sommer Informatik GmbH


83026 Rosenheim

Tel.   08031 / 24881

Fax   08031 / 24882




















1        Import database GlasGlobal v2.5 (projects, users) 4

2        Toolbar. 5

3        Project data. 6

4        Navigation - processes. 6

5        Specifications. 6

5.1          Characteristic strength. 7

5.2          Limit of deflection. 8

5.3          Impact. 9

5.4          Country setting for wind and snow load.. 9

6        Project details. 10

7        Geometry. 11

7.1          Pane. 11

7.2          Installation angle. 11

7.3          Shape(geometry) 12

7.4          Support. 12

7.5          Measures. 12

7.6          Geometry in module Point fixing.. 13

7.6.1      Standard editor 13

7.6.2      Expert editor with clamp mounting. 15

7.7          Geometry in the module Walk on. 18

7.7.1      Standard editor 18

7.7.2      Expert editor 19

7.8          Membrane stress. 19

8        Define structure - product. 20

8.1          Define pane. 21

8.1.1      Type of glass. 21

8.1.2      Single glazing. 21

8.1.3      LSG.. 22

8.1.4      Basis glass. 23

8.2          Define gap. 25

8.3          Search product. 26

8.4          Save structure as product (only admin) 26

9        Securing glazing.. 27

9.1          Category A. 27

9.2          Category B. 28

9.2.1      Restrictions. 28

9.2.2      Proof failure element 28

9.3          Category C1. 29

9.4          Category C2. 30

9.5          Category C3. 30

9.6          Proof of shock resistance. 31

9.6.1      Tabular method (DIN 18008-4, attachment B) 31

9.6.2      Simplified verification procedure (DIN 18008-4, attachment C.2) 32

10      Wind load and snow load. 32

10.1        General. 32

10.1.1         Wind loads according to EN 1991-1-4. 32

10.1.2         Snow loads according to EN 1991-1-3. 33

10.1.3         Wind- and Snow load in module Walk on. 35

10.2        Open module. 35

10.3        Installation place. 35

10.3.1         Load influence area. 35

10.3.2         Location information. 36

10.3.3         Terrain categories. 38

10.3.4         Snow load zones. 39

10.4        Buildings. 40

10.5        Unit/roof. 40

10.6        Add-On Porch. 42

10.7        Analysis. 43

10.7.1         Manual input 44

10.7.2         Superposition wind outside and inside. 44

11      Climate stress. 46

12      Altitude. 47

13      Uniform load. 48

14      Payload. 49

15      Load case combinations. 50

15.1        Load case glass break. 51

15.2        North German lowlands. 52

16      Result. 52

17      String shortening.. 56

18      Proposal module. 57

18.1        Glass thicknesses. 57

18.2        Size of Matrix. 57

19      FEM graphic interface. 58

20      Project management. 60

20.1        Change building project. 61

20.2        Change project. 61

20.3        Generate new position. 61

20.4        Copy current position. 61

20.5        Delete position. 62

20.6        Rename project. 62

20.7        New building project. 62

21      Sign rules. 63

22      Links. 64





1         Import database GlasGlobal v2.5 (projects, users)


To undertake projects and users from GlasGlobal (v2.5) to SommerGlobal (v7.0), proceed as follows, whereby the procedure only must be made once:

1.    Menu “Project” -> “Import database GlasGlobal v2.5 (projects, users)”

2.    Selection of the old database of GlasGlobal:


3.    “OK” starts the import. After terminating the process, you receive a prompt about the number of the imported datasets. Already existing projects resp. users will be ignored.


2         Toolbar



Functions (from the left to the right)


Clears the canvas and creates a new position, that is added tothe recent building project


Opens the project search


Saves the recent project including PDF as proof


Prints the displayed report

PDF export

Exports the displayed report as PDF


Accomplishes the calculation

First step

Goes back to the project details

Step back

Next step

Previous processing step

Next processing step

Last step

Goes to the result


Activates this help


Quits the editor and saves the recent project



3         Project data


The project’s specifications are made here.

Projects are summarized per building project.




4         Navigation - processes


With a click in the navigation bar you get to the particular processes.



     Display of the subentries of the particular process

      Display all subentries

      Display only gists




5         Specifications


Menu „settings“ŕ “Specifications”opens a window for the definition of Specifications.


The displayed specifications pertain the user. The change of the user saves the settings for the particular user.


Resets the specifications to default.


5.1       Characteristic strength



Values, which are not regulated in the standard, are marked with *.




5.2       Limit of deflection



Zero means that the deflection is not relevant for the proof.



5.3       Impact



Here you can change factors of modification of the loads. They are preset with the values showed above.

5.4       Country setting for wind and snow load



For the determination of the wind and snow loads the settings of the defined country are used. The same is for the postcode register for the determination of sea levels, wind and snow load zones.





6         Project details



The deposited data appears in the heading of the proof:



7         Geometry




7.1       Pane


Number of panes.

The setting can also be modified under „product“:


7.2       Installation angle


Horizontal glazing             Angle 0° to 79°

                                               Walk On glazing only for horizontal angles

Vertical glazing                  Angle 80° to 100°

Securing glazing and distributed load are only available for vertical glazing.

Overhang                             Angle 101° to 180°


7.3       Shape(geometry)


Shape of the glass


Please note


7.4       Support


Type of support


Please note


7.5       Measures


Depending on the form the different dimensions have to be quoted in mm.




7.6       Geometry in module Point fixing

7.6.1 Standard editor



In module Point fixing the number and position of the plate or clamp holders can be determined. Therefore is a standard input editor and an expert editor available.
Installation angle, geometry, support and dimensions may be changed as described in chapter 7.2 to 7.5. For calculating a point-fixed disc, only single glazing is possible, which will be explained more detailed in chapter 8.
For the simple, symmetrical arrangement of plate holder in the disk, the number of holders will be selected from the list, and the distance (ex and ey) of the plate holder to the glass edge in X and Y direction can be set.


With the symbol  following window will appear:


The characteristics of the intermediate layer, marked yellow in the image, can be changed under support condition glass. As input can be changed modulus of elasticity, and thickness the material. These fields are preset with experience values.
The support conditions point fixing refers to the characteristics of the point holder. The diameter of the bore and the clamping plate often differs from the default values. The input fields cz,x,y contain the spring stiffness of the point fixing.


7.6.2 Expert editor with clamp mounting



The Expert editor is separated in four parts:

1.    Installation angle

2.    Polygon

3.    Storage

4.    Point fixing


For 1. ŕ The angle of installation can be set here

For 2. ŕ Geometry of the glazing is defined here by the coordinates of the corners

For 3. ŕ Here you can choose the support of the glazing between free, clamped and fixed

For 4. ŕ Point fixings can be added with the icons, or by defining the coordinates of the drill holes. The point fixings can be put positioned at any place

New corners or point fixings can be added with the symbol

To delete any position, press      


Clamp mountings can be added with the button  (next to the field Storage).

Following window will be opened:

By selecting the sides top, bottom, left and right, clamps can be added on the glass edge. They will appear in the sketch. In the box e [mm], the distance of the clamp holder to the glass edge is defined. The number of clamp holder on one side can be changed via the arrow symbols. The distance of the clamp holder is displayed in the column Distance.


The geometry of the clamp holder can be changed with the symbol  in following window:

Input values here are:

dE = thickness of the interlayer from glass and clamp holder

E = E-modulus of the interlayer

a = length of glass in the clamp

b = length of the clamp holder


After you submit the clamp mounting, they will be added to the glazing.

The rim is divided into sections, and the support of the parts is set automatically. In the field Polygon you can see the coordinates of the coordinates, where the mounting changes.

7.7       Geometry in the module Walk on

7.7.1 Standard editor


The disk assembly may according to DIN 18008 part 5 consist only of VSG with at least three layers of glass. Therefore under disc is only single glazing adjustable.
As installation brackets are values from 0 ° -79 ° for selection.
Geometry and storage are selected from the list, and the dimension is entered in millimeters.


7.7.2 Expert editor

In the expert editor, the geometry of the glazing can be entered with the coordinates of the corners.
The sides can be supported individually (fixed, free, clamped).



7.8       Membrane stress



The calculation with membrane stress is only available under the following requirements and approved according to DIN 18008-1:

·         Addon „membrane stress“ was activated

·         Shaperectangle

·         Four-sided support

·         No taking into account shear couplingwithlaminated safety glass


The consideration of the membrane stress is quoted in the proof::



8         Define structure - product




Single glazing, doubleand triple insulating glazing


Edit of the marked layer (glass or GD)

Alternatively double-click on the line in list or the layer in the drawing


Search predefined products.

On choosing a product the whole structure will be replaced.

See chapter „8.3Search product“


Saves recent structure as product

See chapter “8.4Save structure as product (only admin)


By right-clicking on a layer of the drawing you get this context menu.

The menu entries correspond to the points described above.

Additionally there is the possibility to modify the thickness of the marked glass resp. GDs by choosing the feature „change thickness“, whereby the new thickness can be typed in directly:


8.1       Define pane




8.1.1 Type of glass



Set the type of glass here.

For laminated security glass only float, TSG (float) and TVG are available.



8.1.2 Single glazing




Specification of the thickness in mm


8.1.3 LSG   LSG symmetric




Specification of the thickness for the single glazing panes in mm


Thickness and type of interlayer


Number of glass panes and the consequent LSG structure


Substitute thicknesses for the calculation of the deflection (dw*) and the stress (ds*)   LSG asymmetric


With the new FEM-calculation it is possible to calculate asymmetric multilayer safety glass. The glazing can be made of max. 8 glass panes.


Therefore you just have to set the material and its thickness:

You can consider a shear coupling with asymmetric LSG, too. The thickness of the glass pane can be different by the factor 1.7 according to the standard. Otherwise the Thickness factor will be displayed red but a calculation is possible   Shear coupling at LSG


When the hook is set, the specification of the shear coupling of the interlayer in N/mm˛ can be made.



·         Only rectangle

·         No membrane stress

·         Number LSG panes =2 in module Standard and Fall protection

·         Up to 8 glass panes when calculating symmeric LSG

·         For FEM-calculation:  8 glass panes with asymmetric structure possible


Please note

·      Additional to “total bond” and “without bond” the LSG will be calculated “with Schubmodul”.

·      The calculation “with Schubmodul” has no influence on the results of verification (OK, stress/deflection too big).

č In individual cases the user has to decide, if a fulfilled proof “with Schubmodul” replaces a not fulfilled proof „without bond“.










Output at the proof:




8.1.4 Basis glass


The basis glass functions among other things as definition of the producer.

At it the spectral data of the quoted basis glass will be used.



       Refreshes search result in accordance with justified filter

     Resets filter and refreshes search result

        Deletes marked basis glass (only user-defined, only admin)

      Edit basis glass (only user-defined, only admin)

      Define new basis glass. The input will be made with the following interface:



            Spectral data SLT

Link to existing basis glass, whose spectral data is supposed to be used for a later calculation in the SLT module.


Type of glass preallocation

The type of glass will be preallocated with the value defined here on choice of this basis glass.



8.2       Define gap



Thickness GD in mm


Choice of the gas from predefined mixtures of gases


Height of the secondary seal in mm


This specification has no influence on the proof and acts only as an information.


For the calculation in the module WinUw the spacer settled here will be used.




8.3       Search product



       Refreshes search result in accordance with appointed filter

     Resets filter and refreshes search result

        Deletes marked product (only user-defined, only admin)

      Edit of the product data (only user-defined, only admin)

Replaces recent structure with marked product.



8.4       Save structure as product (only admin)


Using this feature the recent structure can be saved as a product.




Product is available under SLT



Product is available under GlasGlobal



Clear specific value for the product. Is specified by the program.


9         Securing glazing


Here the specifications for the proof of securing glazing will be made according to DIN 18008-4.

The chosen category appears on the first page of the proof:





9.1       Category A





1.    Single glazing has to consist of laminated security glass.

2.    For the impact side (attack side) of insulating glass units it is only admitted to use laminated security glass, toughened glass or laminated glass consisting of toughened glass.

3.    Generally at least one pane of an insulating glass unit has to consist of laminated security glass.

4.    Insulating glass units with toughened glass at the attack side may contain roughly breaking types of glass (e.g. float glass) immediately behind this pane, if there does not occur a breakage of glass of the attack sided toughened glass pane at the pendulum impact test.

9.2       Category B




9.2.1 Restrictions


1.    Only laminated security glass usable

2.    Only single panes

3.    Support is always “clamped below“



9.2.2 Proof failure element


According to DIN 18008-4, 6.1.2 for category B the failure of a random element of the glass balustrades has to be additionally proved.


Please note:

·      γmfrom specifications

·      fkwith taking into account factors IAW DIN 18008-1, 8.3.8 and 8.3.9

·      γG/Q = 1

·      Laminated security glass is calculated without bond

·      Only loading case distributed load will be proved



At the protected edges only the failure of a laminated security glass layer has to be proved. The proof of the remaining laminated security glass layer(s) will be accomplished with the quoted distributed load.



At the unprotected edges the failure of the whole element has to be proved.

·         The neighboring pane, that must also carry the additional load resulting from the failure, has the same structure

·         Proof for an efficient width beff= 0,5 m

·         Proof with additional load qz = distributed load * widthfailure / beff



Neighboring element has to carry whole failure load

q(Proof) = qz * (1 + widthfailure/ beff)



Neighboring element has to carry only half the failure load

q(Proof) = qz * (1 + widthfailure/ (2 * beff))




9.3       Category C1






1.  Only laminated security glass usable

2.  Only single panes

9.4       Category C2





1.  All single glazinghas to be accomplished with laminated security glass.Differing herefrom four-sided linear stored single glazing of the category C2 may be accomplished with toughened glass, too.

2.  For insulating glass units of the category C2 for the impact side only laminated security glass, toughened glass or laminated glass consisting of toughened glass has to be used.


9.5       Category C3




1.  All single glazinghas to be accomplished with laminated security glass.

2.  For glazing of the category C3 concerning the usable glass products the requirements of category A pertain.


9.6       Proof of shock resistance


For the proof of the shock resistance the following procedure pertains:

1.  Proof according to DIN 18008-4, attachment B

2.  Proof according to DIN 18008-4, attachment C.2, if attachment B is not fulfilled

3.  If neither attachment B nor C.2 are fulfilled, an appropriate hint will be madeunder the result:




9.6.1 Tabular method (DIN 18008-4, attachment B)



·      Geometry is inside of the admissible deviation of rectangular shape according to attachment B

·      Min GD = 12mm

·      Max GD = 20 mm

·      No enameling

·      The structure suits the values in DIN 18008-4, table B.1


Please note:

Please remember that the direction from attack to crash side is defined by the setting according to „distributed load“:



Output at the editor:



Output at the proof:






9.6.2 Simplified verification procedure (DIN 18008-4, attachment C.2)



·      Geometry is inside of the admissible deviation from rectangular shape to attachment B

·      Min GD = 12mm

·      Only two-, three- and four-sided support -> not possible for category B

·      Glass thicknesses: min. 1 x 6 mm, max. 2 x 19 mm

·      Four-sided: maximal b = 2,0 m; h = 4,0 m

·      Two-/three-sided: only cat. C, min. b = 0,7m; max. b = h = 2,0 m


Please note:

·      γG/Q = 1

·      Rd = kmod * fk / γm

fkwithout taking into account factorsIAW DIN 18008-1, 8.3.8 and 8.3.9

kmodfrom table C.1 (DIN 18008-4)

γm = 1

·      Laminated security glass will be calculated with total bond

·      Proof of load capacity with point load P = 8,5 kN on an area of 20 x 20 cm in slab middle



Output at the editor:



Output at the proof (result, 1.side):



Output at the proof (after the loading cases, last side):





10      Wind load and snow load

10.1   General

10.1.1 Wind loads according to EN 1991-1-4


Please note:

·         Restriction to building up to a maximal height of 300 m and vibratory buildings (up to a height of 25 m (generally not prone to vibrations)

·         Transgression probability: 2 %

·         Return period: 50 years



·         Geographic situation (wind zone), terrain conditions (terrain category) and wind velocity

·         Layout of the building

·         Height of the building

·         Location of the subarea in the building

·         Wind direction

·         Opening in the building


Wind load

 in kN/m˛

With:    =    wind load in kN/m˛

 =   aerodynamic coefficient (Depending on: area of the unit, location of the unit in the building, relation between height and depth of the building downwind, roof pitch, wind direction)

 =     Dynamic pressure (Depending on: wind zone, terrain category, datum level)

 =      Datum level (Depending on: Relation between height and width of the building across the wind direction, installation height of the unit)



10.1.2 Snow loads according to EN 1991-1-3


Please note:

·         Counts for edificial constructions, generally up to 1500 m above sea level

·         Transgression probability: 2 %

·         Return period: 50 years




·         Place with the local clime and the topographic height

·         Construction geometry


Snow load:

With:    =   Snow load in kN/m˛

 = Shape parameter of the snow load (Describes the relation between the amount of snow on top of the roof and the fallen amount of snow)

 = characteristic value of the snow load on the ground in kN/m˛


10.1.3 Wind- and Snow load in module Walk on


Calculations in de module GlasGlobal Walk on do not consider wind or snow loads for the calculation.


10.2   Open module


The invocation is made in the tree with “wind- /           snow-load”:



Please note:

The in the following described features are only available, if the Addon “wind- / snow-load” has been activated. Otherwise the functionality is limited to a manual input of the resulting wind and snow loads.



10.3   Installation place




10.3.1 Load influence area


The load influence area A will be preallocated corresponding to the glass dimensions typed in under “Geometry”.


DIN EN 1991-1-4, 7.2.1

The external pressure coefficients cpefor buildings and sections of buildings depend on the size of the load influence area A. They will be quoted in the decisive tables for load influence areasfrom 1 m˛ and from 10 m˛ as cpe,1 resp. cpe,10 that correspond to the building form.



For 1 m˛ < A < 10 m˛ is valid:

cpe = cpe,1 - (cpe,1 -cpe,10) log10 A



10.3.2 Location information


Sets street, post code and city from the project details and subsequently retrieves the related data in the location information.


Opens the post code register. At it, wind zone, snow load zone, local altitude above sea level and indicators for North German Plain will be detected.



Retrieves the quoted address with Google Maps


Displays the quoted address with Google Earth.

Requirement is the installation of Google Earth.

In Google Earth the local altitude above sea level can be read:



10.3.3 Terrain categories


Terrain category I

High seas; Seas with at least 5 km free area downwind; smooth flat land without obstacles




Terrain category II

Terrain with hedges, single homesteads, houses or trees, like e.g. agricultural territory




Terrain category III

Suburbs, industrial or commercial area; woods




Terrain category IV

Urban areas, where at least 15 % of the surface is built on with buildings, whose average height transgresses

15 m




10.3.4 Snow load zones


Opens map to the manual choice of the snow load zone:




10.4   Buildings



Building dimensions

Determination the building dimensions


Internal pressure

The internal pressure will only be considered, if it is a hall-like building. Please quote the amount of apertures on the walls 1 to 4 each time under “Wall open”.

With “Opening height Zi” you quote the reference height for the calculation of the internal pressure.

When you choose “Hall-like building”,there appears an additional result window for the internal pressure on the tab “Analysis”.



10.5   Unit/roof





Here you choose the unit, in which the window will be built into.

The roof pitch will be equaled the installation angle from “Geometry”.


Position of installation

Position of the glazing inside the unit


Jump in height

Specifications to the determination of the snow load at jumps in height at roofs according to DIN EN 1991-1-4, 5.3.6.


b1        Width tall part of the building

b2        Width low part of the building

b3        Width of the load from that the snow can slip down to the low part of the building

hH          Height of the height difference

αH        Roof pitch of the taller part of the building

ls          Length of the drifting

            ls = 2 * hH

            whereby 5 ls≤ 15 m

µ1        = 0,8

µs           Shape parameter for slipping snow

µw        Shape parameter for snow taking account of wind


µ2           = µs + µw



αH≤ 15°:

            µs = 0

αH> 15°:

µshas to be calculated by means of an additional load of 50% of the largest entire snow load on the bordering roof pitch of the upper roof area. This entire snow load will be steadily set with µ1 = 0,8, also for roof pitches >30°, so that there will not be calculated a load, where several parts of the snow load are already slipped down.

It is accordingly clear:         0,5 * b3 * 0,8 * sK  = 0,5 * µs * sK * ls

And herefrom:                     µs = 0,8 * b3 / ls         


Calculating µw

HH 0,5 m

            µw = 0

HH> 0,5 m     

µw = (b1 + b2) / 2hH≤  2hH / sK - µs


Margin µ2

Generally:                 0,8 ≤µ2≤ 2,4

For b2 ≤ 3 m:             0,8 ≤µ2≤ 2

For sK > 3,0 kN/m˛:   1,2 ≤µ2≤ 6,45 / sK0,9

North Ger. Plain      2,3 * µ2≤ 4  which indicates  µ2≤ 1,74


10.6   Add-On Porch


In this add-on canopies/porches according to DIN EN 1991-1-4 / NA, Attachment NA.V can be calculated.

To obtain the maximum wind load with a canopy, the edge distance must be set ux= 0.
The calculated wind load is independent of the wind direction and is equal for all wind directions.
Intermediate values in DIN EN 1991-1-4 / NA, Table NA.V for the proportion between hv / h and hv / dv (upward load) are interpolated


To determine the snow load, the height difference can be considered.


10.7   Analysis



The parameters for the wind and snow loads will be summarized here.



si = µ * sk                  quotes the value for the snow load on the roof

si*cos˛a                     snow load on the roof multiplied with the cos˛afor considering the effective snow load of the roof



Resulting loads for the loading cases pressure and suction


10.7.1 Manual input



When the hooks at “Manual input” are set according to the foregoing values, the snow and wind loads can be typed in manually.



10.7.2 Superposition wind outside and inside


The superposition of outside and inside will be made according to following schema:



1.  Loading case pressure

    1. Determination maximal pressure outside
    2. Determination related suction inside


2.  Loading case suction

    1. Determination maximal suction outside
    2. Determination related pressure inside


Output at “Experts term”, example double:





11      Climate stress



Without particular specifications there have to be used the default values.


12      Altitude




No loads


Default attributes

Without knowing the production amount and installation height, the default attributes have to be used


Producing height known

Determination of the production height with location info or postcode


Height of installation known

Determination of the installation height with location info or postcode


Both heights known

Determination of the production amount and installation height with location info or postcode


13      Uniform load




·      Only for vertical glazing

·      Only for rectangles




·      Attack height in m

·      Load in kN/m

·      Side of the load application (inner or outer pane)











14      Payload


A definition of the payload is only necessary in the module Walk on. Here is a table in the standard (DIN EN 1991-1-1 / NA, Tab. 6.1DE), which differentiates areas is categories of using. These are:                                    

Values for payload can be changed by own values. The location, where the load attacks can also be changed.




You can look for the loads in following table:


Usage type








Accessible attic with heights up to 1.80m, not suitable as living space




Living-/Meeting room

Ceiling with enough lateral distribution of the loads, rooms and corridors in residential buildings, hotel rooms and bed rooms in hospitals




Like A2, but without enough lateral distribution of the loads




Office-/Work areas, Corridors, Hallways

Corridors in office buildings, office areas, medical practice without heavy equipment, meeting rooms, small domestic animal stable




Cellar rooms in residential buildings, corridors/kitchen in hospitals, hotels, retirement homes, treatment rooms in hospitals, surgery rooms without heavy equipment.




Like B1 and B2, but with heavy equipment




Meeting rooms,

Areas fot gathering of people

(Exeption: in A,B,D,L defined categories)

Areas with tables, e.g. kindergarten, classrooms, cafés, restaurants, reception rooms, staff rooms




Areas with fixed seating, e.g. in churches, theaters, cinemas, lecture halls, waiting rooms, congress rooms




Free passable areas, e.g. museum areas, exhibition halls, public entrance areas, hotels, corridors for areas which belong to category C1-C3




Sport- and playgrounds, e.g. dance halls, sport halls, gymnastic and fitness rooms, stages




Areas for large gathering of people, e.g. concert halls, terraces, entrance halls, stance with fixed seating




Areas with regular use because of large gathering of people, stands without fixed seating





Areas of salesrooms up to 50 m˛ area in residential and office buildings or similar




Areas in retail stores and department stores




Like D2, but with increased concentrated loads because of high storage racks




Storages, Workshops, Factories, Stables

Areas in factories/workshops1) with low or middle activity




General storage areas, libraries 




Areas in factories/workshops1) with middle or high activity




Stairs/Stair landing

Stairs and landings in residential and office buildings, medical practice without heavy equipment




All stairs and landings which are not comply with T1 and T3




Access and stairs of stands without fixed seating, which serve as escape route




Balcony, Accesses, or similar

Roof terrace, balcony, loggia



1) Payloads in factories and workshops are considered predominantly static. In individual cases, often repetitive loads are classified          

   according to the circumstances as not predominantly static loads.

2) These values are minimum values. In cases with higher loads, the higher loads apply.

3) For the transmission of loads in rooms with ceilings without adequate lateral distribution on supporting components, the specified value can de decreased by 0.5 kN / m˛.

4) With the combinations of actions, the effects of the use category of the building or building unit must be assigned.

5) If the proof of the local minimum carrying capacity is required (eg. as in components without adequate lateral distribution of loads), the proof has to be performes with the characteristic values for the concentrated load Qk without superposition qk with the area load. The area for Qk includes a square with a side length of 50 mm.





15      Load case combinations



Display of the load cases for the procedure of furnishing proof:


Adds a user-defined load case. The input will be made on the following interface:



Deletes the selected load case (only user-defined)


Edit marked load case(only user-defined)


Resets load cases to default


 (or double-click on line)

Load case Print yes/no


Sets all load cases on Print = Yes


Sets all load cases on Print = No



15.1   Load case glass break


It is possible to define an own load case to calculate the case that an upper glass pane will break in an insulated glass and the shards will lay on the pane below. The load cases for a glass break are preset. There is also the possibility to define such a load case by your own.

Therefore you have to select a load case B1 to B3:

Afterwards please click on the button  to add a new load case. A window to enter the psi-valies will be opened.

The case “break of the outer pane” (DIN 18008-2, 5.8) is an out of the ordinary load (EN 1055-100, 9.4, Gl. 15).

With Ad = own weight of the shards, following load cases (preset in GlasGlobal) are resulting (OW = own weight):


Height under 1000m


B1: OW + OW shards + snow (psi1=0.2)  [+ wind (psi2=0)]                                   kmod = middle (0.4)

B2: OW + OW shards + wind pressure (psi1=0.2)  [+ snow (psi2=0)]           kmod = short (0.7)

B3: OW + OW shards                                                                          kmod = constantly (0.25)


Height over 1000m:


B1: OW + OW shards + snow (psi1=0.5)  [+ wind (psi2=0)]                                   kmod = middle (0.4)

B2: OW + OW shards + wind pressure (psi1=0.2)  [+ snow (psi2=0.2)]        kmod = short (0.7)

B3: OW + OW shards                                                                          kmod = constantly (0.25)


15.2   North German lowlands


Another load out of the ordinary, north German lowlands, can be set in the field wind and snow load. The load cases are shown in the load case combinations with the designation “S1” – “S4”. They are added automatically. Own load cases can be add with the symbol , like described in chapter 15.1.


16      Result


Above the workspace the overall result is displayed:


The tab “Result” displays the preview of the detailed report.


The output will be made with following buttons in the toolbar:

      Output on printer

       Export as PDF file


Proof (without sketches)

Static proof including the list of the particular load cases without sketches                        



The printout shows all important data for determination of those loads, as like the resulting wind pressure, suction and snow load


Experts term - sustainability

Detailed assembly of the particular load cases for stress analysis


Experts term - usability

Detailed assembly of the particular load cases for deflection analysis



Proof (deflection sketches)

Static proof including the list of the particular load cases, each time with deflection sketch


Result detail

Overview about the particular load cases

All green lines are in the admissible area, all red lines exceed the maximally admissible values.


Proof (FEM Images)

If you calculate a project with the module Point fixing or Walk on, due to the FEM calculation, there is an additional result printout. This includes for each load case a color gradient image of stress and deflection.
On the last page of this printout is a FEM-sheet that represents the main characteristics and the generated FEM grid.


17      String shortening


Please note:

·      Will be calculated automatically

·      Specification of the load case             whereby the maximal deflection and therefore the maximal string shortening occurs.

·      max. string shortening = 8 * fmax˛ / (3 * supporting width)


Output at the proof (result, 1. site):



18      Proposal module

18.1   Glass thicknesses


Here the possible glazing thicknesses outside and inside will be detected, for whom the static proof with the recently lodged loads is fulfilled.

For LSG is the thickness of the individual disk specified.


Thicker pane preferably outside resp. on top


Both panes same thickness


Thicker pane preferably inside resp. below


Glass thicknesses, for whom the proof is not fulfilled, will not be diplayed


Take over glass thicknesses and accomplish proof



18.2   Size of Matrix


Here the results (utilization in %) for the recently lodged loads depending on width and height will be displayed.



Values <= 100% green

Values> 100% redresp. orange


Matrix for stress (load capacity)


Matrix for deflection (usability)


Colour gradient from green via orange to red


Colours only green and red


Take over dimensions and accomplish proof


Exports displayed matrix to Excel


19      FEM graphic interface


In FEM images in the navigation, you can show the results of the calculation graphically when you calculate in Point fixing or Walk on module. Therefore we choose in the navigation from the list "FEM graphics".

In the header of the graphic interface the displayed load case can be selected. You can choose between stress and deflection, and which disc you want to display.
Using the mouse wheel can rotate the graphic freely in any direction, and the deflection can be increased by any factor.

Left mouse button: rotation

Right mouse button: move the pane

Mouse wheel: zoom in/out

20      Project management


The projects will be summarized as positions for a building project.



Building Project, position and denomination correspond to the project data:


20.1   Change building project


1.     Button  in the toolbar

2.     Choice of the building project using the following interface

           Refreshes search result according to justified filter

          Resets filter and refreshes search result

            Deletes marked building project incl. all projects resp. the marked project (only admin)


3.     Confirm with OK



20.2   Change project


The change in-between the projects happens by clicking on the requested project on the list.



20.3   Generate new position


       Generates a new empty position


20.4   Copy current position


      Generates a new position as a copy of the current position



20.5   Delete position


       Deletes current position


20.6   Rename project


       Changes the denomination for the current building project for all related projects:




20.7   New building project


       Generates a new building project with quoted denomination:




21      Sign rules



22      Links


Sommer Informatik Homepage:


GlasGlobal Homepage:


FEM Grafic interface: