Work on bolt groups

11.3.1. Delete completely / individually

With the help of the function Delete connection in the menu Connection you can either delete individual connecting elements from a connection picture or eliminate a connecting picture

By choosing the option Connection unit you can delete a connected connecting picture. Here, you only need to pick an element of the picture and confirm your selection..

If you choose the option Single element, you can delete individual connecting elements from a bolt picture in any view. Only the picked elements will be deleted and the new connecting picture will be represented.

Note: If you delete e.g. a single member from a bolted connection (e.g. filler plates in a bolt picture), the bolt picture including holes in that member, but as well in all other existing members will be deleted.

11.3.2. Move

The function Bolt: Move in the menu (Connection) Tools refers to the moving of individual bolts in a bolt picture. First of all, change in a view where you can see the bolt picture with the viewing direction in or against the bolt direction of the bolts. By activating the function, first of all, the dialog box for entering relative dimension for moving will appear automatically. After en-tering the dimensions you can pick one or several bolts. The moving will then be carried out with the specified dimensions relatively to the original position:

11.3.3. New length calculation

With the function Bolt: New length calculation in the menu (Connection) Tools you can cal-culate again a selected bolt. Here, you have no possibility to apply a bolt of another type. One possible application of this function is e.g. to integrate new connecting members into a bolt pic-ture.

In the following example we create a point of roofridge whose ridge plates will be connected with bolts (in a bolt picture).

Afterwards we will apply filler plates which require a new calculation of the bolt picture.

After activating the function, we will carry out the following entries in the dialog box:

Direction shall be maintained Length shall be maintained

Admit that various bolt pic-tures will be created

Connection partners shall be searched automatically

The result of the new calculation is as follows:

11.3.4. Exchange

With the function Bolt: Exchange you can later modify bolt connections. If the function is acti-vated, you can load the corresponding dialog box by clicking your right mouse button. Here you can make your indication with regard to the bolt type to replace the previous bolt picture. After completing your indications you leave the box with OK and pick the corresponding bolt picture.

The previous picture will be replaced by the new bolt picture.

Example: Bolted connection MSH at IPE profile

Using the following example (fixing of a MSH profile alongside a longitudinal wall at an existing frame support) we will present various possibilities of the function. Both members, a support IPE360 and a bolt MSH100*100*4 will be connected with each other one after the other in dif-ferent ways. The initial situation is as follows:

Alternative 1: MSH+tubes long/rest short material length

In bocad you can connect profiles by a bolt with a long material length. Normally, you need long material lengths if a bolt shall penetrate completely a profile, in this example, a MSH pro-file.

First of all select the function Connection > Bolts/studs/Loose/ … in the menu Connection.

MSH 100*100*4

IPE 360

Open the dialog box of the function by clicking your right mouse button and carry out the follo-wing settings: .

Click the button Designation in order to get a survey concerning the corresponding diameters:

In the opening window you can select a bolt with the corresponding diameter. This bolt has a length. This length, however, will also be maintained if it is not sufficient or too long.

Alternatively, you can also do without indi-cation of a length. For doing that, activate the option Bolts only created if existing in database. In this case the required bolt length will be calculated automatically and the next bolt with sufficient length will be selected from the database.

Then you must still modify the bolt length in the dialog box Bolts/studs/Loose/… For doing that, select the entry RHS&CHS long/rest short from the selection list Bolt length.

Here, it is also important to activate the option Bolts only created if existing in database. If you did not indicate the length when entering the bolt and if you want to create the bolt even if it does not exist in the database, the material length will be calculated automatically with this setting and the bolt will be generated with the correct length.

Select bolt type SKG ...

... and close bolt list

The dialog box should now be represented as follows:

After confirming the dialog box with OK pick now the bolt point in front view on the longitudinal wall:

Then you must only pick the two members to be bolted. Here you must not observe any order.

The bolt direction of the bolt is from the exterior, i.e. into the MSH profile, when you look from the exterior on the longitudinal wall.

MSH 100*100*4 IPE 360

The result of this example is as follows:

Alternative 2: Separated profiles will be connected via short material lengths

This alternative connection is based again on the initial situation of the example. The two pro-files, the support IPE360 and the bolt MSH100*100*4 shall be connected by the bolt SKG12 with short material length. In this case, however, no length will be indicated for the bolt but be calculated automatically by the program.

Concerning the bolt connectivity, an additional opening will be shouldered in the MSH profile.

In order to generate this opening, a generation of bolts with a second hole tolerance will be car-ried out. Here you have to indicate a diameter for this hole tolerance. As you can recognise from the name hole tolerance the overall diameter of the opening is composed of the bolt dia-meter and the hole tolerance. In this example the opening shall have a diadia-meter of 40 mm. If you use the bolt SKG12 you will require a second hole tolerance of 28 mm.

In addition you must indicate where you want to place the opening. Before creating the bolt an internal examination checks the correspondence of the bolt and the profile. These penetration points can be indicated as position for the second hole tolerance:

SKG 12*140

Insertion direction

First hit: In this position, the bolt hits a profile for

the first time. Second hit

the dialog box Bolts/studs/Loose/…, considering the previous demands with regard to the connection:

Similar to the first example, you must now pick the bolt point and then the members to be bolted after confirming the dialog box with OK in front view of the longitudinal wall. As a result the fol-lowing connection will be created:

Settings for the second hole to-lerance bolt without length indicati-on

Selection for short material length

Example: Stud shear connector on inclined profile

In the following example we will show how stud shear connectors can be set in a grid on an inclined support. As support we will use an IPEA400 and as stud shear connector a KOD22*125. The set bolts shall be distributed regularly on the superior flange of the bolt. The studs shall have a distance of 220 mm in direction of the support axis and a transverse distance between each other of 100 mm (studs in two rows). In order generate the grid on the flange you must first change into the top view of the inclined support. For doing that you can open Addi-tional view: Member plane in the menu View. Here, activate the top view, select as Refe-rence the setting Flange/Web surface and pick then the support.

First of all select the function Bolts/nuts … in the menu Connection. Open the dialog box of the function by clicking your right mouse button and carry out the following settings:

Activate the option Points on the tab Position in the dialog box and set Rest P1 & P2 for the grid division in the selection list. Then confirm the button Grid division. Now you can enter the division values for the bolt in the opening box (right mouse button).

used stud shear connector

button sets values of dialoge box on de-fault (i.e. ’– 1’)

generate Button Create grid division

Division measure for the thigh to be defi-ned by picked points P1 and P2 in the con-nection.

Division measure for the thigh to be defined by picked points P3 and P4 in the connection.

After leaving this box with OK you can immediately enter the origin of the grid:

After defining the origin of the grid and the points P1 to P4 you can leave the dialog window Bolts/nuts/… with OK. Now pick one of the generated grid points as bolt point and confirm the entry by pressing your return button. Then pick the support.

As a result the set bolts will now be created on the grid points:

P4 for y-direction

Origin of grid: P1 for x-direction and P3 for y-direction

P2 for x-direction