aveva bocad tower strategy

How to deal withAveva Bocad Tower

Workflow and hints

Cdric Richard

August 2013

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Contents

3D MODEL ORGANIZATION..................................................................................................................... 3

Project subdivision .............................................................................................................................. 3

Example ........................................................................................................................................... 4

Phases ................................................................................................................................................. 6

Example ........................................................................................................................................... 7

ERECTION DRAWINGS : BOM .................................................................................................................. 8

CLASH CHECK ........................................................................................................................................ 11

LISTS ...................................................................................................................................................... 14

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3D MODEL ORGANIZATION

Project subdivision

An energy major project, including more than one single transmission tower, is always splitted into :

A basic body common for each type of the different towers to be delivered.

Few different extensions (0 m, 3 m, 6 m , ) to be connected to the basic body.

E.g. We may have to fabricate 50 basic bodies, 30 extensions of 3 m, 10 extensions of 6 m,

According to this, you should subdivide your Bocad main project into several 3D models : one for the

basic body (+ arms) and one for each extension.

Under your Bocad projects directory, create manually a directory1 with the name of your major

project (for example main_Project). Start bocad and, inside the main_project folder, create a new

project named for example grid. In this 3D model, only input the job information and create all the

basic grids for the extensions, body structures, cage and peak. As first grid, input a cube of 1000 m

symetrical to the global 0,0,0, reference point. Create the other grids using the Tower templates and

create all the phases required2. Close this project and copy its directory under new project names,

for example, basicbody , ext3m, ext9m, Open one of them and proceed.

Regarding the profiles having some connections in the basic body as well as in the extensions, create

them once in the basic body then export-import them in the extensions 3D models3. Accordingly to

where they belong to, edit their initial mark to 0 or 1.

1 Using Windows Explorer

2 See next chapter

3 Using the functions "Partial Export" and "Partial Import"

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Example

1. Create a new project named "grid" with a small cubic grid of 1000 mm symetrical to global

0,0,0 reference point. Dimensions and axis names as by default in the client2_1_Tower (T =

Transversal face, L= Longitudinal face)

2. Create all the requested grids and empty phases only.Thanks to the template CAT105, you

are able to model the grids and creating the phases in once. This project will be used as a

template for the other model. Once you are done close the project "grid".

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3. Copy the new "grid" project as much as requested by the major project (Depending on the

quantity of extensions,..). Rename each project with significant names as basicbody, ext3m,

ext9m,

4. Inside these new projects, we will build the related parts of the tower (body, extensions,).

Figure 1: basicbody model Figure 2: ext3m model Figure 3: ext9m model

5. Members having connections in basic body and extensions are created in basic body, then

they will be exported in the extensions models and their initial mark edited to 0 accordingly.

It means they will be listed in the basicbody model.

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Phases

In 5 words : one splice one new phase. The splice itself always belongs to the phase above.

The first phase should be the top of the tower then the following going down1.

In towers, the use of phases is not only a fabrication/erection purpose , they are necessary

for the BOM displayed in the erection drawings. Indeed in these drawings it is shown

only one face of the tower but quantities appearing in the BOM are corresponding to

the 4 identical faces. Furthemore, the members can appear only in one BOM2.

For BOM in erection drawings reason also, you may be obliged to subdivide one phase into

several in case of the drawings of this phase can not fit in one sheet of paper.

Regarding the bolts, since they may connect members from different phases, set the

member of your choice as their owner3.

1 See the example on next page

2 See chapter "BOM in erection drawing"

3 Using the macro EDCONO

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Example

Body 2: Phase 7 Body 1 : Phase 6

Cage : Phase 2 MXA1 : Phase 4 BXA

2 : Phase 5

Peak : Phase 1 TXA3 : Phase 3

1 Middle X ARM

2 Bottom X ARM

3 Top X ARM

3M Body extension : Phase 8

6M Body extension : Phase 9

..

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ERECTION DRAWINGS : BOM

Note that the BOM is not corresponding to what is shown or designated inside the drawing. In the

drawing we show only 1 face of the tower but in the BOM it should be listed the members of the 4

faces.

To do so, We ask the BOM on the whole project and we filter out manually which phase is the one

corresponding to the drawing we are producing the BOM for. Regarding the bolts, Bocad will select

automatically the bolts owned by the members (assemblies) selected in the BOM member list.

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This is the member filter to be applied :

Do not forget to filter out the pack washers dummy plates (numbers 9000-11000) .

In the bolt list, Filter out the pop marks and holes :

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MEMBER FAMILIES

Members families are always used to regroup some members with a common criteria to facilitate

their selection later on in the filters.

In towers , we set the members families for 2 main reasons :

Clash check between the Transversal face and the Longitudinal face .

Representation and/or not the designation of members in the plane views drawings1.

Your bocad menu configuration is set for the following families organization (for your ease always

follow the same) :

Family 1 : leg

Family 0 : longitudinal face excluding members in a floor level

Family 40 : longitudinal face members included in a floor level

Family 2 : transversal face excluding members in a floor level

Family 42 : transversal face members included in a floor level

Family 3 : floor level members not in longitudinal or transversal faces

Family 5 : 3rd face members

Note: To set in one shot the families of the T and L face, do as explained here under:

At the beginning of the project, you should create your T-face (body*side1) in the family 0 (default) ;

then, just after copying from T-face to L-face, use the command Information / Handled Members

and edit all of them to family 2.

Family 11 : arm leg between front and bottom ram faces

Family 12 : arm leg between rear and bottom ram faces

Family 13 : arm leg between front and top ram faces

Family 14 : arm leg between rear and top ram faces

Family 21 : arm front and rear face members

Family 22 : arm bottom and top face members

Family 25 : arm diagonales

1 See chapter "Plane views"

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CLASH CHECK

To check the clashes in the whole tower, you should execute the filter / Member Collision test

between the followings :

The angles family 0 , 40 with angles family 2 , 42

The angles family 3 with all family 0, 2

The angles family 11 - 14, 21, 22 with all family 0, 40

The angles family 5 with all family 0, 40, 2, 42, 3

The angles family 25 with all family 11-14, 21, 22

The angles family 21 with angles family 22

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Family 1 Family 2 Family 0


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LISTS

Because of the PACK WASHERS, which are created as bolt in a dummy plate having by default the

initial mark equal to 9000, we have to :

for the lists of bolts , include everything in the list database;

and,

for the lists of members , filter out all those piece numbers (9000-11000) .

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