Archive for May, 2011

AutoCAD Plant 3D

May 31, 2011

AutoCAD Plant 3D’s View Cube

The ViewCube is a navigation tool that is displayed when you
are working in 2D model space or 3D visual style. With ViewCube tool, you can
switch between standard and isometric views.

The ViewCube tools is a persistent, clickable and drag gable
interface that you use to switch between standard and isometric views of your
model. When you display the ViewCube tool, it is shown in one of the corners of
the window over the model in an active state. The ViewCube tool provides visual
feedback about the current viewport of the model as view changes occur. When the
cursor is positioned over the ViewCube tool, it becomes active. You can drag or
click the ViewCube, switch to one of the Available preset views, roll the
current view, or change to the Home view of the model.

The ViewCube tool is displayed in one of two states:
inactive and active

Inactive= appears partially

Active= it is opaque and may obscure the view.

In addition to controlling the inactive opacity level of the
ViewCube tool, you can also control the following properties for the ViewCube

Size, Position, Display of the UCS menu, Default orientation
and the Compass display

Next time

Project Manager

Atilio Zelaya

Total Cad Systems Inc.

Piping & Instrumentation Diagram Series

May 31, 2011

Vents and Drains

Vents and drains on high and low points of lines
respectively, to be used for hydrostatic testing, are not shown, as they are
established on the piping arrangements drawings. Process vents and drains are

Valves on the P&ID
1. Show and tag process and service valves with
size and identifying number if applicable. Give pressure rating if different from
line specification.

2. Indicate any valve that have to be locked open
or locked closed.

3. Indicate powered operators.

Next time

Showing Instrumentation on the P&ID

Atilio Zelaya

Total Cad Systems Inc.

Plant Construction Series

May 31, 2011

Iron and Pipe Sizes
Initially established for wrought-iron pipe with wall thicknesses designated by the term ‘Standard
(Weight)’, ‘extra strong’, and ‘double extra strong’. Before the schedule
number scheme for steel pipe was first published by the American Standards
Association in 1935, the iron pipe size were modified for steel pipe by
slightly decreasing the wall thicknesses (leaving the outside diameter
constant) so that the weight per foot (lb/ft) equaled the iron pipe weights.

Wrought-Iron pipe (not longer made) has been completely
supplanted by steel pipe, but schedule numbers, intended to supplant iron pipe designations
did not. Users continued to specify pipe in iron size terms, and as the mills
responded, these terms are included in ANSI standard B36.10M for steel pipe. Schedule
numbers were introduce to establish pipe wall thicknesses by formula, but as
wall thicknesses in common use continued to depart from those proposed by the scheme,
schedule numbers now identify wall thicknesses of pipe in the different nominal
sizes as ANSI B36.10M states “as a convenient designation system for use in

Stainless-Steel Sizes

American National Standard B38.19 established a range of
thin-walled sizes for stainless-steel pipe, identified by schedules 5S and 10S.

Next time

Materials for Pipe

Atilio Zelaya

Total Cad Systems Inc.

2012 Rollout Event

May 26, 2011

Yesterday was our 2012 Rollout Event and 10 year anniversary for holding these rollout events.

We had a great turn-out.

We here at Total CAD System’s, would like to thank each and every one of you for taking the time to come out and join us for this once a year event.

We hope you learned some new things and had fun doing it.  Please let us know how we did by emailing us or commenting here on how we can improve our events and/or what you liked and disliked. 

Thanks again and we hope to see you for the 2013 rollout next year.