sharpsasa.blogg.se - september 2022

If you do not have the exact names in the manufacturing database these Attributes will be imported and maybe used. Tip: Click on the column headings to sort by name. Before progressing the user should note the exact names of all the specifications, materials, connectors and seams that the drawing office has used. It is also unlikely the drawing office knows the exact seam allowances, own metal allowances, etc. It should be accepted that the drawing office knows nothing about notches and when we later open the job with the manufacturers database this will be corrected.

Note the seam is unlocked.įrom the development it is also possible to see that the notch is not correct at either end. Note: C2 may have been legitimately locked as a ½ Hem Out because that end is connected to a Damper or other Plant Item. Remember this uses the drawing offices database, so the specifications, material, connectors, seams and insulation names and allowances are all unconfirmed and may be wrong. Using CAM-Duct, open the Job and arrange the Job Contents columns as shown above. The example below highlights some of the potential problems. This is the responsibility of the drawing office.Įxample: Small ESJ File passed from CAD to Manufacturing If necessary, any small straights can be deleted and the extensions on fittings stretched to fill the gaps. Because these have different lengths, this will mean deleting all the straights and using the Fill command to add new straights with the correct connectors. If this happens the CAD drawing must be edited to use TDC connectors. The drawing will need considerable re-working If the specification calls for S&D, TDC, Ductmate or sheet metal allowances the lengths of straights made on a coil line will be different. Note: If set up correctly CADmep automatically adjusts the straight lengths for connector own metal allowances. If however the manufacturer uses TDC connectors he will manufacture the Straights in 56.5" lengths. If the straights are made on a coil line and the drawing office uses Ductmate connectors then the standard straight lengths will be 60". If the drawing lengths do not reflect the standard lengths produced by the manufacturer the duct runs will not fit.

Rectangular Straight duct lengths on the drawing The drawing office exports a CAM File/Job XXX.ESJ and forwards it to the manufacturer. They achieve this goal and the drawing is approved for manufacturing. The drawing office has not spent any time understanding how ductwork is manufactured and their main objective is to draw the duct at the correct size and route it through the building. It may not reflect how the manufacturer would wish to make the duct. This format accurately reflects the ductwork that was drawn and approved.

A manufacturing file produced by the drawing office XXX.ESJ - when opened with the manufacturers CAM-Duct will use the drawing offices CADmep database.

A manufacturing file produced by the drawing office XXX.MAJ - when opened with the manufacturers CAMduct will use the manufacturers own CAMduct database.

It is possible the manufacturer could have a requirement to edit the AutoCAD drawing before producing their own manufacturing file. This requires the manufacturer to have an ACAD Licence and be proficient with AutoCAD. It is possible for the drawing office to forward the required manufacturing in the following 3 formats:

Round duct fittings: are these to be manufactured or purchased from catalogues?Īuditing the Manufacturing Files before Manufacturing.

Rectangular straights have the correct standard lengths, that the folding rules and connector names and connector adjusts are established.

Whenever possible connectors & seams are not locked on the fittings this allows the correct connectors to be picked up automatically from the specification.

The CAD/CAM connectors and seams have the same name this will allow allowances and notching data to be picked up automatically.

Establish which fittings, connectors and seams can be used, Establish Throat Radii, correct fitting extensions, etc.

The Specification/Pressure classes have the same names and contain the same size breakpoints.

The key areas to look for are as follows:

The Ductwork Manufacturers working practices.

The Project HVAC Specifications as laid down by the Consultant.

The ideal situation is that Drawing Office knows which company will manufacture the ductwork and that both parties work together before any drawings are started, this ensures that the draftsmen are using the same HVAC Database and Ductwork Items that are compatible with the following: This allows the user to export the CADmep Items within a CAD drawing into CAMduct, thus allowing the manufacture of said items. When using CADmep one of the fundamental features is the CAD to CAM option.