2.4. Análisis de la variable de estudio
2.4.3. Fundamentos Técnicos del Voleibol
After you create takeoff data using automatic or manual takeoff tools, it is important to review and validate the data to ensure the quality of the information.
When you create takeoff data in QTO, takeoff markup is displayed on the canvas, each measurement is recorded as an object on the Takeoff palette, and quantity and cost data is aggregated in the Workbook. All of this data is linked in a 3-way cross-reference. Therefore, when you select takeoff geometry on the canvas, the corresponding object is selected both on the Takeoff palette and in the Workbook. Similarly, when you select an object on the Takeoff palette or in the Workbook, the takeoff geometry is selected on the canvas. This 3-way visual cross-referencing of objects—on the canvas, at the project level (Takeoff palette), and at the sheet or project level (Workbook)—is designed to help you validate takeoff data.
Only items that have a measurable value display in the Workbook. Items are measurable when they have both a defined Type value (either Linear, Area, Volume, or Count) and a defined property for at least one dimension. For example, when you defined model takeoff results in an earlier exercise, you needed to specify a Length property for the Stair item when you moved it into the catalog. If you did not do this, the Stair item would not display in the Workbook. Cross-referencing items on the Takeoff palette with those in the Workbook can help you validate your data.
In this exercise, you validate takeoff data using the following methods:
• Verify that when you select an object on the Takeoff palette, the same object is selected in the Workbook and on the canvas.
• Right-click the object on the Takeoff palette, click Views, and click a view drawing on the list that displays. QTO zooms in to that object on the canvas.
• Right-click the object on the canvas, and click Locate Object. The corresponding object is selected on the Takeoff palette.
• Use the Search feature to locate all occurrences of a word or phrase, and select a specific search result to view the related takeoff data.
Validate takeoff data:
1. On the Documents palette, select Floor Plans Sheet: A101 - Entry Level & Upper Level 1. 2. If necessary, click View menu Fit to Window.
3. In the summary view of the Workbook, click the Exterior tab, and expand Exterior Windows. 4. Double-click Window, Andersen 400 C35 to view object data.
5. On the Takeoff palette, expand Exterior Exterior Windows Window, Andersen 400 C35, and select Andersen 400 C35 [75233].
6. Verify that the window is selected on the canvas and in the Workbook. Tip
Move any column (except the Description column) by selecting the column header and dragging it to a new position on the palette.
7. Click (Back) in the upper-left corner of the Workbook to return to the summary view. 8. Using the same method, continue validating takeoff data:
Open this Sheet Validate this takeoff item
Ceiling Plans Sheet: A601 - Typical Ceiling Plan
Electrical Lighting Fixtures 0600 x 1200mm (2 Lamp) - 120V M_Troffer Light - Lens [95219]
Elevations Sheet: A200 - Elevations Exterior Exterior Doors Door, Double-Glass, 1830 x 2134mm M_Double-Glass 2 [73073]
QTO Dormitory Revit 3D DWF QTO
Dormitory Model Exterior Roof Construction Warm Roof - Timber Basic Roof
Navigate to a takeoff object on the canvas:
9. On the Takeoff palette, expand Electrical Lighting Fixtures 0600 x 0600mm (2 Lamp) - 120V. 10. Right-click M_Ceiling Light - Linear Box [94414], and click Views Sheet: A601 - Typical Ceiling Plan.
QTO opens the selected view drawing, and zooms in on the selected takeoff object. 11. Click View menu Fit to Window to restore the canvas to the full view of the drawing.
Navigate to a takeoff object on the Takeoff palette:
12. On the Takeoff palette, click next to Electrical to collapse the group. 13. On the toolbar, click .
14. On the canvas, select a different light fixture, right-click, and click Locate Object. The takeoff object is selected on the Takeoff palette.
15. Notice that the Locate Object function expands groups and items as necessary to display the selected object.
You can continue to validate the takeoff data by using the Views command to navigate to objects on the canvas, or by using the Locate Object command to locate objects on the Takeoff palette. You can also use the Search function.
Search for objects:
16. In the Search text box at the upper right of the drawing window, enter wall, and press ENTER.
The Search palette opens and displays the results from sheets, models, takeoff groups, items, and objects as navigational links.
If the results are extensive, you can use the Search palette to refine them. 17. On the Documents palette, select Sheet: A200 - Elevations.
18. On the Search palette, enter basic wall, and press ENTER. The search results are filtered to show only Basic Wall results.
19. Under Objects, select the first Basic Wall link. The Search palette closes, and the object is selected on the sheet, on the Takeoff palette, and in the Workbook.
You can also open the Search palette by clicking Window menu Search. Keyword searches can help you validate takeoff data by locating all occurrences of a word or phrase throughout the entire project.