Transcript Slide 1

2D/3D Take-off
Candy 2D/3D QTO
The objectives of the CCS Quantity Take-Off:
1.
2.
3.
4.
5.
Measure quantities off 2D drawings and 3D BIM models
Integrate these quantities into Candy seamlessly
Update quantities after drawing revisions
Handle Bill, Final, Actual and Claimed quantities
Provide quantities for the BOQ, Subcontract bills and Area bills
Candy 2D/3D QTO
The Candy Bill
There are two columns in the Candy
BOQ to receive quantities measured
in the take-off.
QTO Quantity1 is where the measured
quantities “land” when they are
brought back into the bill.
QTO Remarks2 records the drawing
and object for each quantity.
If there are multiple sub-quantities
against a bill item, they are displayed
as lists in these columns.
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Candy 2D/3D QTO
Copy the Bill to QTO
A copy of the bill is made available for
use in the take-off1.
This allows multiple people to be
working with the bill at any time off a
server or remotely on individual PC’s.
When take-off quantities are sent
back to the originating bill the
supervising user must accept the
‘measurers’ quantities and copy them
from the QTO column to the relevant
quantity – Bill, Final, Actual or
Claimed.
Bill items are uniquely identified so
the quantities could be retrieved back
by the bill automatically in the future.
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Candy 2D/3D QTO
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Starting the QTO
Clicking the QTO icon1 starts up the
take-off application.
This is a completely separate program
from Candy but the two are linked by
the common copy of the bill that was
created in the previous slide.
Candy 2D/3D QTO
The QTO documents
The QTO interface is divided into the
six panels shown here:
1. The bill copied from Candy.
2. A list of the drawings used in this
take-off.
3. Templates of common measurements for re-use .
4. A list of Measurement folders
5. A list of take-offs.
6. The drawing display area.
The panels can be moved anywhere
on the screen, or better still,
displayed on multiple monitors.
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Copy of the bill
2
List of Drawings used
3
List of take-off templates
4
Measurement folders
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Take-offs in each folder
Drawings are displayed here.
Each active drawing is
identified by a named tab at
the top.
Candy 2D/3D QTO
Step 1: Setting up a new QTO
A new QTO is created from the File
menu1.
A database is created which holds the
copy of the bill, any drawings used
including annotations made, all takeoff measurements, calculations and
the relationships back to the bill.
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Candy 2D/3D QTO
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Step 1: Setting up a new QTO
You need to specify where the
database is to be stored1.
Candy 2D/3D QTO
Step 2: Loading the Bill
Click on the Bill of Quantities tab1 at
the base of the document to display
the bill document.
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Candy 2D/3D QTO
Step 2: Loading the Bill
From the File menu select Import Bill
items1.
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Candy 2D/3D QTO
Step 2: Loading the Bill
The previously exported bill is now
part of this take-off and is used to
hold quantities derived from the
measurements against bill items.
Note: the ‘bill’ can be the entire BOQ,
a range of pages or selected items
from the BOQ, a Subcontract bill or an
Area. Candy knows how to collect
and update the quantities from any of
the above.
Candy 2D/3D QTO
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Step 3: Measurement folders
Measurement folders1 are used to
group like measurements together.
Here we have named the first folder
Concrete & Formwork2 – and in this
example we will be taking-off
quantities for these two trades.
A Measurement folder can extend
over multiple drawings.
Many Measurement folders can be
created and they will listed on this
tab.
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Candy 2D/3D QTO
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Step 4: Loading a drawing
Multiple drawings can be associated
with a QTO and are listed on this tab1.
From the Right click menu, select
Import Drawing2.
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Candy 2D/3D QTO
Step 4: Loading a drawing
Browse for the required drawings and
Open.
Candy 2D/3D QTO
Step 4: Loading a drawing
All drawings used for this take-off will
be recorded in this list1.
PDF drawings usually contain hidden
‘vector information’ and the Candy
QTO uses this data for better control
and features like ‘snapping’ to points.
If the PDF contains multiple ‘pages’
each page is dealt with as a separate
drawing.
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Candy 2D/3D QTO
Zooming and Scrolling
Here we have zoomed and scrolled to
the slab that will be used in this
example.
Candy 2D/3D QTO
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Calibrating
Before any measurement can be done
on a drawing, the scale must be
calibrated.
Select the Calibrate tool1 to start
this process.
Candy 2D/3D QTO
Calibrating
Move the Calibrate tool (and the
cross-hairs) to the start of a known
dimension1 and click to start the
calibration….
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Candy 2D/3D QTO
Calibrating
…and click on the end point1.
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Candy 2D/3D QTO
Calibrating
Enter the length of the known
dimension1. The scale of this drawing
is now established.
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Candy 2D/3D QTO
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Measuring tools
The other measuring tools are:
1. Number - for counting
2. Line - for ‘polylines’
3. Polygon - odd shaped areas
4. Arc - curved areas
5. Ellipse – to be added
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Candy 2D/3D QTO
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Measuring dimensions
Click on the Take-off list tab at the
base of the screen1. This list records
all the take-offs done in a folder – in
this case the Concrete & Formwork
folder2.
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Candy 2D/3D QTO
Measuring an area
We are now going to measure the
300mm corner slab shown here.
Select the Polygon tool1 (area) to start
the area measurement.
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Candy 2D/3D QTO
Measuring an area
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Click on the start point of the area to
be measured1.
Note how the current measurement
tool is highlighted while in use2.
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Candy 2D/3D QTO
Measuring an area
Keep clicking on each of the boundary
points of the area being measured1.
End the area measurement by right
clicking on the start point1 (or right
click anywhere and the line will
connect to the origin).
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Candy 2D/3D QTO
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Measuring an area
The item measured is displayed in the
Take off List with the standard name
of the tool used1.
The area measured is shown against
the item2 together with the unit of
measure of the tool.
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Candy 2D/3D QTO
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Measuring an area
The name of the measurement item
can be changed to identify the item
on the drawing1.
The dimensions that are produced by
the polygon tool are the area and
perimeter as well as the number of
clicks (count)2.
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Candy 2D/3D QTO
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Measuring an area
The colour used to represent the
measurement can be changed by
clicking on the colour sample1 and
choosing a colour.
Candy 2D/3D QTO
From measurement to quantity
The next step is to use the measured
dimensions to create quantities in the
bill. We need the bill on the screen so
that bill items can be dragged onto
the take-off.
Double click on the Bill of Quantities
tab at the base of the screen and the
bill will float free. Position it at a
convenient place – much easier when
using multiple screens1.
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Candy 2D/3D QTO
From measurement to quantity
Select a bill item1 that uses these
dimensions to calculate its quantity
and drag it onto the take-off item2.
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Candy 2D/3D QTO
From measurement to quantity
Drag the word “Area” into the
formula field of the formwork item1.
This immediately calculates the
formula to arrive at the quantity
which is displayed against the bill
item in the take-off2 and in the bill
below3.
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This is a very simple formula, but
complex calculations can be built as
required.
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Candy 2D/3D QTO
Updating the BOQ
The quantities developed in the take
off can be brought into the Candy
BOQ by copying the bill file into the
QTO quantity column1.
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Candy 2D/3D QTO
Updating the BOQ
The quantities are updated from the
take off copy of the bill and kept in
the QTO quantity column of the bill1.
Each quantity from QTO records the
drawing that it came from and the
name of the take-off item2.
It is up to the supervising QS to accept
the quantities and copy them to the
appropriate Candy quantity – Bill,
Final, Actual or Claimed.
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Candy 2D/3D QTO
The volume of concrete
To calculate the concrete volume of
the measured area we need to define
the slab thickness.
Use the Add variables1 function from
the Right click menu to insert a place
for local variables.
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Candy 2D/3D QTO
The volume of concrete
Enter a Variable called “T” to define
the slab thickness and give it a value
of 0.300m1.
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Candy 2D/3D QTO
The volume of concrete
Drag the reinforced concrete item
from the bill1 and drop it on the takeoff2 – this links the bill Item to this
measurement on this drawing.
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Candy 2D/3D QTO
The volume of concrete
Enter the formula for the concrete in
the slab – Area x T1. This calculates
the volume of concrete and shows the
result on the right2 as well as in the
bill below3.
When the variable T is dropped in the
formula field you are given a choice of
operator to place between it and Area
– nothing, /, *, +, -.
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Candy 2D/3D QTO
Another measurement
Another measurement example :
a slab named RC Ramp Slab A1 and
coloured Yellow1.
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Candy 2D/3D QTO
Another measurement
The thickness of slab is entered as a
Variable as in the previous example.
A new variable, RampArea, is needed
to calculate the actual area of the
ramp slab on the slope1.
Both the formwork and concrete bill
items are associated with this area by
dragging them onto the take-off item
with appropriate formulae2 to
calculate their quantities.
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Candy 2D/3D QTO
Fixing a mistake
The ramp slab area was incorrectly
demarcated. This is easily fixed by
simply dragging the corner points to
the correct positions1.
Note how all the quantities that are
associated with this measurement are
changed immediately 2.
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Candy 2D/3D QTO
Back to the Candy BOQ
The sub-quantities calculated from
each of the two slab take-offs are
shown against the respective bill
items in Candy1.
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Candy 2D/3D QTO
Templates
Templates of common measurements
can be made to speed up the take-off
process.
Templates can be kept in a master
(not available yet) or are made in the
current job as shown in the following
example.
Click on the Templates tab to start1.
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Candy 2D/3D QTO
Templates
Right click to make a new template1.
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Candy 2D/3D QTO
Templates
Give the new template a generic
name and specify which tool it uses –
Number in this case1.
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Candy 2D/3D QTO
Templates
Define the variables the template will
need1.
Work in progress: Dummy bill items
will be added to the templates so they
can hold the quantity calculation as
well.
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Candy 2D/3D QTO
Templates
From the list of templates, drag the
one to be used onto the drawing and
proceed as if it were a normal tool.
In this example, Column was dragged
onto the drawing and clicked on the
three columns indicated1.
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Candy 2D/3D QTO
Templates
From the list of templates, drag the
one to be used onto the drawing and
proceed as if it were a normal tool.
In this example, Column was dragged
onto the drawing and clicked on the
three columns indicated1.
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Candy 2D/3D QTO
Templates
Enter the variables that apply to this
instance of the template1.
Then drag the appropriate bill items
onto the take-off item as shown
previously to calculate the quantities.
In future versions, dummy bill items
will be available in templates which
would hold the formulae to calculate
quantities.
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Candy 2D/3D QTO
The Continue tool
If we had left out a column, ticking
the continue box1 allows us to click on
more columns which would simply
increase the count.
The Continue function operates with
all the measuring tools.
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Candy 2D/3D QTO
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BIM Models
If a BIM model is available it can be
used to generate quantities in a
similar way to 2D. The advantage
with a proper 3D model is that it
knows a lot about the dimensions of
its elements.
Here we are about to import another
drawing, 3D this time1.
Candy 2D/3D QTO
BIM Models
Browse for the model – in this case
it’s one of the Revit demo models.
Candy 2D/3D QTO
BIM Models
This model can be rotated, sliced,
walked through, etc.
Here we are using the Autodesk
Design Review.
Candy 2D/3D QTO
BIM Models
Here we have selected the external
concrete wall1……
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Candy 2D/3D QTO
BIM Models
…..and isolate it so we can see it
better.
Candy 2D/3D QTO
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BIM Models
Select this element as a take-off
item1…..
Candy 2D/3D QTO
BIM Models
….and it appears in the Take-off List
with the dimensions that have been
published in this model1.
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Candy 2D/3D QTO
BIM Models
Proceed as before by dragging the
relevant bill items onto the take-off
item. Quantities are immediately
transferred to the bill below1.
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Candy 2D/3D QTO
BIM Models
The quantities from the BIM model
behave exactly the same as 2D
quantities1.
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Short term Candy Integration
Update quantities from multiple take-off databases.
Exchange folder to deal with multiple bill exports.
Short term 2D
Import from master take-off.
Add or delete polygon grip points.
Ellipse tool.
Markup setting and defaults – Line thickness etc.
Custom PDF printing of drawing. Currently only prints to existing printer drivers.
Revised Drawings update/redo take-off quantities.
Short term 3D
3D templates ?
Extract the correct unit from model
Revised model update/redo take-off quantities
Adding simple mark-up i.e. thickness of wall if it is not quantified.
Change visibility of object from take-off list.
Extract 3D object names
Match “like” 3D objects i.e finds all wall objects and apply same bill items and formulas.
Long term
Add and delete bill items.
Do we need our own 3D viewer (hoops or similar) ?
Analyse 3D objects to calculate additional quantities.
Highlight differences between drawings – Overlay the drawings. (2D)
Read 2D Autodesk dwg files.
2D/3D Take-off
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