Preparing Schedule & Cost Estimation for a building using REVIT

AIM: Preparing Schedule & Cost Estimation for a building using REVIT

 

INTRODUCTION:

Revit is a database driven 3D modelling software that encompasses information in every element. Using this information rich model (BIM) we can leverage the data in these elements for a great number of goals. We will be looking at how you can use schedules to create cost estimates of elements in a building.

Schedules: A schedule is a tabular display of information, extracted from the properties of the elements in a project. A schedule can list every instance of the type of element you are scheduling, or it can collapse multiple instances onto a single row, based on the schedule's grouping criteria. The schedule can be created at any point in the design process. If any changes are made in the model that affects the schedules, It automatically updates to reflect those changes. Using Revit software’s cost estimates can also be developed. By providing the unit cost of materials, total cost can be derived.

The other concept coming under this section is Visual programming. Here, the visual programming tool is Dynamo.lt is an open source visual programming language for Revit, written by designers and construction professionals. It is a programming language that allows to type lines of code; while also creating an algorithm that consist of nodes.

Dynamo and Revit together can be utilised to model and analyse complex geometries, automate repetitive processes, minimise human error, export data to excel files and other file types not typically supported by Revit. Dynamo can make design process more efficient, with an intuitive interface and pre-made scripting libraries

TASK 1:

SHOT KEYS IN REVIT

FUNCTION		KEY
using 3D model create a section box	SECTION BOX	BX
To create similar doors and windows in a floor plan layout	CREATE SIMILAR	CS
To reduce the thickness of lines visible in plan views	THIN LINES	TL
To apply override settings to a floor in the model section view	VISIBILITY GRAPHICS AND OVERRIDE SETTINGS	VG
To increase the range of visibility in a plan view	VIEW RANGE	VR
To select the previously selected items	RESELECT	Ctrl+>
To add annotations to the model views	DIMENSIONS	DI
To bring the model elements in line	ALIGN	AL
To rotate the model elements	ROTATE	R
To move an object to another location	MOVE	MV
To copy a model element	COPY	CO
To mirror an element about an axis	MIRROR	MM
To create an array of model elements	ARRAY	AR

TASK 2:

To prepare a schedule for the following

1. Walls
2. Doors
3. Windows
4. Material – Concrete/Wood

PROCEDURE:

Open the architectural file of challenge 7 and 8

In the view tab click on Schedules and then select schedules/Qualities Option

a) WALL SCHEDULE:

From the category select the wall option and click Ok.

 

From the schedule properties dialogue box choose the necessary parameters for scheduling wall and click ok.

The wall schedule is prepared and is as below

In the similar way as above Door and window schedule was prepared.

b) Door Schedule

c) Window Scheduled

d) Material- Concrete/Wood

In the view tab click on Schedules and then select Materials take-off option

Floor category was selected

Add the required parameters are added  to the scheduled fields as shown

Floor Material take-off schedule is given below

RESULTS:

The wall, door, Window and material schedule was prepared:

a) The wall schedule

b) Door Schedule

c) Window Scheduled

 

d) Floor Material take-off schedule

TASK 3

Using Revit Calculate area and volume of each room in the model with appropriate room tags applied to each room. Prepare a schedule report for area and volume of each room.

PROCEDURE:

The room tags and annotations was provided as shown

In the view tab click on Schedules and then select schedules/Qualities Option

From the category select the wall option and click Ok

 

From the schedule properties dialogue box choose the necessary parameters for scheduling room and click ok.

 

The room area schedule is given as follows:

RESULT:

The room area schedule was created.

 

TASK 4:

Using the same schedule using the unit cost rate for materials available in the internet, prepare total cost of materials used in the project

1. Total Cost of Materials
2. Individual Material Take off

PROCEDURE:

In the view tab click on Schedules and then select Materials take-off option

 

A) Walls:

Walls category was selected and click ok

From the Materials take-off properties dialogue box choose the necessary parameters for floor and click ok.

 

Total cost parameter calculated quantity was also added

The wall material take off is given as follows:

 

B) Doors:

From the Materials take-off properties dialogue box choose the necessary parameters for Door and click ok.

Total cost parameter calculated quantity was also added

 

The Door material take off is given as follows:

 

C) Window:

Window category was selected and click ok

From the Materials take-off properties dialogue box choose the necessary parameters for window and click ok.

Total cost parameter calculated quantity was also added

The window material take off is given as follows:

 

D) Floor:

Floors category was selected and click ok

 

From the Materials take-off properties dialogue box choose the necessary parameters for floor and click ok.

Total cost parameter calculated quantity was also added

The Floor material take off is given as follows:

 

1. D) Furniture:

Furniture category was selected and click ok

 

From the Materials take-off properties dialogue box choose the necessary parameters for furniture and click ok.

Total cost parameter calculated quantity was also added

 

The Furniture material take off is given as follows:

 

RESULTS:

By Using the same schedule and unit cost rate for materials the total cost of materials and individual material take off was created         

TASK 5:

Create  flowchart for the following scenarios

a) How to decide framings for a structure using Dynamo?

 

b) If there is no water coming from the pipes

c) If request for money from client has been declined for the project

TASK 6:

To list the parameters associated with each model element

WALLS	Wall Type Wall Description Wall Length Wall Thickness Wall Height Wall Materials Wall Location Wall cost
Floor	Floor Type Floor Description Floor Height Floor Width’ Floor material Floor cost
Door	Door Type Door Description Door Height Door Width Door Material Door cost
Window	Window Type Window Description Window Height Window Width Window Material Window cost
Table	Window Type Window length Window Weight Window Width Window Material Window cost
Building	Building type Building Floor area Building Perimeter Building Location Building Height Material Possible load and combinations