Structural analysis of a buidling using Robot Structural Analysis

Q1. What are HVAC systems? Why are they essential in the modeling of buildings ?

Ans. HVAC system is one of the important component in the modeling of a building. The term HVAC stands for Heating, Ventilation and Air conditioning. Now lets get into these terms, Heating means to increase the temperature of the input air which flows into the building.

ventilation can be defined as the replacement of the old air present in the room with new fresh air this can also be said as input of fresh air and output of stale and bad air. Air conditioning isawell known term which means that to allow cool air into the building.

HVAC systems have become mandatory in these days as the technology isdeveloped and everyone are used to comforts. With proper HVAC systems we can increse the sustainability and condition of the building environment. ltalso improves the comfort and increses the mood of workability of the members.

Mainly these HVAC systems are used at malls, offices and large clubs where the population is more. As the population is more more amount of air will be required otherwise it leads to suffocation. These days people have started paying more intrest regarding their health. with the help of automatic HVAC systems we can control the internal temperature very easily.

If the outside environment temperature is more automatically the colling system will on and moderates the temperature by allowing morecool fresh air. If the inside temperatu re iscold the system activates the heating system or heaters,which gradually increses the temperature and makes us feel comfortable. So HVAC systems are important and are essential in modeling a building.

Q2. From week 7 assignment, based on the building designed use the same Revit file to design a HVAC system for each floor to cover the topics included in the class.
a. Typical HVAC unit includes Distribution center
b. Collector
c. Ducts
d. Blower
Based on the layout choose appropriate ducts and elevation using property browser and assign the components to appropriate groups to complete modeling of the HVAC unit ?

Ans.

AIM - Design a HVAC system for each floor to cover the topics included in the class.
a. Typical HVAC unit includes Distribution center
b. Collector
c. Ducts
d. Blower

Procedure -

1. Open a new mechanical template and save it .

2. click on collaborate tool

3. Next collaborate dialog box appears select within network option and click on ok

4. Draw the grids and specify the coordinates (0'0')

5. Select manage link option and add the architectural model to the mechanical model.

6. Then the select acquired coordinates and select the project to set the coordinates same as the host models.

7. Select the system tab and add the supplier and air terminal in each rooms.

8. Select all the elements in the room and click on duct option.

9. Now the HVAC system is setup for the room , repeat the same process for all the floor in the building.

Result - HVAC system in the building is completed.

Q3. Use the add-ins tab to load plug-ins for robot structural analysis to your Revit software ?

Ans. Following steps are -

• First check whether the robot structural analysis is enabled or disabled.
• If not avaliable we have to download it from auto desk store.
• Cclick on the trolley logo (or) shopping cart logo on the top of rev
• The autodesk store ope in the search box type structureanalysis followed by the respective version /year of the revit software.
• Then download the tool
• The rotot structural analysiswill be reflected in our revit software.

Q4. Why do we need to assess buildings/analyze while modeling elements? Does design affect modeling in anyways?

Ans.

Structure is one of the important component in a building. We cannot imagine or achieve a successful building without a proper structure.

The structure framework acts as a skeleton framework to the building. All the loads are being taken by the structural part. The architecture part only plays an important role in the appearance of the buliding.

Structure analysis is very important to a building as to know how much load can the building bare and how long the building can with hold the loads. Before the construction of the building we do not have all the componnets installed in the building like wall sand other components, so before we construct the buildingwe have to do the analysis on taking appropriate load values to calculate how much load the structure can bare. After the construction of the building if the structure collapses as it cannot hold the load. then we cannot do anything.We can calcutale the total load, deflections, SFD and BMD.

Structure analysis can also be considered as a demo test or sample test to get a detailed strength of the structure. In a building we have many types of loads like point load, uniform load, area load and so on. So in thisanalysis we can add the type of load we want and assume the load values to test our structure. It is considered better if the structure holds more load than the load capicity calculated in the analysis.

The design affects the model so we have to place the columns at such places where they do not cause much disturbance and at places where it can hold maximum amount of load. So thus we can conclude that it isnecessary to do the structure analysis while modeling elements and we can say that the design affects modeling.

Q5. From the structural model developed in week 6 and 7, export the complete analytical model to robot structural analysis.
a. List your assumptions on what boundary conditions will be realistic for the analysis approach
b. Use the design standards to decide what loads must be applied to floorings based on the type of structure decided
c. List the load combinations and include them in the analysis model
d. Analyze the building and report the following results
i. Maximum Moment in each floor for all Load Combinations
ii. Maximum Displacement in each floor for all Load combinations
iii. Lateral Displacement in building for all Lateral Load combinations
e. After analysis, do you think you have a better approach or idea in modeling structural members?

Ans.

AIM :To perform robot structure analysis to the building created in the previous week.

Procedure -

(A) Boundary conditions are the conditions which are to be satisf ied at all parts of a biundary region where differential conditions have to be solved separetely.For the analysis of the structure we have to have loads,as in oue case we do not have any loads so we have to assume suitable amount of load for the analysis. We have have forces in any direction along X, Y or Z axi Wehave to assume that the total moment as 0 and the structure is in equilibrium. We have to place loads at suitable places so as to complete the analysis. The list of parameters required are :

1. Degree of freedom
2. Supports
3. Type of load
4. Opposing loads

We can apply different types of loads based on our requirements like:

1. Dead load
2. Live load.
3. Earthquake load
4. Wind load

(B) The total number of floors in my building are three floors including the ground floor (G3 floors).

Steps -

1. First we have to open the structure template file which was created previously for the week 6 and 7 .

2. In the views we have to select analytic model and go to 3D view .

3. Go to manage tab and select structural setting option .

4. Under that select load combination tool .

5. Now select the amount of load and the type of load that we want to use in the analysis of building.

6. Now go to analysis tab and select the type of support we want to use in our structural analysis.

7. Now click analysis and now we see the load calculations we have applied to our structure.

Result -

Q6. What is energy analysis and why do we need to consider it while modeling in Revit? How does the factor of sustainability improve the quality of your design?

Ans.

Energy analysis is a way where we can calculate the amount of energy used in an operation which involvesphysical and chemical actions which also playsa role in transfering and exchange of energy.With the help of energy analysis we can analyze the in and out volume of air through the openions and rooms. With thisanalysis we can f ind out the defects in our project and rectify the plan in which we do not have any problems from the environment.

In this analysis all the components are taken into consideration like electric equipments and other equipments which releases heat into the environment. The energy analysis is very important in the modeling of project in revit because if the energy released is more it may cause human and environmental damage.

We have to implement different techniques where the energy released could be minimized like using renewable sources of energy like solar panels, biomass, wind energy and so on.We have to recyclemost of the products which does not cause more damage to the environment.

We can peform the energy analysis for revit models by using energy analysis for autodesk revit. This add-in connects the design power of the revit project file to the Autodesk green building studio which actsas a basic constrain for calculation and evaluation.