Bellatony911 at 07:15, 29 April 2016

2016-04-29T07:15:07Z

Bellatony911: Created page with " {| style="border-spacing:0;" | style="border:0.75pt solid #000000;padding:0.071cm;"| '''Visual Cue''' | style="border:0.75pt solid #000000;padding:0.071cm;"|..."

2016-04-29T07:12:50Z

Created page with " {| style="border-spacing:0;" | style="border:0.75pt solid #000000;padding:0.071cm;"| <center>'''Visual Cue'''</center> | style="border:0.75pt solid #000000;padding:0.071cm;"|..."

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{| style="border-spacing:0;"
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>'''Visual Cue'''</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>'''Narration'''</center>

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| '''Slide 1f'''

'''Construction of the Dome'''
| style="border:0.75pt solid #000000;padding:0.071cm;"| Hello everyone.

Welcome to this Spoken Tutorial on construction of the dome of the Digester tank.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| The tutorials on-

* digging of the pit and
* laying the foundation

are available on Spoken-tutorial.org website
| style="border:0.75pt solid #000000;padding:0.071cm;"| The tutorials on-

* digging of the pit and
* laying the foundation

are available on Spoken-tutorial.org website

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| '''Slide 2'''

'''Construction of the Dome'''

We will learn:

The step-by-step procedure for constructing a dome.
| style="border:0.75pt solid #000000;padding:0.071cm;"| In this tutorial, we will learn-

The step-by-step procedure for constructing a dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| '''Slide 3'''

'''Construction of the Dome'''

What is a dome?
| style="border:0.75pt solid #000000;padding:0.071cm;"| So what is a dome?

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| Image of the animated Biogas dome
| style="border:0.75pt solid #000000;padding:0.071cm;"| Dome is

* an arch like structure
* placed on the Digester tank
* where the Biogas is collected.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| Construction of the dome is a very interesting and important procedure.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]

[[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| Items used for construction are-

* Steel rods
* Chicken mesh and
* Steel wire

Detailed specifications of these are mentioned in the tutorial on materials required.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Let’s begin

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| First, make a circle of 7 feet 6 inches diameter with lime powder.

Now put 12 marks on the circumference of the circle and number them from 1 to 12, as shown.

These 12 marks should be separated by a distance of two feet from each other.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>Animation </center>

<center>[[Image:]]</center>

<center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| Next, hammer 12 10-inch steel rods all along the marked circumference.

Hammer the 10-inch steel rods upto 2 inches in the ground.

Remember that they have to be removed later.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| Next, comes the use of 12-ft long steel rods.
| style="border:0.75pt solid #000000;padding:0.071cm;"| Next comes the use of 12-ft long steel rods.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| With the 12-ft long steel rods, we’ll make an outer circle around the hammered 10-inch steel rods.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| I will now tell you how to make a circle using the hollow rod.

Use an iron rod having hollow ends.

With this iron rod, bend the 12-ft steel rods to form a circular shape.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| Then place the circular steel rods around the smaller 10-inch steel rods, as shown.

We will need 2, 12-ft rods to complete the circle.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| Now tie the circular steel rods to the 10-inch steel rods using steel wires, as shown.

Ensure that the knot is tied very tightly and the steel rod circle is very stable.

This is the base of the dome.

Hence it has to be very strong to bear the load of the plastered dome later.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| Now hammer a 4-ft and 2 inches long bamboo stick in the center of the circle, as shown here.

Hammer the bamboo stick up to 2 inches in the ground.

Ensure that

* it can stand firmly by itself and
* can be easily removed later<br/>

This bamboo stick should be able to temporarily support the frame of the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| Let’s start building the frame of the dome.
| style="border:0.75pt solid #000000;padding:0.071cm;"| Now let’s start building the frame of the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>Animation</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| Again, use the hollow iron rod and bend a 12-ft long steel rod to form an arch like shape.

This arch will give the semi-circular shape to the dome.

Hence, ensure that the arch is symmetric on either side when bent.

Similarly, bend 2 more 12-ft rods to form arches.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>Diagrammatic representation </center>

<center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| Let me explain exactly how the arches have to be placed on the circumference using a diagram.

Secure one end of the arch at rod number 1, and the other end of the arch at rod number 7.

This will ensure perfect symmetry to the arch

And it will rest on the bamboo stick in the centre.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>

| style="border:0.75pt solid #000000;padding:0.071cm;"| Use steel wires-

# To tie the arch together with the hammered 10-inch steel rod <br/>

# And the circular ring

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>

| style="border:0.75pt solid #000000;padding:0.071cm;"| For tying, make a knot like structure with the steel wire, as shown here.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| Do likewise at the opposite end of the arch, as well.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| Next, we will tie two more arches.
| style="border:0.75pt solid #000000;padding:0.071cm;"| Next, we will tie two more arches.

Secure the second arch to rod number 3, and rod number 9.

And secure the third arch to rod number 5 and rod number11.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| The 12 feet steel rod arches should be-

* at an angular separation of 60 degree at the base

| style="border:0.75pt solid #000000;padding:0.071cm;"| The 12 feet steel rod arches should be-

* at an angular separation of 60 degree at the base

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| Now, we have three arches for the frame of the dome.

Next, carefully slide the steel rods at the top such that a small gap is left open in between.

Tie the steel rods using the steel wires as shown.

Intersection of the three arches will look like a triangle.

The sides of the triangle should be approximately 2.5 inches.

As shown in the image, the top view of the framework should look like this after tying.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| What you see here is the mason showing-

* the exact position of the open triangular gap using the bamboo stick

* This gap is where the main gas pipe of 1 inch diameter will be fit.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| Once the arches have been fixed, we have to make circular rings with the remaining 12-feet steel rods.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| First let us understand how to make these rings with the help of a diagram.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| 3D animation
| style="border:0.75pt solid #000000;padding:0.071cm;"| This is the framework we constructed so far -

* circular base
* semi-circular arches

Now we need to fix 8 circular rings such that they can be placed on the arches, as shown.

The rings have to be uniformly separated by a distance of 8 inches between each of them.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| To make circular rings, start from the top and gradually move downwards.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>

| style="border:0.75pt solid #000000;padding:0.071cm;"| Two things to keep in mind while making circular rings are-

# The length of the steel rod would depend upon the position of the circular ring on the frame.
# Longer steel rods would be required as we gradually go from top to bottom.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>Image</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| We will first have to cut the steel rods to the required length before we fix the rings.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| 3D animation- steel rod bending to form a ring with length and diameter

| style="border:0.75pt solid #000000;padding:0.071cm;"| So, let’s do that.

For the first ring, which is the smallest ring at the top.

We will need approximately 4 ft and 7 inch steel rod (adding 2 feet extra for tying).

* Diameter of this circular ring will be 10 inches

For the second ring, we will need approximately 7 ft 1 inch of steel rod.

* Diameter of this ring will be 1 foot and 7 inches

For the third ring, 9 ft and 8 inches steel rod would be required

* Diameter would be 2 ft 5 inches

Fourth ring will require 12 ft 3 inches long of steel rod.

Diameter of this ring will be 3 ft and 3 inches

Fifth ring will need 14 ft 10 inches long steel rod

* Diameter of this ring will be 4 feet 1 inch

Sixth ring will require 17 feet 4 inches long rod.

* Diameter of this ring will be 4 feet and 10 inches

Remember-

* as mentioned while explaining the first circular ring
* an extra 2 feet has been calculated for tying the rods together with steel wires for all the 8 rings.
* And the diameter for all the 8 rings is calculated excluding the 6 inches.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Now comes the 7th and 8th ring.

Both will be used for making the circular rings and also the entrance of the dome.

Measurements for these two are-

Seventh ring will require 20 ft and 10 inches long steel rod.

And for eighth ring 23 ft and 5 inches long steel rod would be required.

Keep in mind that this includes the measurement for the bent rods as well

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| As soon as three circular rings are placed, an important thing to be done is-

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>

| style="border:0.75pt solid #000000;padding:0.071cm;"| * Place 6 Bamboo sticks of length 4 ft in an inclined position inside the frame of the dome.
* Note that- Bamboo sticks have to be spread out uniformly from the centre of the base.
* And should be firmly rested against the circular rings or the arches.
* These sticks will further give support to the frame of the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]

| style="border:0.75pt solid #000000;padding:0.071cm;"| Please note, if you follow the measurements mentioned earlier-

Then you will get a uniform distance of 8 inches between each circular ring.

To confirm this, use a 1 foot steel scale having two hooves.

The distance between these two hooves should be 8 inches.

And it should fit in between two circular rings as shown here.

However, you may ignore minor variations, if any.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Just after placing the 6th circular ring an important thing to be done is - to fix vertical rods on the frame.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| I will explain how to do that:

|-
| style="background-color:transparent;border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>

<center>Saurabh: Show animation remove the image below as it already has mesh.</center>

<center>[[Image:]]</center>
| style="background-color:transparent;border:0.75pt solid #000000;padding:0.071cm;"| Between two half-arches -

* Fix a steel rod of length 5 ft and 5 inches bisecting the two main arches.
* Tie this rod using steel wires from the base ring upto the first ring as shown in the image.
* Similarly, fix two more steel rods of 4 ft and 7 inches bisecting the half-arch and the 5 ft and 5 inches steel rod.
* Tie these two rods using steel wires from the base ring upto the second ring, as shown.
* Please note- between the 5th and 6th 10 inch hammered steel rod do the following:
* The 4ft 7 inches long steel rod has to be bent and tied to the 6th ring.
* This is done to make space for the entrance of the dome as shown in the image.

Note that, in both cases-

Extra 3 inches have been left at the top for the ease of tying the steel wire to the circular rings.

|-
| style="background-color:transparent;border:0.75pt solid #000000;padding:0.071cm;"|
| style="background-color:transparent;border:0.75pt solid #000000;padding:0.071cm;"| Now we will fix the last two circular rings i.e. 7th and 8th ring.

However it is to be noted that -

between 6th and 8th ring will be the gap or the entrance to the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| This gap should be big enough for the mason to enter inside the dome.

Size of this gap would be approximately-

* 2 ft of width and
* 2 ft of height

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Use 7th and 8th ring to make the

gap of the mentioned size.

Bend the 7th rod, to make the upper side of the entrance, as shown in the image

And bend the 8th ring downward.

This will make the lower end of the gap or entrance, as shown in the image.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Now, tie the bent 7th and 8th rings firmly with steel wires

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Next comes covering the frame of the dome with chicken mesh.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Use a metal scissor to cut the required size of the chicken mesh.

Start covering the frame tightly with the mesh, from top to bottom.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]

[[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| To tie the mesh to the frame, stretch the mesh tightly and tie it to the frame with steel wires.

This can be done by using a metal hook.

To tighten the layers of the chicken mesh-

# Insert the hook into the hole(s) of the two layers

# Rotate the hook by stretching the mesh and simultaneously entwining the mesh(es).

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Please note- if the chicken mesh is not stretched tightly then-

* cracks might appear later while plastering the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| Remember to leave an extra 4-5 inch of chicken mesh at the nape of the frame.

Reason for this will be explained while fixing the dome on the digester tank.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| The entire frame should be covered with 3 bundles of chicken mesh.

This would form approximately 3 layers over the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| The multiple layers of chicken mesh will help to hold the cement firmly while plastering the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| Chicken mesh covering the entrance to the dome, should be cut with scissors.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| What you see here is the mason getting inside the dome through the same gap or the entrance.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| Once the chicken mesh is fixed, remove the bamboo sticks placed inside for support.

Please note that the sticks have to be gently removed so as to not disturb the frame of the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| Do so carefully and slowly.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| The mesh dome is now ready and can be placed on the digester tank.

Before shifting untie the 10 inch hammered steel rod from the base ring.

And make sure of re-tying the loose ends of the mesh.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| This brings us to the the end of this tutorial of constructing a dome for the Biogas plant.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"| Fixing of the dome on the Biogas plant will be explained in a later tutorial.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| '''Slide 4'''

'''Summary:'''

We have learnt:

The step-by-step procedure to construct the dome of the Digester tank.
| style="border:0.75pt solid #000000;padding:0.071cm;"| Let us summarize

In this tutorial we learnt,

Step-by-step procedure to construct the dome of the Digester tank.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| '''Slide 5'''

'''Acknowledgements '''

This video was created by:

Spoken Tutorial project with inputs from Rural-ICT

team IIT Bombay

| style="border:0.75pt solid #000000;padding:0.071cm;"| This video was created by Spoken Tutorial Project with inputs from Rural-ICT team, IIT Bombay.

|-
| style="border-top:none;border-bottom:0.75pt solid #000000;border-left:0.75pt solid #000000;border-right:0.75pt solid #000000;padding:0.071cm;"| '''Slide 6'''

'''Acknowledgements'''

More information on these projects can be found

at these links

http://spoken-tutorial.org/NMEICT-Intro
http://ruralict.cse.iitb.ac.in/

| style="border-top:none;border-bottom:0.75pt solid #000000;border-left:0.75pt solid #000000;border-right:0.75pt solid #000000;padding:0.071cm;"| More information on these projects can be found at these links.

http://spoken-tutorial.org/NMEICT-Intro

http://ruralict.cse.iitb.ac.in/ in

|-
| style="border-top:none;border-bottom:0.75pt solid #000000;border-left:0.75pt solid #000000;border-right:0.75pt solid #000000;padding:0.071cm;"|
| style="border-top:none;border-bottom:0.75pt solid #000000;border-left:0.75pt solid #000000;border-right:0.75pt solid #000000;padding:0.071cm;"| Pictures and technology support:

Courtesy:

Bhagirath Rural Development Foundation

Village- Zarap, Taluka- Kudal,

Dist.- Sindhudurg

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"|
| style="border:0.75pt solid #000000;padding:0.071cm;"|

This is Bella Tony along with the animation team of the Spoken

Tutorial project signing off.

Thank you for joining.

|}

Biogas-Plant/C3/Construction-of-the-Dome/English - Revision history

Nancyvarkey at 13:05, 27 May 2016

Bellatony911 at 10:13, 19 May 2016

Bellatony911 at 07:15, 29 April 2016

Bellatony911: Created page with " {| style="border-spacing:0;" | style="border:0.75pt solid #000000;padding:0.071cm;"| '''Visual Cue''' | style="border:0.75pt solid #000000;padding:0.071cm;"|..."

@@ Line 7: / Line 7: @@
 | style="border:0.75pt solid #000000;padding:0.071cm;"| '''Slide 1f'''
-'''Construction of the Dome'''
+Welcome to this Spoken Tutorial on construction of the dome of the Digester tank.
 | style="border:0.75pt solid #000000;padding:0.071cm;"| Hello everyone.
@@ Line 29: / Line 30: @@
 | style="border:0.75pt solid #000000;padding:0.071cm;"| '''Slide 2'''
 We will learn:
@@ Line 41: / Line 41: @@
 | style="border:0.75pt solid #000000;padding:0.071cm;"| '''Slide 3'''
-'''Construction of the Dome'''
 What is a dome?