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

Pratik kamble at 12:41, 23 March 2017

2017-03-23T12:41:32Z

Pratik kamble at 05:37, 17 March 2017

2017-03-17T05:37:36Z

Sandhya.np14 at 07:11, 5 December 2016

2016-12-05T07:11:20Z

Sandhya.np14 at 13:12, 28 November 2016

2016-11-28T13:12:44Z

Sandhya.np14 at 12:11, 28 November 2016

2016-11-28T12:11:03Z

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PoojaMoolya: Created page with " {| Border = 1 | '''Time''' | '''Narration''' |- | 00:01 | Hello and Welcome to this Spoken Tutorial on construction of the dome of the Digester tank. |- | 00:08 |..."

2016-11-23T11:42:12Z

Created page with " {| Border = 1 | '''Time''' | '''Narration''' |- | 00:01 | Hello and Welcome to this Spoken Tutorial on construction of the dome of the Digester tank. |- | 00:08 |..."

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{| Border = 1
| '''Time'''
| '''Narration'''

|-
| 00:01
| Hello and Welcome to this Spoken Tutorial on construction of the dome of the Digester tank.

|-
| 00:08
| The tutorials on- digging of the pit and laying the foundation are available on Spoken-tutorial.org website.

|-
| 00:18
| In this tutorial, we will learn- The step-by-step procedure for constructing a dome.

|-
| 00:26
| So what is a dome?

|-
| 00:28
| Dome is an arch like structure placed on the digester tank where the biogas is collected.

|-
| 00:36
| Construction of the dome is a very interesting and important procedure.

|-
| 00:43
| Items used for construction are Steel rods, Chicken mesh and Steel wire

|-
|00:51
|Detailed specifications of these are mentioned in the tutorial on materials required.

|-
|01:00
| Let’s begin. First, make a circle of 7 feet and 6 inches diameter with lime powder.

|-
|01:08
|Now put 12 marks on the circumference of the circle and number them from 1 to 12, as shown.

|-
|01:19
|These 12 marks should be separated by a distance of two feet from each other.

|-
| 01:27
| Next, hammer 12, 10-inch steel rods all along the marked circumference.

|-
|01:35
|Hammer 10-inch steel rods upto 2 inches in the ground.

|-
|01:42
|Remember that they have to be removed later.

|-
| 01:48
| Next comes the use of 12-feet long steel rods.

|-
| 01:53
| With the 12-feet long steel rods, we’ll make an outer circle around the hammered 10-inch steel rods.

|-
| 02:02
| I will now tell you how to make a circle using the hollow rod.

|-
|02:08
|Use an iron rod having hollow ends.

|-
|02:12
|With this iron rod, bend the 12-feet steel rods to form a circular shape.

|-
| 02:19
| Then place the circular steel rods around the smaller 10-inches steel rods, as shown.

|-
|02:28
|We will need two 12 feet rods to complete the circle.

|-
| 02:33
| Now tie the circular steel rods to the 10-inch steel rods using steel wires, as shown.

|-
|02:42
|Ensure that the knot is tied very tightly and the steel rod circle is very stable.

|-
|02:49
|This is the base of the dome.

|-
|02:52
|Hence it has to be very strong to bear the load of the plastered dome later.

|-
| 02:58
| Now hammer a 4-feet and 2 inches long bamboo stick in the center of the circle, as shown.

|-
|03:06
|Hammer the bamboo stick up to 2 inches in the ground.

|-
|03:11
|Ensure that it can stand firmly by itself and can be easily removed later

|-
|03:18
|This bamboo stick should be able to temporarily support the frame of the dome.

|-
| 03:24
| Now let’s start building the frame of the dome.

|-
| 03:27
| Again, use the hollow iron rod and bend a 12-ft long steel rod to form an arch like shape.

|-
|03:37
|This arch will give the semi-circular shape to the dome.

|-
|03:41
|Hence, ensure that the arch is symmetric on either side when bent.

|-
|03:48
|Similarly, bend 2 more 12-feet rods to form arches.

|-
| 03:55
| Let me explain exactly how the arches have to be placed on the circumference using a diagram.

|-
|04:03
|Secure one end of the arch at rod number 1, and the other end of the arch at rod number 7.

|-
|04:11
|This will ensure perfect symmetry to the arch and it will rest on the bamboo stick in the centre.

|-
|04:19
|Use steel wires to tie the arch together with the hammered 10-inches steel rod and the circular ring.

|-
| 04:28
| For tying, make a knot like structure with the steel wire, as shown here.

|-
| 04:35
| Do likewise at the opposite end of the arch, as well.

|-
| 04:40
| Next we will tie two more arches.

|-
|04:44
| Secure the second arch to rod number 3, and rod number 9.

|-
|04:50
|And secure the third arch to rod number 5 and rod number 11.

|-
| 04:57
| The 12 feet steel rod arches should be- at an angular separation of 60 degree at the base

|-
|05:07
| Now, we have three arches for the frame of the dome.

|-
|05:12
|Next, carefully slide the steel rods at the top such that a small gap is left open in between.

|-
|05:22
|Tie the steel rods using the steel wires as shown.

|-
|05:27
|Intersection of the three arches will look like a triangle.

|-
|05:32
|The sides of the triangle should be approximately 2.5 inches as shown in the image

|-
|05:40
|The top view of the framework should look like this after tying.

|-
| 05:46
| What you see here is the mason showing- the exact position of the open triangular gap using the bamboo stick

|-
| 05:54
| This gap is where the main gas pipe of 1 inch diameter will fit.

|-
| 06:01
| Once the arches have been fixed, we have to make circular rings with the remaining 12-feet steel rods.

|-
| 06:11
| First let us understand how to make these rings with the help of a diagram.

|-
| 06:17
| This is the framework we constructed so far

|-
| 06:21
| circular base and semi-circular arches

|-
| 06:26
|Now we need to fix 8 circular rings such that they can be placed on the arches, as shown.

|-
| 06:34
|The rings have to be uniformly separated by a distance of 8 inches between each of them.

|-
| 06:43
| To make circular rings, start from the top and gradually move downwards.

|-
| 06:49
| Two things to keep in mind while making circular rings are

|-
|06:54
| The length of the steel rod would depend upon the position of the circular ring on the frame.

|-
|17:02
|Longer steel rods would be required as we gradually go from top to bottom.

|-
| 07:09
| We will first have to cut the steel rods to the required length before we fix the rings.

|-
| 07:16
| So, let’s do that.

|-
|07:18
|For the first ring, which is the smallest ring at the top, we will need approximately 4 feet and 7 inches steel rod ,adding 2 feet extra for tying.

|-
|07:33
|Diameter of this circular ring will be 10 inches

|-
| 07:39
|For the second ring, we will need approximately 7 feet and 1 inch of steel rod.

|-
| 07:47
| Diameter of this ring will be 1 foot and 7 inches

|-
| 07:53
|For the third ring, 9 feet and 8 inches steel rod would be required

|-
| 07:59
| Diameter would be 2 feet and 5 inches

|-
|08:04
|Fourth ring will require 12 feet 3 inches long steel rod.

|-
| 08:11
|Diameter of this ring will be 3 feet and 3 inches

|-
| 08:15
|The fifth ring will need 14 feet and 10 inches long steel rod

|-
| 08:21
| Diameter of this ring will be 4 feet and 1 inch

|-
| 08:27
|Sixth ring will require 17 feet and 4 inches long rod.

|-
| 08:33
| Diameter of this ring will be 4 feet and 10 inches

|-
| 08:39
|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.

|-
| 08:54
|And the diameter for all the 8 rings is calculated excluding the 6 inches.

|-
| 09:02
| Now comes the 7th and 8th ring.

|-
| 09:06
|Both will be used for making the circular rings and also the entrance of the dome.

|-
| 09:13
|Measurements for these two rings are-

|-
| 09:17
|The Seventh ring will require 20 feet and 10 inches long steel rod.

|-
| 09:23
|And for eighth ring 23 feet and 5 inches long steel rod would be required.

|-
| 09:31
|Keep in mind that this includes the measurement for the bent rods as well

|-
| 09:38
| As soon as three circular rings are placed, an important thing to be done is

|-
| 09:45
| Place 6 Bamboo sticks of length 4 feet in an inclined position inside the frame of the dome.

|-
| 09:54
| Note that Bamboo sticks have to be spread out uniformly from the centre of the base.

|-
| 10:02
|And should be firmly rested against the circular rings or the arches.

|-
| 10:09
| These sticks will further give support to the frame of the dome.

|-
| 10:14
| Please note, if you follow the measurements mentioned earlier- Then you will get a uniform distance of 8 inches between each circular ring.

|-
| 10:26
|To confirm this, use a 1 foot steel scale having two hooves.

|-
| 10:32
|The distance between these two hooves should be 8 inches.

|-
| 10:37
|And it should fit in between two circular rings as shown here.

|-
| 10:43
|However, you may ignore minor variations, if any.

|-
| 10:48
| Just after placing the 6th circular ring an important thing to be done is to fix vertical rods on the frame.

|-
| 10:58
| I will explain how to do that:

|-
| 11:01
| Between two half-arches - Fix a steel rod of length 5 feet and 5 inches bisecting the two main arches.

|-
| 11:13
| Tie this rod using steel wires from the base ring upto the first ring as shown in the image.

|-
| 11:22
| Similarly, fix two more steel rods of '''4 feet and 7 inches''' bisecting the half-arch and the 5 '''feet and 5 inches''' steel rod.

|-
| 11:36
|Tie these two rods using steel wires from the base ring upto the second ring, as shown.

|-
| 11:44
|Please note- between the 5th and 6th, 10 inches hammered steel rod do the following:

|-
| 11:52
| The 4feet 7 inches long steel rod has to be bent and tied to the 6th ring.

|-
| 12:00
|This is done to make space for the entrance of the dome as shown in the image.

|-
| 12:06
|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.

|-
| 12:17
| Now we will fix the last two circular rings i.e. the 7th and 8th ring.

|-
| 12:23
|However it is to be noted that - between 6th and 8th ring will be the gap or the entrance to the dome.

|-
|12:32
| This gap should be big enough for the mason to enter inside the dome.

|-
| 12:39
|Size of this gap would be approximately- 2 feet of width and 2 feet of height

|-
| 12:47
| Use 7th and 8th ring to make gap of the mentioned size.

|-
| 12:53
|Bend the 7th rod, to make the upper side of the entrance, as shown in the image, And bend the 8th ring downward.

|-
| 13:04
|This will make the lower end of the gap or entrance, as shown in the image,

|-
|13:10
| Now, tie the bent 7th and 8th rings firmly with steel wires

|-
| 13:17
| Next comes covering the frame of the dome with chicken mesh.

|-
| 13:23
| Use a metal scissor to cut the required size of the chicken mesh.

|-
| 13:29
|Start covering the frame tightly with the mesh, from top to bottom.

|-
| 13:35
| To tie the mesh to the frame, stretch the mesh tightly and tie it to the frame with steel wires.

|-
| 13:45
|This can be done by using a metal hook.

|-
| 13:49
|To tighten the layers of the chicken mesh-Insert the hook into the hole(s) of the two layers

|-
| 13:57
|Rotate the hook by stretching the mesh and simultaneously entwining the meshes.

|-
| 14:04
| Please note- if the chicken mesh is not stretched tightly then cracks might appear later while plastering the dome.

|-
| 14:15
| Remember to leave an extra 4-5 inches of chicken mesh at the nape of the frame.

|-
| 14:23
|Reason for this will be explained while fixing the dome on the digester tank.

|-
| 14:29
| The entire frame should be covered with 3 bundles of chicken mesh.

|-
| 14:35
|This would form approximately 3 layers over the dome.

|-
| 14:40
| The multiple layers of chicken mesh will help to hold the cement firmly while plastering the dome.

|-
|14:48
| Chicken mesh covering the entrance to the dome, should be cut with scissors.

|-
| 14:53
| What you see here is the mason getting inside the dome through the same gap or the entrance.

|-
| 15:00
| Once the chicken mesh is fixed, remove the bamboo sticks placed inside for support.

|-
| 15:07
|Please note that the sticks have to be gently removed so as to not disturb the frame of the dome.

|-
| 15:15
| Do so carefully and slowly.

|-
| 15:18
| The mesh dome is now ready and can be placed on the digester tank.

|-
| 15:24
|Before shifting untie the 10 inches hammered steel rod from the base ring.

|-
| 15:31
|And make sure of re-tying the loose ends of the mesh.

|-
| 15:36
| This brings us to the the end of this tutorial of constructing a dome for the Biogas plant.

|-
| 15:44
| Fixing of the dome on the Biogas plant will be explained in a later tutorial.

|-
| 15:50
| Let us summarize, In this tutorial we learnt, The step-by-step procedure to construct the dome of the Digester tank.

|-
| 16:00
| This video was created by Spoken Tutorial Project with inputs from Rural-ICT team, IIT Bombay.

|-
| 16:08
| More information on these projects can be found at these links.

|-
| 16:17
| This is Bella Tony along with the animation team of the Spoken Tutorial project signing off.
Thank you for joining.

|}

@@ Line 243: / Line 243: @@
 |-
 |  06:49
-|  Two things to keep in mind while making circular rings are:
+|Two things to keep in mind while making circular rings are:
 |-
 |06:54
-|* the length of the steel rod would depend upon the position of the circular ring on the frame.
+|the length of the steel rod would depend upon the position of the circular ring on the frame.
 |-
-|7:02
+|07:02
-|* longer steel rods would be required as we gradually go from top to bottom.
+|longer steel rods would be required as we gradually go from top to bottom.
 |-
@@ Line 258: / Line 258: @@
 |-
-|  07:16
+|07:16
-|  So, let’s do that.
+|So, let’s do that.
 |-
@@ Line 559: / Line 559: @@
 |-
 |  16:17
-|  This is Bella Tony along with the animation team of the Spoken Tutorial project, signing off.
+|  This is Bella Tony along with the animation team of the Spoken Tutorial project, signing off. Thank you for joining.
 Thank you for joining.
 |}

@@ Line 250: / Line 250: @@
 |-
-|17:02
+|7:02
 |* longer steel rods would be required as we gradually go from top to bottom.

@@ Line 6: / Line 6: @@
 |-
 | 00:01
-|  Hello and welcome to this '''Spoken Tutorial''' on '''construction of the dome''' of the '''Digester tank'''.
+|  Hello everyone!! Welcome to this '''Spoken Tutorial''' on '''construction of the dome''' of the '''digester tank'''.
 |-
@@ Line 22: / Line 22: @@
 |-
 |  00:28
-|  Dome is an arch like structure placed on the '''digester tank''' where the biogas is collected.
+|  Dome is an arch like structure placed on the digester tank where the biogas is collected.
 |-
@@ Line 39: / Line 39: @@
 |01:00
 |  Let’s begin.
-First, make a circle of 7 feet and 6 inches diameter with lime powder.
+First, make a circle of 7 feet 6 inches diameter with lime powder.
 |-
@@ Line 51: / Line 51: @@
 |-
 |  01:27
-|  Next, hammer twelve 10-inch steel rods all along the marked circumference.
+|  Next, hammer twelve 10-inches steel rods all along the marked circumference.
 |-
 |01:35
-|Hammer 10-inch steel rods up to 2 inches in the ground.
+|Hammer 10-inches steel rods up to 2 inches in the ground.
 |-
@@ Line 67: / Line 67: @@
 |-
 |  01:53
-|  With the 12-feet long steel rods, we’ll make an outer circle around the hammered 10-inch steel rods.
+|  With the 12-feet long steel rods, we’ll make an outer circle around the hammered 10-inches steel rods.
 |-
@@ Line 179: / Line 179: @@
 |-
 |  04:57
-| The 12 feet steel rod arches should be at an angular separation of 60 degree at the base.
+| The 12 feet steel rod arches should be at an angular separation of 60 degrees at the base.
 |-
@@ Line 247: / Line 247: @@
 |-
 |06:54
-|* The length of the steel rod would depend upon the position of the circular ring on the frame.
+|* the length of the steel rod would depend upon the position of the circular ring on the frame.
 |-
 |17:02
-|* Longer steel rods would be required as we gradually go from top to bottom.
+|* longer steel rods would be required as we gradually go from top to bottom.
 |-
@@ Line 279: / Line 279: @@
 |-
 |  07:53
-|For the third ring, 9 feet and 8 inches steel rod would be required,
+|For the third ring, 9 feet and 8 inches steel rod would be required;
 |-
@@ Line 287: / Line 287: @@
 |-
 |08:04
-|Fourth ring will require 12 feet 3 inches long  steel rod,
+|Fourth ring will require 12 feet 3 inches long  steel rod;
 |-
@@ Line 295: / Line 295: @@
 |-
 | 08:15
-|The fifth ring will need 14 feet and 10 inches long steel rod,
+|The fifth ring will need 14 feet and 10 inches long steel rod;
 |-
@@ Line 303: / Line 303: @@
 |-
 | 08:27
-|Sixth ring will require 17 feet and 4 inches long  rod,
+|Sixth ring will require 17 feet and 4 inches long  rod;
 |-
@@ Line 331: / Line 331: @@
 |-
 |  09:17
-|The Seventh ring will require 20 feet and 10 inches long steel rod.
+|The seventh ring will require 20 feet and 10 inches long steel rod.
 |-
@@ Line 363: / Line 363: @@
 |-
 |  10:14
-|  Please note, if you follow the measurements mentioned earlier then you will get a uniform distance of 8 inches between each circular ring.
+|  Please note that if you follow the measurements mentioned earlier then you will get a uniform distance of 8 inches between each circular ring.
 |-
@@ Line 371: / Line 371: @@
 |-
 |  10:32
-|The distance between these two hooves should be 8 inches.
+|The distance between these two hooves should be 8 inches
 |-
 |  10:37
-|And, it should fit in between two circular rings as shown here.
+|and it should fit in between two circular rings as shown here.
 |-
@@ Line 411: / Line 411: @@
 |-
 |  11:52
-| The 4feet 7 inches long steel rod has to be bent and tied to the 6th ring.
+| The 4 feet 7 inches long steel rod has to be bent and tied to the 6th ring.
 |-
@@ Line 419: / Line 419: @@
 |-
 |  12:06
-|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.
+|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.
 |-
@@ Line 439: / Line 439: @@
 |-
 |  12:47
-|  Use 7th and 8th ring to make gap of the mentioned size.
+|  Use 7th and 8th rings to make gap of the mentioned size.
 |-
 |  12:53
-|Bend the 7th rod to make the upper side of the entrance, as shown in the image. And, bend the 8th ring downward.
+|Bend the 7th rod to make the upper side of the entrance, as shown in the image and bend the 8th ring downward.
 |-

@@ Line 383: / Line 383: @@
 |-
 |  10:48
-|  Just after placing the 6th circular ring an important thing to be done is  to fix vertical rods on the frame.
+|  Just after placing the 6th circular ring, an important thing to be done is  to fix vertical rods on the frame.
 |-
@@ Line 419: / Line 419: @@
 |-
 |  12:06
-|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.
+|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.
 |-
@@ Line 475: / Line 475: @@
 |-
 |  13:49
-|To tighten the layers of the chicken mesh-Insert the hook into the hole(s) of the two layers
+|To tighten the layers of the chicken mesh-insert the hook into the hole(s) of the two layers.
 |-
@@ Line 531: / Line 531: @@
 |-
 | 15:24
-|Before shifting untie the 10 inches hammered steel rod from the base ring.
+|Before shifting, untie the 10 inches hammered steel rod from the base ring
 |-
 | 15:31
-|And make sure of re-tying the loose ends of the mesh.
+|and make sure of re-tying the loose ends of the mesh.
 |-
 |  15:36
-|  This brings us to the the end of this tutorial of constructing a dome for the Biogas plant.
+|  This brings us to the end of this tutorial of constructing a dome for the biogas plant.
 |-
 |  15:44
-|  Fixing of the dome on the Biogas plant will be explained in a later tutorial.
+|  Fixing of the dome on the biogas plant will be explained in a later tutorial.
 |-
 |  15:50
-|  Let us summarize, In this tutorial we learnt, The step-by-step procedure to construct the dome of the Digester tank.
+|  Let us summarize. In this tutorial, we learnt the step-by-step procedure to construct the dome of the digester tank.
 |-
 | 16:00
-|  This video was created by Spoken Tutorial Project with inputs from Rural-ICT team, IIT Bombay.
+|  This video was created by '''Spoken Tutorial Project''' with inputs from '''Rural-ICT''' team, '''IIT Bombay'''.
 |-
@@ Line 559: / Line 559: @@
 |-
 |  16:17
-|  This is Bella Tony along with the animation team of the Spoken Tutorial project signing off.
+|  This is Bella Tony along with the animation team of the Spoken Tutorial project, signing off.
 Thank you for joining.
 |}