NCON INFRA - Civil Engineering
http://blog.ncon.in/index.php?
enFri, 13 Dec 2019 09:11:03 +0530http://blogs.law.harvard.edu/tech/rssDotclearCalculating Size and Storage Capacity of Cement Godowns
http://blog.ncon.in/index.php?post/2016/12/06/Calculating-Size-and-Storage-Capacity-of-Cement-Godowns
urn:md5:e8d2838e1cf2eff74a778c3f65b5ee55Tue, 06 Dec 2016 05:58:00 +0530NCONCivil EngineeringCementCement Godowns <h3>Storage Capacity of a Cement Godown:</h3>
<p>While working out the inside dimensions of a cement godown for storage of specified quantity of cement filled bags, the following dimensions may be considered.</p>
<p>Length of Cement bags: 70 cm (average)</p>
<p>Width: :35 cm (average)</p>
<p>Thickness :14 cm (average)</p>
<p>Clearance and passages :60 cm (average)</p>
<h3>Stepping of Tiers while Removing Cement Bags</h3>
<p>When removing bags for use, apply the “First in, First out” (FIFO) principle i.e. take out the oldest cement first. Each consignment of cement should be stacked separately in the godown so as to permit easy access for inspection and to facilitate removal in a proper sequence. It would be desirable to pin a play card on each pile of cement indicating the date of its arrival in the Godown.</p>
<h3>Conclusion:</h3>
<p>After putting all the calculations it seems that dimension of 20 feet x 15 feet can comfortably store around 1000 bags of cement.</p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>Retaining wall
http://blog.ncon.in/index.php?post/2016/10/24/Retaining-wall
urn:md5:319dd71f8aba15e1be254916ae74d80eMon, 24 Oct 2016 11:27:00 +0530KiranCivil Engineering <p><span class="st" data-hveid="42">A <strong><em>retaining wall</em></strong> is a structure designed and constructed to resist the lateral pressure of soil when there is a desired change in ground elevation that exceeds the angle of repose of the soil. A basement <em>wall</em> is thus one kind of <em>retaining wall</em> . </span></p>
<p>A retaining wall is a structure that holds or retains soil behind it. There are many types of materials that can be used to create retaining walls like concrete blocks, poured concrete, treated timbers, rocks or boulders. Some are easy to use, others have a shorter life span, but all can retain soil.</p>
<figure style="{figureStyle}">
<p><img alt="retaining-walls-.jpg" class="media" height="336" src="http://blog.ncon.in/public/.retaining-walls-_m.jpg" width="457" /></p>
<figcaption>
<h3> </h3>
</figcaption>
</figure>
<h3><em><strong class="article_heading">cantilever Retaining Walls :</strong></em></h3>
<p>Cantilever retaining walls are constructed of reinforced concrete. They consist of a relatively thin <em>stem</em> and a <em>base slab</em>. The base is also divided into two parts, the <em>heel</em> and <em>toe</em>. The heel is the part of the base under the backfill. The toe is the other part of the base.</p>
<h3><em><strong class="article_heading">Counterfort Retaining Walls :</strong></em></h3>
<p>Counterfort retaining walls are similar to cantilever walls except they have thin vertical concrete webs at regular intervals along the backside of the wall. These webs are known as counterforts .</p>
<p>The counterforts tie the slab and base together, and the purpose of them is to reduce the shear forces and bending moments imposed on the wall by the soil. A secondary effect is to increase the weight of the wall from the added concrete . Counterfort retaining walls are more economical than cantilever walls for heights above 25 ft .</p>
<h3><em><strong class="article_heading">Gravity Poured Concrete Retaining Walls :</strong></em></h3>
<p>Gravity retaining walls depend on their own weight and any soil resting on the concrete in resisting lateral earth forces.They are generally economical up to 10 feet in height for cast concrete structures.Usually are sufficiently massive to be unreinforced.Monolithic cast walls are generally formed on site .</p>
<h3><em><strong class="article_heading">Semi-Gravity Retaining Walls</strong></em></h3>
<p>A specialized form of gravity walls is a semi-gravity retaining wall. These have some tension reinforcing steel included so as to minimize the thickness of the wall without requiring extensive reinforcement. They are a blend of the gravity wall and the cantilever wall designs..</p>Cofferdams
http://blog.ncon.in/index.php?post/2016/10/20/Cofferdams
urn:md5:c2372620994872a7ec1e3c0af329b9b1Thu, 20 Oct 2016 16:36:00 +0530KiranCivil Engineering <h1><em>Cofferdams :- </em></h1>
<p><strong>A cofferdam is a temporary structure , which is constructed to remove water or exclude water from an area of excavation , either ground water or water laying above ground level , and make it possible to carry out the construction work under reasonably dry conditions.</strong></p>
<ul>
<li>
<p><strong> The </strong> <strong>cofferdam</strong><strong>s</strong> <strong>are constructed to facilitate pile driving operations.</strong></p>
</li>
<li>
<p><strong>It is used to place grillage & raft fondations., and when the foundations for piers and abutments of a bridge , dams etc. are to be constructed.</strong></p>
</li>
<li>
<p><strong>It is constructed to provide working platform for the </strong> <strong>fondations</strong> <strong>of buildings , when the water is met with. and </strong> <strong> constructed to</strong> <strong>enclose a space for the removal of sunken vessels.</strong></p>
</li>
</ul>
<h1>Types of <em>Cofferdams :- </em></h1>
<p><strong>1. Earth fill </strong> <strong>cofferdam</strong><strong>s.</strong></p>
<p><strong>2. Rock fill</strong> <strong>cofferdam</strong><strong>s.</strong></p>
<p><strong>3. Sand bag dike</strong> <strong>cofferdams.</strong></p>
<p><strong>4. Timber crib or Rock filled crib </strong> <strong>cofferdams</strong>.</p>
<p><strong>5. Sheet pile</strong> <strong>cofferdams</strong>.</p>
<p><strong>6. Single wall</strong> <strong>cofferdam</strong><strong>s</strong></p>
<p><strong>7. Double wall</strong> <strong>cofferdam</strong><strong>s.</strong></p>
<p><strong>8. Cellular </strong> <strong>cofferdam</strong><strong>s.</strong></p>
<p><strong>9. Movable or suspended </strong> <strong>cofferdam</strong><strong>s.</strong></p>
<figure style="float: right; margin: 0 0 1em 1em;"><img alt="Rockfill-cofferdam.jpg" class="media" height="191" src="http://blog.ncon.in/public/.Rockfill-cofferdam_s.jpg" width="240" />
<figcaption>Rockfill-cofferdam.</figcaption>
</figure>
<figure style="float: right; margin: 0 0 1em 1em;"><img alt="Double-walled-cofferdam-300x267.jpg" class="media" height="199" src="http://blog.ncon.in/public/.Double-walled-cofferdam-300x267_s.jpg" width="224" />
<figcaption>Double-walled-cofferdam</figcaption>
</figure>
<figure style="float: left; margin: 0 1em 1em 0;">
<figure style="{figureStyle}"><img alt="earthen-cofferdam.jpg" class="media" height="219" src="http://blog.ncon.in/public/.earthen-cofferdam_s.jpg" width="266" />
<figcaption>Earth fill-cofferdam.</figcaption>
</figure>
<img alt="circular-type-cellular-cofferdam-254x300.jpg" class="media" height="238" src="http://blog.ncon.in/public/.circular-type-cellular-cofferdam-254x300_s.jpg" width="318" />
<figcaption> Cellular-cofferdam</figcaption>
</figure>Bar Bending Machine Automatic
http://blog.ncon.in/index.php?post/2016/10/18/Bar-Bending-Machine-Automatic
urn:md5:9e5bf9464ee23a41995c328a9bce08e5Tue, 18 Oct 2016 04:39:00 +0530NCONCivil EngineeringConstruction Machinery <p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/UJbjQ5huI9o" width="560"></iframe></p>
<p>Sona Construction Technologies Pvt Ltd is well know Construction machinery Equipment Company in India. We have latest automatic stirrup bender machine which very useful for making any type of rebar shapes like square, circle, rectangle, triangle etc.<br />
<br />
This machine combines the vertical and horizontal straightening unit. one for each including the 4 traction rollers drove by the servo motor to ensure that wires reach the exact straightening affect easily.<br />
<br />
Technical Specification : Production Capacity - θ5- θ12 [mm] Production Capacity Per Month - 280-320 Tons with 10 hoursX2 Maximum Bending Angle - +- 180(double Direction) Maximum Bending Speed - 1000 deg/sec Max pulling Speed - 100 m/min Mandrel Diameter - θ25 - θ32 mm Max. length of stirrup side - 1380 mm Min. length of stirrup side - 120 mm Length Tolerance - +-1 mm Bending Tolerance - +-1 degree air compressed consumption - 6 l/min Electric compressed consumption - 5 KW Labeled Electric Power - 25(KW) Voltage - 415 V - 50Hz Overall machine weight - 2, 600 kg Overall Dimension - 8030*2005*2015 [mm]<br />
</p>
<pre>
Visit Online :
http://www.sonavibrators.com Facebook page : https://www.facebook.com/Sonaconstructiontechnologies</pre>QUALITY CONTROL TESTS
http://blog.ncon.in/index.php?post/2016/10/17/QUALITY-CONTROL-TESTS
urn:md5:419fe3f078b34d2ce1e639d5c2ca8f17Mon, 17 Oct 2016 10:59:00 +0530KiranCivil Engineering <p> <strong><u> QUALITY CONTROL TESTS</u></strong><br />
<br />
<strong><u>QUALITY CONTROL AND TESTING PROCEDURES :--</u></strong></p>
<ol>
<li><u>Objectives :-</u></li>
</ol>
<ul>
<li> To provide set or working principles to the field engineers.</li>
<li> To explain the criteria and procedures to be adopted in the implementation of the project.</li>
<li> To enumerate the duties, power and responsibilities of the field engineers</li>
<li> To provide guidance in assuring and controlling the quality of work.</li>
<li> To provide guidance to test the quality of materials and ensure quality.</li>
<li> To ensure uniformity and consistency in regulatory, mandatory and routine activities in the project implementation.</li>
</ul>
<p><strong><u>IMPORTANT TEST:-</u></strong></p>
<p><br />
<strong><u>Tests on Soil:</u></strong><br />
1. Determination of Atterberg limits<br />
2. Determination of Proctor Density.<br />
3. Determination of field density of soil ( Sand Replacement Method)<br />
4. Determination of field density of soil ( Core cutter Method)<br />
5. Determination of CBR of soil in the field (CBR test)<br />
6. Determination of CBR of soil in the laboratory.<br />
7. CBR with Dynamic core penetration method.<br />
8. Nomograph for Computing soaked CBR value from sieve analysis data.<br />
<strong><u>Tests on Coarse Aggregate:-</u></strong><br />
1. Determination of Gradation of Aggregate (Sieve analysis)<br />
2. Determination of Aggregate Impact Value<br />
3. Determination of Flakiness Index<br />
4. Determination of Elongation Index.<br />
<strong><u>Tests on Bituminous Construction :-</u></strong><br />
1. Determination of Binder Content ( Bitumen Extraction Test)<br />
2. Determination of Penetration value of Bitumen<br />
<strong><u>Tests on Cement & Concrete:-</u></strong><br />
1. Normal consistency, Initial Setting & Final Setting time of Cement ( VICAT’s<br />
apparatus)<br />
2. Compressive strength of concrete.</p>
<p><br />
<strong><u>Determination of Atterberg Limits of Soil :- </u></strong></p>
<p><br />
Liquid Limit (LL): It is the water content corresponding to the boundary between<br />
liquid and plastic states of soil.<br />
1. Take 120 gms of soil IS 425 micron sieve.<br />
2. Mix it with distilled water from a paste.<br />
3. Place a portion of the paste in the cup of apparatus<br />
4. Level the specimen to half the cup<br />
5. Cut the paste with the standard grooving tool along the centre line.<br />
6. Start rotating the handle at 2 revolutions per second<br />
7. Count number of blows till two parts of sample come into contact at<br />
the bottom of the grove ( along a distance of 10mm)<br />
8. Record the number of blows and determine the moisture content of<br />
the sample taken near the closed groove.<br />
9. Repeat the test by changing the moisture content so that number of<br />
blows to close the grove is from 35 to 10<br />
10. Plot a graph between log ( no. of blows) and moisture content and fit a<br />
straight line.<br />
11. Read the moisture content corresponding to the 25 number of blows<br />
from the graph. This gives the liquid limit of the soil.<br />
<br />
<strong><u>Compaction Test :-</u></strong></p>
<p><br />
1 Weight of the mould Wm gm <br />
2 Weight of Mould + Compacted soil W gm <br />
3 Volume of Mould Vm cc <br />
4 Wet Density Yw= ( W- Wm)/Vm<br />
5 Weight of the moisture container W1 gm <br />
6 Wright of the container + Wet soil W2 gm <br />
7 Weight of the container + Dry soil W3 gm <br />
8 Moisture content (W%) W%=(W2- W3)/ ( W3-W1) * 100<br />
9 Dry Density (Yd) Yd= (Yw)/ (1+w/100)</p>
<p><br />
<strong><u>Determination of Field Density of Soil :--</u></strong></p>
<p>(Sand Replacement Method)</p>
<p><br />
1. The pouring cylinder shall be filled so that the level of the sand in the cylinder<br />
is within about10mm of the top. Its total initial weight ( W1) shall be found and<br />
shall be maintained constant throughout the tests for which the calibration is<br />
used. Volume of sand equivalent to that of the excavated hole in the soil (or<br />
equal to that of the calibration container) shall be allowed to run out of the<br />
cylinder. The shutter on the pouring cylinder shall then be closed and the<br />
cylinder placed on a plane surface such as the glass plate.<br />
2. The shutter on the pouring cylinder shall be opened and sand allowed to run<br />
out. When no further movement of sand takes place in the cylinder, the<br />
shutter shall be closed and the cylinder moved carefully.<br />
3. The sand that has filled the cone of the pouring cylinder ( that is the sand that<br />
is left on the plane surface ) shall be collected and weighed to the nearest<br />
gram repeated at least three times and the mean weight ( W2) taken.<br />
4. The internal volume (V) in cc of the calibrating container may be calculated<br />
from its internal dimensions.<br />
5. The pouring cylinder shall be placed concentrically on the top of the<br />
calibrating container after being filled to the constant weight (W1). The<br />
shutters on the pouring cylinder shall be closed during this operation. The<br />
shutters shall be opened and sand allowed to run out. When no further<br />
movement of sand takes place , the shutter shall be closed. The pouring<br />
cylinder shall be removed and weighted to the nearest gram.<br />
6. These measurements shall be repeated at least three times and the mean<br />
weight ( W3) taken.<br />
7. A flat area approximately 45cm square of the soil to be tested shall be<br />
exposed and trimmed down to a level surface, preferably with the aid of the<br />
scraper tool.<br />
8. A round hole approximately 10cm dia and the depth of the layer to be tested<br />
upto a maximum of 10 cm depth shall be excavated in the soil. No loose<br />
material shall be left in the hole. The metal tray with a central hole shall be<br />
laid on the prepared surface of the soil with the hole over the portion of the<br />
soil to be tested – the hole in the soil shall be then be excavated using the<br />
hole in the tray as a patter. This tray shall be removed before the pouring<br />
cylinder is placed in a position over the excavated hole. The excavated soil<br />
shall be carefully collected and weighed to the nearest gram.<br />
9. The moisture content of (W) of the excavated soil shall be determined by<br />
taking representative sample of soil. Alternatively, the whole of the excavated<br />
soil may be dried and weighted(Wd)<br />
10. The pouring cylinder filled to the constant weigh (W1) shall be placed so that<br />
the base of the cylinder covers the hole concentrically, the shutters on the<br />
pouring cylinder shall be closed during this operation. The shutter shall then<br />
be opened and sand allowed to run out into the hole.<br />
11. The pouring cylinder and surrounding area shall not be vibrated during this<br />
period. When no further movement of sand takes place, the shutter shall be<br />
closed. The cylinder shall be removed and weighed to the nearest gram( W4)<br />
Note: It is necessary to make a number of repeated determinations say 4 to 5<br />
and to average the results, since the dry density of the soil varies appreciably<br />
from point to point.<br />
12. The weight of sand (Wa) in gm required to fill the calibrating container shall<br />
be calculated from the following formula<br />
Wa= W1- W2- W3 where<br />
W1= Weight of pouring cylinder and sand before pouring into calibrating<br />
cylinder in gms<br />
W2= Mean weight of sand in cone in gm.<br />
W3= Mean weight of cylinder with residual sand after pouring into calibrating<br />
cylinder and cone in gms.<br />
13. The bulk density of the sand Ys in ( gm/cc) shall be calculated from the<br />
formula: Ys= Wa/V, where V= Volume of calibrating cylinder in cc<br />
14. The weight of sand (Wb) in gm required to fill the excavated hole shall be<br />
calculated from the following formula:<br />
Wb= W1- W4- W2, Where<br />
W1= Weight of cylinder and sand before pouring into the hole in gm<br />
W2= Mean weight of sand in cone in gm.<br />
W4= Weight of cylinder and sand after pouring into hole and cone in gm<br />
15. The bulk density of the soil Yb shall be calculated from the following formula<br />
Yb= (Ww/Wb)* Ys gm/cc, where<br />
Ww= Weight of natural soil excavated in gm.<br />
Wb= Weight of sand required to fill the hole in gm.<br />
Ys= Bulk density of sand.</p>
<p>16. The density of the dry soil Yb shall be calculated from the formula<br />
Yd= (Ww/Wb) * Ys gm/cc Or ( 100/(100+W)) * Yb gm/cc, where<br />
W= Moisture content of the soil in percent.<br />
Wd= Weight of dry soil from the hole in gm and<br />
Wb= Weight of sand required to fill the hole in gm<br />
17. The following values shall be replaced<br />
a) Dry density of soil in gm/cc<br />
b) Moisture content of the soil in percent.<br />
The permissible limit of the field density of observed sample should be 95% of the<br />
field density in the case of embankments and 97% in the case of sub-grade.<br />
<br />
<u><strong>Determination of Aggregate Impact Value :-</strong></u></p>
<p><br />
1. Aggregate passing through 12.5mm IS sieve and retained on 10mm sieve is<br />
filled in the cylindrical measure in 3 layers by tamping each layer by 25 blows.<br />
Determine the net weight of aggregate in the measure (W1)<br />
2. Transfer the sample from the measure to the cup of the aggregate impact<br />
testing machine and compact it by tamping 25 times.<br />
3. The hammer is raised to height of 38cm above the upper surface of the<br />
aggregate in the cup and is allowed to fall freely on the specimen.<br />
4. After subjecting the test specimen to 15 blows, the crushed aggregate is<br />
sieved on IS 2.36mm sieve.<br />
5. Weight the fraction passing through IS 2.36mm sieve ( W2)<br />
6. Aggregate impact value= W2/W1 * 100<br />
<br />
<u><strong>Determination of Elongation Index :-</strong></u></p>
<p><br />
1. The sample is sieved through IS sieve 63,53,40,31.5,25,20,16,12.5,10<br />
and 6.3mm<br />
2 Minimum 200 pieces if each fraction to be tested are taken and weighed<br />
(W gm)<br />
3. Separate the elongated material by using the standard elongation gauge by<br />
passing each pieces of aggregates from each fraction in lengthwise .<br />
4. Take the weight of the elongated material which retained on gauge (W gm)<br />
5. Elongation Index ( EI)= Weight of material retained on gauge *100<br />
<br />
<strong><u>Determination of Binder Content :--</u></strong></p>
<p><br />
1. A representative sample of 150mm*150mm BT flake is to be exactly weighed<br />
and placed in the bowl of the extraction apparatus.<br />
2. Cover the sample with commercial grade benzene.<br />
3. The mixture is allowed to stand for about one hour before starting the<br />
centrifugal machine.<br />
4. The dried filtering is weighed and then fitted around edge of the bowl and the<br />
cover of the bowl is clamped tightly.<br />
5. A beaker is placed under the drain to collect the extract.<br />
6. The machine is revolved and the speed is maintained till the solvent ceases<br />
to flow from the drain.<br />
7. The machine is allowed to stop and 200ml of benzene is added to the bowl<br />
and the procedure is repeated.<br />
9. Filter the extract through a filter paper.<br />
10. Dry the filter paper in the oven and determined the weight of fines in the<br />
<br />
<br />
<em><u><strong>Compressive Strength of Concrete :--</strong></u></em></p>
<p><br />
1. Fill the mould with freshly mixed concrete in 3 equal layers, compact it with<br />
tamping bar giving 35 bowls in each layer uniformly and finally level off with<br />
the trowel. Mark the date of casting cube and the identification of member.<br />
2. Keep the specimen in moist air of atleast 90% relative humidity and at a temp.<br />
of 27 plus or minus 2 degree Celsius for 24 hours. Alternatively, cover the<br />
moulds with wet gunny bags.<br />
3. After specified time period is over remove the specimen from the mould and<br />
submerge it in clean fresh water, maintained at a temp. of 27 + 20<br />
the cube is ready for test.<br />
4. Take out the cube after for 3,7,14,24,28 days as required and wipe off the<br />
surface water with cloth.<br />
5. Note down the dimensions and weigh the cube and then place it in the<br />
compression testing machine. Such that the four corners are enclosed with<br />
the circle of the rim.<br />
6. Apply the load on the cube at the rate of 130 to 140 kg/sq.cm/Min. till it fails<br />
record the maximum load applied.<br />
7. The compressive strength is calculated in N/ sq. mm by dividing maximum<br />
low takes in Newtons by the cross sectional area of the cube calculated from<br />
the mean dimension of the section.<br />
8. Inspect the type of failure and record it.<br />
Initial & Final Setting Of Cement</p>
<p><br />
<strong><u>(Vicat apparatus IS:5513-1969) --</u></strong></p>
<p><br />
> Take 350 gms of cement, mix with 0.85 times of water to give a standard<br />
consistency.<br />
> Start a stop watch at the instant when the water is added to the cement.<br />
> Fill the standard mould with the cement paste completely and level the top<br />
surface with a trowel.<br />
> The cement block thus prepared is the test block.<br />
<strong><u>Initial Setting time:--</u></strong><br />
> Place the test block confined in the mould under the rod bearing initial setting<br />
needle. Lower the needle gently in contact with the surface of the test block<br />
and quickly release allowing it to penetrate into the test block.<br />
> Repeat this procedure until the needle fails to pierce the block for 5+ 0.5mm<br />
measured from the bottom of the mould.<br />
> The total time elapsed shall be initial setting time._<br />
<u><strong>Final Setting time</strong></u>:<br />
> Replace the needle of the vicats apparatus with an annular ring.<br />
> Repeat the procedure of lowering the needle and the annular ring into the test<br />
block to penetrate.<br />
> After some time the needle makes an impression on the surface of the test<br />
block but the ring fails to do so.<br />
> The time elapsed from the time of adding water to the cement till the above<br />
state shall be the final setting time.<br />
Initial Setting time (minimum) : 30 minutes<br />
Final Setting time (maximum) : 600 minutes</p>
<p><br />
<em> THANK'S & REGARDS : KIRAN SOLANKI</em></p>Indian Railways Vs Chinese Railways | Massive Comparison
http://blog.ncon.in/index.php?post/2016/10/11/Indian-Railways-Vs-Chinese-Railways-%7C-Massive-Comparison
urn:md5:3a197ee7660911704200ccdbe84349f4Tue, 11 Oct 2016 14:21:00 +0530NCONCivil Engineering<p>Its is interesting to see the comparision of Indian Railway with China Railway. Both the country has population problem.</p> <p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/tYinWB2Rw00" width="560"></iframe></p>LAW OF COSINE.
http://blog.ncon.in/index.php?post/2016/10/08/LAW-OF-COSINE.
urn:md5:3776d22d948136529640b50b02536497Sat, 08 Oct 2016 16:08:00 +0530KiranCivil Engineering<p>The Law of Cosine to find unknown angles and distance..</p> <blockquote><p>The Law of Cosine</p></blockquote>
<pre> a2 = b2 + c2 – 2bc cos(A)</pre>
<pre> b2 = a2 + c2 – 2ac cos(B)</pre>
<pre> c2 = a2 + b2 – 2ab cos(C)</pre>
<blockquote><p>The Cosine Rule can be used in any triangle where you are trying to relate all three sides to one angle.</p></blockquote>
<blockquote><p>if you need to find the length of a side, you need to know the other two sides and the opposite angle.</p></blockquote>
<blockquote><p>The Law of Cosine is useful when you know the to adjacent side and internal angle between that two side than Length of</p></blockquote>
<pre> third sidecan be find out by this equation .</pre>Water Boring - Driling
http://blog.ncon.in/index.php?post/2016/10/06/Water-Boring-Driling
urn:md5:cbce6b1bbb17578bd0b2e3b6abb23cb2Thu, 06 Oct 2016 12:09:00 +0100KiranCivil Engineering<p>Bore is drill in dimension of 8 inch, 10 Inch and 12 Inch with casing pipe to be cement concrete or Steel Pipe or PVC.</p> <p>Bore is down by drilling machine trolley having self generator and work has be continued unstop 24 hours till the desired depth of the bore is not reached. Mud has to be added or Bintonite Solution @ 2% has to be added for side wall stability.</p>
<p>Normally 8 to 10 man are required at time for carryout the activity of bore.</p>