Quick Reference-Fire Fighting (Part-3)
August 15, 2021 3 Comments
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Pipe Support Details |
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Nominal Pipes Diameter |
Hanger rod diameter |
Hanging Strip Size(thickxwidh) |
Spacing between supports |
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25 mm |
8 mm |
20 x 1 mm |
2 Meter |
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32 mm |
8 mm |
20 x 1 mm |
2.5 Meter |
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40 mm |
8 mm |
20 x 1 mm |
2.5 Meter |
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50 mm |
10 mm |
25 x 1.2 mm |
2.5 Meter |
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65 mm |
10 mm |
25 x 1.2 mm |
2.5 Meter |
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80 mm |
10 mm |
25 x 1.2 mm |
2.5 Meter |
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100 mm* |
12 mm |
25 x 1.6 mm |
2.5 Meter |
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125 mm* |
12 mm |
25 x 2 mm |
3 Meter |
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150 mm* |
12 mm |
25 x 2 mm |
3 Meter |
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* As per Site Requirement Fabrication Support may be used. |
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Sprinkler Qty |
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Pipe Size |
Min.Sprinkler Qty |
Max.Sprinkler Qty |
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25 mm |
1 |
2 |
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32 mm |
3 |
4 |
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40 mm |
5 |
7 |
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50 mm |
8 |
15 |
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65 mm |
16 |
30 |
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80 mm |
31 |
60 |
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100 mm* |
61 |
100 |
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150 mm* |
More than 100 |
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Supporting Chanel & U Bolt |
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Pipe Size |
Chanel |
U Bolt Dia |
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Up to 50 mm |
38x38xx6 mm |
9 mm |
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65 To 100 mm |
75x75x6 mm |
12 mm |
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125 To 200 mm |
88x88x9 mm |
15 mm |
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Flange Details |
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Pipe Dia |
Flange Thickness |
No. of holes |
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200 mm. |
24 mm. |
12 |
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150 mm and 125 mm |
22 mm. |
8 |
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100 mm and 80 mm |
20 mm. |
8 |
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65 mm. |
18mm |
4 |
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40 mm and below. |
16mm |
4 |
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Pipe Support Details |
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MS Angle(mm) |
Anchor Faster |
Width |
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40X40X5 |
12MM |
200MM both Side of Pipe |
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Holiday Test Voltage (IS 15337) |
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Thickness of Coating |
Test Voltage, Max |
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2 mm |
10KV |
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3 mm |
12KV |
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4 mm |
15KV |
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Recommended Welding Electrode Size |
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Average Thickness of Plate or Sections |
Maximum Electrode Size |
Current Range |
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1.5 To 2.0 mm |
2.5 mm |
60 To 95 Amp |
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2.0 To 5.0 mm |
3.2 mm |
110 To 130 Amp |
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5.0 To 8.0 mm |
4.0 mm |
140 To 165 Amp |
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>8.0 mm |
5.0 mm |
170 To 260 Amp |
JIGNESH PARMAR
Thanks……Jignesh.Parmar
Sir,
I am a regular reader of your articles. It is too informative.
The recommended phase to phase and phase to ground clearance on 11kV DP structure is 915mm and 610mm respectively. Please be kind enough to inform, from where (standard or rule) this value is derived.
Good morning, Please clarify how to calculate the main power source of the connected load is about 3000 kW
What should be the main power source capacity and other factors to be considered
Thanks Best regards Srikanth
On Sun, 15 Aug, 2021, 9:14 am Electrical Notes & Articles, wrote:
> Jignesh.Parmar (B.E,Mtech,MIE,FIE,CEng) posted: ” Pipe Support Details > Nominal Pipes Diameter Hanger rod diameter Hanging Strip Size(thickxwidh) > Spacing between supports 25 mm 8 mm 20 x 1 mm 2 Meter 32 mm 8 mm 20 x 1 mm > 2.5 Meter 40 mm 8 mm 20 x 1 mm 2.5 Me” >