tower tech detail

8/11/2019 Tower Tech Detail

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SCHEDULE OF GURANTEED TECHNICAL PARTICULARS OF TOWERS(132KV ANGLE TOWER)

1. Whether the Material used conform to the relevant specifications

Yes.

2. Type of Joints

Bolted.

3. Details of design of the towers.

Self-supporting lattice structures. Bracing will be designed for shear force and main

legs bending moments. Due regards will be given to the relief provided to the bracingmembers by the horizontal Component of the inclined main leg forces. As a wholeowers will be designed as vertical Cantilever trussed beam.

4. truct. !ormula for calculation of allowance stresses in tower mem"ers

As per !S-"#$ %&art-'(Section ) $* -'++$

#. Details of hielding

As per !S-$,#+ !S-"#$ latest.

$. %Do% Tower &'tensions

%*,/0 %*1/

(. Details of templates used

emplate used for stub setting.

). Details of *nsulation attachment and earth conductor clamps.

Suspension !nsulator '#nos '23 mm 4 $33 mm Dia

+. Details of earthing of towers

As per !S-,#2,(!S-$,#+(!55-"#

1,. Details of construction of towers

6alvanised structure bolted together and assembled at site.

11. Details of -olts /uts and Washers

Bolts nuts for structural members conforming to !S-',270 !S-11,+ !S-,#1, %/in.

dia of bolt shall be '1mm class 3.1*


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12. Details of cuttings of mem"ers etc.

&repared from detail fabrication drawings.

13. Details of tep -olts.

'1bolt placed at main leg of tower appro4 823# c(c starting $3##mm above 6.9.

on alternate face.

14. Details of 0nticlim"ing device

Barbed wire used.

1#. -Do- Bird guard

Barbed wire used.

1$. -Do% danger num"ers phase plates.

/.S. &late in each face.

1(. %Do% galvanising

All structural Steel including Stub shall be hot dipped galvanised zinc coating shallbe as per !S-273+-'+"2 %/inimum 1'# gms(/$*

1). *ndividual loads inclusive of factor or safety and transverse longitudinal vertical tens.&tc. under normal condition.

9oad !S-"#$ %&art-'* sec '('++3

1+. %Do% under "roen wire condition

9oad !S-"#$ %&art-'* sec '('++3

2, 0ggregate loads compressive and tensile with factors of safety "ased on loads spcidifferent conditions

9oad !S-"#$ %&art-'* sec '('++3

21Measured unsupported length of mem"ers.

,2"# mm

22. adius of gyration of mem"ers.

$.+, cm

$,. Slenderness ratio

''$


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24. i5e of mem"er proposed

!SA '3# : '3# : '# bottom leg

2#. 6ermissi"le 7rippling stress and load

$$, /pa.0 11#'# ;g.

2$. 8ross area of cross section of mem"ers

$+.#, cm

2(. /o. and si5e of "olts provided

'2


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3+. !actor of afety for towers

As per !S-"#$ %&art '* Sec '('++3

2#. %Do% &'tensions

As per !S-"#$ %&art '* Sec '('++3

41. Designation of standard type towers.

A-Suspension ower #-$oDeviation

B-angle tower ) #-,#o- Deviation

C heavy angle tower-,#

o

-1#

o

42. 6osition of insulator

As per 5C-,13 &art-!0 !S-"#$ &art !0 Sec '0 !S-3#"$

43. Type of insulator

As per 5C-,13 &art-!0 !S-"#$ &art !0 Sec '0 !S-3#"$

44. /ormal span length

,$# metre

4#. /o of "roen conductors assumed.

Any two phases bro>en on the same size and same span or any one phase and oneground wire bro>en on the same side and same span whichever combination is morestringent for a particular member.

21. Minimum /ormal ground clearance of conductor at ma'. pecified temperature

2.'30 metre

4( ag of line conductor in still air at ma'. pecified temperature for normal span

".#37 metre

4). 9eight a"ove ground level of lowest cross arm

'$." metre

4+. :ertical distance "etween "ottom and middle cross arm

2.'3 metre


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#,. %Do% Middle and top%Do%

2.', /etre

#1. 9eight of point of earth conductor a"ove top of highest line conductor cross arm

7.+$3 m

#2. Total height of tower a"ove ground level

$7.' m

#3. ;verall dimensions of tower "ase at ground line%transverse ' longitudinal


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#+. %Do% for stu"s%Do%

2#$ ;g.

$,. :olume of e'cavation given for each type of tower

3' Cu-m %Fithout e4tension normal soil*

$1. 9ori5ontal spacing "etween top line conductors

3.21 m

$2. %Do% Middle Do%

3."#$ m

$3. %Do%-ottom%Do%

1.,7" m

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