Respected Mr. Sanjay  For finalizing the structural drawings and BOM's of 132 KV Tower Type DA , Angelique is required to forward clarifications/focus on following points:-

1.       Top Plan of Cap Plate 184 may be shown for the purpose of supporting suspension clamp. In the cage & Peak drawing.

 2.   Standards of spring washers and flat washers may also be mentioned in the foot  note of every structural drawing.

3.   As per clause 4.1 General each tower shall be fitted with an anti-climbing device (ACD), at a level on tile tower 3 M above highest ground level at tower base. ACD have been provided in four places as in Basic Body, 9 m, 6 m, 3 m body extensions. As per specifications, ACD is to be provided at 3 m level from ground. The basic body tower would hardly be used independently. It will mostly be used with LE of +/- of 4.5 m height or some time with 9 m, 6 m 3 m body extension including further +/- 0 LE. How ACD clause of specification can be adhered to and provision of double ACD is justified.

4.    In BOM of Basic Body Tower the reference of other structural drawings of cage & Peak and cross arms be also mentioned for completeness. Furthermore column "SECTION" be further sub divided showing Qty,Type, mmxmmxmm, width(mm)/ Others & length  for better clarity and understanding. Like wise nomenclature of L, PL, F, B,N, FB,SB,SW & Others be mentioned in the foot note for  better understanding by the client. In this regard proposed  MOM of Basic Tower is attached herewith for reference.

5.    As per rough estimate about 240 nos suspension towers shall be required to be erected out of which about 200 nos tower shall be of standard height satisfying requirement of Ground clearance + max sag + hardware fitting clearance +150 mm. For first hand glimpse of total weight of standard tower consisting of Basic Body Tower and four nos. Leg extension of +/- 4.5 m it is pertinent to prepare a separate BOM of a Standard Tower mentioning references of all structural drawing nos.6.    As per clause 4.1 General Line name plate indicating Employer's name with emergency number are also to be provided on every tower. As such provision of the same may also be done. Below danger plate.

 7.     You are using stub template above the Leg Extensions. In this regards as already stated that there would be about 200 nos. suspension towers with basic body and +/- 0 LE. This will practically consume huge time in leveling, adjusting the sag template at considerable height of 5 m for proper setting of stubs during foundations. Any improvisation to achieve the efficiency would be required in your interest.

8.     In the stub setting dimensions calculations, LE's have been considered from -3 m to +6 m instead of from -3 m to + 3 m as per specification and approved outline

diagram. Even if vertical dimensions are being considered then dimensions of 7.5 m may also be considered. How the B/B at the top of stub both horizontally and diagonally have been arrived at may please be clarified in at least one case by considering approved base dimensions of B/B 5338 mm in case basic body by arriving final width after applying develop and considering height of 765.5 mm (300+465.5).

9.     For Tower slop for basic body below cage the TAN β, face and develop   have been mentioned as 0.10094294, 1.005081826 and 1.010138087 respectively. How these have been arrived at may please be clarified as we are getting as 0.100709001233046, 1.00505836 and 1.010091385 respectively based on B/B top and bottom dimensions of basic body. 10. Since AIL have completed detailed survey and are in the process of submission of detailed profiles and tower schedule.  M/s AIL should estimate the provision of numbers of leg extensions actually required at site. Regards J.Sahu Project manager