Security welded mesh fence V shaped barbed wire topping

1. Intermediate security welded mesh fence as per following specifications. The fence shall be augmented with V shaped barbed wire toppings (3-4 line wires at each side having coiled razor wire in the middle).

   • The intermediate security welded mesh fence shall be installed up to the height of 3 m constructed of narrow aperture heavy duty mesh with barbed tape concertina topping forming an overall height of 4m. This fence shall comply with BS 1722 Part 14 Category 4/Equivalent.
   • 75mm × 12mm welded mesh with 4mm horizontal and 6mm vertical wires extended up to 3m augmented by barbed tape concertina wire up to 4m from ground level.
   • Length of mesh panel is 5m. 127mm × 76mm universal steel posts at 2.75mm centers mounted in concrete to sufficient strength. Mesh level shall not extend below ground level.
   • 980mm barbed tape concertina with 7 clips per spiral and short blades at 25mm centers.
   • The density of BTC when deployed shall not exceed 200mm between adjacent centers. The coil is to be wired to line wire at each point of contact.

2. Class 4 high security welded mesh fence.

   • The high security welded mesh fence shall be installed up to a height of 3.6m constructed of narrow aperture heavy duty mesh with a barbed tape concertina (BTC) topping giving an overall height of 4.5m. Material specifications and installation of this fence shall comply with BS 1722 Part 14 Category 4/Equivalent.
   • The fence shall have a double layer welded mesh with 4mm horizontal and 6mm vertical wires (horizontal wires to be on attack side) up to 2.34m high from ground level and then single layer of same specification up to 3.6m augmented with barbed tape concertina wire up to 4.5m.
   • Length of fence is 5m installed between 127mm × 76mm universal steel posts mounted in concrete to sufficient strength.
   • Mesh level extends 300mm below ground level.
   • Barbed tape concertina (980mm) with 7 clips per spiral and short blades at 25mm centers.
   • The density of BTC when deployed shall not exceed 200mm between adjacent centers. The coil shall be wired to line wire at each point of contact.

3. Wire toppings (3-4 line wires at each side having coiled razor wire in the middle) and a fence mounted analyzer to detect attack on the fence.

   

   S/No	Type of Fence	Length of Fence (M)	No of Sections	Mesh Size 75mm × 12mm (Wire Size 4mm Horizontal × 6mm Vertical)	Steel Post Size 127 × 76mm length 4.86m	Foundation Post 450mm × 450mm × 1260mm
   1	Class 3 Welded Mesh	35	14	width 3m	15	15
   2	Class 3 Welded Mesh	45	18	width 3m	19	19
   3	Class 3 Welded Mesh	35	14	width 3m	15	15
   4	Class 3 Welded Mesh	40	16	width 3m	17	17
   5	Class 4 Welded Mesh (Double Mesh)	5 + 5	2	width 3.9m and 2.64m	3	3
   -	-	160 + 5	64	-	69	69