|GENERAL INSTRUCTIONS FOR ERECTION OF CHAIN LINK SECURITY FENCING
A preliminary survey is conducted to define the boundary limit of land to be fenced. By means of Grader (or Blade Scraper) if needed the Fence Line has to be cleared out of any debris & obstacle by having clear path on both sides of Fence Line.
A final survey is conducted to define Fence Line. Mark out Fence Line with the aid of Pegs & a Builders Line, inserting Pegs for each terminal Corner, Strainer & Gate Post.
Using relevant Pegs & Builders Line, define & mark out Intermediate & Terminal Posts Footings (usually maximum distance between Posts is 3M) the straight runs between Pull Posts do no exceed 150M, use Corner Posts or Pull Posts for any change in direction. Excavation of footings to be made to the size & depth required.
Start by erecting Terminal Posts (End, Strainer, and Corner & Gate Posts) to the elevation required. It is preferred at this stage to Concrete Terminal Posts footing or if required to secure them by any means of firm supports (Tripods, Shuttering etc...). Using Terminal Posts as guiders & with the help of Builders Lines & a Spirit Level Bar, the intermediate posts can be erected plumb a Spirit Level Bar, the intermediate posts in the required position before Concreting.
Using the required specified Concrete Mix, pour the footing to the required height by means of hand trowel, and finish to top of the footing by usually sloping down the Concrete from centre of Posts to facilitate Water drain away from Posts. The Concrete should be allowed 12 to 24 hours to cure & harden before proceeding to the next stop (Tensioning Wire or Braces).
Bracing of Terminal Posts can differ from one system to the other. Horizontal or Diagonal bracing is usually used. The main point here is to fix the Braces items before tensioning wires (Tension Wire or Barbed Wire) before doing so & with Bands system of Accessories it is preferred to insert all Bands which are required on the bottom section of the Brace. By bracing Terminal Posts you will have a firm & rigid posts system which can take the tension forces applied on those posts.
If Barbed Wire is required on top of Fence, it has to be tensioned first. Tension Wire to be fixed next. The tensioning is done between Terminal Posts for Barbed by means of Eye Bolts & U Connectors, Tension Wires by means of Short winders. This wire shall be strained tightly. Each line of Barbed Wire shall be secured to each intermediate Posts by means of Stirrup Wire.
After securely tensioning all Wires, Chain Link Fabric can be erected. Chain Link Fabric shall be strained between each pair of Terminal Posts by means of Stretcher Bar. The Fabric shall be pulled taut. Then Fabric shall be tied to the Tension Wire by means of Tie Wires. Ties usually made at a space between 30 & 45 CM, also Fabric should be tied to intermediate Posts at the same spacing if required.
Remove a spiral from end of the roll to be joined on. This is easily achieved by unknuckling the end of the first spiral & winding the spiral upwards with an anti-clock wise screwing motion until fully removed. Bring together the end of one roll with the beginning of the next roll and unite them by twisting the loose spiral clockwise through each link in screw form. When the spare spiral has been screwed into position, the knuckles should be closed at the top & bottom of the fence to complete the join.
First, unknuckle the top & bottom ends of the spiral where split is required. Remove this spiral from the roll completely by winding in an anti-clockwise direction.
It is important that the end of one roll is joined to the beginning of the next.
Gate shall be installed plumb have a cleared opening span around them.