In the case where there is no access at the rear of the timber, suitable coach screws can be used (12mm diameter). It is recommended that they be inserted along the centre-line of the timber as shown above. There are two different head types on the anchors. The “A” type is the original head and is used most widely. The general method of installation is to mark out the ground where the anchors are needed by using wooden pegs or any other item that can be pushed into the ground. An anchor is driven in at each point where there is a marker and then the structure is either placed over the anchors or, if “L” brackets are being used, then they are located over the anchors and then fastened to the anchor and the structure using screws. See the first diagram below on the left to get me off the hook from explaining further! The bolted method used by the “A” types gives the most secure fixing off the types in use.   The “C” type head is easier and quicker to use and is better suited to temporary uses where structures are being erected and then dismantled regularly. This applies mainly to events where, for example, mobile horse jumps are being used. The mobile structure is fitted with a bracket that has a slot through which the anchor can be passed. The item to be fixed is placed in position and then “nailed” to the ground by driving the anchor through the slot until the underside of the head touches the bracket. At this point it cannot go any further. The slot in the bracket prevents the anchor from rotating and therefore it cannot come back out of the ground unless it “breaks out”. See the 50mm Diameter “C” Type page for further details.    Further Information > Fixing Methods ©Spirafix Limited 2010 - All Rights Reserved - Updated 10/04/2011 Made with Xara Web Designer 6