SubscribeThis article concerns foundation casting for the Lattix® Aviation System frangible airport masts
- Excavate a pit for foundation, make form (shuttering)
- Anchor bolts (3 for triangular, 4 for square masts) shall be caste in the pit. In order to get the right position one template is delivered to each type of mast. The anchor bolts are mounted on the template with nuts and washers, thus keeping them in correct position
- The anchor bolts shall be mounted to allow 100 mm of the bolt to be visible over the surface of the template (the smallest mast, 3320) and 110 mm for all other masts.
- The bolts shall be firmly fastened to the template, they shall be parallel to each other and perpendicular to the template.
- The template shall be positioned in the excavated foundation pit.
- The underside of the template should be positioned about 50 mm (2 ") above the finished concrete. The easiest way to do this is to lay a couple of 2" logs across the pit and let the template ride on these.
- Fill the pit with concrete
- When the concrete has cured, remove the template and use it in the next pit. Leave the lower nut and washer mounted on the bolts, they will be the lower support for the mast later on.
NOTE: Observe that triangular masts can be mounted either with the corner of the mast or the side of the mast facing the runway. From a technical point of view the positioning does not matter, but notice the position of the hinge if any (along one side of the triangular mast) if you want the mast to swing in one particular direction.
Please click here for assembly instructions for the Lattix aluminium light masts
