Fixed or adjustable bracket installation

Bracket with screw sets

The pile cap, otherwise known as the plate (fixed or adjustable) sits directly on the shaft below it.  The 4 set screws will be bolted and tightened, with a minimum of 15 ft-lb of torque using a hexagonal key.  For the adjustable cap, a fifth screw needs to be installed, to prevent lateral movement of the threaded rod.

Bracket with self-drilling screws

A sleeve is attached to the shaft of the pile using self-drilling screws (a minimum of two or three screws is required, see below).  Techno Metal Post recommends using the following product or equivalent:

• UCAN (model TRH 12114K5) self-drilling screws (or any equivalent brand);
• Size 12-24;
• Length 1.25” (32 mm);
• Drill point #5 in galvanized steel.

The allowable uplift resistance varied (lb) between the pile cap and the pile during the laboratory test.

Please note that for deck piles and building additions, we recommend using a minimum of 2 self-drilling screws.  For piles supporting a structure with a roof and no floor (carport, pergola, etc.), we recommend using a minimum of 3 self-drilling screws.  The connection of the supported infrastructure may limit the uplifting force.

The use of an adjustable pile cap must be avoided for free-standing structures with a roof (carport, pergola, etc) given the presence, of greater lateral and uplift loads.