---
title: "Fixed or adjustable bracket installation"
id: "25372"
type: "post"
slug: "fixed-or-adjustable-bracket-installation"
published_at: "2022-08-22T15:50:02+00:00"
modified_at: "2025-11-27T13:44:08+00:00"
url: "https://www.technometalpost.com/en-US/fixed-or-adjustable-bracket-installation/"
markdown_url: "https://www.technometalpost.com/en-US/fixed-or-adjustable-bracket-installation.md"
excerpt: "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..."
taxonomy_category:
  - "Articles"
---

August 22, 2022

# Fixed or adjustable bracket installation

![Image](https://www.technometalpost.com/wp-content/uploads/00-article-installation-tete.jpg)

## Bracket with screw sets

  ![Image](/wp-content/uploads/image1-300x265.png)

  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

  ![Image](/wp-content/uploads/image2-276x300.png)

 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.

  | UCAN Self-drilling Screws Allowable uplift resistance (lb) between the pile cap and the pile |  |  |  |  |
| --- | --- | --- | --- | --- |
| Screw size | Point | Resistance for 2 screws | Resistance for 3 screws | Resistance for 4 screws |
| 12-24 | #5 | 2 000 lb | 3 000 lb | 4 000 lb |

  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.

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