Field Construction Shimming Process & Procedures

Shimming is a fundamental process in field construction that ensures equipment, piping, and structural elements are properly aligned and leveled. This guide covers the complete shimming workflow from measurement to documentation.

The Shimming Process Overview

1. Pre-installation survey and measurement
2. Gap analysis and shim thickness calculation
3. Shim material selection and preparation
4. Shim installation and positioning
5. Post-installation verification and measurement
6. Documentation and record keeping

Field Shimming Methods

Precision Shimming

Uses calibrated shim stock in precise thicknesses for critical alignment applications. Common in rotating equipment and precision piping installations.

Rough Shimming

Uses thicker plate shims for initial elevation setting. Rough shimming establishes approximate elevation before precision shimming brings everything to final tolerance.

Tapered Shimming

Uses wedge-shaped shims to compensate for sloped or uneven support surfaces. Tapered shims create a level bearing surface on angled structural steel.

Common Field Shimming Challenges

• Uneven or damaged support surfaces requiring extra preparation
• Temperature variations affecting measurements during installation
• Limited access in congested pipe racks and confined spaces
• Maintaining shim stack stability during pipe loading

Document Field Shimming with ShimSheet

ShimSheet is purpose-built for field construction crews. Record shim data on-site from any mobile device, even offline. Sync when connected and generate professional reports for QC handover.