Where Is Decking Height Measured From

Where is Decking Height Measured From? A Comprehensive Guide

Decking adds significant value and enjoyment to any home, extending living space and creating an outdoor oasis. However, correctly determining decking height is crucial for safety, accessibility, and overall structural integrity. This guide clarifies exactly where decking height is measured from and explores the factors influencing this crucial measurement.

Understanding Decking Height: More Than Just a Number

Decking height isn't a simple, single measurement. It depends on several factors, including local building codes, intended use, and the surrounding landscape. Understanding these nuances is essential for a safe and compliant installation. This article will cover the different perspectives and considerations involved in accurately determining the correct decking height for your project.

Measuring from Finished Grade: The Standard Approach

The most common and generally accepted method for measuring decking height is from the finished grade. This refers to the final level of the ground surrounding your deck, after any landscaping or grading has been completed. This measurement should be taken at the point where the deck's support posts or piers meet the ground. Consistency is key; take multiple measurements at various points around the perimeter to account for any slope or unevenness in the ground.

Important Considerations:

• Local Building Codes: Always check your local building codes and regulations before commencing any construction. These codes often specify minimum and maximum deck heights, influencing your measurements and design choices.
• Accessibility: If you plan on using your deck for wheelchair access, you'll need to adhere to ADA (Americans with Disabilities Act) guidelines, which dictate specific height requirements for ramps and landings.
• Surrounding Terrain: The natural slope of your yard will impact the finished grade, necessitating careful consideration of drainage and potential leveling work.
• Deck Design: The type of deck design (e.g., elevated, ground-level, multi-level) significantly impacts where and how you measure the height. Multi-level decks will require multiple height measurements.
• Structural Integrity: The height of your deck influences the size and spacing of support posts and beams. A higher deck will generally require more robust structural support.

Measuring from Other Reference Points: Special Circumstances

While the finished grade is the standard, other reference points might be relevant in specific situations:

• Existing Structures: If your deck is attached to an existing structure, you might measure from the finished floor level of that structure for consistency and ease of access.
• Specific Design Requirements: Architectural plans might specify measurements from a specific point, such as a particular foundation element. Always adhere to the detailed specifications outlined in these professional documents.

Tools for Accurate Measurement: Ensuring Precision

Accurate measurements are paramount for a safe and structurally sound deck. Employing the right tools is essential:

• Measuring Tape: A high-quality measuring tape is your primary tool, ensuring precise measurements of both height and other critical dimensions.
• Level: A spirit level helps verify that your deck's support structure is perfectly level, contributing to stability and longevity.
• Surveyor's Level: For more complex terrain or larger projects, a surveyor's level provides increased accuracy in determining the finished grade.

By understanding where to measure decking height and considering the various influencing factors, you can ensure a safe, structurally sound, and code-compliant deck that enhances your home and outdoor living experience. Remember to always consult with professionals and adhere to local building regulations for a successful project.