Deck Replacement

Project Overview

Location: Colorado Springs, Colorado Type: Residential Deck Replacement

Decks are among the most structurally vulnerable elements of a residential building. Exposed to the elements year-round and often constructed without permits or engineering review, aging decks frequently exhibit deterioration, inadequate connections, and undersized framing that creates real safety risk. This project replaced a deteriorated deck with a properly engineered structure designed to current code standards.

Why Decks Fail

Deck failures (including partial and complete collapses) are disproportionately common compared to other residential structural failures. The most frequent causes are:

Ledger connection failure: The connection between the deck and the house is the single most critical joint in the deck structure. It must resist the full gravity load of the deck and all occupants, plus the overturning forces of guardrails being pushed outward. Improperly flashed ledgers rot the rim joist of the house; undersized fasteners fail under load.

Post-to-beam connections: Posts bearing on inadequate footings or connected to beams with only toenails can tip over under lateral load: people pushing against guardrails, wind, or seismic activity.

Guardrail attachment: Guardrails must resist 200-pound concentrated loads applied horizontally at the top. Many existing residential guardrails are attached with a few screws to the deck framing and would fail under this test load.

Replacement Design

The replacement deck was designed from the ground up: new concrete footings sized for the tributary load, new posts with code-compliant base hardware, engineered beam and joist sizing for the span and load conditions, a fully detailed ledger connection with appropriate lag bolt pattern and flashing, and a guardrail system designed and attached to meet current code force requirements.

Ready to Talk Through Your Project?

Frontier Structural Engineering brings 20 years of commercial and residential design experience to projects across Colorado and California. Whether you're in schematic design or already in the field, we're available.