Calculate Wall Bracing - Part 5 - Design Bracing Systems - Nominal Bracing - Wind Direction 2

Summary

In this fifth installment of the 'Buildsum' series, the focus is on calculating nominal wall bracing for Wind Direction 2. The tutorial demonstrates how to determine the effective length of walls that resist wind load, accounting for windows and panels shorter than 450mm. It calculates the bracing capacity for single and double-sided walls, revealing that nominal bracing provides 14.409 kN of resistance, over half the required 20.254 kN. The video concludes by determining the remaining bracing needed for Wind Direction 2, with a promise to explore further in the next episode.

Takeaways

• 🏗️ The video is part of a series on calculating wall bracing, focusing on Wind Direction 2.
• 💨 The wind is blowing against the building, and walls running in the same direction as the wind will resist the load.
• 📏 The script calculates the effective length of walls by subtracting the cavity, brickwork, and window openings.
• 🔢 For walls sheeted on one side only, the total effective length is 12.120m after adjustments.
• 📉 The bracing capacity for single-sided walls is 0.45, resulting in 5.45 kN of bracing for Wind Direction 2.
• 🚪 For double-sided walls, the effective bracing length is calculated after removing doorways, resulting in 8.955 kN of resistance.
• 📈 The total resistance from nominal bracing in Wind Direction 2 is 14.409 kN.
• 🔍 The original requirement for Wind Direction 2 was 20.254 kN of resistance, and nominal bracing provides more than half of that.
• 🚫 Nominal bracing can only be used for up to 50% of the required resistance, so additional bracing is needed.
• 🧩 The script concludes by determining that 10.127 kN of bracing is still required in Wind Direction 2.
• 📺 The presenter invites viewers to subscribe to the YouTube channel or follow on Facebook for more content.

Q & A

What is the main topic of this video?

The main topic of this video is calculating wall bracing, specifically focusing on nominal bracing from Wind Direction 2.

What is Wind Direction 2 in the context of this video?

In this video, Wind Direction 2 refers to the direction from which the wind is blowing against the side of the building.

Why are walls running in the same direction as the wind important?

Walls running in the same direction as the wind are important because they are the ones that resist the load and provide bracing.

How does the presenter calculate the effective length of the wall for bracing purposes?

The presenter calculates the effective length of the wall by subtracting the cavity, brickwork, and window openings from the total length of the wall.

What is the total effective length of the walls considered in the example?

The total effective length of the walls considered in the example is 12.120 meters.

What is the bracing capacity for nominal bracing single sided?

The bracing capacity for nominal bracing single sided is 0.45.

How much bracing in kN is calculated for Wind Direction 2 for single sided walls?

The calculated bracing for Wind Direction 2 for single sided walls is 5.45 kN.

What adjustments are made for double sided walls in terms of effective bracing area?

For double sided walls, adjustments are made by subtracting the areas occupied by doorways from the total wall length to determine the effective bracing area.

What is the total resistance in kN provided by the nominal bracing for Wind Direction 2?

The total resistance provided by the nominal bracing for Wind Direction 2 is 14.409 kN.

What is the remaining bracing requirement after considering the nominal bracing for Wind Direction 2?

After considering the nominal bracing, the remaining bracing requirement for Wind Direction 2 is 10.127 kN.

What is the limitation on the use of nominal bracing in the context of this video?

In the context of this video, nominal bracing can only be used for up to 50% of the total required bracing.