Understanding Joists: Notching and Drilling

The video tutorial explains the importance of joists in supporting floors and the regulations for notching and drilling them. It details how notches and holes can weaken joists and provides guidelines to prevent structural failure. The tutorial also includes calculations for maximum notch depth and hole size based on joist dimensions. Viewers are encouraged to follow the channel on social media for updates.

Why is it important to follow regulations when cutting notches or holes in joists?

• To ensure the joist remains aesthetically pleasing

• To reduce the cost of construction

• To make it easier for engineers to work

• To prevent weakening the joist to the point of collapse

What is the maximum depth of a notch for a 200mm deep joist?

• 20 millimeters

• 25 millimeters

• 30 millimeters

• 35 millimeters

What percentage of the joist's depth is the maximum allowable for a notch?

• 15%

• 20%

• 10%

• 12.5%

Where should notches not be placed on a joist?

• In the first 7% of the span

• At the end of the joist

• Anywhere along the joist

• In the middle of the joist

What is the highlighted color for the area where notches can be cut?

• Red

• Blue

• Green

• Yellow

What is the maximum diameter of a hole that can be drilled in a 150mm deep joist?

• 30 millimeters

• 35 millimeters

• 37.5 millimeters

• 40 millimeters

How far apart must holes be drilled in a joist?

• At least two diameters apart

• At least three diameters apart

• At least four diameters apart

• At least five diameters apart

In which part of the joist should holes be drilled?

• At the bottom of the joist

• At the top of the joist

• Anywhere along the joist

• In the center of the depth of the joist

What is the highlighted color for the area where holes can be drilled?

• Green

• Blue

• Red

• Yellow

How can you stay updated with new calculators and information from the trainer?

• By visiting their website regularly

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• By attending their live workshops