Bar Bending Schedule of Footing - Estimates - Quantity Survey Estimation and Valuation

TL;DR

This video presents a step-by-step calculation process and bar bending schedule for a footing, including quantity and weight of steel.

Transcript

hello everyone in this video we are going to see numerical on bbs of footing so let's see first the problem statement a footing of overall size 2000 mm by 1500 mm and depth 300 mm is provided with 10 mm diameter main bars placed at 150 mm center to center and the distribution steel is of 8 mm diameter and it is provided at 200 mm center to center s... Read More

Key Insights

• 🤢 The calculations and bar bending schedule are based on given dimensions and specifications for a footing.
• 🤢 The length and number of main bars are determined by subtracting the cover and dividing by the spacing.
• 🤢 The length and number of distribution bars are calculated using a similar method as the main bars.
• 🤒 The weight of the bars per meter is calculated using the formula: diameter square divided by 162.
• 🤢 The total weight of the steel for the footing is the sum of the weight of the main bars and distribution bars.
• 🤢 The video emphasizes the importance of accurate calculations and bar bending schedules in the construction of footings.
• 🫵 It provides a clear demonstration of the step-by-step process, making it easier for viewers to understand and replicate.

Questions & Answers

Q: What is the purpose of a bar bending schedule?

A bar bending schedule provides a detailed plan for the fabrication of reinforcement bars, including their length, shape, and placement. It aids in the construction process and ensures proper reinforcement.

Q: How is the length of the main bars calculated?

The length of the main bars is calculated by subtracting the cover from the total length and adding the hook length on both ends. The formula is: total length - (2 * cover) + (2 * 9 * diameter).

Q: How is the number of main bars determined?

The number of main bars is calculated by dividing the width of the footing (minus the cover) by the spacing of the bars, and then adding one. This provides the number of evenly spaced bars.

Q: What is the purpose of distribution steel in a footing?

Distribution steel in a footing helps evenly distribute the load across the structure and reinforce against cracking. It is typically placed at a greater spacing than the main bars.

Summary & Key Takeaways

• The video explains how to calculate the length and number of main bars and distribution steel for a footing.

• It provides a detailed demonstration of the calculations using given dimensions and specifications.

• The bar bending schedule and quantity of steel are determined based on the calculations.