#9 Rebar — Size, Weight, Use-Cases and More

#9 rebar is commonly used in concrete construction for various applications where heavy reinforcement is needed. Some typical uses include:

1. Structural Beams and Columns: Utilized to reinforce structural beams, columns, and other load-bearing elements in buildings, bridges, and other structures to enhance strength and resist bending.
2. Foundation Slabs: Employed in the construction of foundation slabs for residential, commercial, and industrial buildings to provide structural support and stability.
3. Retaining Walls: Utilized in the construction of retaining walls to strengthen the structure and prevent soil erosion or collapse, especially in larger and taller walls.
4. Parking Structures: Used in the construction of parking garages and parking lots to reinforce concrete floors, ramps, and decks subjected to heavy vehicle loads.
5. Bridge Decks: Incorporated into bridge decks and highway structures to reinforce the concrete and ensure durability and longevity under heavy traffic loads.
6. Water and Wastewater Structures: Employed in the construction of water treatment plants, wastewater treatment facilities, and storage tanks to provide reinforcement in concrete structures subjected to environmental conditions and water pressure.
7. High-Rise Buildings: Used in the construction of high-rise buildings to reinforce concrete elements such as shear walls, cores, and slabs to withstand vertical and lateral loads.

Overall, #9 rebar is suitable for a wide range of construction projects requiring heavy reinforcement in concrete structures subjected to significant loads and structural demands.

A #9 rebar (rebar size 9) has the following specifications:

• Diameter: 1.128 inches
• Metric Equivalent Diameter: 28.65 mm

The number "9" in #9 rebar indicates that it is slightly more than 1 inch in diameter. This sizing convention helps in identifying the rebar size based on its number designation.

To determine the weight of #9 rebar per foot, you can refer to standard industry weights for rebar sizes:

• Diameter: 9/8 inch (1.128 inches)
• Weight: 3.4 pounds per foot, or 5.071 kilograms per meter

This means that if you have a length of #9 rebar, you can calculate its weight by multiplying the length in feet by 3.4 pounds per foot.

An Example

For a 10-foot length of #9 rebar:

Weight = 10 feet × 3.4 pounds per foot = 34 pounds

This weight calculation is helpful for estimating the total weight of rebar needed for a project or for making sure you’re compliant with structural design specifications.