how to drill concrete with steel bar in it with SDS drill bit?

Drilling holes in concrete that contains rebar can be challenging, but it is possible with the right tools and techniques. Here is a step-by-step guide on how to drill using an SDS drill and the appropriate drill bit:

Tools and Materials Required:
1. SDS Drill Bit: Rotary hammer drill with SDS chuck.
2. SDS Drill Bit: Use a carbide drill bit to cut through concrete. If you encounter rebar, you may need a specialized rebar cutting drill bit or a diamond drill bit.
3. Safety Gear: Safety glasses, dust mask, gloves, and hearing protection.
4. Hammer: If you need to break up the concrete after hitting the rebar, a hand hammer may be necessary.
5. Water: If using a diamond drill bit, used to cool the drill bit.

Steps for drilling concrete with rebar:

1. Mark Location: Clearly mark the location where you want to drill the hole.

2. Choose the right bit:
- Start with a standard carbide masonry drill bit for concrete.
- If you encounter rebar, switch to a rebar cutting drill bit or a diamond drill bit designed for concrete and metal.

3. Setup Walkthrough:
- Insert the SDS drill bit into the SDS chuck and ensure it locks securely into place.
- Set the drill to hammer mode (if applicable).

4. Drilling:
- Place the drill bit on the marked spot and apply steady pressure.
- Start drilling at a slow speed to create the pilot hole, then increase the speed as you drill deeper.
- Keep the drill bit perpendicular to the surface to ensure a straight hole.

5. Monitoring steel bars:
- If you feel resistance or hear a different sound, you may have hit rebar.
- If you hit rebar, stop drilling immediately to avoid damaging the drill bit.

6. Switch bits if necessary:
- If you encounter rebar, remove the masonry drill bit and replace it with a rebar cutting drill bit or a diamond drill bit.
- If using a diamond drill bit, consider using water to cool the drill bit and reduce dust.

7. Continue drilling:
- Continue drilling with the new drill bit, applying steady pressure.
- If using a hammer, you may need to tap the drill bit lightly with the hammer to help it penetrate the rebar.

8. Clear the debris:
- Pull the drill bit out periodically to clear debris from the hole, which aids cooling and increases efficiency.

9. Finish the hole:
- Once you have drilled through the rebar and into the concrete, continue drilling until you reach the desired depth.

10. Cleaning:
- Clear all dust and debris from the area and inspect the hole for any irregularities.

Safety Tips:
- Always wear safety glasses to protect your eyes from flying debris.
- Use a dust mask to avoid breathing concrete dust.
- Make sure your work area is well ventilated.
- Be careful of electrical wires or pipes that may be embedded in the concrete.

By following these steps and using the right tools, you can successfully drill through concrete that has rebar in it.