To calculate the number of steps in a building with 100 floors, we need to know the number of steps per floor. Typically, the number of steps per floor can vary depending on the design, building code, vertical height of floor and construction of the building. A common estimate is that a floor might have around 13 to 21 steps. Let’s take a mid-range value of 16 steps per floor for this calculation.

So, to find the total number of steps in a 100-floor building with 16 steps per floor, you would multiply the number of floors by the number of steps per floor: 100 floors × 16 steps per floor = 1600 steps. Therefore, there would be approximately 1600 steps in a 100-floor building with 16 steps per floor.

Stairs typically consist of a series of steps that allow people to ascend or descend between different levels in a building or structure. Each step consists of a horizontal tread and a vertical riser. The incline length of one step is about 13 inches if riser height is 7 inches and tread length is 10 inches.

The number of steps on a staircase per floor depends on the vertical height of floor. A typical 8-foot ceiling has 13 to 15 steps, a 9-foot ceiling has 15 to 17 steps, and a 10-foot ceiling has 17 to 19 steps.

The average vertical height of floor depends on ceiling height plus thickness of ceiling drywall, the depth of the upstair floor joists and thickness of flooring materials. The average vertical height of a flight of stairs per floor ranges from 8 1/2 to 11 feet.

If you have a ceiling height of 8 feet, you can assume the total vertical height per floor is about 9 feet. If you have a 10-foot ceiling, you can expect the total vertical height for one floor to be about 11 feet.

In the United States, there are typically 13 to 21 steps (or an average of 16 steps) on one floor of a home. If we assume an average of 16 steps per floor, 100 floors would roughly be equivalent to around 1600 steps (100 floors × 16 steps per floor = 1600 steps).

To calculate the number of steps per floor, you need to multiply the number of floors by 16 steps per floor, e.g. Total number of steps in 10 floors = total number of floors × 16 steps per floor, so 10 × 16 = 160 steps.

The number of steps in a floor can vary depending on various factors, but in general, a standard residential staircase may have around 13 to 21 steps per floor or on average 16 steps per floor, but this can vary widely based on building codes and design choices.

**Here’s are general guidelines for how many steps in different amount of floors:**

- 100 floors of stairs would roughly be equivalent to around 1600 steps (10 floors × 16 steps per floor = 1600 steps).
- 5 floors of stairs would roughly be equivalent to around 80 steps (5 floors × 16 steps per floor = 80 steps).
- 6 floors of stairs would roughly be equivalent to around 96 steps (6 floors × 16 steps per floor = 96 steps).
- 15 floors of stairs would roughly be equivalent to around 240 steps (15 floors × 16 steps per floor = 240 steps).
- 16 floors of stairs would roughly be equivalent to around 256 steps (16 floors × 16 steps per floor = 256 steps).
- 20 floors of stairs would roughly be equivalent to around 320 steps (20 floors × 16 steps per floor = 320 steps).
- 25 floors of stairs would roughly be equivalent to around 400 steps (25 floors × 16 steps per floor = 400 steps).
- 30 floors of stairs would roughly be equivalent to around 480 steps (30 floors × 16 steps per floor = 480 steps).
- 40 floors of stairs would roughly be equivalent to around 640 steps (40 floors × 16 steps per floor = 640 steps).
- 45 floors of stairs would roughly be equivalent to around 720 steps (45 floors × 16 steps per floor = 720 steps).
- 50 floors of stairs would roughly be equivalent to around 800 steps (50 floors × 16 steps per floor = 800 steps).
- 60 floors of stairs would roughly be equivalent to around 960 steps (60 floors × 16 steps per floor = 960 steps).
- 70 floors of stairs would roughly be equivalent to around 1120 steps (70 floors × 16 steps per floor = 1120 steps).
- 80 floors of stairs would roughly be equivalent to around 1280 steps (80 floors × 16 steps per floor = 1280 steps).
- 120 floors of stairs would roughly be equivalent to around 1920 steps (120 floors × 16 steps per floor = 120 steps).

**Conclusions:**

Generally, there are 16 steps per floor of stairs, so 100 floors would be approximately 1600 steps, 5 floors would be 80 steps, 15 floors would be 240 steps, 20 floors would be 320 steps, and 10 floors would be 160 steps.