SOLUTION: How do i establish a 52degree angle of of a baseline? Painting lines in a parking lot and they need to be 52 degee angle from the curbline

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Question 1209965: How do i establish a 52degree angle of of a baseline?
Painting lines in a parking lot and they need to be 52 degee angle from the curbline

Answer by CPhill(1959)   (Show Source): You can put this solution on YOUR website!
Establishing a precise 52-degree angle for parking lot lines can be done with a few methods, ranging from simple to more advanced. Here's a breakdown:
**1. Simple Protractor Method (Less Precise, Good for Small Areas):**
* **Tools:**
* Large protractor or angle finder
* Measuring tape
* Chalk or marking paint
* **Steps:**
1. **Establish Baseline:** Accurately mark your curbline as the baseline.
2. **Mark a Point:** Choose a starting point along the curbline.
3. **Use Protractor:** Place the center of the protractor at the marked point, aligning the 0-degree line with the curbline.
4. **Mark the Angle:** Find the 52-degree mark on the protractor and make a small mark on the ground.
5. **Create Line:** Use the marked point and the 52-degree mark to draw a line with chalk or marking paint.
6. **Repeat:** Repeat this process at various points along the curbline to create parallel lines.
* **Limitations:** This method is prone to errors, especially over longer distances. Small inaccuracies in the protractor placement will accumulate.
**2. Trigonometry and Measuring (More Precise):**
* **Tools:**
* Measuring tape (long)
* Calculator (with trigonometric functions)
* Chalk or marking paint
* String line or straight edge
* **Steps:**
1. **Establish Baseline:** Accurately mark your curbline.
2. **Mark a Point:** Choose a starting point along the curbline.
3. **Measure a Distance:** Measure a known distance along the curbline from the starting point (e.g., 10 feet).
4. **Calculate Offset:** Use the tangent function to calculate the offset distance.
* `offset = distance * tan(52 degrees)`
* tan(52) is about 1.2799. So for every 10 foot of baseline, the offset is about 12.8 feet.
5. **Mark Offset:** Measure the calculated offset distance perpendicular to the curbline and mark the point.
6. **Create Line:** Connect the starting point on the curbline with the offset point to create the 52-degree line.
7. **Repeat:** Repeat this process at various points along the curbline, ensuring the offset measurements are consistently perpendicular.
* **Advantages:** This method is more accurate than the protractor method, especially for longer lines.
**3. Using a Transit or Theodolite (Highly Precise):**
* **Tools:**
* Transit or theodolite (surveying equipment)
* Tripod
* Measuring tape
* Chalk or marking paint
* **Steps:**
1. **Set Up Transit:** Set up the transit on a tripod at a starting point.
2. **Establish Baseline:** Align the transit with the curbline.
3. **Set Angle:** Set the transit to 52 degrees.
4. **Mark Points:** Use the transit's line of sight to mark points at intervals along the 52-degree line.
5. **Create Line:** Connect the marked points with chalk or marking paint.
6. **Repeat:** Move the transit and repeat the process for other lines.
* **Advantages:** This method is the most accurate, as transits and theodolites are designed for precise angle measurements.
**4. Using a Construction Laser with Angle Capabilities (Precise and Efficient):**
* **Tools:**
* Construction laser with angle setting capabilities.
* Tripod.
* Measuring tape.
* Marking paint.
* **Steps:**
1. **Set up laser:** Set up laser on tripod.
2. **Establish Baseline:** Align the laser with the curbline.
3. **Set Angle:** Set the laser to 52 degrees.
4. **Mark Lines:** The laser will project a line at the correct angle, which you can then mark.
5. **Repeat:** Move the laser as needed.
* **Advantages:** Very accurate and fast.
**Important Considerations:**
* **Accuracy:** For parking lot lines, a moderate level of accuracy is usually sufficient. However, for critical applications, use a transit or laser.
* **Safety:** Wear appropriate safety gear, such as safety glasses and high-visibility clothing.
* **Weather:** Wind and rain can affect accuracy, especially when using string lines or lasers.
* **Local Regulations:** Check local regulations for parking lot line specifications.
For most parking lot applications the trigonometry method or a construction laser will work very well.

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