Construction method

Use the Construction method to create construction objects from existing nodes and graphic elements.

  1. Tap .

    If you do not see this button in the Survey method bar, drag left across the Survey method bar to view more buttons.

  2. Create the first required construction object, from the buttons on the Construction toolbar:

    Tap... To create a construction...

    Line parallel to another line

    Line perpendicular to another line

    Line intercepting another line at an oblique angle

    Line defined by bearing

    Circle

    When you create the first construction object, for example a parallel line, it appears in green on the map.

  3. Create the second required construction object.

    When you accept the second construction object, for example, a perpendicular line, it appears in green on the map and Penmap creates construction nodes at all intersection points. For example, one construction node at the intersection of the parallel line and the perpendicular line is created.

  4. Continue creating construction objects as required.

    Each time you accept a new construction object, construction nodes are created at the intersection points.

  5. When you have created all the required nodes, tap to exit the Construction method.

    The construction lines disappear from the map, leaving only the new construction nodes.

  6. Use the Snap node method to assign the construction nodes to features.

 

  • When creating construction lines, sometimes there is a choice of position for the object. Tap the map to toggle between the alternative positions. The construction line is created in the position shown when you tap .
  • To exit the selected construction type at any time, tap .

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  1. Tap .

  2. Select the two reference nodes that define the construction line: tap and then tap the first node, then tap and tap the second node.

    The construction line appears on the map.

  3. Do one of the following:
    • To enter the offset distance, tap . The construction line moves by the distance you entered. To move the construction line in the opposite direction, tap the map. Tap the map again to toggle between the alternative positions for the construction line.
    • Tap and then tap the node that the construction line should pass through.
  4. Tap to create the construction line.

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  1. Tap .

  2. Select the two reference nodes that define the construction line: tap and then tap the first node, then tap and tap the second node.

    The construction line appears on the map.

  3. Do one of the following:
    • To enter the offset distance, tap . The construction line moves by the distance you entered. To move the construction line in the opposite direction, tap the map. Tap the map again to toggle between the alternative positions for the construction line.
    • To use the middle point between node 1 and node 2, touch‑hold . The button changes to . Tap . The construction line moves to the middle point between the two nodes.
  4. Tap and then tap the node that the construction line should pass through.
  5. Tap to create the construction line.

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  1. Tap .

  2. Select the two reference nodes that define the construction line: tap and then tap the first node, then tap and tap the second node.

    The construction line appears on the map.

  3. Do one of the following:
    • To enter the offset distance, tap . The construction line moves by the distance you entered. To move the construction line in the opposite direction, tap the map. Tap the map again to toggle between the alternative positions for the construction line.
    • To use the middle point between node 1 and node 2, touch‑hold to change the button to . Tap . The construction line moves to the middle point between the two nodes.
  4. Tap to enter the angle of the construction line.
  5. Tap to create the construction line.

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This is method is useful for determining a feature position using two compass readings to two reference nodes (known as a resection).

  1. Tap .
  2. Tap and then tap the node on the map to use as the reference node.
  3. Tap and then enter the azimuth value to the reference node.
  4. Tap to create the construction line.

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  1. Tap .

  2. To define the circle by:

    1. Tap .
    2. Tap and then tap the node to use as the reference node.
    3. Tap and enter the radius.
    1. Tap .
    2. Tap and then tap the first node to use as the reference node.
    3. Tap and select the second node.
    4. Tap and enter the radius.
    1. Tap .
    2. Tap and then tap the first node to use as the reference node.
    3. Tap and select the second node.
    4. Tap and select the third node.
  3. Tap to create the construction circle.

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