{"id":33803,"date":"2026-04-27T13:03:09","date_gmt":"2026-04-27T13:03:09","guid":{"rendered":"https:\/\/protasoftware.com\/technical-manuals\/structural-modelling\/working-with-steel-dome\/"},"modified":"2026-06-19T12:37:44","modified_gmt":"2026-06-19T12:37:44","slug":"working-with-steel-dome","status":"publish","type":"wiki","link":"https:\/\/protasoftware.com\/wiki\/working-with-steel-dome\/","title":{"rendered":"Working With Steel Dome"},"content":{"rendered":"
Steel Dome<\/span> Structure can be easily created using the "Steel Dome" function in the "Modelling" tab.<\/span><\/span><\/div>\n

Defining a New Dome
<\/span><\/h1>\n
To define a steel dome :
<\/span><\/div>\n
    \n
  1. Go to "Modelling" tab > Steel Dome
    <\/span><\/li>\n
  2. Select the dome insertion point diagonally (select the diameter of the dome).<\/span>
    <\/li>\n
  3. Double click the dome to access its properties to adjust the parameters.  <\/span><\/li>\n<\/ol>\n

    Properties
    <\/span><\/h1>\n

    Geometry
    <\/span><\/h2>\n
    In \u201cGeometry" tab, user can adjust the size and add on different frame types to the dome.<\/span><\/div>\n
    <\/p>\n
    <\/div>\n<\/div>\n
      \n
    1. General<\/span><\/u> : <\/span><\/b>
      <\/span><\/li>\n
        \n
      1. Support Radius :<\/span><\/b> Dome radius is calculated based on the insertion of the dome and not editable in the properties.
        <\/span><\/li>\n
      2. Dome Height :<\/span><\/b> To set the height of the dome.
        <\/span><\/li>\n
      3. del-Z :  <\/span><\/b>To change the elevation of the beam, i.e. to lower or raise it from default.<\/span><\/li>\n<\/ol>\n
      4. Crown Frames<\/span><\/u> : <\/span><\/b>Indicated in Purple by Default.<\/span><\/li>\n
          \n
        1. Add Crown Frames :<\/span><\/b> To add the circular end frame at the tip of the dome. 
          <\/span><\/li>\n
        2. Crown Type :<\/span><\/b> To segmentize the crown frame based on the longitudinal frames or to have a single crown ring.
          <\/span><\/li>\n
        3. Crown Radius : <\/span><\/b>To set the radius of the crown frame. This value will be responsive to the changes made in "Crown Height".<\/span><\/li>\n
        4. Crown Height :<\/span><\/b> To set the crown frame offset from the top of the dome. This value will be responsive to the changes made in "Crown Radius"<\/span><\/li>\n<\/ol>\n
        5. Longitudinal Frames<\/span><\/u> : <\/span><\/b>Indicated in Yellow by Default.<\/span><\/li>\n
            \n
          1. Longitudinal Span Count :<\/span><\/b> To set the number of the longitudinal frame.
            <\/span><\/li>\n
          2. Add Longitudinal Frames :<\/span><\/b> Option to provide longitudinal frame in the dome structure.
            <\/span><\/li>\n
          3. Longitudinal Type :<\/span><\/b> To segmentize the longitudinal frame based on the latitude frames or to have a single crown ring.<\/span><\/li>\n<\/ol>\n
          4. Latitude Frames<\/span><\/u> :<\/span><\/b> Indicated in Green by Default.
            <\/span><\/li>\n
              \n
            1. Latitude Span Count :<\/span><\/b> To set the number of the latitude frame.<\/span><\/li>\n
            2. Add Latitude Frames : <\/span><\/b>Option to provide latitude frame in the dome structure.<\/span><\/li>\n<\/ol>\n
            3. Support Frames<\/span><\/u> :<\/span><\/b> Indicated in Red by Default.
              <\/span><\/li>\n
                \n
              1. Add Support Frames :<\/span><\/b> Option to provide support frame in the dome structure.<\/span><\/li>\n<\/ol>\n
              2. Claddings<\/span><\/u> : <\/span><\/b>
                <\/span><\/li>\n
                  \n
                1. Add Claddings :<\/span><\/b> Option to provide cladding in the dome structure.<\/span><\/li>\n<\/ol>\n<\/ol>\n

                  Braces & Purlins
                  <\/span><\/h2>\n
                  In "Braces & Purlins" tab, user can adjust the <\/span>alignment pattern and number of the bracings and the purlins.<\/span><\/span><\/div>\n
                  \u200b<\/span><\/div>\n
                  <\/div>\n
                    \n
                  1. Braces<\/span><\/u> :<\/span><\/b> Indicated in Light Blue by Default<\/span><\/li>\n
                      \n
                    1. Add Brace Frames : <\/span><\/b>Option to provide bracing in the dome structure.
                      <\/span><\/li>\n
                    2. Brace <\/span><\/b>Fill Type :<\/span><\/b>  To select the fill type of the bracing.
                      <\/span>
                      <\/span><\/li>\n
                    3. Brace Fil Text :<\/span><\/b> This only triggers on when "Brace Fill Type" = "Custom". To set brace pattern manually by using text pattern :
                      <\/span><\/li>\n
                        \n
                      1. X = Double Bracing, = Single Bracing (slash to right), \/ = Single Bracing (slash to left), – = No Bracing<\/span><\/li>\n

                      2. <\/span><\/li>\n<\/ol>\n
                      3. Longitudinal Fill Type : <\/span><\/b>To fill brace pattern based on longitudinal frame.<\/span>
                        <\/li>\n
                      4. Custom Longitudinal Fill Type Text<\/span><\/b> : This only triggers on when "Longitudinal Fill Type" = "Custom". To set brace pattern manually by using text pattern :
                        <\/span><\/li>\n
                          \n
                        1. X = Provide Bracing, – = No Bracing
                          <\/span><\/li>\n
                        2. Alternatively, use the table checkbox to modify, then click the blue triangle <\/span> to refresh the display.<\/span><\/li>\n<\/ol>\n<\/ol>\n
                        3. Purlins<\/span><\/u> :<\/span><\/b> Indicated in Dark Blue by Default<\/span><\/li>\n
                            \n
                          1. Add Purlin Frames : <\/span><\/b>Option to provide purlin in the dome structure.<\/span><\/li>\n
                          2. Purlin Span Count :<\/span><\/b> To set the number of the purlin. This number consider the number of the "Purlin On Latitudes" no matter it is ticked or not.<\/span><\/li>\n
                          3. Add Purlin On Latitudes :<\/span><\/b> Option to provide purlin on Latitudes frame (Green).<\/span><\/li>\n<\/ol>\n<\/ol>\n

                            Sections
                            <\/span><\/h2>\n
                            In "Sections" tab, user can acquire the section properties and change the section size and its alignment.<\/span><\/div>\n
                            <\/div>\n
                            <\/div>\n
                              \n
                            1. Section Properties<\/span><\/u> : <\/span><\/b>To show the parameters and properties of the selected section in table format.<\/span><\/li>\n
                            2. Section Selection & Alignment<\/span><\/u> :<\/span><\/b> To select the section size and assign eccentricity and offset when necessary.<\/span><\/li>\n<\/ol>\n

                              End Releases<\/span>
                              <\/span><\/h2>\n
                              In "End Releases" tab, user can set the end condition of each members in the dome structure.<\/span><\/div>\n
                              <\/div>\n
                                \n
                              1. When a member in the table has been selected, it will be highlighted in the 3D display and vice-versa. <\/span><\/li>\n
                              2. I represent the left \/ top end of the member, while J represent the right \/ bottom end of the member.<\/span>
                                <\/span><\/li>\n
                              3. A purple cube represents the end is hinged\/pinned.<\/span><\/li>\n<\/ol>\n
                                <\/div>\n","protected":false},"excerpt":{"rendered":"

                                Steel Dome Structure can be easily created using the "Steel Dome" function in the "Modelling" tab. Defining a New Dome To define a steel dome : Go…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":{"_whitepaper_youtube_videos":"","_whitepaper_youtube_url":"","_whitepaper_youtube_thumbnail":"","footnotes":""},"categories":[185],"whitepaper_topic":[],"whitepaper_product":[],"whitepaper_type":[],"class_list":["post-33803","wiki","type-wiki","status-publish","hentry","category-structural-modelling"],"yoast_head":"\nWorking With Steel Dome - Prota Software<\/title>\n<meta name=\"description\" content=\"Steel Dome Structure can be easily created using the "Steel Dome" function in the "Modelling" tab.Defining a New DomeTo\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/protasoftware.com\/wiki\/working-with-steel-dome\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Prota Software\" \/>\n<meta property=\"og:description\" content=\"Steel Dome Structure can be easily created using the "Steel Dome" function in the "Modelling" tab.Defining a New DomeTo\" \/>\n<meta property=\"og:url\" content=\"https:\/\/protasoftware.com\/wiki\/working-with-steel-dome\/\" \/>\n<meta property=\"og:site_name\" content=\"Prota Software\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-19T12:37:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/protasoftware.com\/wp-content\/uploads\/2026\/04\/prota-doc-9cf747f57152e237785a9a10a54e84eb.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Prota Software\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/protasoftware.com\\\/wiki\\\/working-with-steel-dome\\\/\",\"url\":\"https:\\\/\\\/protasoftware.com\\\/wiki\\\/working-with-steel-dome\\\/\",\"name\":\"Working With Steel Dome - 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