{"id":1442,"date":"2026-03-02T09:27:03","date_gmt":"2026-03-02T08:27:03","guid":{"rendered":"https:\/\/glassfiber.wpenginepowered.com\/?post_type=fagartikler&p=1442"},"modified":"2026-05-13T12:27:12","modified_gmt":"2026-05-13T10:27:12","slug":"load-calculator","status":"publish","type":"fagartikler","link":"https:\/\/glassfiber.no\/en\/fagartikler\/lastkalkulator\/","title":{"rendered":"How to use our load calculator"},"content":{"rendered":"
\n

You don't have to be a math expert to use our load calculator<\/a>.
This guide will help you get started so you can calculate what dimensions you need for your project.<\/strong><\/p>\n\n\n\n

<\/p>\n\n\n\n

\n\n\n\n

NB: Please note that the result of the strength calculation only applies to the selected profile. When dimensioning structures with different profiles, strength calculation must be performed for the entire structure.<\/strong><\/p>\n<\/div><\/div>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Make good choices for your project<\/strong><\/h3>\n\n\n\n

Our load calculator is designed to give you the information you need to make a good choice when it comes to sizing your project.<\/p>\n\n\n\n

The calculator allows you to test all of our structural profiles in a variety of different usage scenarios.<\/p>\n\n\n\n

You choose the profile dimensions and the load conditions you want to take into account.<\/p>\n\n\n\n

Understanding the load calculator<\/strong><\/h3>\n\n\n\n

1. Profile selection<\/strong>
Here you select the type of profile you want to analyze.<\/p>\n\n\n\n

2. Dimension<\/strong>
Here you select the dimensions of the selected profile type. Dimensions are given in mm as H-height, B-width and T-thickness, in the menu our available and stocked profiles are listed.<\/p>\n\n\n\n

3. E-modulus (MPa)<\/strong>
E-Modulus(MPa) is the unit of elasticity that describes the stiffness of the profile. For our fiberglass profiles, the stiffness will be 24000 MPa.<\/p>\n\n\n\n

4. Load profile<\/strong>
Here you choose how the load should be distributed on the profile. The following options:<\/p>\n\n\n\n

    \n
  • Load Case 1 \u2013 load applied in Newton (N), as a concentrated load in the middle of the profile clamped at both ends.<\/li>\n\n\n\n
  • Load Case 2 \u2013 load applied evenly distributed over the entire profile in Newtons per meter (N\/m) on profile tensioned at both ends.<\/li>\n\n\n\n
  • Load Case 3 \u2013 load applied in Newton (N), as concentrated load at the end of the profile tensioned at the opposite end.<\/li>\n\n\n\n
  • Load Case 4 \u2013 load applied evenly distributed over the entire profile in Newtons per meter (N\/m) on a profile tensioned at one end.<\/li>\n<\/ul>\n\n\n\n

    5.Density(g\/cm3)
    <\/strong>Density (g\/cm\u00b3) is the density of the material, weight per volume. This value is pre-filled with 1.8 g\/cm\u00b3 (1800 kg\/m\u00b3) which applies to profiles produced by pulling the profile through a forming tool (pultrusion).<\/p>\n\n\n\n

    6. Length (m)<\/strong>
    Here you enter the profile length that is exposed to load. For load cases 1 and 2, the length between attachment points \/ support is used. For load cases 3 and 4, the protruding length is used.<\/p>\n\n\n\n

    7. Distributed load (N\/m) \/ Point Load (N)
    <\/strong>The load to which the profile is exposed is stated here. For evenly distributed load, the load is stated in N\/m (example 3,000 N\/m = 3KN\/m = approx. 300 kg\/m). For concentrated load, the load is stated in N (example 3,000 N = 3KN = approx. 300 kg)<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \"\"<\/figure>\n\n\n\n
    \n\n\n\n

    Results<\/strong>
    The different results will change in real time based on the conditions you have defined above. The results give you a clear overview of how the profile behaves under load, so you can assess whether it meets the requirements of your project.<\/p>\n\n\n\n

    Below you will find an explanation of all the results you are presented with.<\/p>\n\n\n\n

    \"\"<\/figure>\n\n\n\n

    Max. Deflection (mm)
    <\/strong>Calculated deflection in mm for the profile (maximum value). Deflection should not exceed 1 : 200 of the loaded profile length. Example: With a loaded profile length of 4,000 mm (4 m), deflection should not exceed 20 mm). <\/p>\n\n\n\n

    Max. Bending stress (MPa)
    <\/strong>Bending stress for profile in Megapascal (MPa) as maximum value.<\/p>\n\n\n\n

    W (mm3)
    <\/strong>Section modulus, which describes the profile's resistance to bending.<\/p>\n\n\n\n

    Mass (kg)
    <\/strong>Profile weight stated in kilograms.<\/p>\n\n\n\n

    Max. Bending torque (Nm)
    <\/strong>Bending moment for the profile in Nanometers (maximum value).<\/p>\n\n\n\n

    Elongation (%)
    <\/strong>Profile elongation under load in percent.<\/p>\n\n\n\n

    In (<\/strong>mm\u2074)
    <\/strong>The moment of inertia, which describes the stiffness of the profile in bending.<\/p>\n\n\n\n

    Area (mm2)
    <\/strong>The cross-sectional area of the profile, the area of the actual cut surface when the profile is cut crosswise.<\/p>\n\n\n\n

    Example<\/strong><\/h4>\n\n\n\n

    Can a 150 mm H-beam, braced at both ends, with a 4 m open span take a load of 300 kg\/m (total load of 4 m = 1.2 tons)?<\/p>\n\n\n\n

    From the calculator, select H-profile \u2013 Under Dimensions, select H-beam with H- 152 mm, B- 152 mm, T- 6.4 mm. From the Load Profile, select Loading case 2 \u2013 evenly distributed load.<\/p>\n\n\n\n

    Under Length (m), enter 4 m, and under Distributed Load, enter 3000 N\/m (300 kg (kp) = 2943 N).<\/p>\n\n\n\n

    Calculated deflection: 7 mm<\/p>\n\n\n\n

    The recommended maximum deflection is 1:200 which for a 4 m open span gives a maximum permissible deflection of 20 mm.<\/p>\n\n\n\n

    Conclusion:<\/strong> Calculated deflection is 7 mm. Recommended maximum deflection is 20 mm. The 150 mm H-beam can be used for a load of 300 kg\/m.<\/p>","protected":false},"featured_media":1991,"template":"","meta":{"_acf_changed":false},"categories":[],"class_list":["post-1442","fagartikler","type-fagartikler","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nHvordan bruke v\u00e5r lastkalkulator - Glassfiber Produkter<\/title>\n<meta name=\"description\" content=\"Les hvordan bruke v\u00e5r lastkalkulator\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/glassfiber.no\/en\/professional-articles\/load-calculator\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hvordan bruke v\u00e5r lastkalkulator - Glassfiber Produkter\" \/>\n<meta property=\"og:description\" content=\"Les hvordan bruke v\u00e5r lastkalkulator\" \/>\n<meta property=\"og:url\" content=\"https:\/\/glassfiber.no\/en\/professional-articles\/load-calculator\/\" \/>\n<meta property=\"og:site_name\" content=\"Glassfiber Produkter\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-13T10:27:12+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/glassfiber.no\/wp-content\/uploads\/Glassfiber_Produkter_2020-7917WEB.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1280\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/glassfiber.no\\\/fagartikler\\\/lastkalkulator\\\/\",\"url\":\"https:\\\/\\\/glassfiber.no\\\/fagartikler\\\/lastkalkulator\\\/\",\"name\":\"Hvordan bruke v\u00e5r lastkalkulator - 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