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Describe the geometry (including any cantilevers), material, and internal forces at each section. Mia runs the full EN 1995-1-1 verification suite: shear, combined tension/compression and bending, ridge bending and tension perpendicular to grain, lateral-torsional buckling, and support pressure, with the governing utilisation named.
GL24c pitched cambered beam, hap 1.00 m, R 20 m, with cantilevers
Verify the apex zone of a pitched cambered glulam beam GL24c, b = 250 mm, hap = 1.00 m, R = 20 m (to the inside face), delta = 15 degrees, t = 40 mm, service class 2, gamma_M = 1.3, apex zone volume V = 2.68 m3, Map,d = 143.7 kNm.
Calculate the example with Mia
Checks the ridge-zone bending stress (k_l) and the combined tension-perpendicular-to-grain/shear interaction (k_dis, k_vol). The apex angle alpha_ap is taken as the true local edge slope at the apex (0 for a smoothly curved ridge, not the support-end taper angle), matching verified RX-TIMBER output.
Shear (with the crack-reduction factor), combined tension/compression and bending at any section including cantilevers, and bending on straight tapered edges (tension and compression side).
Computes the relative slenderness and k_crit from the critical bending stress, given the section's lateral and torsional stiffness and effective buckling length.
Checks compression at an angle to the grain at raked supports, with the effective contact length and k_c,90.
Instantaneous, net-final (creep-adjusted), and combined characteristic/quasi-permanent deflection at midspan and at any cantilever tip, against the National Annex limits.
Full geometry (including any cantilevers), the glulam strength class and elastic properties, service/load-duration classes, and the internal forces (N,d, V,d, M,d) at each section you want checked. For the ridge check alone, roof loads plus a tributary width can stand in for a directly given Map,d.
No. This skill checks stresses and capacities at sections you specify. For a curved or cantilevered beam under wind, deriving the internal forces at every section generally needs a real 2D/frame analysis (e.g. an RFEM model, skill 000005-rfem-model-design). Only the simple symmetric-UDL ridge moment can be derived by hand statics here.
For a beam whose top and bottom edges are both curved (a smoothly rounded ridge, not a sharp angular apex), the edge slope AT the apex itself is 0 regardless of the overall roof pitch measured at the supports. Using the support-end slope there would overstate the apex bending check. Tell Mia explicitly if your beam instead has a straight tapered top maintained to a sharp ridge line.
Yes. Describe the cantilever length, end slope, and bottom-edge slope on either side; the same section checks apply at cantilever locations, including the cantilever-specific deflection limits.
Start with the example and adapt it to your structural system.
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