Fillet Weld Throat
Calculate the effective throat of a fillet weld, a = 0.707 × z, from the leg z of the fillet. For an equal-leg fillet, the throat — the smallest dimension of the resisting section, from root to face — equals the leg times sin(45°) ≈ 0.707. The result, in the same unit as the leg (mm), is the dimension used to calculate the strength of the welded joint, since the weld tends to fail across this minimum section. Sizing the throat correctly ensures the weld carries the design load. Enter the fillet leg.
Resultado
—
Garganta de filete de solda
Um filete de solda (solda em ângulo, que une duas peças em T ou em sobreposição) tem seção transversal aproximadamente triangular. Suas dimensões nominais são as pernas (catetos) z, mas a peça não rompe ao longo de uma perna — ela rompe pela menor seção resistente, chamada garganta efetiva (a), medida da raiz da solda até a face, perpendicular à hipotenusa. Para um filete de pernas iguais, a geometria do triângulo retângulo dá a = z × sen(45°) = 0,707 × z. É essa garganta, e não a perna, que entra no cálculo de resistência: a tensão na solda é a carga dividida pela área da garganta (a × comprimento do cordão). Subestimar isso — calcular como se a seção fosse a perna inteira — superdimensionaria a resistência e seria inseguro. Na prática, especifica-se a perna z no desenho (é o que o soldador consegue medir e controlar), e o projetista converte para a garganta para verificar se a junta suporta o esforço de projeto, aplicando ainda os coeficientes de segurança da norma. Para filetes de pernas desiguais, usa-se a menor garganta possível inscrita no triângulo. Informe a perna do filete.
Related Tools
Junction Temperature
Calculate the junction temperature of a power semiconductor, T_j = T_a + P × R_th, from the ambient temperature T_a, the dissipated power P and the total junction-to-ambient thermal resistance R_th (°C/W). The result, in °C, is the device's internal temperature (silicon junction), which must not exceed the manufacturer's limit (typically 150 °C) on pain of failure. The thermal resistance adds the junction-to-case, case-to-heatsink and heatsink-to-ambient stages. Lowering R_th (larger heatsink, ventilation, thermal paste) lowers the junction temperature. It is the central calculation of power electronics thermal design. Enter the ambient temperature, the dissipated power and the thermal resistance.
Geosynthetic Seam Strength
Calculate the strength of a geosynthetic seam (sewn or welded), T_seam = (E ÷ 100)·T_ult, from the seam efficiency E (% of base material strength) and the geosynthetic ultimate strength T_ult (kN/m). Geosynthetics come in limited-width rolls, and on large works (reinforced walls, embankments, geomembrane-lined ponds) must be SEAMED to cover the whole area — by sewing, thermal welding (geomembranes) or simple overlap. The seam is almost always the WEAKEST POINT of the system: a sewn seam has efficiency typically 50-80% of the base fabric strength (the needle punctures and weakens the material, and the thread can be the weak link), while well-made thermal welds in geomembranes can reach 80-100%. So in REINFORCEMENT geosynthetics, seams perpendicular to the main tension are avoided or reinforced, and in barrier geomembranes (landfills, ponds) welds are rigorously tested (dual-channel air pressure, vacuum, destructive tests), since a leak from a bad seam compromises the whole lining. Knowing the seam strength is essential for design and quality control. Enter the seam efficiency and the ultimate strength.
Required Fire Flow
Calculate the water flow required for a firefighting system, Q = area × application rate, multiplying the operating area (m²) by the required application density (L/min per m²). The result, in L/min, is the minimum flow the sprinkler or spray system must deliver over the most unfavourable area to control the fire. The application rate depends on the occupancy's hazard class — the higher the fire load and combustibility, the higher the density required by codes (NBR/NFPA). It is the basis of hydraulic design and water reserve. Enter the area and the application rate.
The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.