Anchor Rode Length (Scope)
Compute the length of anchor rode (chain or line) to pay out, L = scope·(depth + bow roller height), from the scope ratio (typically 5:1 to 7:1), the water depth and the height of the attachment point above the water. A proper ratio makes the rode pull the anchor horizontally, ensuring it sets and the anchored boat stays safe. Enter the depth, the bow roller height and the scope ratio.
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Comprimento de amarra (fundeio)
Fundear bem é arte e geometria. A âncora só crava no fundo se for tracionada quase na horizontal — se a amarra puxa para cima, ela 'desarma' e o barco garra. Por isso fila-se um comprimento bem maior que a profundidade: L = razão·(profundidade + altura da boca de escovém), onde a razão (scope) é tipicamente 5:1 em condições normais e 7:1 ou mais em mau tempo. Soma-se à profundidade a altura do ponto de fixação na proa, pois é de lá que a amarra desce. O peso da amarra forma uma catenária que absorve os repuxos e mantém o ângulo baixo. Informe a profundidade, a altura da boca de escovém e a razão de fundeio.
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Percent Elongation
Calculate the percent elongation, A% = (L_f − L₀) ÷ L₀ × 100%, from the initial gauge length L₀ and the final length L_f measured after rupture in a tensile test (fitting the two halves of the specimen back together). The result, in %, is a direct measure of the material's ductility — how much it stretches before breaking. Ductile steels reach 20–40%; brittle materials, a few percent. Elongation depends on the gauge length used, so it is always quoted with it (e.g. A% over 50 mm). Enter the initial and final lengths.
Geogrid Anchorage Length
Calculate the anchorage length (embedment in the resistant zone) needed for a reinforcing geogrid, L_a = T ÷ (2·σ_v·tan φ·C_i), from the layer tensile force T (kN/m), the vertical stress σ_v (kPa) on the geogrid, the soil friction angle φ (degrees) and the soil-geogrid interaction coefficient C_i (~0.6-1.0). In a reinforced-soil wall or slope, each geosynthetic layer must be anchored beyond the potential failure surface, over a length enough for soil-reinforcement friction to mobilize the tensile force without the reinforcement being PULLED OUT. The factor 2 appears because the geogrid has friction on BOTH faces (top and bottom). The pullout resistance per unit length is friction (σ_v·tan φ) times the interaction coefficient C_i, which measures how well the geogrid 'interlocks' with the soil (geogrids, with their apertures, have high C_i since soil passes through the mesh and generates passive resistance, better than smooth geotextiles). The anchorage length adds to the length within the active zone (varying with height) to give each layer's TOTAL length. Insufficient anchorage leads to pullout and progressive wall collapse. Enter the tension, vertical stress, friction angle and interaction coefficient.
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.