🏠 金属屋面造价计算器（含坡度、人工、拆旧、损耗）Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste)
输入房屋占地长宽（或直接输入屋面面积）和屋面坡度，按坡度系数换算实际屋面面积和“方”数（100 平方英尺），再按材料单价、人工单价、拆除旧屋面费用和损耗估算总造价。支持公制和英制。本地处理。Enter the building footprint (or the roof area directly) and the pitch to get the true roof area from the pitch factor and the number of squares (100 ft²), then estimate the total from material price, labour rate, old-roof tear-off and waste. Works in metric or imperial. Processed locally.
使用说明与常见问题How-to & FAQ
「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」是什么？What is the Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste) tool?
输入房屋占地长宽（或直接输入屋面面积）和屋面坡度，按坡度系数换算实际屋面面积和“方”数（100 平方英尺），再按材料单价、人工单价、拆除旧屋面费用和损耗估算总造价。支持公制和英制。本地处理。Enter the building footprint (or the roof area directly) and the pitch to get the true roof area from the pitch factor and the number of squares (100 ft²), then estimate the total from material price, labour rate, old-roof tear-off and waste. Works in metric or imperial. Processed locally.
如何使用「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」？How do I use the Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste) tool?
在「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」中，填写「单位」、「面积输入」、「占地长（含挑檐）」、「占地宽（含挑檐）」、「坡度（每 12 的升高）」等参数，结果会随输入实时计算并显示在下方。In the Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste): Fill in "Units", "Area input", "Footprint length (with overhang)", "Footprint width (with overhang)", "Pitch (rise per 12)"; results are recalculated instantly as you type.
坡度和损耗有什么限制？What limits apply to pitch and waste?
坡度按“每 12 单位水平长度升高多少”填写，范围 0–24；损耗 0–40 %，留空为 0。人工和拆除单价留空按 0 计算。Pitch is the rise per 12 units of run, from 0 to 24; waste is 0–40 % and blank means 0. Blank labour and tear-off prices count as 0.
坡度系数是什么？What is the pitch factor?
斜屋面比占地面积大。坡度为每 12 单位水平升高 r 单位时，系数 = √(1 + (r/12)²)，例如 6/12 坡度约 1.118。屋面面积 = 占地面积（含挑檐）× 系数。A sloped roof is larger than its footprint. For a rise of r per 12 the factor is √(1 + (r/12)²), about 1.118 for a 6/12 pitch. Roof area = footprint (with overhangs) × factor.
“方”是什么？What is a square?
北美屋面行业常用“方”(square) 计价，1 方 = 100 平方英尺 ≈ 9.29 m²。North American roofers price by the square: 1 square = 100 ft², about 9.29 m².
损耗取多少？How much waste should I allow?
简单的双坡屋面约 5–10 %；屋脊多、天窗多或形状复杂的屋面可能需要 15 % 以上。About 5–10 % for a simple gable roof; hips, valleys, skylights and complex shapes can need 15 % or more.
能举个计算实例吗？Can you show a worked example?
例如在「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」中填 单位 = 米、平方米，面积输入 = 直接输入屋面面积，屋面面积 = 100，材料单价（每 m² 或 ft²） = 50，人工单价（每 m² 或 ft²） = 0，损耗 % = 0，结果区显示：屋面面积：100 m²；方数（100 ft²）：10.76；材料（含 0 % 损耗）：5,000.00；人工：0.00；估算总价：5,000.00；折合每平方米：50.00；ℹ 未含屋脊、泛水、天沟等配件和运输费，正式报价以承包商现场测量为准。For example, entering Units = m, m², Area input = Roof area directly, Roof area = 100, Material price (per m² or ft²) = 50, Labour (per m² or ft²) = 0, Waste % = 0 in the Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste) gives: Roof area: 100 m²; Squares (100 ft²): 10.76; Materials (with 0 % waste): 5,000.00; Labour: 0.00; Estimated total: 5,000.00; Per m²: 50.00; ℹ Ridge caps, flashing, gutters and delivery are not included; get a contractor quote based on a site measurement.
哪些输入会被检查？Which inputs are validated?
「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」会检查这些输入——「占地长（含挑檐）」、「占地宽（含挑檐）」、「屋面面积」：所选方式用到时必须填写，须大于 0；「坡度（每 12 的升高）」：所选方式用到时必须填写，须在 0–24 之间；「材料单价（每 m² 或 ft²）」：必须填写，须大于 0；「人工单价（每 m² 或 ft²）」、「拆旧单价（可选）」：不能为负数；「损耗 %」：须在 0–40 % 之间（留空按 0）；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste) checks its inputs — "Footprint length (with overhang)", "Footprint width (with overhang)", "Roof area": required when the chosen option uses it, must be greater than 0; "Pitch (rise per 12)": required when the chosen option uses it, must be 0–24; "Material price (per m² or ft²)": required, must be greater than 0; "Labour (per m² or ft²)", "Tear-off price (optional)": cannot be negative; "Waste %": must be 0–40 % (blank counts as 0); numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」的设置：「单位」可选 米、平方米、英尺、平方英尺（默认 米、平方米）；「面积输入」可选 占地长 × 宽（按坡度换算）、直接输入屋面面积（默认 占地长 × 宽（按坡度换算））；「占地长（含挑檐）」默认 12；「占地宽（含挑檐）」默认 10；「坡度（每 12 的升高）」默认 6；「屋面面积」默认 120；「材料单价（每 m² 或 ft²）」默认 45；「人工单价（每 m² 或 ft²）」默认 30；「拆旧单价（可选）」默认 0；「损耗 %」默认 8。每次生成结果都按当前设置处理。Settings in the Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste) — "Units": m, m², ft, ft² (default m, m²); "Area input": Footprint length × width (pitch applied), Roof area directly (default Footprint length × width (pitch applied)); "Footprint length (with overhang)" default 12; "Footprint width (with overhang)" default 10; "Pitch (rise per 12)" default 6; "Roof area" default 120; "Material price (per m² or ft²)" default 45; "Labour (per m² or ft²)" default 30; "Tear-off price (optional)" default 0…
计算结果可以作为最终依据吗？Can I rely on the result?
「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」按标准公式计算，结果仅供参考；实际金额以银行、券商或税务机关的规则和四舍五入方式为准。The Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste) uses standard formulas and is for estimation only; actual figures depend on your bank, broker or tax authority's rules and rounding.
「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」免费吗？需要注册吗？Is the Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste) free? Do I need an account?
「金属屋面造价计算器（含坡度、人工、拆旧、损耗）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Metal Roof Cost Calculator (Pitch, Labour, Tear-off, Waste) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.