面板之间留多大缝？

窑干木材约留 3 毫米。含水防腐木要留得更窄，因为干燥后收缩近 6%，缝隙会自己变宽。

龙骨间距是多少？

大多数面板用 40 厘米中心距；面板斜铺或使用塑木时改为 30 厘米，具体以厂家表格为准。

基础要挖多深？

必须低于当地冻土线。高于冻深的基础会被冻胀顶起，并把与房屋连接的横梁一起拉脱。

露台如何与房屋连接？

用穿透螺栓或认可的结构螺丝，并在上方做泛水。横梁连接是露台垮塌最常见的原因，仅用钉子绝不可接受。

建一个露台要多少钱？

防腐木含安装约每平方英尺 15–25 美元，雪松 20–35，塑木 30–60。材料通常只占总价的三分之一。

露台计算器

计算任意矩形露台所需的面板、龙骨和立柱。面板宽度、缝隙和龙骨间距均可调整。

公式与数据最后核对于 2026年8月6日 — Cosyslabs

输入

长度(ft)

宽度(ft)

面板宽度

面板长度

面板间缝隙(in)

龙骨间距

每块面板单价（选填）($)

Result

Deck boards

Joists

Posts

Area: 192 ft²
Board: 5.5" × 12'

Waste default: 5% — IRC 建议预留 5% 用于端部切割和纹理配对。

Diagram

Estimates only. Verify with a licensed contractor or supplier before purchasing. Rough Estimator! is not responsible for shortages, overages, or material variances. See our methodology for formulas and sources.

公式

面板数 = 向上取整(宽度 ÷ (面板宽 + 缝隙) × 向上取整(长度 ÷ 面板长))

参考资料

Measure what the tool asks for
This calculator works from 长度 in ft, 宽度 in ft and 面板间缝隙 in in. Measure the finished area you are covering, not the material — an estimate is only as good as the dimensions you feed it.
What it does with those numbers
面板数 = 向上取整(宽度 ÷ (面板宽 + 缝隙) × 向上取整(长度 ÷ 面板长)) Every figure on the page comes out of that one expression, so you can check it by hand.
Why it adds 5% waste
IRC 建议预留 5% 用于端部切割和纹理配对。
Choosing a 面板宽度
The 面板宽度 changes the result, so pick the one that matches what you are actually buying rather than leaving the default.
Where the numbers come from
The constants are taken from American Wood Council DCA 6 — Prescriptive Residential Wood Deck Construction Guide, IRC R507 — Exterior decks and NADRA — Deck safety and construction resources, linked in full below. If a figure here disagrees with your supplier's spec sheet, use the spec sheet — it describes the product you are buying.
What this will not tell you
This is a material takeoff, not a bid. It does not price labour, permits, delivery, equipment hire or site preparation, and it assumes a straightforward layout. Complex cuts, difficult access and awkward shapes all cost more than the geometry suggests.

Related tools & materials

Calculators

Don't forget

龙骨挂件
露台专用螺丝
柱脚锚固件
防水胶带
木油

Also useful

Astrilio Property Calculators

常见问题

用宽度除以面板实测宽度加缝隙，再乘以沿长度方向所需的排数。计算器会根据你的尺寸直接给出。

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Cite this page

Cosyslabs. (2026). 露台计算器. Rough Estimator!. https://roughestimator.com/zh/deck-calculator

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