Unverified82% confidenceDecision RuleTime unknown
天幕主受力角点（尤其迎风侧和风绳点）应使用长度≥30cm的钢钉，次要点位可用20-25cm铝钉，混搭配置比全套统一更经济且更安全
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Unverified地钉越长越重抓地越牢，但携带负担越大：徒步轻量化选16-18cm铝合金/钛钉；自驾露营可上20-25cm钢钉换取稳定性85% similarUnverified常见地钉长度：铝合金Y型钉18-25cm、钢制圆钉20-30cm，选购钉包内部长度需≥最长地钉+2cm，否则拉链合不上85% similarUnverified6×6m大天幕需铝合金撑杆（直径≥28mm或32mm加粗管），玻纤杆或细铝管在大风下易变形折断；小于4×4m的天幕可接受细杆84% similarUnverified带独立卷尺挂扣和铁锤环的腰包，铁锤环开口应≥30mm才能容纳常规羊角锤手柄，圆头锤则需更大环径83% similarUnverified选购天幕需配套评估支撑杆规格：主杆直径≥28mm、壁厚≥1mm铝合金杆抗风更稳，2.4米以上高杆需加粗；很多天幕不含杆，购买前确认是否需另配2-4根撑杆及地钉风绳82% similar
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