Unverified88% confidenceDecision RuleTime unknown
层板跨度（两立柱间距）超过80cm时必须增加中间支撑或采用金属加固，纯板材/实木悬空跨度过大是下垂的首要原因，建议单跨控制在75cm以内
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
Sources
Related Entities
Related Claims
Unverified跨度＞90cm的层板中间无立柱时易下垂，木质/密度板跨度建议控制在80cm内，超过应加中间支撑或改用金属层板93% similarUnverified两根立柱间距（跨度）建议控制在60-90cm，木质层板跨度超过80cm在承重下会明显下弯；跨度过大时应在中间增加立柱而非依赖层板刚性88% similarUnverified长搁板（≥80cm）必须增加中间支撑点或选加厚层板，否则中部会随时间下垂（蠕变）；实木层板抗下垂优于刨花板/密度板，跨度超过1m建议至少3个固定点87% similarUnverified长度超过80cm的实木/密度板搁板必须在中间增加至少一个支撑点，否则长期负重会出现明显中部下垂（挠度），60cm以内可两端固定86% similarUnverified单个柜体宽度超过80cm的层板建议中间加竖向支撑或选双柱设计，否则层板跨度过大易变形下弯86% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/384264API
curl https://kongchang.com/api/v1/knowledge/claims/384264MCP
get_claim(id=384264)