Array
(
[0] => Array
(
[id] => 2
[name] => 首页
[category_id] => 221
[url] =>
[active] => 1
[position] => 1
[blank] =>
[is_out] =>
)
[1] => Array
(
[id] => 4
[name] => 氿上商城
[category_id] => 221
[url] => goods
[active] => 1
[position] => 2
[blank] =>
[is_out] =>
)
[2] => Array
(
[id] => 1
[name] => 学习园地
[category_id] => 221
[url] => news
[active] => 1
[position] => 5
[blank] =>
[is_out] =>
)
[3] => Array
(
[id] => 16
[name] => 氿上知道
[category_id] => 221
[url] => question
[active] => 1
[position] => 4
[blank] =>
[is_out] =>
)
[4] => Array
(
[id] => 5
[name] => 供求信息
[category_id] => 221
[url] => trade
[active] => 1
[position] => 3
[blank] =>
[is_out] =>
)
[5] => Array
(
[id] => 3
[name] => 软件下载
[category_id] => 221
[url] => jsyjj/list/409
[active] => 1
[position] => 6
[blank] =>
[is_out] =>
)
[6] => Array
(
[id] => 46
[name] => 氿上云管理
[category_id] => 221
[url] => yun/index
[active] => 1
[position] => 7
[blank] =>
[is_out] =>
)
[7] => Array
(
[id] => 22
[name] => 氿上花园
[category_id] => 221
[url] => garden
[active] => 1
[position] => 999
[blank] =>
[is_out] =>
)
)
混凝土垫层厚度减少，设计100mm,对设计有什么影响吗？ - 工程施工 - 项目管理 - 氿上知道
返回顶部
满意答案
钢筋混凝土基础受力钢筋的保护层：当有垫层时为40mm；无垫层时为70mm。
关于垫层的厚度在《建筑地基基础设计规范》GB50007—2002中第8.2节中规定：
扩展基础的垫层的厚度不宜小于70mm，垫层混凝土强度等级应为C10。
扩展基础系指柱下钢筋混凝土独立基础和墙下钢筋混凝土条形基础。
在无筋扩展基础中不必使用垫层。无筋扩展基础系指由砖、毛石、混凝土或毛石混凝土、灰土和三合土等材料组成的墙下条形基础或柱下独立基础。
特别的书
回答于：2013-09-13
共2条回答