滴滴出行专车怎么没了怎么叫专车,滴滴出行专车怎么没了宝贝专车怎么预约

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挡土墙泄水孔的做法是什么?有没有做过的
厨房门口的两块混凝土墙能拆吗?
横向2~3m一个,纵向2~3m一个,最下排泄水孔应高出地面0.3m,最下排泄水孔底部应设置隔水层,泄水孔进水侧应设置反滤层。这是道路设计时挡土墙泄水孔要求,应该可以用作围墙下挡土墙泄水孔要求。但是除了土侧压力,自重外挡墙上还有荷载,挡墙形式要选择好。
其他回答(共5条)
横向2~3m一个,纵向2~3m一个,最下排泄水孔应高出地面0.3m,最下排泄水孔底部应设置隔水层,泄水孔进水侧应设置反滤层。这是道路设计时挡土墙泄水孔要求,应该可以用作围墙下挡土墙泄水孔要求。但是除了土侧压力,自重外挡墙上还有荷载,挡墙形式要选择好。
你好,墙身排水主要是为了迅速排除墙后积水。浆砌挡土墙应根据渗水量在墙身的适当高度处布置泄水孔。泄水孔尺寸可视泄水量大小分别采用5cm×10cm、10cm×10cm、15cm×20cm的方孔,或直径5~10cm的圆孔。泄水孔间距一般为2~3M,上下交错设置。最下排泄水孔的底部应高出墙趾前地面0.3m;当为路堑墙时,出水口应高出边沟水位0.3m:若为浸水挡土墙.则应高出常水位以上0.3m,以避免墙外水流倒灌。为防止水分渗入地基,在最下一排泄水孔的底部应设置30cm厚的粘土隔水层。在泄水孔进口处应设置粗粒料反
挡土墙的排水设施通常内地面排水和墙身排水两部分组成。地面排水可设置地面排水沟,引排地面水;夯实回填土顶面和地面松土,防止雨水和地面水下渗,必要时可加设铺砌;对路堑挡土墙墙趾前的边沟应予以铺砌加固,以防止边沟水渗入基础。墙身排水主要是为了迅速排除墙后积水。浆砌挡土墙应根据渗水量在墙身的适当高度处布置泄水孔。泄水孔尺寸可视泄水量大小分别采用5cm×10cm、10cm×10cm、15cm×20cm的方孔,或直径5~10cm的圆孔。泄水孔间距一般为2~3M,上下交错设置。最下排泄水孔的底部应高出墙趾前地面0.3m;当为路堑墙时,出水口应高出边沟水位0.3m:若为浸水挡土墙.则应高出常水位以上0.3m,以避免墙外水流倒灌。为防止水分渗入地基,在最下一排泄水孔的底部应设置30cm厚的粘土隔水层。在泄水孔进口处应设置粗粒料反滤层,以避免堵塞孔道。当墙背填土透水性不良或有冻胀可能时,应在墙后最低一排泄水孔到墙顶0.5m之间设置厚度不小于0.3m的砂、卵石排水层或采用土工布。
7m高的挡土墙采用块石砌筑,混凝土基础比较经济,可参照是驳岸做法砌筑,混凝土基础宽度采用3.5m适当,混凝土高度采用1m,压顶宽度可采用0.5m,300厚。以此类推。基础的面积最少要3。5米左右,这个也不是一概而论的。具体要看是什么挡土墙,石头的还是钢筋砼剪力墙的,都不好说。你可以上网下载一个挡土墙的图集就行了。评论|
挡土墙排水管做法:挡土墙的排水设施通常内地面排水和墙身排水两部分组成。地面排水可设置地面排水沟,引排地面水;夯实回填土顶面和地面松土,防止雨水和地面水下渗,必要时可加设铺砌;对路堑挡土墙墙趾前的边沟应予以铺砌加固,以防止边沟水渗入基础。墙身排水主要是为了迅速排除墙后积水。浆砌挡土墙应根据渗水量在墙身的适当高度处布置泄水孔。泄水孔尺寸可视泄水量大小分别采用5cm×10cm、10cm×10cm、15cm×20cm的方孔,或直径5~10cm的圆孔。泄水孔间距一般为2~3M,上下交错设置。最下排泄水孔的底部应高出墙趾前地面0.3m;当为路堑墙时,出水口应高出边沟水位0.3m:若为浸水挡土墙.则应高出常水位以上0.3m,以避免墙外水流倒灌。为防止水分渗入地基,在最下一排泄水孔的底部应设置30cm厚的粘土隔水层。在泄水孔进口处应设置粗粒料反滤层,以避免堵塞孔道。当墙背填土透水性不良或有冻胀可能时,应在墙后最低一排泄水孔到墙顶0.5m之间设置厚度不小于0.3m的砂、卵石排水层或采用土工布。
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