桿旁、控制箱旁、電纜(lan)拐彎處、電纜(lan)管直線長度超過50米時或兩(liang)端電纜(lan)管不在(zai)同一平(ping)面相距100 mm以上時,必(bi)須(xu)設置(zhi)手孔(kong)井(jing)。
立桿(gan)監(jian)控(kong)(kong)(kong)也叫監(jian)控(kong)(kong)(kong)桿(gan),分為(wei)(wei)八(ba)角監(jian)控(kong)(kong)(kong)桿(gan),圓管監(jian)控(kong)(kong)(kong)桿(gan),等(deng)(deng)徑監(jian)控(kong)(kong)(kong)桿(gan),變(bian)徑監(jian)控(kong)(kong)(kong)桿(gan),錐(zhui)形監(jian)控(kong)(kong)(kong)桿(gan),高度一般為(wei)(wei)3-6米,主要為(wei)(wei)交通道路,十字路口,學校(xiao),政府,小區,工廠,邊防,機(ji)場(chang)等(deng)(deng)需(xu)要監(jian)控(kong)(kong)(kong)攝像的(de)地方。監(jian)控(kong)(kong)(kong)立桿(gan)的(de)使用提高了(le)城(cheng)市(shi)安(an)全防范,是居民(min)生活的(de)有效保障。
基(ji)礎5、設(she)計(ji)依(yi)據:設(she)計(ji)風載(zai):23m/s2,疲(pi)勞壽命(ming):30年,按(an)國家最新(xin)標準版本《碳(tan)素(su)結(jie)構鋼》、《電氣裝置安裝工(gong)(gong)程電纜線路施(shi)(shi)工(gong)(gong)及驗收(shou)規(gui)(gui)(gui)范》、《鋼結(jie)構工(gong)(gong)程施(shi)(shi)工(gong)(gong)及驗收(shou)規(gui)(gui)(gui)范》、《鋼筋混凝(ning)土工(gong)(gong)程施(shi)(shi)工(gong)(gong)驗收(shou)規(gui)(gui)(gui)范》等相關規(gui)(gui)(gui)范進行施(shi)(shi)工(gong)(gong)。