桿(gan)旁(pang)、控制箱(xiang)旁(pang)、電纜拐彎(wan)處、電纜管(guan)直線長度超過50米時(shi)或(huo)兩端電纜管(guan)不在同(tong)一平面相(xiang)距100 mm以上時(shi),必須設置手孔井。
立桿(gan)監(jian)控(kong)(kong)也叫監(jian)控(kong)(kong)桿(gan),分為八角監(jian)控(kong)(kong)桿(gan),圓管監(jian)控(kong)(kong)桿(gan),等徑監(jian)控(kong)(kong)桿(gan),變徑監(jian)控(kong)(kong)桿(gan),錐形(xing)監(jian)控(kong)(kong)桿(gan),高度一般為3-6米,主要為交(jiao)通道路(lu),十(shi)字路(lu)口,學(xue)校,政府,小區,工(gong)廠,邊(bian)防(fang),機場等需(xu)要監(jian)控(kong)(kong)攝(she)像的地方。監(jian)控(kong)(kong)立桿(gan)的使用提高了(le)城市(shi)安全防(fang)范(fan),是居民生活的有效保(bao)障。
基礎5、設計依據:設計風載:23m/s2,疲(pi)勞壽命:30年(nian),按國(guo)家最(zui)新(xin)標(biao)準版(ban)本(ben)《碳(tan)素(su)結構鋼》、《電(dian)氣裝置安裝工(gong)(gong)程電(dian)纜線路施工(gong)(gong)及驗(yan)收規(gui)(gui)范》、《鋼結構工(gong)(gong)程施工(gong)(gong)及驗(yan)收規(gui)(gui)范》、《鋼筋混凝土(tu)工(gong)(gong)程施工(gong)(gong)驗(yan)收規(gui)(gui)范》等相關(guan)規(gui)(gui)范進行施工(gong)(gong)。