路況(kuang)監(jian)控桿(gan)桿(gan)旁、控制(zhi)箱旁、電(dian)纜(lan)拐彎處、電(dian)纜(lan)管直(zhi)線(xian)長度超(chao)過(guo)50米時或(huo)兩端電(dian)纜(lan)管不在同一(yi)平(ping)面相距100 mm以上時，必(bi)(bi)須設置手(shou)(shou)孔(kong)井。手(shou)(shou)孔(kong)井的(de)內(nei)圍尺寸要(yao)求(qiu)為500（長）×500（寬）×600（深）MM，用礫石(shi)鋪層(ceng)作為滲水用；手(shou)(shou)孔(kong)井四壁必(bi)(bi)須抹水泥(ni)沙漿。

控制箱由(you)設備(bei)廠家(jia)根(gen)據所(suo)需容量配(pei)備(bei)，外殼(ke)采用優(you)質冷軋鋼板壁厚不(bu)小(xiao)于1.2mm外表噴室外塑粉(fen)并做好防水防盜及散(san)熱(re)。

結構用鋼不(bu)得影(ying)響材料(liao)和機械性能的裂(lie)紋、分層、重皮、夾渣等缺(que)陷麻點(dian)或劃痕的深度不(bu)得大于(yu)鋼材厚度負公(gong)差的1/2，且不(bu)應大于(yu)0.5mm。

設(she)計(ji)依據：設(she)計(ji)風載：23m/s2，疲勞壽命(ming)：30年，按國家標準版本《碳素結構(gou)鋼(gang)》、《電氣裝(zhuang)置(zhi)安裝(zhuang)工(gong)(gong)(gong)程電纜線(xian)路施(shi)工(gong)(gong)(gong)及驗(yan)收(shou)規(gui)范(fan)》、《鋼(gang)結構(gou)工(gong)(gong)(gong)程施(shi)工(gong)(gong)(gong)及驗(yan)收(shou)規(gui)范(fan)》、《鋼(gang)筋混凝土工(gong)(gong)(gong)程施(shi)工(gong)(gong)(gong)驗(yan)收(shou)規(gui)范(fan)》等相關規(gui)范(fan)進行施(shi)工(gong)(gong)(gong)。