Cov ntsiab lus rau Ceeb Toom Thaum Choj Railing Kev Tsim Kho
1. Cov ntaub ntawv raug cai ntawm txhua qhov chaw, tshwj xeeb tshaj yog qhov tseeb qhov chaw ntawm cov kav dej faus rau hauv txoj kev tsheb ciav hlau, yog qhov tseem ceeb thaum lub sij hawm kev tsim kho railing. Tsis muaj kev puas tsuaj rau cov chaw hauv av raug tso cai thaum tsim kho. Yog tias cov kab sib txuas hauv av, cov kav dej, lossis qhov tsis txaus rov qab qhov tob saum cov culverts tau ntsib, txoj hauj lwm ntawm cov ncej yuav tsum tau hloov kho, los yog txoj kev kho tom qab yuav tsum tau hloov.
2. Yog hais tias tus ncej yog tsav mus tob heev, nws yuav tsum tsis txhob muab rub tawm rau kev kho. Tag nrho cov ntawv yuav tsum raug rub tawm, lawv lub hauv paus rov qab - compacted, thiab ces tsav rov qab mus rau hauv, los yog post position yuav tsum tau kho.
3. Choj railings yuav tsum tau nruab nrog flanges. Ua tib zoo saib xyuas qhov chaw ntawm flanges thiab kev tswj ntawm qhov siab ntawm cov ncej.