預埋(mai)槽道(dao)的(de)(de)(de)(de)測量(liang)實(shi)施步驟的(de)(de)(de)(de)怎(zen)樣使(shi)用準(zhun)(zhun)直(zhi)儀(yi)傳輸(shu)參(can)考點。為了(le)提高(gao)傳輸(shu)的(de)(de)(de)(de)準(zhun)(zhun)確性，將準(zhun)(zhun)直(zhi)儀(yi)設置在已(yi)知的(de)(de)(de)(de)參(can)考點上(shang)，將參(can)考點的(de)(de)(de)(de)中心與向下(xia)的(de)(de)(de)(de)準(zhun)(zhun)直(zhi)軸交叉線的(de)(de)(de)(de)中心對齊，然(ran)后用向上(shang)視(shi)準(zhun)(zhun)軸十字絲中心照準(zhun)(zhun)傳遞(di)層基準(zhun)(zhun)點中心標志(zhi)，弧形(xing)預埋(mai)槽道(dao)價格(ge)，加工精度和加工誤(wu)差，成都弧形(xing)預埋(mai)槽道(dao)，是以兩種觀點對預埋(mai)槽道(dao)質(zhi)量(liang)好(hao)壞進行評定(ding)的(de)(de)(de)(de)。在實(shi)際工作中，我們通(tong)常從減(jian)小預埋(mai)件的(de)(de)(de)(de)加工誤(wu)差和測量(liang)誤(wu)差的(de)(de)(de)(de)角度出(chu)發，達到(dao)臨時固定(ding)的(de)(de)(de)(de)目的(de)(de)(de)(de)。

每(mei)段邊(bian)墻(qiang)鋼(gang)(gang)筋(jin)綁扎完(wan)畢后(hou)，根據預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)件(jian)(jian)(jian)(jian)的(de)點位布(bu)置、標(biao)高(gao)尺寸及邊(bian)墻(qiang)鋼(gang)(gang)筋(jin)的(de)尺寸控制線，在鋼(gang)(gang)筋(jin)網上(shang)預(yu)(yu)(yu)(yu)(yu)(yu)綁扎預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)件(jian)(jian)(jian)(jian)。預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)槽道(dao)預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)前(qian)，弧形預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)槽道(dao)尺寸，側墻(qiang)模(mo)(mo)板(ban)(ban)(ban)支(zhi)設時(shi)，用長釘(ding)通過預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)件(jian)(jian)(jian)(jian)表面預(yu)(yu)(yu)(yu)(yu)(yu)留的(de)孔洞固定(ding)在模(mo)(mo)板(ban)(ban)(ban)上(shang)，預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)件(jian)(jian)(jian)(jian)的(de)每(mei)一個空(kong)隙用長釘(ding)和模(mo)(mo)板(ban)(ban)(ban)固定(ding)。預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)槽道(dao)道(dao)檢(jian)查(cha)后(hou)，應(ying)進行(xing)自(zi)檢(jian)，并(bing)做好隱(yin)蔽記錄。自(zi)己檢(jian)查(cha)合格以后(hou)，然后(hou)進行(xing)埋(mai)(mai)件(jian)(jian)(jian)(jian)檢(jian)驗(yan)。混(hun)凝(ning)土施工時(shi)，振搗棒應(ying)在預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)件(jian)(jian)(jian)(jian)側面延長振搗時(shi)間，預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)件(jian)(jian)(jian)(jian)周圍混(hun)凝(ning)土必須(xu)澆筑(zhu)密(mi)實，以免漏漿、空(kong)鼓，影響(xiang)預(yu)(yu)(yu)(yu)(yu)(yu)埋(mai)(mai)件(jian)(jian)(jian)(jian)質量。

預(yu)(yu)埋(mai)(mai)(mai)槽道道定位固(gu)(gu)定（關(guan)鍵工序、質量控(kong)制點(dian)）預(yu)(yu)埋(mai)(mai)(mai)前(qian)(qian)，應先(xian)去進行(xing)技(ji)術(shu)交(jiao)底，特別是轉角(jiao)、定位埋(mai)(mai)(mai)件(jian)的埋(mai)(mai)(mai)設方(fang)法(fa)。根(gen)據墻體標高提前(qian)(qian)布(bu)置鋼筋，根(gen)據墻體標高布(bu)置預(yu)(yu)埋(mai)(mai)(mai)件(jian)。埋(mai)(mai)(mai)件(jian)預(yu)(yu)埋(mai)(mai)(mai)前(qian)(qian)，側(ce)墻模(mo)板(ban)(ban)支設時，用(yong)長釘(ding)(ding)通過表面預(yu)(yu)留的孔洞(dong)固(gu)(gu)定在(zai)模(mo)板(ban)(ban)上，每一(yi)個空隙用(yong)長釘(ding)(ding)和模(mo)板(ban)(ban)固(gu)(gu)定。預(yu)(yu)埋(mai)(mai)(mai)槽道道預(yu)(yu)埋(mai)(mai)(mai)前(qian)(qian)，應先(xian)去進行(xing)技(ji)術(shu)交(jiao)底，重(zhong)要(yao)是轉角(jiao)方(fang)向埋(mai)(mai)(mai)件(jian)的預(yu)(yu)埋(mai)(mai)(mai)側(ce)。