【正文】 This operation will be carried out on site, and will be inspected full time by our representative. 這一操作應(yīng)現(xiàn)場進(jìn)行，由我方代表全程監(jiān)督。 Fujian LNG phrase 1 Additional 3 amp。 . Inserts for pipe rack and escape ladder 管道 及逃生梯 預(yù)埋件 The inserts for pipe rack and escape ladder shall be installed and fixed on the rebar firmly by steel clamps. The method for fixing is similar as the horizontal 及逃生梯 預(yù)埋件應(yīng)用鋼夾具安裝并固定于鋼筋網(wǎng)上，固定方法與水平預(yù)埋件相似。用鋼夾具將預(yù)埋件拉至緊貼模板面。 The sequence of installation of horizontal inserts shall be as follows: 水平預(yù)埋件安裝順序如下： a) The vertical insert shall be installed and fixed on the rebar firmly by steel clamps. 豎直預(yù)埋件應(yīng)安裝于鋼筋網(wǎng)上，用鋼夾具固定； b) The ponent of horizontal insert shall be hanged to sit on the top Fujian LNG phrase 1 Additional 3 amp。 The third horizontal insert is located in the top of lift 10. Due to the weight of this ponent, the vertical inserts will support 平預(yù)埋件的位置在第 10 層頂部。在焊接后，用夾鉗和螺桿穿過模板將其拉到緊貼模板面詳見附件 2。 Should it be found necessary to push the horizontal strips to the formwork face, this will be done by concrete spacer between the insert strip and the rebar or by use of threaded rod and ，則須在預(yù)埋件板條和鋼筋間放置混凝 土 隔離塊，或者使用螺桿和鋼板。 4 Tanks Project _____________________________________________________________________________________________________________________________ Method Statement for the Concrete Wall of LNG Tank ______________________________________________ REVISION :0 PAGE: 19/48 面的錨固釘與附近鋼筋捆綁來固定預(yù)埋件。 . Horizontal inserts 水平預(yù)埋件 The first horizontal insert is located at a level of +515mm above the pile cap, its segmental ponents will be held in place by tying the stud welded on the rear face to the rebar by civil subcontractor. The segments shall be welded together by the mechanical subcontractor prior to concreting. 第一層水平預(yù)埋件埋于底板之上 +515mm 標(biāo)高處。 If it is found that there is a gap between the insert and formwork, the insert will be pushed into contact by way of a rebar which one end is covered with C50 concrete block. Refer to Detail 2 of Appendix 與模板之間留有空隙，須用一端套有 C50 混凝土塊的鋼筋將預(yù)埋件壓緊，使兩者接觸。見附件 1 中詳圖 1。 4 Tanks Project _____________________________________________________________________________________________________________________________ Method Statement for the Concrete Wall of LNG Tank ______________________________________________ REVISION :0 PAGE: 18/48 within the design requirement. The joint of inserts shall be welded by the mechanical subcontractor, and then inserts shall be checked and qualified before lifting and installing the inner formwork. Use steel clamps and tie rods to pull the insert closely contact the surface of formwork. Refer to Detail 1 of Appendix tie rod will pass through predrilled holes in the formwork and held the insert in position using a washer and wing nut. The wing nut will be hand tightened until the insert position is fixed by use of total station and then fully tightened. 垂直預(yù)埋件用塔吊吊至安裝位置后可用鐵絲進(jìn)行臨時(shí)固定，使埋件位置和垂直度偏差滿足設(shè)計(jì)要求。 . Vertical inserts 豎直預(yù)埋件 Vapour barrier inserts will be fixed with fitments that were previously installed through formwork to ensure that the insert is held in position firmly during concreting operations. 隔汽預(yù)埋件通過一個(gè)穿透模板的固定件進(jìn)行固定以保證在混凝土作業(yè)過程中不會(huì)移位 。 . Installation of embedded parts 預(yù)埋件安裝 . General 總則 Contractor shall provide all inserts used in the tank. The mechanical subcontractor shall weld the connection joints and adjust the deformation caused by welding. The civil subcontractor shall install and fix the inserts in accordance with the requirement of drawings and specification.承包商負(fù)責(zé)供應(yīng)罐體所用全部預(yù)埋件，機(jī)械分包商負(fù)責(zé)焊接連接和焊接變 形校正，土建分包商負(fù)責(zé)根據(jù)圖紙和規(guī)范要求將預(yù)埋件安裝和固定。 After shuttering removal, full survey of the wall lift shall be performed in order to check all tolerances specified in the project specification. A formal written report shall be then submitted to the QC manager, construction manager, technical manager and the survey engineer for review Fujian LNG phrase 1 Additional 3 amp。 During pouring, surveyor shall continuously monitor the shuttering so that adjustment of formwork panels may be done during concrete pouring if required。測量點(diǎn)必須置于內(nèi)模板上下，內(nèi)模板則需根據(jù)測量員的指示進(jìn)行調(diào)整和固定。根據(jù)墻體施工需要每兩層將定向方位線向上引測一次。 4 Tanks Project _____________________________________________________________________________________________________________________________ Method Statement for the Concrete Wall of LNG Tank ______________________________________________ REVISION :0 PAGE: 16/48 survey every 1/3 height concrete poured and do some adjustment if necessary to control tank verticality, radian and diameter. As per wall construction requirement, survey and lead directional line up every two lifts. 在墻體施工階段，使用測量專用塔架 （塔架制作參照 附件 14） 、激光垂準(zhǔn)儀（向上一測回標(biāo)準(zhǔn)偏差 1/45000，向下對徑觀測極限誤差 1/2021），將底板上的圓心點(diǎn)引測到架設(shè)全站儀所需的高度，再用全站儀通過無棱鏡測量（使用無棱鏡可以減少扶棱鏡的人為誤差）每一塊模板的半徑和垂直度。 In wall construction period, use survey tower (detailed plan refer to appendix 14) and laser plumb aligner (do a circumferential survey upwards, standard tolerance is 1/45000。 4 Tanks Project _____________________________________________________________________________________________________________________________ Method Statement for the Concrete Wall of LNG Tank ______________________________________________ REVISION :0 PAGE: 15/48 . Survey control 測量控制 After the concrete at central area of pile cap reached enough strength, the survey team shall set the center point accurately by using the survey control points approved by Contractor. And this center point shall be used for survey control of tank diameter and verticality during construction of the wall. The detailed control methods are as follows:在中心區(qū)底板混凝土達(dá)到一定強(qiáng)度后，由測量人員通過總承包商批準(zhǔn)的測量控制 點(diǎn)精確測定罐底板中心點(diǎn)，在罐筒體施工過程中利用該點(diǎn)對罐體直徑和墻體垂直度進(jìn)行測量控制。 4 Tanks Project ____________________________________________