第05课时-建筑工程技术-建筑材料（Class 05 - Building Engineering - building materials）.doc

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第05课时-建筑工程技术-建筑材料（Class 05 - Building Engineering - building materials）.doc

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第05课时-建筑工程技术-建筑材料（Class 05 - Building Engineering - building materials）

第05课时-建筑工程技术-建筑材料（Class 05 - Building Engineering - building materials） Class 06 - Building Engineering - building construction technology (1) 1A410000 building engineering technology 1A414000 construction technology 1A414010 construction survey 1A414011 grasp the contents and methods of construction survey I. Basic Work of construction survey 1. measurement of known length 2. measurement of known angles 3. layout of detail location of building 4., building detail points, elevation position and inclination measurement. Two. Contents of construction survey 1. establishment of construction control network before construction 2. building location, foundation laying and detail survey 3. complete the drawing of the drawing 4. deformation observation of buildings during construction and operation. Three 、 construction survey method Layout of detail location of building detail 1. coordinate method 2. polar coordinate method 3. angle forward intersection method 4. range intersection method 5. direction intersection method. Four. Building elevation survey 1. elevation measurement of ground points (1) A elevation is known, and the design elevation HB is tested on the pile B Steps: first, at the A point, the reading a is called the after reading; Then erect the foot on the B pile, in order to make the elevation of the B point equal to the design elevation HB, raise or lower the ruler on the B point, make the reading B exactly equal to b=HA+a-HB, in which the reading B is called forward reading. Mark the bottom end of the foot at the B point on the B pile. (2) known A point Gao Cheng, measuring Gao Cheng B unknown Gao Cheng point Step 1. Position R at A and read the back reading a 2. Stand R at the B station and read forward looking B Then: HB=Ha+a-b 2. elevation transfer Such as A and B, the elevation difference between two points is larger, and the height transfer method is adopted (1) the known elevation is HA, and the unknown elevation is measured HB Step: Place level betwe