【正文】 2 7 Prepared hole for foundation bolt Central line 10 Depth +20 0 Plumbing for central line of hole 10 8 Preembedded mobile anchor slab of foundation bolt Elevation +10 0 Central line position 5 levelness 5 9 Preembedded parts Elevation (plane) 0 +5 Central line position 10 levelness 5 — 15 — — 16 — Table . The Tolerance Deviation for Frame Equipment Foundation (mm) No. Items Tolerance deviation 1 Axis position foundation 15 Column and gird 8 2 Verticality Per layer 5 Overall height H/1000 is no more than 20 3 elevation Per layer 0 10 Overall height 0 20 4 Section size +8 5 5 Levelness (use 2m ruler to check) 8 6 Central line of preembedded facility Preembedded parts 10 Preembedded foundation bolt 2 Preembedded pipe 5 7 Central line for prepared hole 10 Note: H—the overall height of structure The defect of the performance of concrete structure shall be treated together with the designed unit. The repair for the defect of foundation surface shall conform to the regulation on the GB50204 “ Specification for the Construction and Acceptance of Concrete Structure Works”. — 17 — 4. Unbonded prestressed concrete The stranded steel wire and the steel wire used for the unbonded prestressed concrete shall conform to the regulations on the GB5224 “Stranded Steel Wire for Prestressed Concrete” and the GB5223 “Steel Wire for Prestressed Concrete”. The construction and acceptance of unbonded prestressed concrete shall conform to the regulations on the GB50204 “Specification for the Construction and Acceptance of Concrete Structure Works”. The side form panel on the foundation plate of unbonded prestressed concrete shall conform to the following regulations: 1） The fixed bearing form panel shall be wood form or woodandsteel form panel. 2） The snapping the line, marking and drilling for the form panel shall be conducted with the diameter of unbonded strong stranded steel wire (hereinafter referred to as unbonded reinforcement) and its location. 3） The tolerance deviation for the verticality of form panel for fixing preembedded bearing plate shall be no more than 3 mm. The layout of unbonded reinforcement shall conform to the following regulations: 1） The factors as laying order, location of supports and prepared hole for steel reinforcement shall be prehensively considered with the layout of mon steel reinforcement during the layout of unbonded steel reinforcement. 2） No joints and bend in the unbonded reinforcement are required. 3） No less than 500 mm of exposed unbonded reinforcement length out of the form panel at the tension end. If the unbonded reinforcement is short of length, firstly shall ensure the exposed length at the tension end. 4） The maximum gap between the anchor end and the edge of foundation shall be controlled within 200 mm. 5） The vertical length of axis of unbonded reinforcement and the bearing plate shall be no less than 500 mm. 6） As for the hole and port, the unbonded reinforcement shall be constructed according to the figure and shall be added with shapeV tension reinforcement at the bend position. — 18 — Figure Unbonded Reinforcement At Port 7） The gap of 100 mm between the unbonded reinforcement and the edge of structure shall be set. 8） Each pier of unbonded reinforcement shall be closely contacted with the anchor slab, where there is any gap, the anchor slab shall be hammered to closely contact with the pier of steel wire. 9） The gap between the installation of screw reinforcement and the anchor slab or the bearing plate shall be 50 mm. Use the iron wire to colligate the screw reinforcement on the unbonded reinforcement. 10） The unbonded reinforcement shall be colligated with iron wire and laid in level. The tolerance deviation in vertical shall be 5 mm. The tolerance deviation in horizon shall be 30 mm. The construction of unbonded reinforcement shall conform to the following requirements. 1） The buffer plate shall be provided at the feeding place so as to protect the unbonded reinforcement from flushing of great amount of concrete. 2） It is forbidden that the vibrator impacts the unbonded reinforcement, screw reinforcement, anchor slab and bearing plate during vibrating. 3） The concrete shall be grouted at one time, without construction joints. The concrete strength shall be no less than 75% of the design standards during tension of unbonded reinforcement. The tension of unbonded reinforcement shall conform to the following requirements. 1） The stress shall be mainly controlled and checked with strain for pretensioning. 2） The method of supertension shall be adopted to reduce the impact of unbonded reinforcement, from the zero stress tension to the times of controlled stress. The maximum tension stress shall not exceed the 75% of the tensile stress stated. 3） Before construction, the appliance and instrument such as oil pump, hydraulic jack and tool anchor shall be checked, and the gauge pressure for the oil pump shall be set. — 19 — 4） Before the wedge anchorage is used, the static test for its assembly shall be conducted according to the relevant regulations. The efficiency of anchorage and the anchoring capacity shall be tested and the anchorage shall be greased to avoid rust and erosion. 5） Before tension, the mortar at the end of bearing plate shall be cleared and the plastic sleeve of exposed unbonded reinforcement shall be removed. 6） Before tension, record the exposed length of unbonded reinforcement in their numbers. Record the second measures after tension. The differential of both records is the actual extension value. The actual extension value shall be no more than 10% of its designed value, or no less than 5% of its designed value. 7） If any s