The sweeping bar is not more than 20 cm from the ground and is set vertically and horizontally.
< br >
< br >
< br >
< br >
2, the scissors support is set every 4 vertical poles, the Angle is between 45-65 degrees and should not be less than 6 meters, and the horizontal scissors support is set every 2 steps
< br >
< br >
< br >
< br >
3, vertical bar spacing: generally 1.2 meters, high span is 0.9 meters, horizontal bar spacing does not exceed 1.8 meters per step reference Zhejiang standard
< br >
< br >
< br >
< br >
upright
< br >
< br >
< br >
< br >
1. When the vertical rod is supported on the soil, the bearing capacity of the foundation should meet the force requirements to prevent uneven settlement. If the requirements cannot be met, measures such as compaction, laying of block stone or concrete cushion should be taken. The bottom of the vertical pole shall be provided with a base or a backing plate.
< br >
< br >
< br >
< br >
2, the template bracket must be set up vertical and horizontal sweeping rods. The longitudinal sweeping bar should also be fixed on the vertical bar not more than 200mm away from the base epithelium by using right Angle fasteners, and the horizontal sweeping bar should also be fixed on the vertical bar immediately below the longitudinal sweeping bar by using right Angle fasteners. When the foundation of the vertical bar is not at the same height, the high sweeping bar must be extended to the low two spans and fixed with the vertical bar, and the height difference is not more than 1 meter. The distance from the vertical pole axis above the slope to the slope should not be less than 500mm.
< br >
< br >
< br >
< br >
3, when the support method is set at the bottom of the beam, it is appropriate to use the adjustable bracket direct force transmission, the adjustable bracket and the steel pipe should be set at the junction of the horizontal bar, the height of the bracket top distance from the horizontal bar should not be greater than 300mm. The vertical bar at the bottom of the beam should be set evenly according to the beam width, and its deviation should not be greater than 25mm.
< br >
< br >
< br >
< br >
4. When the adjustable bracket is set at the bottom or top of the vertical rod, the expansion length of the adjusting screw should not be greater than 200mm.
< br >
< br >
< br >
< br >
5, vertical and horizontal distance should not be greater than 1200mm. For a formwork bracket with a height of more than 8m, or a span of more than 18m, or a total construction load greater than 10kn\/㎡, or a concentrated line load greater than 15kn \/㎡, the vertical and horizontal distance of the vertical pole should not be greater than 900mm in addition to meeting the design requirements.
< br >
< br >
< br >
< br >
6, the template bracket step, should meet the design requirements, and should not be greater than 1.8m.
< br >
< br >
< br >
< br >
7, in addition to the top of the vertical rod can be bonded, the rest of the joints must be connected by docking fasteners. Docking and bonding shall comply with the following provisions:
< br >
< br >
< br >
< br >
① The butt fastener on the vertical rod should be staggered, and the two adjacent vertical rod joints should not be located in synchronization;
< br >
< br >
< br >
< br >
② The length of the lap should not be less than 1m, should be fixed by not less than 2 rotating fasteners, and the distance between the edge of the end fastener cover plate and the rod end should not be less than 100mm.
< br >
< br >
< br >
< br >
8. When the vertical rod is extended, the distance between the two joints separated by a vertical rod in the height direction should not be less than 500mm, and the distance between the joints and the main node should not be greater than 1\/3 of the step distance.
< br >
< br >
< br >
< br >
horizon bar
< br >
< br >
< br >
< br >
1, the rod length should be connected by butt fastener, or by lap joint, and the connection should comply with the following provisions:
< br >
< br >
< br >
< br >
(1) The butt fasteners should be arranged in a cross way: the joints of two adjacent longitudinal horizontal rods should not be set in synchronization or in the same span; The distance between two adjacent joints in the horizontal direction should not be less than 500mm, and the distance between each joint and the nearest master node should not be greater than 1\/3 of the vertical distance.
< br >
< br >
< br >
< br >
② The lap length should not be less than 1m, and 3 rotating fasteners should be fixed equidistant. The distance between the cover edge of the end fastener and the end of the lap horizontal rod should not be less than 100mm.
< br >
< br >
< br >
< br >
2. A horizontal bar must be set at the main node and connected with right-angle fasteners. The center distance between the two straight Angle fasteners of the main node should not be greater than 150mm.
< br >
< br >
< br >
< br >
3, each step of the vertical and horizontal rod should be pulled in both directions.
< br >
< br >
< br >
< br >
diagonal bridging
< br >
< br >
< br >
< br >
1. The height of the template bracket exceeding 4m shall be set up as follows:
< br >
< br >
< br >
< br >
① The four sides of the template support are covered with vertical scissors, and a longitudinal and horizontal scissors support is set every four rows in the middle, from the bottom to the top.
< br >
< br >
< br >
< br >
② The four sides of the template support and the middle of every 4 rows of poles from the top floor down every 2 steps to set a horizontal scissors support.
< br >
< br >
< br >
< br >
2, the structure of the scissors support should meet the following requirements:
< br >
< br >
< br >
< br >
① The width of each scissor brace should not be less than 4 spans, and should not be less than 6m, and the tilt Angle between the scissor brace bar and the ground should be between 45° and 60°. When the Angle is 45°, the number of scissors across the vertical pole should not exceed 7; When the Angle is 60°, the number of scissors across the vertical pole should not exceed 5.
< br >
< br >
< br >
< br >
② The length of the scissors brace bar should be lapped.
< br >
< br >
< br >
< br >
(3) The scissor brace should be fixed on the extended end or vertical bar of the transverse horizontal bar intersecting with the rotary fastener, and the distance between the center line of the rotary fastener and the main node should not be greater than 150mm. ④ When setting the horizontal scissor brace, the number of frames with the scissor diagonal brace should be greater than 1\/3 of the total number of frames.
< br >
< br >
< br >
< br >
else
< br >
< br >
< br >
< br >
1. When the height of the formwork support exceeds 4m, the column, wall panel and beam slab concrete should be poured twice.
< br >
< br >
< br >
< br >
2. The template bracket should be reliably connected with the components (walls, columns, etc.) that have a certain strength in and around the construction area through the wall.
< br >
< br >
< br >
< br >
3. When the template bracket of the inclined beam plate structure is set up, it should be set up to throw the bracket, or set up the wall parts to connect with the surrounding components to resist the influence of horizontal load.
< br >
< br >
< br >
< br >
4, the overall height to width ratio of the template bracket should not be greater than 5.
< br >
< br >
< br >
< br >
5, for the height of more than 8m, or span more than 18m, or the total construction load is greater than 10kn\/㎡, or the concentrated line load is greater than 15 kn\/㎡, it is appropriate to use steel lattice component column, steel pipe door frame and other combination support system.
1. All trees are supported, and the flower shrub ground diameter is greater than 5CM. 5CM is a word support.
2. In the green space (DBH, meter diameter) below 12CM, the support height is 2 meters, and the support diameter shall not be less than 7CM; More than 13CM(DBH, m diameter) with four legs, the height of meters, support diameter of not less than 8-10CM;
3. Street trees must all be supported with four legs, and the specifications for support are the same as above.