One. How to install the fence?
In order to ensure the safety of the auditorium, the baseball stadium has a fence behind the home base. The fence is made of steel pipes and the steel column is embedded in the cement concrete foundation.
During the construction, excavate the foundation pit according to the requirements of the design documents, and reserve a hole for the cement concrete to be poured. When the cement coagulation strength reaches 70%, install the steel pipe column, straighten, adjust and adjust the height, and then make a temporary bracket to fix the hole. Fill dry and evenly mixed cement sand, fill it, and then pour water to ensure that the position of the steel column is accurate and firm.
There are two methods for the safety net: one is to connect the net directly to the steel pipe column, and the steel pipe column connects the upper and lower steel pipes firmly and the mesh piece can be directly attached. The other method is to mesh the mesh with four steel bars in series, and the entire mesh can be hung on the steel column. No matter which method, the mesh must be leveled and then welded firmly.
After hanging the net, brush an anti-rust paint, and then mix a paint.
2. How to construct the drainage project?
There are clear drainage ditch around the baseball field, or the number of rainwater mouths is connected to cement concrete pipes.
Ditch construction, to do the quasi-base line work. Use the theodolite to control the straight line direction, use the level to control the elevation, use the flat-plate vibrator when laying the cement concrete foundation, nail height control pile, the dressing base is high, the foundation top height is the surface water elevation, after the foundation cement concrete is poured, at room temperature for three days, At the beginning, ink fountains are used to play the position lines on both sides of the wall to control the position of the wall.
After the ditch is laid, the bricks shall be cleaned in time, and before the fertilizer tank is backfilled, the furrowing shall be completed.
When constructing a girder on a gully, the method of the formwork is adopted by the wall-to-wall cross-beam method. The template support and installation method is shown in Figure 3.9.
After the main body of the trench wall is completed, it shall be sprinkled with water or covered and maintained in time.
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