There are also pressure to do the top, in fact, most of the use of Su, in the windowsill on the slope of about 10 percent slope.
The frustum can be flat with the elevation, can also highlight the wall. Highlight the wall approach is to pour the rain to the window will not flow directly along the wall, the course of time and pollution of the external walls (commonly known as "hanging beard"); also do windowsill for the window under the threshold and pressure top dense contact to prevent rain Pour into the room. Specific practices according to the requirements of the owners or architectural drawings, drawings are generally expressed in the elevation, practices in the building description. Common practice: C20 concrete 60 thick, with 6mm spacing between the steel 200, the width of the window hole 3 6mm reinforced deep into the two sides of the wall 100mm (reinforcement is to prevent the windowsill cracks), paint than the lower threshold of the lower 3-5mm.
1, according to the "masonry structure design specifications" GB50003-2011 Article 6.5.3 provides: To prevent or reduce the bottom of the building wall cracks, the following measures can be taken: A, increase the stiffness of the foundation ring beam.
B, in the bottom of the windowsill under the wall of the gray seam set 3 welded steel mesh or 2 Φ6 steel, and deep inside the window between the walls of not less than 600mm. C, the use of reinforced concrete sill plate, windowsill plate embedded on both sides of the wall of not less than 600mm.
2, Jinshan Huacheng windowsill pressure top only use the end of ribs. Reinforcement with 3Φ8 steel bar, into the wall on both sides of the gray stitch 60mm, for the pressure elevation, according to the drawings window, height of 100mm or so, ranging.
