Laying tips for grass bricks
A good grass brick construction plan is worth your preservation Top of the list: Paving the support layer first, pay attention to satisfactory water permeability when laying the support layer, and insist on firmness. The thickness of the support layer is laid according to the amount to be carried; Second: laying 2-3 cm of sand / sand mixture on the support layer; Third: When laying grass planting bricks , they can be laid in a row or trapezoidal, curved, etc. according to their favorite, and the grass planting bricks should be spliced intact; Fourth: The staggered placement of the grass planting bricks will add its fixation. It can also be framed or fixed by other methods according to the needs of the entire area. Reserve 1-1.5 cm between each grass planting brick . Gaps in case of thermal expansion; Fifth: grass planting is first filled into the bottom soil, then watered to maintain stability, and then sprinkled with grass seeds, and finally a layer of soil needs to be sprinkled, and the bottom soil and the grass planting brick must be the same height Sixth: The grass seeds need to be watered frequently during germination, do not damage them arbitrarily. Planting brick slope protection and retaining wall project construction plan Planting brick slope protection and retaining wall engineering construction plan list first section slope cut earthwork excavation construction I. Construction process Slope line stakeout → Slope top, slope surface, slope foot elevation height → Set slope line → Slope earthwork Excavation → flat and compacted slope → soil material transfer. 2. Construction methods 1. Determine the slope top line and slope foot line according to the construction plan. 2. Use a spirit level to measure the stake out to determine the elevation of the slope top line and the toe line. Set an elevation control point for every 1/3 of the slope section. Measure the original ground level at the control point, and then calculate at the control point according to the drawing. The depth should be excavated at any place, and inspected and reviewed at any time during construction. 3. According to the planned slope, use nylon rope to draw the slope line to control the excavation of the slope according to the planned slope during excavation. 4. Use backhoe excavator to excavate earthwork for slope cutting, and monitor the excavated slope surface during slope cutting. 5. After the backhoe excavation is completed, the gap between the finished surface and the planned slope surface should be checked immediately. If there are over-excavations or under-excavations, organize manual repairs. After the trimming, the slope is manually compacted. 6. The excavated earthwork is transferred to the address specified by the construction unit using a dump truck. Section 2 Earth Excavation Construction of Retaining Wall and Ditch Trench I. Construction procedure: Measure the original ground level → trench excavation → flat bottom of the trench, find slope → tamp the bottom of the trench → check elevation → soil material transfer 2. Construction methods 1. Before the construction, use a spirit level to measure the original ground level, set an elevation control point at a distance of 10 meters, measure the original ground level at the control point, and then calculate according to the drawing to dig at the control point. Depth, inspection and review at any time during construction. 2. Trench excavation is carried out by manual cooperative backhoe method. According to the construction drawing, excavate to the planned base level. 3. After the trench excavation is completed, the bottom of the trench is manually leveled, and the base trench of the trench is sloped according to the planned slope. After the slope is found, it is compacted with a tamping machine. The take-off test tamping machine was used for tamping, and the compactness of the plain soil tamping required by the plan was reached. 4. After the bottom of the tank is compacted, check the elevation of the bottom of the tank and check the elevation to make the bottom of the tank flat within 5cm. 5. The excavated earthwork is transferred to the address specified by the construction unit using a dump truck. Section III Construction of Retaining Wall, Drainage Brick Masonry and Cushion I. Construction Procedure: Cast-in-place plain concrete cushion → brickwork → reinforced concrete roofing → plastering. 2. Construction methods: (1) Concrete cushion 1. All cast-in-place concrete cushions shall be mechanically mixed, and the concrete shall be mixed strictly according to the experimental cooperation ratio when mixing. 2. The concrete pouring shall be paved manually, and D30 plug-in vibrator shall be used for vibrating. 3. After the cushion is poured, cover the straw bag for watering and maintenance. 4. After the cushion reaches the regular strength, construction of the upper brickwork begins. (II) Brickwork construction 1. Pull the setting line, use nylon line to determine the horizontal side line of the wall, and use a vertical ball to determine its straightness. 2. The masonry method is used when laying, and the blocks are staggered. 3. The flatness, straightness, uniformity of gray joints, and saturation of mortar should be performed in accordance with relevant construction standards and checked and proofed at any time. (3) Reinforced concrete roofing construction 1. The quantity, standard, model, grade and variety of roofing steel bars shall meet the planning requirements. Rebars are purchased from qualified manufacturers. They have a certificate of delivery or an experimental report, and the mechanical properties are tested at a regular sampling frequency. 2. Rebar processing. Rebar cutting machine is used to cut the steel bar, and straightening machine is used for straightening. Welding usually communicates with the welding machine on one side or on both sides. The overlap length is 10D on one side and 5D on both sides. Welds are dense and plump. 3. Rebar device. The orientation of the reinforcement device and the protective layer of the reinforcement are constructed in accordance with the planning and standard requirements. 4. The template is made of 18mm thick nine-layer boards, reinforced with 50 × 100mm wooden rafters, and placed at a distance of 500 ～ 800mm. 5. All concrete is selected by mechanical mixing. When mechanically mixing concrete, it is strictly controlled according to the experimental cooperation ratio. 6. The concrete pouring operation must be shortened if there is an intermittent time. Construction joints should be left in place where the structure is less stressed and easier to construct. 7. When the construction joint continues to be poured, it should be carried out after the compressive strength of the concrete is not less than 1.2Mpa. Before pouring concrete at the construction joint, the cement film, loose stones and weak concrete layer on the surface of the construction joint should be removed, and adequately moistened and rinsed clean. A layer of cement mortar with appropriate composition and thickness of 10-15mm to ensure the quality of the joints. 8. Cover the watering with a straw bag after the concrete is poured. (4) Plastering 1. Plaster with 1: 2 cement mortar, and strictly control the mortar-sand ratio when mixing the mortar. 2. Strictly control the thickness of plastering. Section 4 Pavement Construction of Slope Grass Planting Bricks I. Construction process: Check the base surface → elastic line → paving → maintenance → filling → planting grass. 2. Construction methods 1. Before construction of grass-brick protection slope, the slope surface should be arranged first. The slope surface should not have tree stumps, organic matter or waste. 2, checks whether the slope gradient coincides with the drawings. 3, the bottom of the pop-up "cross" the center line, vertical and horizontal reference line lay, pavement paving direction from bottom to top, a first row of paving brick, block by block row planning then partitioned. 4. The grass planting bricks are transported to the construction site using a 1T dump truck, and the data is manually transferred for paving construction. 5. Artificially built grass planting bricks should be neat, straight, and free from unevenness. Tap the exterior lightly with a rubber hammer, and the bricks are firmly combined with the bonding layer. Check the straightness of the grid and the flatness of the brick surface with the paving, and control within the allowable deviation. 6. The paved slope surface should be properly watered at the beginning of the next day and maintained for 3 days. 7. Fill soil and plant grass. After 3 days of maintenance, embed the soil in the brick grid, clean up the surface layer after filling, and then perform grass planting.