Details of technical handover for design and construction drawings of home decoration companies

The technical handover details of home decoration companies' design and construction drawings include many aspects. The technical handover of construction drawings is from the design institute to the construction unit, usually passed from the design institute to the client then to the construction unit. The drawing review is organized by the client with the construction unit raising questions about the drawings and proposing simplified construction solutions.

**Technical Handover and Its Content**

**Content of Technical Handover:**

**I. Construction Preparation**

**(a) Working Conditions**

1. Complete outdoor and indoor backfilling, install underground pipe trenches.

2. Finish the concealed acceptance procedures for foundation and base projects.

3. Apply cement mortar damp-proof layer according to elevation.

4. Snap axis lines, wall body lines, and inspection lines. According to the actual specifications and dimensions of the bricks upon arrival, snap the window and door opening position lines. After verification, ensure they meet the design requirements and complete the pre-inspection procedures.

5. Set up the number of courses rods based on the design elevation at both ends of each wall.

6. Have a mortar mix ratio notification form. Adjust the laboratory mix ratio into the construction mix ratio; prepare mortar test block molds.

**(b) Material Requirements**

1. Bricks: Use MU10 machine-made red bricks. Their type, specification, and strength grade must meet the design requirements and come with a factory material certificate. Bricks must be retested. Require that bricks have one neat edge and corner on both the stretcher and header faces.

2. Cement: Use ordinary Portland cement PO32.5 produced by Zhucheng Xinxin Cement Factory. Cement must have a complete factory inspection report and a qualified retest report.

3. Sand: Use medium sand, screened through a sieve with 5mm aperture before use; it should not contain organic impurities.

4. Admixtures: Hydrated lime requires at least seven days of hydration time or lime powder for at least two days.

5. Other Materials: Wall tie bars, embedded parts, wooden bricks already treated against corrosion, etc.

**II. Main Tools**

Mortar mixer, brick bucket, crane, plaster tray, plaster bucket, straightedge, plumb bob, etc.

**III. Process Flow**

Process flow chart: Mortar mixing

Job preparation Brick watering Brick masonry Acceptance

**IV. Operating Procedures**

Brick watering: Bricks used in masonry must be watered and moistened one day before masonry. It is generally preferable for water to penetrate 1.5 cm into all four sides of the brick, with a moisture content of 10%-15%. During normal temperature construction, dry bricks must not be used on walls; during the rainy season, bricks with saturated moisture content must not be used for wall masonry. Attention should also be paid to other aspects.