Here is a concise summary of the provided transcript:
**Project:** Creating a Groove Decor in a Gypsum Board Ceiling (straight and flat areas) with Hidden Lighting
**Key Steps:**
1. **Measurement & Marking**:
* Measure and mark the ceiling (65cm x 65cm) and groove (12.5cm) dimensions.
* Use a laser level tool for accuracy.
2. **Angle Installation**:
* Install angles for hidden lighting and groove support.
* Ensure angles face outward for gypsum installation from inside.
3. **Gypsum Installation**:
* Install gypsum for straight ceiling (30cm height) and flat ceiling (18cm height).
* Cut unwanted sizes and install angles at edges.
4. **Groove Completion**:
* Install inside angles for groove support.
* Measure, cut, and install gypsum for the groove from inside.
5. **Final Touches**:
* Cover the flat and straight ceilings with gypsum.
* Paste the ceiling ( outsourced to another expert, Mohamed Saeed).
**Project Completion:** A professionally finished gypsum board ceiling with a decorative groove and hidden lighting.
Here are the key facts extracted from the text, numbered and in short sentences:
**Dimensions and Measurements**
1. Final width of the straight ceiling: 65 cm
2. Final size of the groove: 12.5 cm
3. Hidden light space from four sides: 7 cm
4. Space between straight ceiling and groove: 20 cm (from right and left)
5. Height of wall angle installation: 26 cm
6. Height of gypsum installation for straight ceiling: 30 cm
7. Height of gypsum installation for flat ceiling groove: 18 cm
8. Mark height for flat ceiling gypsum: 15 cm
9. Height of inside angle installation for groove: 6 cm
10. Size of gypsum for hidden light angle: 6 cm
**Installation and Construction Steps**
11. Marking the ceiling involves creating a plus sign at each corner, connecting points, and marking the groove in the middle.
12. The groove is L-shaped, installed in two different corners.
13. Angles are installed for the hidden light and groove, facing outside for gypsum installation from inside.
14. Wall angles are installed using a laser level tool.
15. Gypsum is installed in two parts for the groove area.
16. A spiral zipper tool or long screwdriver is used for tight spaces.
17. Inside angles are installed at various heights for the groove.
18. Gypsum is cut to size using a laser level tool mark.
19. Omega and C channels are used for the flat ceiling (explained in a separate video).
20. The ceiling is covered in multiple steps: big area without groove, groove area (in two parts), and then the groove from inside.