In the architectural design drawings, L means beam, LL means continuous beam, QL means ring beam, JL means foundation beam, TL means ladder beam, DL means ground beam, Z means column, GZ stands for structural column, KZ stands for frame column, M stands for door, and C stands for window. QL" symbol, I thought it was a wall beam at first.

1. Formal architectural design drawings must be signed by the designer, the project leader, the appraiser, the proofreader, and stamped. Registered Practitioner Seal.

2. In architectural design drawings, the length is generally in mm, unless otherwise stated; when reading the drawings, pay attention to the "Description of Construction Materials" and other drawings. In "Material Instructions", if there is a "

√ " in front of each item, it is the method used in the design. If there is no check, it is not the method used in the design.

3. For example, in the architectural design drawing: "C20 reinforced concrete JL (240×400) with 4Φ16 network Φ6＠200 hoops. "Interpreted as: the foundation beam of a reinforced concrete structure with a strength of C20, 240mm wide and 400mm high, equipped with 4 main steel bars with 16cm diameter (16mm) threads, and a rectangular ring of steel bars with a diameter of 6cm every 200mm. ( The rectangular ring is about 340--350mm long and 180mm--190mm wide)

4. As in the architectural design drawing: "C20 concrete small column (240×). 240) with 4Φ12 hoop] 6＠200. "Among them, "]6＠200" is an irregular mark and should be "Φ6＠200". It is interpreted as: a small beam of reinforced concrete structure with a strength of C20, with a cross-section of 240mm long and 240mm wide, equipped with four 12cm diameter beams. (12mm) threaded main steel bars, hoop a rectangular network of 6 cm diameter steel bars every 200mm. The height of the small column depends on the floor height marked on the project minus the height of the ring beam plus the thickness of the plate, because the ring beam and The panels are poured together.

5. For example, in the architectural design drawing: M5 cement mortar and MU10 shell ash sand bricks. "M5" indicates the strength grade of cement mortar, and "MU10" indicates shell ash sand. The strength grade of bricks. MU10 represents the average compressive strength of shellfish sand bricks ≥10Mpa.

6. QL represents ring beams, which are usually used in brick-concrete house building structures (hybrid structures). ), that is, build the wall first, and then pour the ring beams and slabs with reinforced concrete.

7. The method of frame structure, that is, pour the columns, beams, beams, slabs, etc. first and wait for them to be demolished. Build the wall after the formwork.

8. According to the requirements of quality supervision, the contractor can be required to provide certificates of steel (each batch), cement (each batch), and MU10 shell ash. Certificate of conformity for sand bricks (each batch), test certificate of cement concrete.

The JDK (Java Development Kit) you are talking about is the software development kit (SDK) of the Java language! Hope this helps!