Drawing question 1 and 2 are gluten or negative gluten? 3 is the bathroom, how is its steel bar

One, 1, and 2 are all gluten. The easiest way to determine whether the slab reinforcement is gluten or bottom reinforcement is to see whether the hook is under or on top (below.

tendons, on top is the bottom tendon).

Second, 3 is the bathroom, its steel bars are arranged on this plane without marking, look at the description in this picture - the description should be written with words.

Rib arrangement (the elevation level will also be shown in the description of this figure).

Third, the rebar symbol is not easy to play on the drawing, so many times the designer casually replaces it with a symbol (there are also drawings to display.

The version is not the same as the original design, so the original rebar symbol has become like this), to know how many levels of rebar or to see the knot.

General description of the structure design; Sometimes the [ symbol may represent the tertiary steel (I don't see there is also a ] symbol if both symbols are the same.

From time to time, then this symbol is casually hit).

1.Gluten – is said to be in the position, on top; Negative reinforcement - it is said to be tensile by negative bending moment. For single-layer reinforced floor panels, gluten is negative gluten, and negative gluten is also gluten. The title is the same, gluten and negative gluten are all it;

2.[8@150 is HPB300, 8, pitch 150mm.] ]—HRB335、﹛—HRB400、﹜—HRB500。

If you use CAD to draw, you can't type the standard reinforcement symbol, and Tianzheng or PKPM can draw it, but it is often not recognized between different versions;

3.In the 3 places mentioned in the question, you can find where on the map there must be an explanation of the elevation and reinforcement of the board surface.

4.Please do not use it again.

Grades 1, 2, 3, and 4 are often confused with seismic ratings, and the code was abandoned eleven years ago.

The first, second, third, and fourth grades are called steel bar grades.