现浇板面筋和底筋的长度计算有什么区别 举个例子

只算一层的面积加900mm的挑板的面积.
大厅高度（2.2m以上）无论多少,只计算一层.挑板的面积属回廊,按其水平投影面积按自然层计算.

因为在前面计算时只计算到了墙的中心线,这两部分是中心线到墙外皮的量.是两个梁的量.
在有梁板计算中,你的板和梁的计算都不对吧,梁计算时到板顶,不应减去0.12的.板计算时要减去梁的截面占的面积的.

B:X&YФ8@200,表示的是楼板（LB3）的配筋,楼板x和y向的底部钢筋都是8个的一级圆钢、间距为200mm.

能结实,真的相信我

不需要 规范中规定受力钢筋必须做180°弯钩,而分布筋不是受力钢筋 不需要弯钩,与受力钢筋正常搭接即可 施工手册中也有相关描述

柱子的净高应该是下层梁的顶面至上层梁的底面高度了.如果是无梁板的话,净高是至板底

反梁只是一种需要,因某些原因（如层高不够等）而把梁做到楼板的上部（一般的梁都是与楼板平的）,一般与板一起现浇的砼梁,跨中按T形梁设计,反梁跨中按矩形梁设计.
受力上都属于受弯构件,上部压下部拉.
在同样情况下,配筋截面都差不多,无非是梁顶标高不同而已.

Abstract
This works for the six-storey structure of brick buildings with a total height of 19.8 m.Form the basis for concrete strip foundation,floor and beam a cast-in-place reinforced concrete panels,boards,cast-in-place overall beam,the walls are located along the 240 mm circle beam.The structural design is based on architectural design of the map.Most main classified into four.First:masonry part of a high wall thickness than checking,vertical wall bearing capacity of checking,cross checking wall bearing capacity,the beam of masonry partial pressure checked and designed Pad.Second:concrete part of the plate,beams,columns were reinforced.Third:detail design,including the main staircase,Yu Peng,Tiaoyan the design.Fourth:the construction of the seismic design.The design of ± 0.000 and above only part of the design,not the basement and foundation design.Design plans for the construction of the floor,walls,stairs,and other practices are not clear,the design of the structure of the unknown are designed.
Key words:
Structural design of high thick than checking; capacity checked; reinforcement; Earthquake Resistant Design

你只需计算水箱高度,每立方是一吨,3米高就是3吨,正常楼板设计是承重是1到3吨,所以你这个重量是比较危险.另外还有一个要考虑的是总重24吨,对于楼板下面的承重柱子及墙体强度是否足够?建议你最好更改下方案,如果改不了方案就加固及增加一些支承柱.

螺旋线的长度可以用直角三角形求
（1）底边＝圆形的周长×箍筋圈数
（2）另一个直角边＝箍筋分布总高
（3）箍筋下料总长就是斜边长,这就是勾股弦问题了.
下料总长＝{(1）平方＋（2）平方} 再开平方
计算式打的太难看.