alexpgp | Take my translation... please!

Here's an example of what I was talking about yesterday. Maybe it's me, but I'm pretty sure the Russian original isn't quite up to snuff:

Обходные галереи на отм. 7.20.11.4 и 15.60 консоль - обходной балкон вдоль оси "А" с вылетом 2.4м от оси А, выполняется ребристой ж/б плитой. Ребра - консоли с шагом 1500м переменного сечения от 300 до 450h и плитой h = 100мм, обвязочная балка сеч. 300x300мм из бетона кл. В30 (М400), арматура кл. АIII (35ГС).

I rendered this as follows:

Runaround galleries at elevations 7.20, 11.4 and 15.60 are cantilevered runaround balconies along axis A that extend 2.4-m past axis A and which are of ribbed reinforced concrete slab construction. The ribs are brackets located at intervals of 1500 mm with cross sections that vary from 300 to 450h; the slab has h = 100 mm, and the 300x300 mm concrete framing beam is made of class V30 (M400) concrete and class AIII (35GS) rebar.

I am doing a lot of "interpretation" here, trying to figure out the sense of the sentence without letting the actual wording get in the way. :^) The only thing I'm really sure of is my fix of a couple of typos.

Elevations, you see, are given typically as a number to two decimal places, which makes 15.60 okay, but 7.20.11.4 not okay (these numbers denote a height above some datum level, defined as 0.00). The building has three floors, however, and 11.4 is exactly between 7.20 and 15.60, so I'm pretty sure what I have is what was intended, as is my take on the rib interval given in the original (1500 mm, instead of 1500 m, which is a kilometer and a half!).

Anyway, it's time to stop whining and get back to work. I'm almost one-fifth of the way through today's chunk.

Cheers...