Mr KP

[kevin.putnam]

The property ConcreteCompression returns a typical value of 7620000.

The API document states:

Applies to concrete-based structural assets. The value is in Newtons per foot meter (N/(ft · m)).

Can anyone convert this to a more familiar representation of concrete strength such as C25,C30 etc.

Also

RebarCoverType rebarCoverType = rebarHostData.GetCommonCoverType();
double cover = rebarCoverType.CoverDistance;

Typiclal value is 0.065616797900262466. The rebar cover displayed in the Revit properties of the member in question is 35mm. Again can anyone convert this?

[RPTHOMAS108]

Yeah I don't even know what a foot metre is in terms of the internal units but what I do know:

C25/30 is the cylinder and cube crushing strength respectively, measured in MPa (N/mm2). The Eurocodes takes the cylinder predominantly for characterising concrete strength.

If I divide 7620000 by 25x1000 it gives me 304.8 which I recognise as being the number of mm per ft (25.4 * 12).

So to convert whatever that internal unit is to N/mm2 you can do 7620000 / (304.8 * 1000).

Rebar cover is more straightforward the internal will be ft and in the metric world the external will be mm so

0.065616797900262466 * 304.8 = 20mm.