Concrete detailing

[MrBachelor]

Quick question for you guys. When producing a detail for a concrete structure (such as curbs, catch basins, light pole bases, etc) should the new concrete depicted in the detail be shaded / hatched?

I work for a Civil Eningeering company that has hatching on nearly all of our concrete details. I recently attended a seminar on construction detailing and the instructor said that the subject of the detail should not be shaded or hatched when shown in any view (secion, plan, etc) on the detail.

I can see his point from a manual drafting point of view but with the ease in which you can change a detail in CAD why would the hatching be a problem? Some structures are reinforced, some are not and the hatching does not detract from the finished product.

Is there a published standard for concrete detailing I can reference?

 

[msquared48]

I commonly show existing concrete as hatched, but new without it or shading, as frequently reinforcement must be placed in the new concrete and hatching would only confuse the issue. Shading might obscure the detail too when printed.

Mike McCann
MMC Engineering

 

[MrBachelor]

Thanks Mike. I do see where shading or hatching could obscure the detail.

Do you know of any published standard or guide for the topic?

 

[RHTPE]

I've been away for a while - business is good and the weather has not been.

My position on this is relatively simple - BE CONSISTENT! I really think that it's a matter of personal preference. Most important is how clearly your details convey the information. I prefer to see existing concrete with grey-scale linework and lighter solid grey-scale hatch. New concrete with dark linework and the basic "concrete" hatch in either grey-scale or a very fine lineweight. With AutoCAD it's relatively easy to insure that all hatching is sent to the back (i.e. underneath all linework & text).

Again - the most important point is how clearly the intent is perceived from your details, and that you be totally consistent on both plan and sections/details.


Ralph
Structures Consulting
Northeast USA