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Re: CONCRETE: Drafting Precision

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Yes, that's a practical assumption but where if anywhere do we find this stated formally?

William L. Polhemus, Jr. P.E.
Sent from my iPhone 4

On Dec 20, 2011, at 7:32 PM, Mark Benjamin  <mark(--nospam--at)crownjade.com> wrote:

> I have always said that concrete guys don't have 1/2" on their tapes. 
> 
> "bill(--nospam--at)polhemus.cc" <bill(--nospam--at)polhemus.cc> wrote:
> 
>> Here's a question I THOUGHT I knew the answer to...but for the life of me I
>> can't locate it any longer if it ever existed.
>>  
>> What defines the standard for concrete drafting precision?
>>  
>> I know that ACI 117 is about the as-constructed tolerance for concrete elements,
>> but what about what is put on the drawings to begin with?
>> 
>> For instance, is it reasonable to show a spread footing foundation to the 1/16th
>> of an inch, as recently came across my desk? I thought I remembered that there
>> were specific precision allowances for different elements - for instance, to the
>> half-inch, or the the nearest inch, etc.
>>  
>> Where is that found? Or is it?
>>  
>> Sorry, my mind is going. I can feel it.E杖+-�m����j)�?�+-���Ǧj)pj���hʋ������-���x"�竰,�Ț�*'���^�p��'�x�H@H+��N�.n�+�����'J��r��z�^jǠ��!���0�梞�+��jX��V����ب��h�梞֝�梞�+��zfޭ��zf��*.��ݶ�azX��+)��bq�&j)ڝٚɷ�z�,��p��h�ܨ��^�h��*'1����ʋ��ȭ���y�"�歆�i��0�ǚ�{h�

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