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Re: More Concrete

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I will call the producer. However, I was going to call another one also in order to get both opinions. Thanks for the input.
Farzin S. Rahbar, SE
Vice President
David C. Weiss Structural Engineer & Associates, Inc.
(818) 227-8040 Ex. 13 Fax: (818) 227-8041

-----Original Message-----
From: Jay Shilstone <j2008.s(--nospam--at)>
To: Seaint(--nospam--at) <seaint(--nospam--at)>
Sent: Thu, Dec 16, 2010 9:23 am
Subject: Re: More Concrete

You really need to talk to the concrete producer on this. Depending on the situation and materials involved, that may not be the best solution. There are a lot of aspects to what you are describing and it is really impossible to give you a meaningful answer with such a limited background. 
Jay Shilstone 
At 11:14 AM 12/16/2010, you wrote: 

>At one of our projects, they are planning to >pour 500 yards of concrete in one day (5000 >psi). This is for a slab and they need to be >able to work the concrete after pour. 

>The contractor has suggested this: 1. The trucks >will leave the plant with only a portion of the >required water. 2. They will add the rest of the >water at the site, but not more than the >required mix design. 3. They will then add the >plasticizer to the mix to get the slump around 7” or 8”. 

>It probably takes about 45 min. for the trucks to get to the site. 

>They will have deputies at the plant and the site to monitor all the work. 

>Any thought or advice? 

>Thank you, 

>Farzin S. Rahbar, SE 
>Vice President 
>David C. Weiss Structural Engineer & Associates, Inc. 
>(818) 227-8040 Ex. 13 Fax: (818) 227-8041