Rafael,
Please see below.
Thanks,
Clay Barnett, P.E.
Town Engineer
Town of Addison
16801 Westgrove Drive
Addison, TX 75001-2818
Office: (972) 450-2857
From: Christiansen, Eric [mailto:echristiansen@halff.com]
Sent: Friday, May 21, 2010 9:54 AM
To: Clay Barnett
Subject: RE: Addendum- Vitruvian park
Clay,
Please see my number is bold red below.
Eric S. Christiansen, P.E., SECB, LEED AP
Senior Structural Engineer
HALFF ASSOCIATES, INC.
1201 North Bowser Road
Richardson, Texas 75081
Phone 214-346-6284
Fax 214-739-0095
Cell 972-955-2996
www.halff.com
From: Clay Barnett [mailto:cbarnett@addisontx.gov]
Sent: Thursday, May 20, 2010 4:33 PM
To: Christiansen, Eric
Subject: FW: Addendum- Vitruvian park
Eric,
I know the answer to #3. Could you look at the other two?
Thanks,
Clay Barnett, P.E.
Town Engineer
Town of Addison
16801 Westgrove Drive
Addison, TX 75001-2818
Office: (972) 450-2857
From: Gomez, Rafael [mailto:rafael.gomez@dsiamerica.com]
Sent: Thursday, May 20, 2010 9:49 AM
To: Clay Barnett
Subject: FW: Addendum- Vitruvian park
Mr. Barnett:
After checking the drawings I have some questions:
1. Are these hanger roads to be post tensioned ?; are there any specs for these rods ?
Answer: The hanger rods are NOT post-tensioned. The rods are specified as meeting ASTM A36 and will be galvanized per TxDOT Item 445, in accordance with Sheet S1-20.
2. They call for 2” bars which we do not have. We either have our #18 GR75 bars or the high strength 2.5” GR150 bars. Will any of these be acceptable ?.
Answer: While a slight increase in the size of the rod is acceptable, the diameter should be limited to 2.5" to allow for a meaningful cap plate at the bridge deck connection. (See Sheet
S1-24) The finish of the bar should be smooth to allow for slip at the bridge deck connection. This eliminates the possibility of using deformed reinforcement for the rods.
3. will all thread bars be accepted ?
Answer: All-thread bar will NOT be acceptable. Threading is limited to the top 4" of the rod per Section G-G on Sheet S1-24.
thanks
Rafael Gomez
Sales Engineer, Post-tensioning & Reinforcing Business Unit
DYWIDAG-Systems International USA Inc.
2400 N. Hwy. 287 Suite 106
Mansfield, TX 76063
Phone: +1-817-473-6161
Mobile: +1-817-822-5352
Fax: +1-817-473-1453
E-mail: rafael.gomez@dsiamerica.com
Web: www.dsiamerica.com
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