From: Jennifer Cline
Sent: Tue Mar 22 16:52:38 2016
To: Gerald Fisher
Subject: RE: 3rd & Berkley
Importance: Normal
Hard to say why they went with the 6”, I agree the reducer should have been installed at that time.
I’m guessing minimal plan review?
Jennifer Cline, P.E. | Public Works Director
Licensed in OR, WA
117 N Molalla Ave. | PO Box 248 * |Molalla, OR 97038
O: 503.759.0218 | F: 503.829.3676
From: Gerald Fisher [mailto:geraldf@pdgnw.com]
Sent: Tuesday, March 22, 2016 4:51 PM
To: Jennifer Cline <jcline@cityofmolalla.com>
Cc: Dennis Welle <dwelle@cityofmolalla.com>; Dan Zinder <dzinder@cityofmolalla.com>
Subject: RE: 3rd & Berkley
Hi Jen,
Well, TetraTech or City direction to TetraTech did you no favors. They should have installed a 12”x8” cross so you could build in a 8” backbone system for fire protection but instead they installed a 12”x6” cross. You can do one of the following:
1. Continue the 6” system and ignore your water system standards;
2. Leave the 12”x6” cross and 6” valve and install a 6”x8” reducer then 8” line which will create a choke point and potential for cavitation in the fitting; or
3. Replace the cross with the correct size and build the system to standards.
Option 1 is least cost but you will have to remember to install an 8” on Lola in the future. Option 2 will probably work as long as your pressures and velocity remain balanced using looped waterlines. Option 3 is most expensive and will correct bad decision-making in the past.
My recommendation is if the church is not taking fire suppression off of 3rd Street then choose Option 1 and leave it as a 6” waterline and make sure you install an 8” on Lola in the future. We can put a note right on the plans that the future Lola line will be 8 inches. Let me know which way you want to go and we will make it happen. Thanks Jen.
Regards,
Gerald Fisher, PE | Senior Project Manager
PROJECT DELIVERY GROUP, LLC | 3150 22nd Street SE; Salem, OR 97302
www.PDGNW.com | 503-364-4004 (O) | 503-679-9237 (C)
** CONFIDENTIALITY NOTICE: The information contained in this email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient and have received this communication in error, please contact the sender by reply email and destroy all copies of the original message. Thank you.
From: Jennifer Cline [mailto:jcline@cityofmolalla.com]
Sent: Tuesday, March 22, 2016 1:58 PM
To: Gerald Fisher <geraldf@pdgnw.com>
Cc: Dennis Welle <dwelle@cityofmolalla.com>; Dan Zinder <dzinder@cityofmolalla.com>
Subject: 3rd & Berkley
Hi Gerald,
I was able to find the plans for the Berkley water line construction. Good news, 2-12” Butterfly Valves and 2-6” Gate Valves crossing in the middle. See Sheet C2.
Jennifer Cline, P.E. | Public Works Director
Licensed in OR, WA
117 N Molalla Ave. | PO Box 248 * |Molalla, OR 97038
O: 503.759.0218 | F: 503.829.3676