Harvey-Cleary Builders RFI#012
Harvey-Cleary Builders
RFI#012
8107 Springdale Rd., Suite 105 Austin, Texas 78724
Phone: (512) 928-9300 Fax: (512) 928-9331
Request for Information Project:
Travis County ME Office
GC Project No:
04-04170
RFI No:
012
Arch Project No: Subject:
Drilled Pier Depths
Received From:
Franklin Crawford Dillard (Harvey Cleary Builders - Austin)
Received Date:
7/5/2016
Sent By:
Franklin Crawford Dillard (Harvey Cleary Builders - Austin)
Sent Date:
7/5/2016
Assigned To:
Raymundo Vela, Jr. (BarnesGromatzkyKosarekArchitects)
Response Requested By:
7/8/2016
Copies To:
Sally Johnson (Travis County), Fred Peebles (BarnesGromatzkyKosarekArchitects), Raymundo Vela, Jr. (BarnesGromatzkyKosarekArchitects)
Ref. Drawing(s):
S2.1.1
Drawing Link:
Ref. Spec:
033000 - CAST-IN-PLACE CONCRETE
Location: Travis County Medical Examiner's Office Building
Cost Impact:
Cost Code: Schedule Impact:
Question from Franklin Crawford Dillard(Harvey Cleary Builders - Austin)at 05:35PM on 07/05/2016 In accordance with the Pier Preconstruction meeting held on 6/28, please confirm the drilled pier depths. The attached documents show locations of the 23', 26', and 29' pier shaft depths. Attachments: RFI 12.pdf
All Replies:
Response: Proposed drilled pier depths are acceptable for all piers with underreamed footings. Keep pier length of 25 ft for all straight shafts supporting CMU wall at mechanical yard and concrete retaining wall at north of the building. Response By: Henderson Rogers Structural Engineers, LLC (Raxit Patel, PE) Response Date: 07/06/2016
Harvey-Cleary Builders
Page 1 of 1
Printed On:07/06/2016 02:43PM
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57
23'
541
542
540
72
5
1
57
24'
539 57
Bottom of pier Elevation
##'
Approx. Pier Excavation Depth from top of pad (assuming 566 is top of pad elevation)
Top of pad may be about 2' below FFE = 568. 10" slab, 3.5" topping and 12" void box) Top of pad El = 566 (approx)
6
543
###
0
25'
538
9 56 26'
8
56
27'
5
67
6 56
28'
56
3 537
56
4
29'
535
2 56 536
1 56
30'
0
56
Frank Dillard From: Sent: To: Cc: Subject: Attachments:
Raxit Patel <[email protected]> Monday, June 27, 2016 7:24 PM Ray Vela Fred Peebles; Jason Beers; Chris Schram P. E. (Terracon); Kyle Marrou; Sally Johnson; Brock Randall; Frank Dillard; Elaine Rogers RE: {EXTERNAL} RE: MEO Construction Testing MEO Grading Overlay.pdf
Ray, Typically, drilled and under-reamed pier capacity comes from the end bearing and not the skin friction. Therefore, bearing elevation of pier is critical not necessary the pier length. I discussed this issue with Frank Dillard early this afternoon. As noted in the Terracon pdf (attached here) and structural detail 1/S3.1.2 (below), bottom of pier should be at 25 ft below top of natural grade elevation. Attached pdf identifies length of piers in reference to the building pad elevation of 566’-0”. They can be grouped as following if contractor likes: All piers north of natural grade elevation 568’ = 23 ft below building pad All piers between elevation 568’ and 565’ = 26 ft below building pad All pier south of elevation 565’ = 29 ft below building pad Please let us know if you have question or need additional information from us.
1
Thank you, Raxit Patel, PE Associate Principal 713.430.5806 Direct 713.492.5337 Mobile
From: Ray Vela [mailto:[email protected]] Sent: Monday, June 27, 2016 2:35 PM To: Raxit Patel <[email protected]> Cc: Fred Peebles ; Jason Beers <[email protected]>; Chris Schram P. E. (Terracon) ; Kyle Marrou ; Sally Johnson <[email protected]>; Brock Randall ; Frank Dillard Subject: RE: {EXTERNAL} RE: MEO Construction Testing 2
Raxit, Can you respond to the below concerning the piers.
Raymundo Vela Jr., Architect BarnesGromatzkyKosarekArchitects 1508 West 5th Street, Suite 200 Austin, TX 78703 512.476.7133 ext.115 [email protected] www.bgkarchitects.com
From: Kyle Marrou [mailto:[email protected]] Sent: Monday, June 27, 2016 1:55 PM To: Sally Johnson <[email protected]>; Brock Randall ; Frank Dillard Cc: Ray Vela ; Fred Peebles ; Jason Beers <[email protected]>; Chris Schram P. E. (Terracon) Subject: RE: {EXTERNAL} RE: MEO Construction Testing Sally, Here are our comments on the testing. -
-
-
-
Structural plans o Soils – We have fill within the building pad that will need to be tested for compaction o Wind Requirements – Inspections of the roof is not necessary for city of Austin 3rd party testing so adding this scope would be up to the owner and consultants. Project Manual o Curing Procedures – We have not included anything for special facilities to cure cylinders on site. We need to discuss further what is required o Verification of concrete strength – no comments o Compression test specimens – Terracon needs to take 2 day cylinders for the elevated structure. o Compressive strength testing – Same as above we need 2 day breaks on elevated structure CMU o The architect can verify but I believe the city of Austin will require a 3rd party inspection report for CMU walls. Structural steel o Fabrication shop inspection and testing – This would be an owner decision on this.
-
FF & FL testing – We have no problem with the FF & FL testing but do question what is driving this requirement. o Level 1 has a topping slab over the majority of the building that would negate and FF & FL testing done after we poured the slab. We can get you more information on how many pours we will have on level 1. o Level 2 we are currently planning to place in 2 pours.
-
Pier Depth – This needs to go to the structural engineer for review. Typically belled pier design is based on the standard 25’ depth of the pier to calculate loads. The engineer will typically leave off the top 5 ‘ of pier depth to determine the required depth to achieve the load support required. The structural drawings call our top of pier on the drawings and we included 25’ deep piers from that number. We cannot base depth of pier only per the geo tech report. 3
Thanks, Kyle Marrou Senior Project Manager Harvey-Cleary Builders 8107 Springdale Road, Suite 105 Austin, TX 78724 512.928.9300 – Phone 512.928.9331 – Fax 512.801.6339 – Cell www.harveybuilders.com
From: Sally Johnson [mailto:[email protected]] Sent: Monday, June 27, 2016 10:38 AM To: Brock Randall ; Frank Dillard Cc: Ray Vela ([email protected]) ; Fred Peebles ; Kyle Marrou ; Jason Beers <[email protected]>; Chris Schram P. E. (Terracon) Subject: FW: {EXTERNAL} RE: MEO Construction Testing Brock and Frank, Please read email below from Chris Schram and look at the attachments. Let me know if there are any comments. Thanks. Sally Sally Johnson, AIA Project Manager Travis County Facilities Management Dept. 700 Lavaca Ste. 1300 Austin TX 78701 (O) 512 854-4780 512-815-5825 (M)
From: Schram, Chris P. [mailto:[email protected]] Sent: Friday, June 03, 2016 12:15 PM To: Sally Johnson <[email protected]> Subject: RE: {EXTERNAL} RE: MEO Construction Testing Sally, Attached is a PDF that lists several items which we have excluded from our testing/observation scope. These items were noted in the structural plans and/or the project specifications. I would be happy to review these items with you if you have any questions. As discussed during the meeting, we included five FF/FL tests in our proposal. However, we would request input from you and the design team about what areas need to be tested. With these requirements and scheduling/sequencing information provided by the contractor, I will be able to tell you if the quantity of our services will increase or decrease. Below is a list of recipient currently included on the report distribution. Please let me know if anyone else needs to be added.
4
Lastly, we briefly discussed the bearing depth requirements for the pier foundations in the meeting earlier this week. Our geotechnical report recommends that the pier foundations bear at a depth of 25’ below existing grade (natural grade at the time of the field program) or 25’ below FFE (whichever is deeper).
Based on these requirements, I have prepared a grading overlay to determine the approximate required depth each for the pier and the bottom of pier elevations across the building. It would be good to review this with the team to make sure everyone is on the same page.
Thanks, Chris
From: Sally Johnson [mailto:[email protected]] Sent: Thursday, May 26, 2016 1:11 PM To: Schram, Chris P. Cc: Jonathan Harris <[email protected]> Subject: RE: {EXTERNAL} RE: MEO Construction Testing Chris, I will be getting the test results for the Owner. Ray Vela and Fred Peeples of BGK Architects will need to receive them for the design team. Sally Sally Johnson, AIA Project Manager Travis County Facilities Management Dept. 700 Lavaca Ste. 1300 Austin TX 78701 (O) 512 854-4780 512-815-5825 (M)
From: Schram, Chris P. [mailto:[email protected]] Sent: Friday, May 20, 2016 12:21 PM To: Sally Johnson <[email protected]> 5
Cc: Jonathan Harris <[email protected]> Subject: {EXTERNAL} RE: MEO Construction Testing Thanks Sally. I will be attending the meeting. Feel free to contact me via email or on my direct line (512.891.2641) if you have any questions. In the meantime, if you can provide me with a list of recipients whom you wish to include on the report distribution, we can add them in our system. I look forward to working with you. Thanks Chris From: Sally Johnson [mailto:[email protected]] Sent: Friday, May 20, 2016 12:18 PM To: Schram, Chris P. Cc: Jonathan Harris <[email protected]> Subject: MEO Construction Testing Mr. Schram, Thank you for your proposal on the Travis County Medical Examiner’s Office Building. We have accepted the proposal and will be letting you know through our financial channels next week. I wanted to give you a head’s up that we would like you or the appropriate people from your firm to be at the scheduled Pre-Con on June 1 at 10:00 am at our offices. Harvey Cleary is the general contractor and Kyle Marrou is the project manager. Please let me know who from your firm will be attending. Thank you. Sally Sally Johnson, AIA Project Manager Travis County Facilities Management Dept. 700 Lavaca Ste. 1300 Austin TX 78701 (O) 512 854-4780 512-815-5825 (M)
Terracon provides environmental, facilities, geotechnical, and materials consulting engineering services delivered with responsiveness, resourcefulness, and reliability.
Private and confidential as detailed here (www.terracon.com/disclaimer). If you cannot access hyperlink, please e-mail sender. Terracon provides environmental, facilities, geotechnical, and materials consulting engineering services delivered with responsiveness, resourcefulness, and reliability.
Private and confidential as detailed here (www.terracon.com/disclaimer). If you cannot access hyperlink, please e-mail sender.
6
RFI#012
8107 Springdale Rd., Suite 105 Austin, Texas 78724
Phone: (512) 928-9300 Fax: (512) 928-9331
Request for Information Project:
Travis County ME Office
GC Project No:
04-04170
RFI No:
012
Arch Project No: Subject:
Drilled Pier Depths
Received From:
Franklin Crawford Dillard (Harvey Cleary Builders - Austin)
Received Date:
7/5/2016
Sent By:
Franklin Crawford Dillard (Harvey Cleary Builders - Austin)
Sent Date:
7/5/2016
Assigned To:
Raymundo Vela, Jr. (BarnesGromatzkyKosarekArchitects)
Response Requested By:
7/8/2016
Copies To:
Sally Johnson (Travis County), Fred Peebles (BarnesGromatzkyKosarekArchitects), Raymundo Vela, Jr. (BarnesGromatzkyKosarekArchitects)
Ref. Drawing(s):
S2.1.1
Drawing Link:
Ref. Spec:
033000 - CAST-IN-PLACE CONCRETE
Location: Travis County Medical Examiner's Office Building
Cost Impact:
Cost Code: Schedule Impact:
Question from Franklin Crawford Dillard(Harvey Cleary Builders - Austin)at 05:35PM on 07/05/2016 In accordance with the Pier Preconstruction meeting held on 6/28, please confirm the drilled pier depths. The attached documents show locations of the 23', 26', and 29' pier shaft depths. Attachments: RFI 12.pdf
All Replies:
Response: Proposed drilled pier depths are acceptable for all piers with underreamed footings. Keep pier length of 25 ft for all straight shafts supporting CMU wall at mechanical yard and concrete retaining wall at north of the building. Response By: Henderson Rogers Structural Engineers, LLC (Raxit Patel, PE) Response Date: 07/06/2016
Harvey-Cleary Builders
Page 1 of 1
Printed On:07/06/2016 02:43PM
57
5
57
4
57
3
57
23'
541
542
540
72
5
1
57
24'
539 57
Bottom of pier Elevation
##'
Approx. Pier Excavation Depth from top of pad (assuming 566 is top of pad elevation)
Top of pad may be about 2' below FFE = 568. 10" slab, 3.5" topping and 12" void box) Top of pad El = 566 (approx)
6
543
###
0
25'
538
9 56 26'
8
56
27'
5
67
6 56
28'
56
3 537
56
4
29'
535
2 56 536
1 56
30'
0
56
Frank Dillard From: Sent: To: Cc: Subject: Attachments:
Raxit Patel <[email protected]> Monday, June 27, 2016 7:24 PM Ray Vela Fred Peebles; Jason Beers; Chris Schram P. E. (Terracon); Kyle Marrou; Sally Johnson; Brock Randall; Frank Dillard; Elaine Rogers RE: {EXTERNAL} RE: MEO Construction Testing MEO Grading Overlay.pdf
Ray, Typically, drilled and under-reamed pier capacity comes from the end bearing and not the skin friction. Therefore, bearing elevation of pier is critical not necessary the pier length. I discussed this issue with Frank Dillard early this afternoon. As noted in the Terracon pdf (attached here) and structural detail 1/S3.1.2 (below), bottom of pier should be at 25 ft below top of natural grade elevation. Attached pdf identifies length of piers in reference to the building pad elevation of 566’-0”. They can be grouped as following if contractor likes: All piers north of natural grade elevation 568’ = 23 ft below building pad All piers between elevation 568’ and 565’ = 26 ft below building pad All pier south of elevation 565’ = 29 ft below building pad Please let us know if you have question or need additional information from us.
1
Thank you, Raxit Patel, PE Associate Principal 713.430.5806 Direct 713.492.5337 Mobile
From: Ray Vela [mailto:[email protected]] Sent: Monday, June 27, 2016 2:35 PM To: Raxit Patel <[email protected]> Cc: Fred Peebles ; Jason Beers <[email protected]>; Chris Schram P. E. (Terracon) ; Kyle Marrou ; Sally Johnson <[email protected]>; Brock Randall ; Frank Dillard Subject: RE: {EXTERNAL} RE: MEO Construction Testing 2
Raxit, Can you respond to the below concerning the piers.
Raymundo Vela Jr., Architect BarnesGromatzkyKosarekArchitects 1508 West 5th Street, Suite 200 Austin, TX 78703 512.476.7133 ext.115 [email protected] www.bgkarchitects.com
From: Kyle Marrou [mailto:[email protected]] Sent: Monday, June 27, 2016 1:55 PM To: Sally Johnson <[email protected]>; Brock Randall ; Frank Dillard Cc: Ray Vela ; Fred Peebles ; Jason Beers <[email protected]>; Chris Schram P. E. (Terracon) Subject: RE: {EXTERNAL} RE: MEO Construction Testing Sally, Here are our comments on the testing. -
-
-
-
Structural plans o Soils – We have fill within the building pad that will need to be tested for compaction o Wind Requirements – Inspections of the roof is not necessary for city of Austin 3rd party testing so adding this scope would be up to the owner and consultants. Project Manual o Curing Procedures – We have not included anything for special facilities to cure cylinders on site. We need to discuss further what is required o Verification of concrete strength – no comments o Compression test specimens – Terracon needs to take 2 day cylinders for the elevated structure. o Compressive strength testing – Same as above we need 2 day breaks on elevated structure CMU o The architect can verify but I believe the city of Austin will require a 3rd party inspection report for CMU walls. Structural steel o Fabrication shop inspection and testing – This would be an owner decision on this.
-
FF & FL testing – We have no problem with the FF & FL testing but do question what is driving this requirement. o Level 1 has a topping slab over the majority of the building that would negate and FF & FL testing done after we poured the slab. We can get you more information on how many pours we will have on level 1. o Level 2 we are currently planning to place in 2 pours.
-
Pier Depth – This needs to go to the structural engineer for review. Typically belled pier design is based on the standard 25’ depth of the pier to calculate loads. The engineer will typically leave off the top 5 ‘ of pier depth to determine the required depth to achieve the load support required. The structural drawings call our top of pier on the drawings and we included 25’ deep piers from that number. We cannot base depth of pier only per the geo tech report. 3
Thanks, Kyle Marrou Senior Project Manager Harvey-Cleary Builders 8107 Springdale Road, Suite 105 Austin, TX 78724 512.928.9300 – Phone 512.928.9331 – Fax 512.801.6339 – Cell www.harveybuilders.com
From: Sally Johnson [mailto:[email protected]] Sent: Monday, June 27, 2016 10:38 AM To: Brock Randall ; Frank Dillard Cc: Ray Vela ([email protected]) ; Fred Peebles ; Kyle Marrou ; Jason Beers <[email protected]>; Chris Schram P. E. (Terracon) Subject: FW: {EXTERNAL} RE: MEO Construction Testing Brock and Frank, Please read email below from Chris Schram and look at the attachments. Let me know if there are any comments. Thanks. Sally Sally Johnson, AIA Project Manager Travis County Facilities Management Dept. 700 Lavaca Ste. 1300 Austin TX 78701 (O) 512 854-4780 512-815-5825 (M)
From: Schram, Chris P. [mailto:[email protected]] Sent: Friday, June 03, 2016 12:15 PM To: Sally Johnson <[email protected]> Subject: RE: {EXTERNAL} RE: MEO Construction Testing Sally, Attached is a PDF that lists several items which we have excluded from our testing/observation scope. These items were noted in the structural plans and/or the project specifications. I would be happy to review these items with you if you have any questions. As discussed during the meeting, we included five FF/FL tests in our proposal. However, we would request input from you and the design team about what areas need to be tested. With these requirements and scheduling/sequencing information provided by the contractor, I will be able to tell you if the quantity of our services will increase or decrease. Below is a list of recipient currently included on the report distribution. Please let me know if anyone else needs to be added.
4
Lastly, we briefly discussed the bearing depth requirements for the pier foundations in the meeting earlier this week. Our geotechnical report recommends that the pier foundations bear at a depth of 25’ below existing grade (natural grade at the time of the field program) or 25’ below FFE (whichever is deeper).
Based on these requirements, I have prepared a grading overlay to determine the approximate required depth each for the pier and the bottom of pier elevations across the building. It would be good to review this with the team to make sure everyone is on the same page.
Thanks, Chris
From: Sally Johnson [mailto:[email protected]] Sent: Thursday, May 26, 2016 1:11 PM To: Schram, Chris P. Cc: Jonathan Harris <[email protected]> Subject: RE: {EXTERNAL} RE: MEO Construction Testing Chris, I will be getting the test results for the Owner. Ray Vela and Fred Peeples of BGK Architects will need to receive them for the design team. Sally Sally Johnson, AIA Project Manager Travis County Facilities Management Dept. 700 Lavaca Ste. 1300 Austin TX 78701 (O) 512 854-4780 512-815-5825 (M)
From: Schram, Chris P. [mailto:[email protected]] Sent: Friday, May 20, 2016 12:21 PM To: Sally Johnson <[email protected]> 5
Cc: Jonathan Harris <[email protected]> Subject: {EXTERNAL} RE: MEO Construction Testing Thanks Sally. I will be attending the meeting. Feel free to contact me via email or on my direct line (512.891.2641) if you have any questions. In the meantime, if you can provide me with a list of recipients whom you wish to include on the report distribution, we can add them in our system. I look forward to working with you. Thanks Chris From: Sally Johnson [mailto:[email protected]] Sent: Friday, May 20, 2016 12:18 PM To: Schram, Chris P. Cc: Jonathan Harris <[email protected]> Subject: MEO Construction Testing Mr. Schram, Thank you for your proposal on the Travis County Medical Examiner’s Office Building. We have accepted the proposal and will be letting you know through our financial channels next week. I wanted to give you a head’s up that we would like you or the appropriate people from your firm to be at the scheduled Pre-Con on June 1 at 10:00 am at our offices. Harvey Cleary is the general contractor and Kyle Marrou is the project manager. Please let me know who from your firm will be attending. Thank you. Sally Sally Johnson, AIA Project Manager Travis County Facilities Management Dept. 700 Lavaca Ste. 1300 Austin TX 78701 (O) 512 854-4780 512-815-5825 (M)
Terracon provides environmental, facilities, geotechnical, and materials consulting engineering services delivered with responsiveness, resourcefulness, and reliability.
Private and confidential as detailed here (www.terracon.com/disclaimer). If you cannot access hyperlink, please e-mail sender. Terracon provides environmental, facilities, geotechnical, and materials consulting engineering services delivered with responsiveness, resourcefulness, and reliability.
Private and confidential as detailed here (www.terracon.com/disclaimer). If you cannot access hyperlink, please e-mail sender.
6
