Viewpoint Terrace Apartments

3939 SW Viewpoint Terrace

Portland, OR 97239

Pavilion Construction NW, LLC 4700 SW Macadam Ave. Portland, OR 97239 Phone: (503)290-5005 Fax: (503)244-1810 www.pavilionconstruction.com Page 1 of 1

To: COLAB ARCHITECTURE Date: 01/07/2015 Attn: JESSICA MOLINAR

421 SW SIXTH AVE. Contact Phone: 503-827-5339 PORTLAND , OR 97204 Contact Email: JESSICA@COLABARCHITECTURE.COM

CC’d:

REQUEST FOR INFORMATION – RFI

RFI# 26 Item : Steel Detailing Reference Drawing Page: or Specification Section:

Narrative: Please see attached list of questions regarding structural steel

Contractor Solution for Consideration:

Critical to Schedule? Cost Impact? Reply Requested by 01/12/2015 to avoid potential impacts to schedule

RFI Originated by: Drew Fisher Cell Phone: Email Address: dfisher@pavilionconstruction.com

RESPONSE INFORMATION – RFI

Description of Response:

Approved: Disapproved:

Architect: Date Reviewed: Engineer/Consultant: Date Reviewed:

See attached responses

Jessica MolinarJerome Madden 1/8/2015

1/7/2015

January 6, 2015 Sean Wert Pavilion Construction RE: View Point Terrace, Steel Detailing

Dear Sean,

Following is the list of questions I’ve compiled so far as I’ve begun detailing steel for the project. I believe it would be best to have a phone conversation with the engineer to work through some of these issues but leave that to your discretion, or you can have them contact me once they have a chance to research some of the issues I’ve identified. So far we are detailing based on documents we downloaded from your web site, starting with the construction set (9/25/14) and substituting sheets from ASIs 1-14 as necessary to create a current set. If there have been other changes made that we are unaware of, we would appreciate you bringing them to our attention.

S2.11 – There are two 4”Ø Pipe ¼” Wall Columns located between the retaining walls east of grid 5. Verify if these are intended to be 4”Ø Std. Pipe (4 ½” OD x .237” wall) or Round HSS4.000x0.250. Detail 6/S5.03 shows base plate for these columns referencing 2/S601. 2/S601 provides dimensions for the base plate totaling 11”, however the notes callout 1’1”x1’-1”. Verify the base plates for these columns are ½”x11”x11”. The detail also shows cast-in J-Bolts but the not specifies drilled in expansion anchors. Normally we would provide 5/16” oversize holes in the base plate for the cast-in J-Bolts, or 1/16” oversize holes for drill-in anchors. Please verify anchor bolt type/hole size required for these base plates. Detail 6/S5.03 shows the column landing on a concrete pilaster. Please specify the top of concrete elevation for these pilasters so we can determine proper length for the pipe column. S2.12 shows W12x22 beams framing over the tops of these columns, but no detail reference. Please verify we are to use detail10/S601 for this condition. Please provide top of W12 Beam elevation so we can determine proper length for the pipe column. Detail 10S601 is unclear how the column cap plate is to connect to the W12 beam. A note calls for threaded studs aligned on the center of the beam, but shows the bolts coming up through the beam which would then conflict with the beam web. Please verify we are to place the threaded studs on the underside of the beam bolting through holes in the column cap plate with nuts below. Detail 10/S601 also shows stiffeners in the beam and makes reference to a “Ripped W16”. Please clarify if/where Ripped W16 occurs. The note specifies ¼”x2 ½” stiffeners in the beam. The flange of the beam is only 4” wide such that these stiffeners would extend ½”+ past the edge of the flange. Please verify stiffeners for the W12 should be ¼” x width required to flush at flange. S2.12 and Detail 7/S601 shows column on top of the w12 beams. Similar issues. Please verify column is intended to be 4” Std Pipe. Please verify stiffener width should be as required to flush at flange rather than 2 ½” specified. Base plate is specified as 10” long which conflicts with the

dimensions shown (1 ½” edge + 2” to col + 4 ½” Column OD + 2” to Col + ½” Edge = 11 ½”). Also plate is not wide enough to permit the all-around fillet specified. Please clarify base plate size. W12x22 at north end of balcony is shown with moment connection per 11/S601. Please verify this is the only location the top plate is required. Also note the top plate specified matches the beam flange width and will not accommodate the fillet weld specified. Please clarify. W12 beams frame from face of concrete wall west of grid 5, cantilevering over the top of the 4”Pipe Columns east of grid 5. Please provide dimensions locating face of wall west of grid 5, center of column above east of grid 5, center of column below east of grid 5, and end of cantilever/ center of w12x22 beam running n-s shown on S212. The n-s W12x22 beam framing the east edge of the balcony is shown as continuous. We will need to introduce splices in the beam for shipping and erection. We propose a 20’ length centered on the columns leaving 1’+/- cantilever ends with hinge connections using single shear knife plates and bolted connections per 4/S601. Please provide dimensions locating columns as well as north and south ends of the w12 edge beam. S2.12 calls out L6x4x3/8” LLV @ 4’-0” OC through the length of the balcony area. Detail 2/S2.12 and 3/S601 show this angle as a L4x4. Please verify size. If this is an L6x4, does the ledger angle in 2/S212 also need to be a L6x4? S212 shows a pair of HSS4x4x1/4 columns landing on the concrete wall at the west side of the balcony area with detail 9/S601 cut for base plate detail. Verify the columns sets on top of the slab at El 187’-0”, or do the J-bolts get set in the wall at underside of slab? Engineer review 2/S212 and 9/S601 with regards to setting J-bolts and provide direction for setting column base plate. Also provide dimensions for column placement. Is the column centered on the wall (e-w) and we need the columns located w/ n-s dimensions. S2.11 Shows a series of (6) HSS4x4x1/4 columns in/around the garbage recycling rooms. Please provide dimensions locating the columns in the n-s and e-w directions. Verify that these columns extend down below the top of slab to the continuous strip footing below. Verify we are to use detail 9/S601 for all of these columns. Note that dimensions in 9/S601 are inconsistent. Plan view has 1 ½” dims going nowhere and 9” between anchors. Section View shows 8” between anchors. Verify we are to use PL1/2”x6”x12” w/ anchors 9” OC. S212 shows a series of W10 and W12 beams framing n-s between the concrete walls and the western pair of these HSS4x4 columns. Detail 10/S601 is cut for beam/column connection which shows the beam continuous over the top of the column. However, since the beam size changes we need a different detail S212 shows a series of HSS4x10x1/4 beams framing n-s between the concrete walls and the eastern set of these columns. Detail 4/S503 is cut on the southwesternmost pair of beams showing a splice/hinge connection over the top of the column. Verify if it would be acceptable to make the beam continuous and eliminate the hinge/splice. The column cap plate and threaded studs specified in the detail do not appear to have adequate clearance to install/tighten the nut. Please review/revise/provide dimensions for placement of threaded studs.

11/S601sim is cut for the connection of these HSS10x4 beams to the concrete walls. The sim condition of the detail does not appear to address the condition of an HSS beam rather than a WF beam as shown. The detail does show a 0” gap between the beam and concrete wall for the sim condition. Please verify. If we need a tight fit with no tolerance, we will need the contractor to provide as-built dims prior to fabrication. Detail 3/S502 is a section cut through the HSS4x10 beam showing a 1/4x4x4 Plate welded to the face of a continuous L6x4x3/8 LLV cut. Please provide location and spacing of the plates. Details 2 & 5/S502 show deck support ledgers around the slab on metal deck area with cast-in J-bolts. Verify it is acceptable to provide horizontal slotted holes in the angle to permit fittup. The contractor will need to provide as-built dims for the anchor locations before we can fabricate these ledger supports. Also 2/S502 has several dimensions which are unclear what they refer to. Detail 12/S601 is not cut on the plans but appears to address the condition where the slab on metal deck runs parallel to concrete walls. Contractor not change in size of angle and cast-in J-bolt placement/spacing. Verify if it is acceptable to use horizontal slotted holes in the angle for fit-up. Contractor provide dimensions to anchors prior to fabrication. S212 shows a pair of HSS4x4x1/4 columns on the south edge of the Elevator shaft starting at Level 2. Verify TOC at the base of the column = top of slab = 187’-0”. Verify we are to use the D3 and D4 supplemental details provided at these locations. Please provide dimensions locating the column centers relative to the wall corners – verify columns are centered on the walls below.

January 8, 2015

RE: RFI #26 Steel Detailing

Below are responses to the steel detailer (Keith Robinson of IDS) questions received January 6, 2015 from Pavilion. Items are numbered for clarity.

1. S2.11 – There are two 4”Ø Pipe ¼” Wall Columns located between the retaining walls east of grid 5. Verify if these are intended to be 4”Ø Std. Pipe (4 ½” OD x .237” wall) or Round HSS4.000x0.250.

COLAB: See struct response

2. Detail 6/S5.03 shows base plate for these columns referencing 2/S601. 2/S601 provides dimensions for the base plate totaling 11”, however the notes callout 1’1”x1’-1”. Verify the base plates for these columns are ½”x11”x11”. The detail also shows cast-in J-Bolts but the not specifies drilled in expansion anchors. Normally we would provide 5/16” oversize holes in the base plate for the cast-in J-Bolts, or 1/16” oversize holes for drill-in anchors. Please verify anchor bolt type/hole size required for these base plates.

COLAB: See struct. response

3. Detail 6/S5.03 shows the column landing on a concrete pilaster. Please specify the top of concrete elevation for these pilasters so we can determine proper length for the pipe column.

COLAB: t.o.c.@ pilasters is 4” below t.o. planter wall

4. S2.12 shows W12x22 beams framing over the tops of these columns, but no detail reference. Please verify we are to use detail10/S601 for this condition. Please provide top of W12 Beam elevation so we can determine proper length for the pipe column.

COLAB: See struct. response – but disregard reference to 185’-8”. Top of beam is located at bottom of grate.

5. Detail 10S601 is unclear how the column cap plate is to connect to the W12 beam. A note calls for threaded studs aligned on the center of the beam, but shows the bolts coming up through the beam which would then conflict with the beam web. Please verify we are to place the threaded studs on the underside of the beam bolting through holes in the column cap plate with nuts below. Detail 10/S601 also shows stiffeners in the beam and makes reference to a “Ripped W16”. Please clarify if/where Ripped W16 occurs. The note specifies ¼”x2 ½” stiffeners in the beam. The flange of the beam is only 4” wide such that these stiffeners would extend ½”+ past the edge of the flange. Please verify stiffeners for the W12 should be ¼” x width required to flush at flange.

COLAB: See struct response

6. S2.12 and Detail 7/S601 shows column on top of the w12 beams. Similar issues. Please verify column is intended to be 4” Std Pipe. Please verify stiffener width should be as required to flush at flange rather than 2 ½” specified. Base plate is specified as 10” long which conflicts with the dimensions shown (1 ½” edge + 2” to col + 4 ½” Column OD + 2” to Col + ½” Edge = 11 ½”). Also plate is not wide enough to permit the all-around fillet specified. Please clarify base plate size.

COLAB: See struct. response.

7. W12x22 at north end of balcony is shown with moment connection per 11/S601. Please verify this is the only location the top plate is required. Also note the top plate specified matches the beam flange width and will not accommodate the fillet weld specified. Please clarify.

COLAB: See struct. response.

8. W12 beams frame from face of concrete wall west of grid 5, cantilevering over the top of the 4”Pipe Columns east of grid 5. Please provide dimensions locating face of wall west of grid 5, center of column above east of grid 5, center of column below east of grid 5, and end of cantilever/ center of w12x22 beam running n-s shown on S212.

COLAB:

o See A2..11 for location of concrete wall west of grid 5. o Location of columns at level 2 (east of grid 5) are provided on A2.12 o Location of columns below balcony (east of grid 5) are provided on A2.11 o The location of east face of N-S W12x22 beam is shown on A2.12. Note that the dimension shown

from the east is from f.o.framing.

9. The n-s W12x22 beam framing the east edge of the balcony is shown as continuous. We will need to introduce splices in the beam for shipping and erection. We propose a 20’ length centered on the columns leaving 1’+/- cantilever ends with hinge connections using single shear knife plates and bolted connections per 4/S601. Please provide dimensions locating columns as well as north and south ends of the w12 edge beam.

COLAB: Pending review with struct.

10. S2.12 calls out L6x4x3/8” LLV @ 4’-0” OC through the length of the balcony area. Detail 2/S2.12 and 3/S601 show this angle as a L4x4. Please verify size. If this is an L6x4, does the ledger angle in 2/S212 also need to be a L6x4?

COLAB: See struct. response

11. S212 shows a pair of HSS4x4x1/4 columns landing on the concrete wall at the west side of the balcony area with detail 9/S601 cut for base plate detail. Verify the columns sets on top of the slab at El 187’-0”, or do the J-bolts get set in the wall at underside of slab? Engineer review 2/S212 and 9/S601 with regards to setting J-bolts and provide direction for setting column base plate. Also provide dimensions for column placement. Is the column centered on the wall (e-w) and we need the columns located w/ n-s dimensions.

COLAB:

o North column location pending o South column n-s location is centered on framing of adjacent west wall.

12. S2.11 Shows a series of (6) HSS4x4x1/4 columns in/around the garbage recycling rooms. Please provide dimensions locating the columns in the n-s and e-w directions. Verify that these columns extend down below the top of slab to the continuous strip footing below. Verify we are to use detail 9/S601 for all of these columns. Note that dimensions in 9/S601 are inconsistent. Plan view has 1 ½” dims going nowhere and 9” between anchors. Section View shows 8” between anchors. Verify we are to use PL1/2”x6”x12” w/ anchors 9” OC.

COLAB:

o See struct response o Dimensions pending

13. S212 shows a series of W10 and W12 beams framing n-s between the concrete walls and the western pair of these HSS4x4 columns. Detail 10/S601 is cut for beam/column connection which shows the beam continuous over the top of the column. However, since the beam size changes we need a different detail

COLAB: See struct response

14. S212 shows a series of HSS4x10x1/4 beams framing n-s between the concrete walls and the eastern set of these columns. Detail 4/S503 is cut on the southwesternmost pair of beams showing a splice/hinge connection over the top of the column. Verify if it would be acceptable to make the beam continuous and eliminate the hinge/splice. The column cap plate and threaded studs specified in the detail do not appear to have adequate clearance to install/tighten the nut. Please review/revise/provide dimensions for placement of threaded studs.

COLAB: See struct. response

15. 11/S601sim is cut for the connection of these HSS10x4 beams to the concrete walls. The sim condition of the detail does not appear to address the condition of an HSS beam rather than a WF beam as shown. The detail does show a 0” gap between the beam and concrete wall for the sim condition. Please verify. If we need a tight fit with no tolerance, we will need the contractor to provide as-built dims prior to fabrication.

COLAB: See struct response.

16. Detail 3/S502 is a section cut through the HSS4x10 beam showing a 1/4x4x4 Plate welded to the face of a continuous L6x4x3/8 LLV cut. Please provide location and spacing of the plates.

COLAB: See struct response

17. Details 2 & 5/S502 show deck support ledgers around the slab on metal deck area with cast-in J-bolts. Verify it is acceptable to provide horizontal slotted holes in the angle to permit fittup. The contractor will need to provide as-built dims for the anchor locations before we can fabricate these ledger supports. Also 2/S502 has several dimensions which are unclear what they refer to.

COLAB: See struct response

18. Detail 12/S601 is not cut on the plans but appears to address the condition where the slab on metal deck runs parallel to concrete walls. Contractor not change in size of angle and cast-in J-bolt placement/spacing. Verify if it is acceptable to use horizontal slotted holes in the angle for fit-up. Contractor provide dimensions to anchors prior to fabrication.

COLAB: See struct. response

19. S212 shows a pair of HSS4x4x1/4 columns on the south edge of the Elevator shaft starting at Level 2. Verify TOC at the base of the column = top of slab = 187’-0”. Verify we are to use the D3 and D4 supplemental details provided at these locations. Please provide dimensions locating the column centers relative to the wall corners – verify columns are centered on the walls below.

COLAB: See struct. response

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