Educational Session: Wednesday, March 28th 8:00 - 9:30 A.M. Matsen - - PowerPoint PPT Presentation

Educational Session: Wednesday, March 28th 8:00 - 9:30 A.M.

Matsen Ford Design Associates, Inc. Waukesha, Wisconsin

¨ Load Bearing and Exterior CFS Stud Walls

§ Cold-Formed Steel NOT Light Gauge

¨ Floor System ¨ Roof System ¨ Lateral Force Resisting System

¨ ‰ Typical Stud Walls (Aligned @ 16” or 24” o.c.)

§ ‰

Generic Design

§ ‰

Proprietary

§ ‰

Top Track Designed Based on Floor System

§ ‰

HSS Distribution

¨ ‰ Openings

§ ‰

Headers (Generally Boxed)

§ ‰

Jambs (King Studs + Shoulder Studs)

Courtesy of: Wall-Tech, Inc.

¨ ‰ CFS Joists (16” or 24” o.c.)

§ ‰

Generic or Proprietary (8” to 16” deep)

§ ‰

Cementitious Board or Floor Deck w/ Lightweight Topping (1 ½” to 2” thickness)

¨ ‰ Long Span Deck

§ ‰

Typical Composite Profile

§ ‰

Dovetail Profile

§ ‰

Typically 4” to 6” total thickness

¨ ‰ Proprietary Composite Joist System (48” o.c.)

§ ‰

Delegated Design (L/D=20)

§ ‰

Concrete Slab or Slab-on-Deck

§ ‰

3”- 4” Slab + Joist Depth

¨ ‰ Hollow Core PCC Plank

§ ‰

Delegated Design

§ ‰

Set w/ Crane

§ ‰

Typically 8” PCC Plank + Topping

¨ ‰ CFS Trusses (24” to 48” o.c.)

§ ‰

Delegated Design (L/D=20)

§ ‰

Top or Bottom Chord Bearing

§ ‰

Cementitious Board or Floor Deck w/ Lightweight Topping (1 ½” to 2” thickness)

¨ ‰ CFS Joists (16” or 24” o.c.)

§ ‰

Generic or Proprietary (8” to 16” Deep)

§ ‰

Cementitious Board or Roof Deck w/ Rigid Insulation and Membrane

¨ ‰ Long Span Deck

§ ‰

Typical Composite Profile

§ ‰

Dovetail Profile

§ ‰

Typically 4” to 6” Thickness w/ Rigid Insulation and Membrane

¨ ‰ Proprietary Composite Joist System (48” o.c.)

§ ‰

Delegated Design (L/D=20)

§ ‰

Concrete Slab or Slab-on-Deck

§ ‰

3”- 4” Slab w/ Rigid Insulation and Membrane

¨ ‰ Hollow Core PCC Plank

§ ‰

Delegated Design

§ ‰

Set w/ Crane

§ ‰

Typically 8” PCC Plank w/ Rigid Insulation and Membrane

¨ ‰ CFS Trusses (24” to 48” o.c.)

§ ‰

Flat or Sloping

§ ‰

Top or Bottom Chord Bearing

§ ‰

Cementitious Board or Roof Deck w/ Rigid Insulation and Membrane

¨ ‰ CFS Shear Walls

§ ‰

X-Braced

§ ‰

Diaphragm (Gyp. Board, Steel Sheet, Proprietary)

¨ ‰ Stair and Elevator Cores

§ ‰

CMU

§ ‰

Cast-In Place Concrete

§ ‰

Pre-Cast Concrete

¨ Metreau Apartments is a mixed-use luxury apartment

complex located on the Fox River in Green Bay, WI. The eight story project features seven stories of residential units above the first story retail and amenities level and lower level parking.

¨ The residential levels are a mix of studio, one and two

bedroom and penthouse units. The amenities level features a Community Room, Fitness Center, Media Lounge and Sun Deck.

¨ Cold-Formed Steel Framing is featured as the primary

gravity and lateral load carrying structure at the residential levels above a pre-cast concrete transfer

• structure. All CFS walls and floors were panelized
• ffsite and delivered to the site.

¨ 170,000 ft2 Total, 114,000 ft2 @ CFS Levels.

¨ The upper seven stories are cold-formed steel

framed bearing walls and C-Joist floors with flat CFS pre-fabricated roof trusses.

¨ The first story and lower level is PCC post-and-

beam framing supporting PCC floor at 1st and 2nd floor transfer/podium slab.

¨ The foundation consists of concrete filled steel

piles and pile caps w/ grade beams.

¨ The main lateral resisting system is a mix of X-

braced CFS shear walls and PCC stair and elevator shear walls at the residential levels transferring thru the podium level diaphragm into PCC shear walls at the first level.

Loads and Serviceability Limits

Cast-In-Place & Pre-Cast Concrete

¨ Concrete Filled Piles w/ Pile Caps:

§ Poor Soil Bearing Capacity vs. Building Loads § Proximity to river § 10 3/4” x 3/8” Piles § Pile Caps vary from 2’-6” to 3’-11” deep supporting

groups of 1 to 30 Piles

¨ Grade Beams:

¡ 24” x 24”

¨ Slabs-on-Grade:

¡ 5” w/ WWF typically at lower level parking

Courtesy of: Wall-Tech, Inc.

¨ Post & Beam (Lower Lvl. & Level 1): ¨ Transfer Slab (Level 2):

§ Transfers Gravity and Lateral Loads § Line Loads and Point Loads (Gravity & Lateral)

Provided to PCC Designer by MFDA.

¨ Shear Walls:

§ 12” Thick Solid Stair and Elevator Cores § Transfer Beams below shear walls § Lateral Loads to Stair and Elevator Walls provided

by MFDA

Courtesy of: Wall-Tech, Inc.

Roof Trusses, Floor Joists and Wall Framing

¨ ‰ 36 “ Pre-Fabbed CFS Trusses @ 24” o.c.

§ ‰

36” Deep (Typ.) w/ 12” Deep at Corridors

§ ‰

Spans up to 44’-3”

§ ‰

1 ½” x 22 Gage Type B Deck

¨ ‰ Supported by CFS Stud Walls @ 16” o.c.

§ ‰

CFS Distribution Device for Off-Module Transfer

¨ ‰ Fall Arrest Anchors Built into Trusses ¨ ‰ Delegated Design Submittal ¨ ‰ Pre-Fabricated off-site

Interior Bearing Exterior Bearing w/ Parapet Exterior Non-Bearing w/ Parapet

¨ 12” x 16 gage (54 mil) to 12 gage (97 mil) C-

Joists (2” flange) @ 16” o.c. were used at Living Spaces & Terrace spans up to 26’ (Longer spans doubled at Terraces)

§

Spans up to 26’ (Longer spans doubled at Terraces)

¨ 8” x 16 ga. (54 mil) C-Joists @ 16” o.c. were

used at Corridors

¨ Strap & Blocking required @ +/- 6’-0” o.c. ¨ Fastened to end tracks & studs walls with 14

• ga. (68 mil) clips, Alternate for TradeReady

Rim Tracks

¨ End track was used in many locations to

eliminate the need for load bearing headers

¨ 9/16” x 22 ga. Type C Deck with LevelRock

flooring between studs walls (1 ½” total)

¨ Fall Arrest anchors built into terrace joists w/

HSS welded into webs of double joists

¨ Joists and End Tracks welded to embed plates

at PCC shear walls for lateral load transfer

¨ Floor Panel Drawing were reviewed by design

team for member and dimensional accuracy

¨ Pre-Fabricated Floor Panels built off-site

Exterior Bearing Interior Bearing

Connection at PCC Shear Wall (Gravity & Lateral Transfer) Fall Arrest Bracing at Terrace

Courtesy of: Wall-Tech, Inc.

¨ 6” x 12 gage (97 mil) to 18 gage (43 mil) C-Studs

(1-5/8” to 3” flanges) were used at exterior and interior bearing cases; 18 gage at exterior non-bearing cases; all spaced at 16”o.c. typ.

¨ ALL STUDS ALIGNED FROM FLOOR-TO-FLOOR ¨ Parapets designed for Fall Arrest Loading ¨ Bridging was cold-rolled channel with 16 gage clip

angles (or proprietary clips) @ 48” o.c.

¨ Top tracks were 1 ¼” flange of matching gage at non-

shear walls; Bottom tracks were 3” flange of matching gage

§

Pour Stop for floor topping and fastening surface for gypsum board

¨ Boxed Headers were used at typical load bearing

• penings with King + Shoulder Stud Jambs

¨ Rim Tracks and End Joists carry gravity loads at NLB

• penings and narrow LB openings with single BAF

jamb studs

¨ Wall Panel Drawings were reviewed by design team for

member and dimensional accuracy

¨ Walls were prefabricated off-site

§ Stud panels were compressed for tight seating in top

and bottom track

§ Typical fabrication was done with screw attachments

at lighter gages and welding of the heavier gages

¨ Typical Story Heights:

§ Levels 2 – 6 = 10’-8” § Level 7 = 12’-0” § Level 8 = 13’-1 1/8” (Setback)

¨ Maximum Loads per Stud:

§ Interior Bearing = 17.2 K § Exterior Bearing = 10.7 K (typ.)

= 12.9 K (Brick)

§ Exterior Non-Bearing = 1.9 K (typ.)

= 5.7 K (Brick)

¨ Studs had to be designed for eccentricity of

joists framing into the sides

Courtesy of: Wall-Tech, Inc.

¨ X-Braced:

§ Straps vary from 4” x 16 ga. to 10” x 12 ga. § Posts vary from HSS 6x6x3/16 @ 2-3, Dbl. S300’s @

4-6 & Single S250’s @ 7-8

§ Welded Ear Plates @ 1st, Dbl. Angles @ 2-6, Single

Angles @ 7-8

§ ¾”, 7/8” & 1” Diam. Bolts (A325 & A490)

¨ Balconies

§ CFS Posts at corners – 68 & 97 mil § Inset at South Elevation § Hanging at North Elevation § Off-Set Shelf-Angles and knife plates (by EOR) to

allow veneer to by-pass

§ C6 “Drop-In” Balcony Frames field bolted § Loads to posts provided by EOR

¨ Brick Relief

§ 7x6x3/8 Angle welded to CFS at window head ht. § Studs and headers designed for brick support

¨ Shear Wall Transfer at Podium

§ Embed Plates in PCC Deck for CFS Shear Walls § PCC Elevator Shear Walls stop at Podium Level § PCC Transfer Beams

¨ Parapet Design for Fall Arrest Loads

§ 1.8 K in either direction at any point § 600S200-97 nested inside 600T300-97 § Transfer loads to studs (axial & bending) § Lateral connection to structure

¨ Wall Panels:

§ 1106 Total Panels, 158 Panels per Floor § 11,508 ln. ft. total, 1,644 ln. ft. per Floor § Fabrication = 5.5 hr/150 ft2 (sheathed) § 455 HSS shapes fabricated into panels

¨ Floor Panels:

§ 670 Total Panels, 111 Panels per Floor § 97,236 ft2 total, 16,706 ft2 per Floor § Fabrication = 5.7 hr/150 ft2

¨ Shipping:

§ 12’-0” max. in one direction § Shipped flat § +/- 1500 lb./pnl. to avoid damage

¨ Erection:

§ Eight Man Crew § Walls = 5 Days per floor § Largest Panel = 28’-4” x 10’-6 ½” (1654 lb.) § Floors = 5 Days per floor incl. Deck § Largest Panel = 26’-0” x 12’-0” (1642 lb.) § Erection = 5 Days per Floor (8 man crew) § 2 weeks total per floor

¨ Project Architect:

§ Eppstein Uhen Architects – Milwaukee, WI

¨ Project Engineer:

§ Pierce Engineers, Inc. – Milwaukee, WI

¨ Specialty Engineer:

§ Matsen Ford Design Associates, Inc. – Waukesha, WI

¨ General Contractor:

§ Catalyst Construction – Milwaukee, WI

¨ Panelizer & Erector:

§ Wall-Tech, Inc. – DeForest, WI

Presented by: Patrick M. Hainault, P.E.

Matsen Ford Design Associates, Inc. Waukesha, Wisconsin