Mountain Ridge Project winter presentation The making of

Mountain Ridge Project - winter presentation - The making of Ridge University Engineering Building Owner Architect Engineer Construction Manager APPrentice Regina Pau, Sunnyvale, CA Katrin Wender, Weimar, Germany Martha Del Campo, Stanford, CA Kris Grotelueschen, Stanford, CA Grace Yamamoto, Stanford, CA AEC

Site conditions AEC

Functional spaces and relationship AEC

Gravity Loads • Dead Loads – Lightweight Concrete Slab: 55 psf – Steel Deck: 5 psf – Partition Walls: 20 psf – Finishes, Lights: 10 psf – Ducts, Pipes: 5 psf – Roofing System: 25 psf • Live Loads – – – Offices: 50 psf Classrooms: 40 psf Auditorium: 50 psf Corridors: 100 psf Snow: 50 psf (Altitude~2500 ft. ) AEC

Sample Gravity Load Path AEC

Lateral Loads • Wind – Exposure B – V 33 = 70 mph • Earthquake – Zone 3 – Type B Fault Zone AEC

Sample Lateral Load Path AEC

Foundation Considerations • Soil – – Stiff Sand Bearing Capacity: 5 ksf Low settlement Frost Depth: 4 ft. • Foundation – Wall footings at perimeter – Column footings under interior columns – Slab on Grade AEC

Construction • Budget is reduced for 4% inflation over the next 14 years. (2015 Budget = 2001 Budget x 0. 9614) • The money available for the building is further reduced by overhead and profit. AEC

Redesign - design concept “soft fluid among stones – water among stones“ AEC

Redesign - schematic layout AEC

Redesign - schematic layout AEC

Redesign - schematic layout AEC

Redesign - circulation AEC

Redesign - Structure AEC

Redesign - Structure Original Design Redesign Perimeter frame with staggered truss Retain Exterior bracing Retain King-post truss over Auditorium Retain Shear Wall core Propose braced frame core Add basement for gymnasium AEC

Redesign - Structure • Eccentrically Braced Frame – Efficient, ductile system – Eliminates need to coordinate concrete and steel workers • Shear Wall – Ductile in combination with frame system – Traditional, widely used – Less expensive in general AEC

Redesign - Construction Foundations Complete 7/1/15 Superstructure Complete 10/14/15 Finishes Complete 5/25/16 Building Closed In 1/6/16 AEC

Redesign - Construction Total Budget: $2, 842, 260 Breakdown of Costs: AEC

Redesign - Construction Equipment • Largest crane pick is a 3 kip column • Hydraulic excavator for basement • Concrete will be placed with a pump AEC

Redesign Site Parking - Construction Material Laydown Site Office Sub Trailers Site Entrance Moving Crane Additional Material Area Direction of Progression AEC

Alternative 2 - design concept “water among stone – water on the mountain” AEC

Alternative 2 1 – schematic layout 2 3 AEC

Alternative 2 1 2 - circulation 3 AEC

Alternative 2 – exterior and interior AEC

Alternative 2 - Structure AEC

Alternative 2 - Structure • Concept – Maximize floor-toceiling height • Thin slab on columns • Eliminate internal beams – Reduce finishing costs – Allow large windows APP C E AEC

Alternative 2 - Structure • Gravity System – Flat Slab System • Minimum allowable depth: 7 in. (probably greater) – Post-tensioned slab • Approximate depth: 8 in. Slab Drop panel Column – Waffle slab over Auditorium • Approximate total depth: 24. 5 in. (4. 5 in. top slab) • 30” x 30” voids, 6”ribs @ 36” AEC

Alternative 2 - Structure • Lateral Load Systems – Concrete Cast in Place SMRF – Precast Concrete SMRF – Shear Wall for redundancy Typical Member Sizes: Ext. Beam: 18 x 24 in. Ext. Column: 18 x 18 in. Int. Column: 12 x 12 in. AEC

Alternative 2 - Structure • Sample Connection Details – Cast in Place SMRF – Precast s. MRF post-tensioning mild steel bars (from pankow. com) AEC

Alternative 2 - Structure • Exterior Cladding – Finished concrete (CIP or Precast) • Saves material cost • Concrete must be designed for thermal effects – Precast stone cladding • Adds cost for material and installation • Lightweight materials • Lower life-cycle costs (i. e. insulation) AEC

Alternative 2 - Structure • Roofing System and Skylight Wood truss with steel tension members AEC

Alternative 2 Foundations Complete 6/24/15 Superstructure Complete 9/23/15 - Construction Building Closed in 12/16/15 Finishes Complete 6/1/16 AEC

Alternative 2 - Construction Total Budget: $2, 732, 912 Breakdown of Costs: AEC

Alternative 2 - Construction Equipment • Largest crane pick for bucket of concrete • Hydraulic excavator foundations • Concrete will be placed with a bucket AEC

Alternative 2 Site Entrance Sub Trailers - Construction Material Laydown Site Office Direction of Progress Moving Crane Additional Material Area Site Parking AEC

Alternative 3 - design concept “water among stones – waterfall and rocks“ AEC

Alternative 3 – schematic layout AEC

Alternative 3 – schematic layout AEC

Alternative 3 – schematic layout AEC

Alternative 3 - circulation AEC

Alternative 3 - Structure AEC

Alternative 3 - Interaction • A/E Interaction A Proposal E Proposal A Feedback E Change Concept Design AEC

Alternative 3 - Structure • Lateral Load Systems – Steel EBF Core – Concrete Shear Wall Core • Gravity Load Systems – Concrete Frame – Steel Frame – Composite floor slab Steel: Concrete: Typical Column: W 14 x 74 18” x 18” Worst-Case Beam: W 18 x 60 18” x 30” AEC

Alternative 3 - Structure • Details Steel: Concrete: AEC

Alternative 3 - Construction Foundations Complete 6/18/15 Finishes Complete 5/12/16 Superstructure Complete 9/11/15 Building Closed In 12/10/15 AEC

Alternative 3 - Construction Total Budget: $3, 447, 825 Breakdown of Costs: AEC

Alternative 3 - Construction Equipment • Largest crane pick for 3. 5 kip steel column • Hydraulic excavator foundations • Concrete will be placed with a pump at the foundations, and shotcrete for the shear walls AEC

Alternative 3 Site Parking - Construction Material Laydown Site Office Sub Trailers Site Entrance Moving Crane Direction of Progress Additional Material Area AEC

Construction AEC

Final Decision Matrix A E C $2. 8 Million 5/25/16 $2. 7 Million 6/01/16 $3. 4 Million 5/12/16 • Owner’s choice • No extended footprint • Fun spiral stairs • 2 Entrances Benefits • Efficient structural • Concrete frame & slab • Privacy/security req. good • Concrete shear core • better MEP & floor depth • Concrete system • Straightforward structure Drawbacks • Design like last years • Public space areas • Lack of daylight • Only one entrance • Extended footprint • Not risky for A • Roof truss & MEP intake • Deep floor beams & MEP • Lack of vertical • Stream threats mechanical path space • Skylight leaking

Design Process timeline Week 1 -3 Week 4 -6 Week 7 -8 Week 9 -10 A Understand program, discussion Redesign, consult E Initial Alt 3 concepts, form idea Completion A proposal E Collecting general information Redesign & A Alt 2, consulting mentors & C Alt 3 & talking with A C Collecting general information & mentors Quantities, m Schedule & Quantities & aterials (AE), Equipment & materials schedule & mentors APP confusion Decide on Alt 2 Archit. Consult A Design basics and consult AEC Asking and adjusting

Team Interaction- Clerestory Windows E C $$$ EC APP A A Concept! C E OK APP Narrow Hallways AEC

Lessons Learned/ Future Improvements Lessons: Improvements: • Skill recognition • More efficient presentation of ideas • Clarified discipline goals and roles in design, how disciplines respond to information • Clear, straightforward, proactive synchronous and asynchronous communication • More thorough use of communication resources (i. e, Recall) • Better online documentation of information and process • Organizing information for documentation (i. e. , web site) • Working with technology AEC

Final choice - challenges architecture: construction manager: some interesting questions still open Reduce budget through continued value engineering - facades ? - roof garden ? - spiral stairs engineer: Concrete system Atrium skylight MEP space team interaction: Value enginering for budget Integration of mechanical systems into current architecture Use of shotcrete for shear walls System for glass roof area AEC