Proposal Presentation
BROOKLYN, KINGS 2015 STRUCTURAL
PROJECT
Carlos SantanaMarie BrumelotJohn MorochoAfaq Sulehria
Project Overview Architectural Information and drawings Green Roof Structural Information Structural Design:
Columns Beams Girders Base Plate Piers Footing Foundation Wall Brace System
Cost Estimation Schedule
OVERVIEW
PROJECT OVERVIEW
21-storey Building (304.5-ft high) 2 stories set back 2 underground parking levels
Location: 8791 21st Avenue, Brooklyn, NY
Footprint: 20,125 square feet Community areas & recreational areas Green Roof
Building Model
PROJECT OVERVIEW
Parking Model
PROJECT OVERVIEW
Parking Model
PROJECT OVERVIEW
Building Type: OfficeBuilding Category II (Low Hazard)Exterior Wall System: Kawneer 1600 system 2 Curtain
Wall 2 1⁄2” x 7 1⁄2”
SSG curtain wall Low to mid-rise applications
ARCHITECTURAL INFORMATION
Parking Level 1
ARCHITECTURAL DRAWINGS
Parking Level 2
ARCHITECTURAL DRAWINGS
Lobby
ARCHITECTURAL DRAWINGS
Typical Floors
ARCHITECTURAL DRAWINGS
Setback
ARCHITECTURAL DRAWINGS
Bulkhead
ARCHITECTURAL DRAWINGS
Elevations
ARCHITECTURAL DRAWINGS
Semi-intensive Green RoofRecreational environment
Handicap accessibility Plants and Woodgrain tiles
Benefits for the building Stormwater management:74.8% retention rate Durability: UV protection
GREEN ROOF
GREEN ROOF – CROSS SECTION
Design Specification: ACI 318, ASCE 7-05, and AISC Steel Construction Manual
Building height: 304.5 feet ,Parapet height: 4 feetLoadings:
Dead Load: Typical Floor = 70 psf; Roof = 157 psf.
Live Load: ASCE Standard 7-05
STRUCTURAL INFORMATION
Balanced Snow Load = 45psfGround Snow Load = 20 psfHeight of balanced snow load = 2.06 ftDrift Height = 2.92 ftDrift Width = 9.94 ftMaximum Intensity Drift Surcharge Load = 42.21 psfMaximum Roof Snow Load = 87.21 psf
STRUCTURAL INFORMATION
STRUCTURAL INFORMATION
STRUCTURAL INFORMATION
Interior Columns
STRUCTURAL DESIGN – INTERIOR COLUMNS
Interior Columns
STRUCTURAL DESIGN – INTERIOR COLUMNS
Interior Columns
STRUCTURAL DESIGN – INTERIOR COLUMNS
Interior Columns
STRUCTURAL DESIGN – INTERIOR COLUMNS
FoundationWe use the cantilever method.
W14x145W14x159
STRUCTURAL DESIGN - MOMENT FRAME COLUMNS
Lobby to 18 th floor
SIZE
STRUCTURAL DESIGN – MOMENT FRAME COLUMNS
Setback
W14x283
STRUCTURAL DESIGN - MOMENT FRAME COLUMNS
Typical Floor
Inner Core: W18x60 with 45 studs per beamOuter Core: W18x55 with 32 studs per beam
Secondary beams 7.5’o/c: - For L=37.5ft: W16x4020 studs per beam, partial composite with 1” Camber- For L= 22.5ft: W16x2613 studs per beam, partial composite.
STRUCTURAL DESIGN - BEAMS
Transfer Floor
We use W18x60 with 45 studs per beam and ¾” camber both for inside and outside the Core.
Secondary beams 7.5’o/c: - For L=37.5ft: W18x6045 studs per beam, partial composite, 1” Camber.- For L= 22.5ft: W18x4644 studs per beam, partial composite.
STRUCTURAL DESIGN - BEAMS
Set Back Floor
Inner Core: W18x60 with 45 studs per beam
Outer Core: W16x31 with 24 studs per beam
STRUCTURAL DESIGN - BEAMS
Bulkhead
W18x60 with 45 studs per beam
STRUCTURAL DESIGN - BEAMS
35-ft Long beams:W30x12422.5-ft Long beams:W14x43
STRUCTURAL DESIGN – MOMENT FRAME BEAMS
We use W33x130 Transfer Girders
STRUCTURAL DESIGN – TRANSFER GIRDERS
We Assume that the area of concrete is 1.5 times bigger than the base plate.
STRUCTURAL DESIGN – BASE PLATE
Concrete PiersWe assume d=3”.
STRUCTURAL DESIGN - PIERS
STRUCTURAL DESIGN – FOOTINGS
STRUCTURAL DESIGN – FOUNDATION WALL
Thickness: 16”Soil Pressure on total height: 905 psfMaximum Pressure: 452.4 psf
Reinforcing: #7 bars with 12 in spacingSecondary #6 bars with 12 in spacing
STRUCTURAL DESIGN – BRACE SYSTEM
STRUCTURAL DESIGN – BRACE SYSTEM
STRUCTURAL DESIGN – BRACE SYSTEM
STRUCTURAL DESIGN – BRACE SYSTEM
COST ESTIMATION
SCHEDULE
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