Halima A. Essary Select Work
214-727-8157 issuu.com/halima_arevalo arevalo.halima@gmail.com
CONTENTS
PRACTICE SAMPLES TWELVE COWBOYS WAY HQ II 3003 OLYMPUS REVELSTOKE
BUILT WORK RESEARCH UHP–FRC FACADES MULTI-NODAL BRANCHING COLUMN
DESIGN SAMPLES TRAVEL
TWELVE COWBOYS WAY
RENDERING: ARQUI300
CLIENT: COLUMBUS REALTY, BLUE STAR LAND- COWBOYS LOCATION: FRISCO, TX PROJECT TYPE: LUXURY RESIDENTIAL PROJECT SCOPE: 430,000 SF, 17 FLOORS, 158 UNITS COMPLETION: 2020 ROLE: PROJECT COORDINATOR DURATION: DD to CA
As a vital team member of a group of four, my core responsibilities included project coordination with interior consultants, structure, MEP, and landscape consultants. I participated in design documentation through 100% construction documentation Phase, reviewing architectural drawings, and producing documents, with some construction administration.
• Participated in space planning layouts for Penthouses
• Coordinated with Interiors
Consultant FF&E Selection
• Prepared door schedules, window schedules, and wall types
• Reviewed and Responded to RFI’s, shop drawings, and submittals.
• Participated in weekly coordination •
meetings with consultants, client, and contractor. Participated in quality control meetings to ensure deliverables were being met to company standards, accessibility standards, and code and zoning standards.
HQ II
RENDERING: ARQUI300 CLIENT: HEADY INVESTMENTS LOCATION: PLANO, TX PROJECT TYPE: OFFICE PROJECT SCOPE: 367,000 SF, 13 FLOORS COMPLETION: 2020 ROLE: PROJECT COORDINATOR DURATION: SD to CA
Core and Shell • Prepared interiors drawings, coordinating millwork, and material selection. • Prepared client presentation drawings, bid sets, and permit set. • Participated in the design of amenity space and main lobby. • Designed elevator cabs. • Prepared and coordinated drawings in DD and CD Phase both architectural and interiors.
• Reviewed and responded to RFI’s, shop drawings, and submittals.
• Participated in weekly coordination •
meetings with consultants and client. Participated in quality control meetings to ensure deliverables were being met to company standards, accessibility standards, and code and zoning standards.
3003 Olympus
RENDERING: ARQUI300 CLIENT: BILLINGSLEY COMPANY LOCATION: DALLAS, TX PROJECT TYPE: OFFICE PROJECT SCOPE: 323,000 SF 10 FLOORS COMPLETION: IN PROGRESS ROLE: PROJECT COORDINATOR DURATION: DD to 60% CD
Core and Shell • Prepared interiors drawings, coordinating millwork and material selection, and project intent. • Participated in the lobby and elevator design. • Coordinated with vendors’ materials and allowances. • Prepared and coordinated interior drawings in DD and CD phases.
• Participated in quality control
meetings to ensure deliverables were being met to company standards, accessibility standards, and code and zoning standards.
Revelstoke
CLIENT: PRESIDIUM GROUP LOCATION: FORT WORTH, TX
• Assisted team of 3 in site layout
PROJECT TYPE: MULTI-FAMILY
•
PROJECT SCOPE: 496,000 SF 408 UNITS
•
COMPLETION: IN PROGRESS
•
ROLE: PROJECT COORDINATOR DURATION: DD to 60% CD
and aparment layouts. Participated in design of building facades and features. Coordinated finish and design concepts with team members. Prepared and coordinated drawings in DD and CD Phase.
• Participated in quality control
meetings to ensure deliverables were being met to company standards, accessibility standards, and code and zoning standards.
WORK BUILT
DESIGN SERVICES FOR CLIENT - NEW ADDITION
Private Lake House
Entry View
The addition to an existing lake house provided a contemporary sanctuary for the clients to retire and enjoy the lake side view. The intent was to provide a play room for entertaining and lounging with family as well as a private master bedroom, bathroom, and storage above. Keeping in budget, the building is warped in stucco except for a wood panel exterior expressing the second floor and welcoming all arriving with a soft facade accentuated by single sloping metal seamed roof. Axon of the new to existing house
ROOF PLAN 922' - 10 1/4"
2ND FLOOR PLAN 914' - 10 1/4"
1ST FLOOR PLAN 905' - 10 1/4"
Main Section
Exterior Photos
Second Floor Plan
First Floor Plan
Exterior and Interior Photos
RESEARCH
Digital technologies have the potential to impact the way we design, construct, and approach innovation in the building sector, and have a positive lasting impact on society and the built environment.
UHP–FRC Facades
Applied Research Ultra High Performance – Fiber Reinforced Concrete (UHP-FRC) in a Facade Application is a grant funded investigation into the use of digital simulation, parametric modeling, and digital fabrication of advanced material casting methods for an advanced concrete sandwich panel. The introduction of UHP–FRC affords potential of an optimized facade typologydecreasing its total thickness from 8”-14” to 4”, and increasing its strength 6x commercial grade concrete.
Rendering of Self-Shading Surface Design
Research Question: What are the performative strengths of UHP–FRC over traditional precast concrete cladding systems and how can we begin to add secondary performative value that utilizes these strengths?
Hypothesis: UHP-FRC in precast sandwich panels for facade applications can produce a thinner, lighter, more durable, structurally and thermally optimized panel, and be fabricated sustainability for time and materials.
Material: UHP-FRC, Concrete, EPS Foam
Sponsors:
Computation: Rhino/Grasshopper, Ladybug, THERM, Octopus
Fabrication: CNC, 3D-Printer, Casting Team: Halima Arevalo, Jonathan Essary, Lana Shihabeddin, Samantha Richards.
Presented:
More Info: http://darc.uta.edu/#/uhp-frc-facades-1/
PHASE I
PHASE II STRUCTURAL TESTING
Standard Concrete PROTOTYPE 1
UHP-FRC DATA
PROTOTYPE 2
UHP-FRC DATA
PROTOTYPE 3
DATA
UHP-FRC DATA
PROTOTYPE 4
STRUCTURAL OPTIMIZATION THERMAL: INSULATION
Physical Element Input/Output Data Design Exercise
LOCAL CLIMATE DATA
THERMAL: SELF-SHADING
Diagram of research approach
Context Buildings are the primary source of global demand for energy and materials that produce by-product greenhouse gases (GHG). Slowing the growth rate of GHG emissions and then reversing it is the key to addressing climate change and keeping global average temperatures low. Statistics show that 40% of U.S. energy is consumed in residential and commercial buildings, with 51% of that energy going toward heating and cooling of the spaces directly related to the facade of the building. This makes the building façade, or building envelope, one of the most direct methods to develop a more efficient, sustainable, and economically feasible facade system
Manufacturing, Transport, &Construction 12%
Maintenance & Renovations 4%
84% Heating, Cooling, Hot Water, & Electricity
Typical Building Energy Usage Source: World Business Council
Phased Sprints The research investigated the potential of UHP-FRC through a series of physical prototypes and experiments. Work occurred in two main phases, 1) establish an industry baseline and initial optimization methods for UHP-FRC panel design, and 2) investigate further development of optimization of thermal performance. Four prototypes were cast each with an iterative progression from typical to optimized. Digital fabrication techniques were used to maximize the potential of generative forms and efficient mold making for casting. Biological systems informed thermal concepts of self-shading based on the effect of cacti needles protecting from the sun and retaining water through dry seasons. Self-shading was applied through digital generative modeling and simulations to find surface patterns to reduce the amount of heat gain reducing heat transfer.
Existing Disadvantages Existing Advantages • Insulation Included
–
• Inherent Weather Barrier
• Thick & Heavy • Material Amount for structurally rigidity • Travel Restrictions
• High Impact Resistance
=
• “Simple” Install • “Fast” Fabrication • Higher Quality Control
Optimized Facade System
Research
+
• UHPFRC Application • Self-Shading Surface • Component Assembly • Re-usable Formwork Diagram of Research Method
Section of Typical Sandwich
3D Diagram Thermomass MS-T
Typical Precast Casting Method
CROSS-SECTION TO MANIPULATE
COMPUTATIONAL WORK FLOW
(prescribed values)
INITIAL GEOMETRY
GEOGRAPHIC DATA
TOTAL RADIATION ANALYSIS
RESULTING SELF-SHADING ARTICULATED SURFACE 1 2 3 4 5
GENERATIVE OPTIMIZATION OF GEOMETRY
VARIABLES FROM GEOMETRY
6
GENERATIVE SURFACE RESULTS
RADIANT HEAT MAP
RADIANT HEAT MAP OF OPTIMIZED
Diagram Algorithm for Thermal Optimization of Prototype 3
Surface Area Analyzed
Backing Wythe w/Hex Pattern Polyisocanurate Insulation Facing Wythe w/ Self Shading
New Surface Temperature (Co) Panel Section Analyzed Max. Radiant Heat Min. Radiant Heat
Panel 4 Radiance Analysis with Surface Temperature at Section
THERM Analysis Models
Self-Shading Effect on Conductance THERM was used to conduct thermal heat transfer simulations of the panel after thermal optimization of the surface geometry. A computational method was developed to calculate the effective heat absorption at distributed points across the surface based on radiance analysis simulations. A cross-section of the panel was identified then divided into a range of subsections based on subsets of the range of calculated heat absorption values, processed through THERM and stitched back together. The analysis provided an insight into how a self-shaded surface effects the solar heat gain of the panel assembly based on the material of the section and radiance calculated over a given period.
Flat Exposure
Self-Shading Exposure
Prototypes
G
Geometry v. Shaded Surface Studies
DESIGN EVOLUTION OF P DESIGN EVOLUTION OF PRECAST SANDWICH PANEL UHP–FRC Precast Sandwich Panel
Standard Precast Sandwich Panel Prototype I is industry standard for a pre-cast sandwich panel. In collaboration with Gate Pre-cast and Thermomass, a typical noncomposite assembly is chosen to cast a 3’x3’ panel. The assembly consists of a 3” facing wythe, 2” EPS rigid insulation, and a 3” structural backing wythe. Each wythe is structurally reinforced with 6”x6” wire mesh for cracking resistance attached to #4 (1/2”) re-bar around the parameter and through the ferrule loop inserts for tensile reinforcement.
Phase I Phase II Phase III Prototype II establishes a UHP–
Phase I
FRC sandwich panel baseline comparable to the industry standard panel. Given the enhanced compressive strength of UHP–FRC a comparable noncomposite assembly is made. The cast is a 3’x3’ panel consisting of a 1-1/2” facing wythe, 2” EPS rigid insulation, and a 1-1/2” structural backing wythe. The Thermomass CC–130 ties between the wythes extend 1-1/2” from the insulation were cut down on each end to avoid protrusion through the face.
Standard Precast Sandwich Panel
UHP-FRC Precast Sandwich
Standard UHP-FRCPrecast Sandwich Panel Optimized Precast Sandwich Panel
Panel 1
Panel 2
Details
Details
Width:
36” Concrete Str:
Height:
36” R–Value:
Thickness: Weight:
5,000 PSI
Width:
36” Concrete Str:
10
Height:
36” R–Value:
Thickness:
8” 650 lb Heat Transfer:
15.26 Btu/hr
Weight:
Phase Phase II I:
Phase
Investigate the current industry precast sandwich panel and ca typical dimensions, assembly d Establish data points of the we bending strength, panel thickne radient properties of the panel Phase II:
Investigate the material advant sandwich panel and cast a 3’x3 compressive properties using a UHP-FRC and the same techn Establish data points of weight, strength, panel thickness, and properties to compare against Phase III:
Investigate the UHP-FRC pane non-composite sandwich pane monolithic pour to create a holl design a structurally optimized within the backing wythe while Investigate the conductive and UHP-F UHP-FRC hybrid assembly. Cast a 3’x3’ p Precast Sandwich compare against Optimized baseline.
Sandwich
25,000 PSI 10
5” 325 lb Heat Transfer:
20.47 Btu/hr
Geometry v. Shaded Surface Studies
DESIGN EVOLUTION OF PRECAST SANDWICH UHP-FRC Precast Sandwich Panel: UHP-FRCPANEL Precast Sandwich Panel: Phase I Phasefor II Prototype III tests optimizing
Phase I: IV studies further the Prototype development an optimization Investigate theof current industry standard of constructing a precastof sandwich panel and cast a 3’x3’ panel according to process self–shading surface typical dimensions, assembly details, and fabrication techniques. articulation at points the macro and compressive strength, Establish data of the weight, bending strength, panel thickness, and thermal conductive and micro level. Radiance simulation radient properties of the panel as a baseline comparison. from site climate data influences Phase II: an algorithm generating a sinuous macro surface. High of UHP-FRC as a precast Investigate the material advantages panel andspots cast a 3’x3’ andsandwich low radiance aresandwich panel with similar compressive properties using appropriate dimensions for thenUHP-FRC manipulated with a micro and the same technique minus steel reinforcement. Establish data points of weight, compressive strength, bending articulation testing intentional strength, panel thickness, and thermal conductive and radient thermal irradiance a heat sink. properties to comparelike against baseline. Further CFD and THERM studies Phase III: test the effect of the surface design Investigate the UHP-FRC as hybrid composite/ on heat irradiance andpanel heatassembly transfer.
Phase III
overall thinness and applying thermal performance using UHP– FRC. It combines standard casting methods with digital fabrication practices. Thinness is achieved through a hexagonal waffling of the structural backing wythe to maintain rigidity, minimize tie count, and provide a solid 1/2” concrete exterior surface. Thermal performance is studied through an optimized surface articulation of applied self-shading theory and an increase in the overall rigid insulation.
Standard Precast Sandwich Panel
UHP-FRC Precast Sandwich
non-composite sandwich panel. Invesigate the options for a monolithic pour to create a hollow core strucutral wythe. Digitally design a structurally optimized connection grid and geometry within the backing wythe while minimizing thermal bridging. Investigate the conductive and radient thermal properties of the hybrid assembly. Cast a 3’x3’ panel, establish data points, and compare against baseline.
UHP-FRC Optimized Precast Sandwich Panel
Panel 3
Panel 4
Details
Details
Width:
36” Concrete Str:
25,000 PSI
Width:
36” Concrete Str:
Height:
36” R–Value 1:
13
Height:
36” R–Value:
4” R–Value 2:
10
Thickness:
Thickness: Weight:
250 lb Heat Transfer:
14.33 Btu/hr
Weight:
25,000 PSI 10
8” 450 lb Heat Transfer:
–
MULTI-NODAL COLUMNAR BRANCHING Applied Research
Phase I of multi-nodal columnar branching structural formwork attempted to solve issues related to non-Euclidian branching forms, structural columnar configurations, and simplification of the formwork assembly process by introducing fabric as the primary non-rigid material used in constructing the mold. Much of the determining factor in this research is determined by a syntheses of economic factors relative to formal complexity.
Research Question: Can a multi-nodal precast structural column be fabricated with optimized material usage and increaesd section modulus-to-height ratio?
Hypothesis: By generating forwork though “bulge wall casting”, combined with multi-nodal 3D-Printed reinforced structural framework, a pre-cast concrete structural branching system can be fabricated that will centralize load points and minimize material to acheive large spans.
Material: Concrete, 3D-Printed Nodes, Steel Reinforcement, Nylon, Plywood
Computation: Rhino/Grasshopper, Scan&Solve, Kangaroo
Fabrication: CNC, 3D-Printer, Casting Team: Halima Arevalo, David Garcia, AnnRuth Warwinu, Joshua Hallett
Sponsors:
More Info: http://darc.uta.edu/#/multi-nodal-columnarbranching/
PHASE I Single Plane PROTOTYPE 1 FABRICATION/ MATERIAL TESTING Physical Element Input/Output Data Design Exercise
Multi-Plane DATA
PROTOTYPE 2
Final Geometry DATA
PROTOTYPE 3
STRUCTURAL OPTIMIZATION
GEOMETRY
3D-PRINTED NODES
INTERNAL REINFORCEMENT
Diagram of research approach
Context Bulge-Wall Casting The Bulge Wall presents a flexible system within the constraints of a standard construction process. This system allows for fabric sheets to be placed inbetween standard wall or floor systems. The typical boundary forms have cut outs imbedded in them that allow for the concrete to flow out, while still being controlled by the fabric. Within the wall, form can also be controled by placing filler objects(impactos) or connecting points between planes. The result is a mix between two seemingly opposing systems. One being the traditional restrictive planar system, the other being the free-form fabric system that at times can be difficult to control.
Work done by Mark West - Bulge Wall 2003
Mark West “Bulge Wall” Process
Method 3D Printable Re-Inforcement After the initial prototypes testing the multi-planar approach the next stage was introducing rebar with 3D printed node connections to allow for the use of ‘straight-runs’ steel reinforcement. The 3D Printed nodes part of previous research allowed for the introduction of non-euclidian geometry to be explored. Each node was tailored the connection point of the geometry decreasing the cost for custom rebar.
Fabric Form Casting The single plane trajectory explored through the work of Mark West using fabric as a formwork by the “bulge wall cast” method has been successful and has provided the ability of scaling each prototype using the same plane. However with the introduction of a secondary plane, it introduces new challenges utilizing fabric in multiple planes and effectively casting. An alternative design approach towards the formwork had to be developed but maintaining a fabric sandwich method similar to the existing approach. photographic documentation
23
Digital Optimization Digital analysis tools were used to identify structural feasibility and simulate fabric tensile behavior properties. The final geometry was optimized using kangaroo, running through a mesh relaxation process to find the most natural distribution of laods for the geometry. The cross- section had improved dramatically by tapering each leg for a smoother load distribution.This process was a key factor in the production of the final cast to decrease the possibilities of structural failures.
Columnar branch experiencing lateral forces
Moment of failure
New prototype experiencing lateral forces
Improved points of contact
Form Finding / Structural Simulation This computational workflow sought out to create a geometry which could later be tested for structural feasibility as well as informed methods for fabrication. In order to understand its structural performance, loads had to be established using Kangaroo, a physics simulator for Grasshopper. A mesh relaxation technique used to simulate fabric and tensile behavior and as well as forces such as gravity. The approach uses a mesh smoothing technique to provide the best results for an optimized geometry once all the forces were applied. Structural tests were generated using Rhino and Scan & Solve; a simulation utilizing a set of given loads including gravity, live, and dead loads to understand the structural performance of the column. BASE PROFILE
RELAXED PROFILE
Prototypes Standard single plane column
Multi-Plane Branching Column
Prototype I establishes a single trajectory “Y” column using techniques established by Mark West. Multiple prototypes were established testing different fabrics for formwork. This phase sought out to test fabric’s reusability and casting performance. It was crucial to determine the materials breatheability as well as it’s ability to maintain form.
Prototype II establishes a multitrajectory branching column. This phase sought out to refine bulge wall casting to provide multi-trajectory outcomes. Two fabrics were tested from the last prototype to identify the behavior of fabric with method and geometry. Prototypes were done using Hydrocal to simulate concrete’s behavior.
Column 1
Column 2
Hydrocal Bulge wall Casting Method
Results
Results
Material
Geometry
Permeability Reuseable Finish
Material
Geometry
Permeability
Burlap
No flexibiity, consistent radius
Yes, material seeps out.
No
Rough
Polyester 100%
little flexibiity, consistent radius
Yes
Polyester 100%
little flexibiity, consistent radius
Yes
No
Subtle Texture
Nylon 100%
Yes
Nylon 100%
No flexibiity, consistent radius, creases
No flexibiity, consistent radius, creases
Yes
Yes
Smooth
Nylon 85% Spandex 15%
Flexibile, inconsistent radius
No
Fine Texture
Yes
These prototypes started to introduce a second plan fabric casting process expanding on the existing bul performance was considered to take into account th The prototypes showed creases which would comp moment of fracture.
Multi-Plane Branching Column Prototype II establishes a multitrajectory branching column. This phase sought out to refine bulge wall casting to provide multitrajectory outcomes. Two fabrics were tested from the last prototype to identify the behavior of fabric with method and geometry.
Column 3
Hydrocal Multi-Plane Prototypes
Results Reuseable Finish No
Subtle Texture
Yes
Smooth
ne to identify a multitrajectory lge wall method. The fabrics he finish and behavior of the cast. promise the column causing a
Material
Geometry
Permeability Reuseable Finish
Polyester 100%
little flexibiity, consistent radius
Yes
No
Subtle Texture
Final Prototype explored a change in geometry informed from previous data to establish greater stability within the column. Digital testing informed an optimized geometry minimizing material while maximizing columns structural performance. Utilizing Polyester minimized the number of creases for the final cast to deminish weak points.
Design Samples
UP
This is collection of ideas and explorations. The work ranges from pass time to academic concepts, theory, and fabrication techniques. Some concepts included activating pockets of the city with the use of pavilions focusing on the five senses. Fabrication techniques explored the use of CNC machinery and quick undulated surface prototypes.
UP
Design Samples
2
East 1" = 40'-0"
East 1" = 40'-0"
3
North 1" = 40'-0"
North 1" = 40'-0"
4
South 1" = 40'-0"
South 1" = 40'-0"
5
West 1" = 40'-0"
West 1" = 40'-0"
7
(B) South Elevation 1" = 40'-0"
(B) South Elevation 1" = 40'-0"
6
(A) South Elevation 1" = 40'-0"
outh Elevation 40'-0"
9
(C) South Elevation 1" = 40'-0"
outh Elevation 40'-0"
8
(B) North Elevation 1" = 40'-0"
(B) North Elevation 1" = 40'-0"
FORGE SCIENCE & TECHNOLOGY INDOOR CAFETERIA ADMINISTRATION 10
(B) West Elevation 1" = 40'-0"
GARDEN COMMUNAL AREA
West Elevation 40'-0"
SECONDARY DROP OFF CAFETERIA PRE-K KINDERGARDEN ELEMENTARY ADMINISTRATION DROP -OFF HIGH SCHOOL GYMNASIUM
SITE PLAN N.T.S.
Travel Sketches
Travel Italy |Summer 2013 Undergraduate Study Abroad Program in Italy. The program included a study on urban design and history through some of the major cities in Italy, Florence, Rome, Venice, Milan, Sienna, Pisa, Verona, Tuscan Hill towns, and Swiss Alps. California | Los Angeles | San Diego | San Francisco |January 2016 Program based on urban theories through a critical view of each city.
Personal Travel also includes
New York | Chicago || France - Paris, Poisy, Versailles || Spain - Bilbao, Barcelona || Morocco - Marrakesh || French Polyneasia
Education Master of Architecture • University of Texas at Arlington | Arlington , TX | May 2017 Bachelor of Science in Architecture • University of Texas at Arlington | Arlington , TX | December 2014
Skills Rhino Scan & Solve Grasshopper Honeybee Ladybug Kangaroo Lunchbox Karamba & Octopus
Adobe Suite InDesign Photoshop Illustrator Premiere Autodesk Revit AutoCad
Presentation Vray-Rhino Lumion Keyshot 3D Printing CNC Milling Casting Wood Working
Professional Experience Adjunct Assistant Professor University of Texas at Arlington , Arlington TX, January 2019- January 2020 Facilitated student comprehension and application of fundamental to intermediate architectural ordering devices, design theory, & graphics. Specialized design briefs and charrettes for creative solutions to issues of space, ecology, occupancy, structure, & experiences. Participated in upper level critiques and advised on advance computational workflows. Project Coordinator O’Brien Architects, Dallas, TX, July 2017 - September 2019 Involved in projects such as Cowboys residential tower, ranging from medium to large scale muti-family, and commercial projects. Working with team members to build relationships with clients, consultants, and vendors to ensure project delivery and meeting budgets.Providing design schemes for interior amenities, material selections, and design charrettes.
Soft Skills
Design & Interiors, Creative, Innovative, Futuristic, Analytical, Self-Motivated, Business acumen, Effective Communication
Publications Peer Review Paper “High Performance Concrete Facades: UHP-FRC in Precast Sandwich Panel Design”, Facade Tectonics, June 2016
Conferences Poster Presentation “UHP-FRC Precast Concrete Facades” Precast Concrete Show PCI Convention / National Precast Concrete Association; Nashville, Tennessee, March 3rd - 5th 2016
Honors and Awards Dean’s Scholarship May 2016 International Education Fee Scholarship (IEFS) May 2013
Professional Associations NCARB AIAS
March 2015- Present Jan 2012- 2014
Languages • English : Fluent • Spanish: Fluent (native)