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Sustainable Building Solutions


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    • 1. “If you can dream it, we can build it.
      Your imagination is our only limitation.”
      125 South Wacker Drive, Suite 300, Chicago, Illinois 60606, U.S.A.
      Phone: (312) 253-7401 Fax: (312) 253-7402
    • 2. Our Company
      Over 22 years of construction expertise
      Performed work on over 400 projects for a client base of over 30 developers that included:
      Clark Construction
      Turner Construction
      Pulte Homes
      RJ Group
      Centex Homes
      McShane Construction
      Trammel Crow
      Paul Schwendener
      MCL Construction
      And most top ten developers in the Chicago land area.
      Verifiable track record for the successful and timely completion of multi-million dollar residential and commercial projects.
      Roots in the Middle East
    • 3. Our Team
      Senior Management:
      Hysam Darwan Co-Owner - President 22 Years
      Al Darwan Co-Owner - VP Operations 15 Years
      Mohamad Kaswani VP Strategic Planning & Development 10 years
      Finance & Administration:
      Dan Ingersol Financial Manager 12 Years
      Dana Volberg Contracts Manager 6 Years
      Sales & Marketing
      Jennifer Stewart Sales Manager 4 Years
      Ken Wherli Project Management 12 Years
      Ken Hostert Excavation & Concrete work 8 Years
      Tim McMillan Framing & Carpentry 10 Years
      Joe Miller Exterior Cladding 8 Years
      Pablo Lopez Drywall & Insulation 20 Years
      John Bali MEP 15 Years
    • 4. Our Contribution To Your Success
      DASCO Construction has the experience and the knowledge to build for high performance and sustainability, reducing energy consumption while maintaining quality of life. We offer:
      • Well proven processes
      • 5. Sustainable Site Planning
      • 6. Advanced wall sytems (extremely tight envelopes):
      Indoor Environmental Quality
      Optimize energy performance
      Increase thermal comfort
      Efficient material use
      Energy & Atmosphere Efficiency
      Passive Solar
      High Performance Windows
      Water Efficiency
      Low Flow Fixtures
      High Efficiency Boiler/Water Heater
      ENERGY STAR® Appliances
    • 7. Our Contribution To Your Success
      • Common Appearance: Any structure you build here can be built wih this system.
      • 8. Faster : Reduced field labor, Ease of Installation.
      • 9. Better, energy efficient, and more affordable.
      • 10. Design Flexibility.
      • 11. Code Compliant: Cold-formed steel framing is code approved (IRC, IBC, CABO and ICC).
      • 12. Consistent Quality, also Highest strength-to-weight ratio of any building material, Light Weight.
      • 13. We provide a LEED™ certified product based on its virtually 100% recycled steel content.
      • 14. Fire Safety - 100 % Non-combustible.
      We will be part of your solution, because:
      • We have worked for the largest U.S Developers.
      • 15. We have worked for the top JD Power rated US Developers.
      • 16. Our experience working in the most competitive and time oriented construction environment
    • 17. Innovative Building Systems
      Structural Frame already manufactured in off site facility, thus
      • clean job site
      • 18. Efficient Processes
      • 19. Construction Speed
      • 20. Less waste
    • 21. Innovative Building Systems
    • 22. Innovative Building Systems
    • 23. Innovative Building Systems
    • 24. Innovative Building Systems
      Day 1
    • 25. Innovative Building Systems
    • 26. Innovative Building Systems
      Day 3
    • 27. Innovative Building Systems
      Day 5
    • 28. Innovative Building Systems
      Day 7 (Time could be saved if installed on panels )
    • 29. Innovative Building Systems
      Day 8
      Interior Work starts simoltanously
    • 30. Innovative Building Systems
      Day 9
    • 31. Innovative Building Systems
      Day 10
    • 32. Innovative Building Systems
      Day 15
    • 33. Innovative Building Systems
      Day 45
    • 34. Innovative Building Systems
      Day 120
    • 35. Market Segments
      Our solution applies to all segments of the construction Industry and is divided into several segments:
      ■Universities ■Single Family ■High-Rise
      ■Schools ■Multi-Family ■Mid-Rise
      ■Medical Center ■Assisted Living ■Low-Rise
      ■Religious ■Military Housing ■Retail
      ■Hospitals ■Manufactured & Modular Housing ■Office Buildings
      ■Apartments & Condominiums ■Hotels/Motels
      ■Labor Housing ■Warehouses
      ■Industrial Facilities
    • 36. 22
      Metal Framing –Evolution of Cold-Formed Structural & Non-Structural Framing
      Began around 1850. In North America, 1946.
      Some of the countries using the system today:
      USA, CANADA, WESTERN & EASTERN EUROPE, CHINA, Austria, New Zealand, India, Malaysia, Indonesia, South Africa, Gulf countries, and Algeria.
      What is Cold-Formed Steel?
      • Made from structural quality sheet steel that are formed into shape either through press-braking blanks sheared from sheets or coils, or more commonly, by roll forming the steel through a series of dies. No heat is required to form the shapes (unlike hot-rolled steel), and thus the name cold-formed steel.
      • 37. Cold-formed steel members and other products are thinner, lighter, easier to produce, and typically cost less than their hot-rolled counterparts.
      • 38. A variety of steel thickness is available to meet a wide range of structural and non-structural applications.
    • Why consider CFS?
      Advantages of CFS Framing
      Cold-formed steel framing is a versatile structural product for use in load-bearing and curtainwall construction, floor and roof assemblies, mansard and truss frames, as well as interior nonstructural partitions.
      There are several reasons for this increased interest in steel framing. The popularity of corrosion resistant, galvanized steel framing can be attributed to these documented benefits:
      Design Flexibility.
      Speed: Reduced field labor
      Code Compliance. Cold-formed steel framing is code approved (IRC, IBC, CABO and ICC).
      Cold formed steel is a LEED™ certified product based on its virtually 100% recycled steel content.
      Common Appearance.
      Consistent Quality.
      Ease of Installation.
      Highest strength-to-weight ratio of any building material
      Light Weight.
      Fire Safety - 100 % Non-combustible.
    • 39. Durability of Galvanized Steelng for Residential Building
      Do Steel Homes Corrode?
      A study of Durability of Galvanized Steel Framing for Residential Building by the International Zinc Association (IZA) that measures actual zinc and zinc alloy coating corrosion rates of steel framing samples in four different home environments in the U.S.A. and Canada. The NAHB Research Center, a subsidiary of the National Association of Home Builders (NAHB) was the research contractor. Results presented in this summary report are based on the corrosion data presented in the Research Center’s seven-year sample retrieval report that is available from IZA or from the Steel Framing Alliance’s online store at
      Estimated life expectancy based on the average mass loss (using nominal coating weights) ranged from 280 to over 1000 years with an average of 611 years for all samples at all locations.
    • 40. Building Codes
      Cold-formed steel framing is code approved (IRC, IBC, CABO and ICC).
      • International Building Code
      • 41. International Residential Code
      • 42. Building Construction and Safety Code – NFPA 5000
    • 43. Code Referenced Standards:
      • Light gauge steel is designed in accordance with the North American Specification (NASPEC) which covers the US, Canada and Mexico.
      • 44. The US building codes (International Building Code and International Residential Code), developed by the International Code Council (ICC), reference the NASPEC for the design of light gauge steel.
      • 45. AISI Standards have been adopted by ICC International Building Code 2006 and NFPA 2005-2006 Building Codes. AISI Standards Adopted by IBC, 2006 Edition and NFPA, 2005-2006 Edition:
      • 46. North American Cold-Formed Steel Specification 2001 Edition with 2004 Supplement
      • 47. 2004 Edition of Cold-Formed Steel Framing Standards
      • 48. In addition, the Australian/New Zealand (AS/NZ) light gauge steel code that is also based on the US NASPEC specification.
      • 49. Computer softwares.
    • 50. Code Referenced Standards:
      American Iron and Steel Institute (AISI) Design Specifications and Standards:
      North American Specifications for the Design of Cold-Formed Steel Framing (NASPEC).
      Standard for Cold-Formed Steel Framing - General Provisions (General Provisions Standards)
      Standard for Cold-Formed Steel Framing – Wall Stud Design (Wall Stud Standard)
      Standard for Cold-Formed Steel Framing – Header Design (Header Standard)
      Standard for Cold-Formed Steel Framing – Truss Design (Truss Standard)
      Standard for Cold-Formed Steel Framing – Lateral Design (Lateral Standard)
      Standard for Cold-Formed Steel Framing – Prescriptive Method (Prescriptive Method, or MP)
      ASTM Standards
      Standards for Sheet Steel Used for Framing (Includes Coating)
      A1003/A1003M which references the following:
      A653: Galvanized and Galvanneal coatings: most common
      Other coatings and sheet steel types: A792, A875, A463, A879
      Standards for Manufacture of Framing Members:
      C645: Nonstructural members: typically less than 33 mil thickness
      C955: Structural members: greater than 33 mil thickness
      Standards for Installation of Framing Members:
      C754: Installation of Nonstructural Members
      C1007: Installation of Structural Framing Members
      Fastener Standards for Screws:
      C1513: Steel Tapping Screws for CFS Connections
      C1002: Self-Piercing Screws
      C954: Self-Drilling Screws
    • 51. Code Referenced Standards: (continued)
      AWS Welding Standards
      D1.1 Standard Welding Code – Steel
      D1.3 Standard Welding Code 0 Sheet Steel
      Gypsum Association Standards
      Fire Resistance Design Manual GA-600
      Application and Finishing of Gypsum Panel Products GA-216
      AWCI Standard
      Standard Practice for the Testing and Inspection of Field Applied Thin-Film Intumescent Fire-resistive Materials
      Factory Mutual Standards
      American National Standard for Evaluating Insulated Wall or Wall and Roof/Ceiling Assemblies, Plastic Interior Finish Materials, Plastic Exterior Building Panels, Wall/Ceiling Coating Systems, Interior and Exterior Finish Systems FM-4880.
    • 52. Designing with CFS Framing
      There are basically three resources available to guide the design of a typical CFS home application:
      Prescriptive Method for Residential Cold-Formed Steel Framing, 2000 Edition; Sections R505, R603 and R804 of the International Residential Code, 2000 Edition; and,
      Manufacturer technical data.
      Other publications and technical bulletins are also available for specific components or design methodology ( and For example:
      Design Guide for Cold-Formed Steel Trusses
      Shearwall Design Guide
      Low-Rise Residential Construction Details
      Durability of Cold-Formed Steel Members
      Builder's Stud Guide
      L-Shaped Header Field Guide
      Builder's Guide to Residential Steel Floors
      Inspection Checklist for Cold-Formed Steel Framing
      Shear Transfer at Top Plate: Drag Strut Design
      Vertical Lateral Force Resisting System: Boundary Elements
      Lateral Load Resisting Element: Diaphragm Design Values
      Screw Fastener Selection for Light Gauge Steel Frame Construction
      For unique conditions, it may be necessary to use the AISI Specification for the Design of Cold-Formed Steel Structural Members.
      Guide to Fire & Acoustic Data For Steel Floor, Wall & Roof Assemblies.
    • 53. Thermal Performance Requirements
      Thermal Design Guide for the proper insulation thickness.
    • 54. Fire-Rating Performance Requirements
      Fire rated steel assembly details can be found in the UL's Fire Resistance Directory, the Gypsum Association's Fire Resistance Design Manual or other publications.
    • 55. Acoustical Performance Requirements
      The Three U.S. major codes, ICBO’s Uniform Building Code (UBC), BOCA’s National Building Code (NBC), SBCCI’s Standard Building Code (SBC), and CABO outline the minimum requirements for sound transmission control.
      USG fire-rated partition systems offer a range of assemblies that are highly effective in isolating all types of sound.
      In steel-framed construction, USG systems provide economical sound isolating systems without the excessive weight or space required of masonry construction. Systems are designed to control not only the mid and high frequencies, but also the low frequencies prevalent in music and mechanical equipment environments Partitions include both load –bearing and non-load bearing designs.
    • 56. Design Criteria
      Wind Resistance 0.85 kN/m2 Basic, 209 km/hr Speed
      Snow Loading 1.55 kN/m2 Basic snow load
      Earthquake Resistance:8 Degrees Basic earthquake speed 0.4 g
      Exterior Wall Shock Resistance:250 kg Concentrate shock
      Fire Proof 1 to 4 hr by different designs
    • 57. Partitions
    • 58. Resources
    • 59. Lightweight Solution - The Schedule: Rough
    • 60. Weight Comparison – Lightweight Solution vs. Traditional Concrete Construction - Roof
      Our Solution weighs about
      one tenth
      of the traditional concrete construction
      Our Solution weighs about
      one tenth
      of the traditional concrete construction
    • 61. Organizations
      Among the many organizations that develop standards the following is a list:
      • American National Standards Institute (ANSI)
      • 62. The most widely recognized organization for development of consensus standards.
      • 63. American Iron and Steel Institute (AISI)
      • 64. American Institute of Steel Construction (AISC)
      • 65. American Welding Society (AWS)
      • 66. ASTM International (ASTM)
      • 67. Association of the Wall and Ceiling Industry (AWCI)
      • 68. Factory Mutual (FM Global)
      • 69. Gypsum Association (GA)
      • 70. American Institute of Architects (AIA)
      • 71. Construction Specifications Institute (CSI)
      • 72. Steel Framing Alliance (SFA)
      • 73. Cold-Formed Steel Engineers Institute (CFSEI)
      • 74. Steel Stud Manufacturers Association (SSMA)
      • 75. Council of American Structural Engineers (CASE)
      • 76. National Council of Structural Engineers Association (NCSEA)
      • 77. Wei-Wen Yu Center for Cold-Formed Steel Structures (CCFSS)
      • 78. NASPEC was developed by American Iron and Steel Institute (AISI). For further information click on
    • 79. Designing with CFS Framing
      there are a few "design tips" that may be valuable to the first-timer or novice user:
      • A team approach involving the contractor-builder-manufacturer-designer-owner is encouraged.
      • 80. Understanding appropriate steel framing methods and practices.
      • 81. Follow applicable Occupational Safety and Health Administration (OSHA) guidelines and safety requirements.
      • 82. All structural members shall be aligned vertically (in-line framing) to transfer all loads to the foundation, unless horizontal load distribution members are specified.
      • 83. When connecting steel to steel members, drilling tools should drive screws at low speeds of 2500 rpm to prevent improper installation.
      • 84. Keep plumbing in the slab and route through floor and interior wall cavities to the greatest extent possible.
      • 85. Avoid locating plumbing in exterior walls because of potential interruption of structural members and a reduction of the thermal value of the wall.
      • 86. Don't forget web stiffeners for bearing points of floor joists. These are essential components. Stiffeners can be installed on either side of the joist's web.
      • 87. Snap-in plastic insulators, grommets, conduits, or other approved wire protection methods should always be used to protect the plastic sheathing on electrical cables and wires when passing through holes in CFS members.
      • 88. Ensure that copper pipes are always separated from the steel framing by using plastic insulators or other approved methods.
      • 89. All load-bearing studs shall be seated in the tracks with a maximum gap of 1/8 inch between the end of the stud and the web of the track.
      • 90. Finally, there is no substitute for doing your own homework—explore the resources mentioned in this article and become informed in the various attributes of CFS systems.
    • 91. Light Gauge Metal Framing –Examples
      • (Alcyone Apartments — Seattle, Washington )
      • Affordable units developed by Paul Allen’s Vulcan Group• Excellent example of “blended” materials in a mixed use project• First 3 floors of concrete for retail space and parking• Top 5 floors structural light gauge panels, floors, and trusses• Significant building weight reduction by incorporating light gauge• First LEED Certified residential building   in Seattle’s Cascade Neighborhood
      (Nursing Home of Eunice — Eunice, Louisiana)
      • 70,000 square foot assisted living• Light gauge framing specified for non-combustibility • Normally, contractor would have “stick framed” with studs• LGST fabricator designed and produced more than 1,500 trusses• By utilizing pre-fabricated trusses, contractor estimated he saved 24 man-months versus conventional framing
    • 92. Practical Uses For Cold Formed Steel
      Sheathed Floor Systems
      Concrete Floor Systems
      Roof Systems
      Exterior Wall Systems
    • 93. Office Buildings
    • 94. Office Buildings
    • 95. Apartment Buildings
    • 96. Apartment Buildings
    • 97. Warehouses/Industrial
    • 98. Accomodations
      Mobile Accomodations
    • 99. 48
    • 100. Light Gauge Metal Framing – Installation On Job Site
    • 101. Affordable Housing
    • 102. Affordable Housing
    • 103. Before & After
    • 104. Accomodates all Exterior Cladding
      Concrete Block
      The Solution:
      Light Gauge Metal Framing
      All Exterior Cladding are applicable .
      Gypsum Wall Board (Interior Walls)
      Roof Shingles
    • 105. 2” Lightweight Concrete
      18 guage Lath
      Cold-formed Studs
      Gypsum Board
    • 106. E.I.F.S. – Light Gauge Metal Walls Assembly
      There are several reasons for the continued growth of the EIFS market:
      They are lightweight and hence impose few structural restrictions on their use;
      2. Range of Colors:
      The polymer-based finishes allow for a vast range of colors and textures;
      3. Design Flexibility:
      The foam plastic insulation used by most systems can be easily shaped to form cornices, reveals, trim, etc.;
      4. Energy Efficient and economy:
      The insulation improves energy-efficiency by wrapping the whole building in an uninterrupted blanket.
    • 107. E.I.F.S. - R-Value
    • 108. E.I.F.S. – moisture and thermal performance
      An Oak Ridge National Laboratory study shows that a newly redesigned generation of Exterior Insulation and Finish Systems, or EIFS, walls perform better than several other wall types tested for moisture and thermal performance. EIFS walls use foam insulation, fiberglass mesh and performance-engineered coatings as an alternative to various other cladding systems. ORNL researchers teamed with construction industry EIFS partners to develop "water management systems" that greatly improve durability, moisture management and thermal performance of the EIFS walls. The 15-month ORNL study conducted in the Southeast showed EIFS outperformed walls made of brick, stucco, concrete block and cement board in moisture protection and temperature control. The data are being used to benchmark a computer simulation, called a hygrothermal model, to predict wall thermal and moisture performance. The work is funded by the Department of Energy's Office of Energy Efficiency and Renewable Energy and the non-profit EIMA Industry Members Association. [Contact: Mike Bradley; 865.576.9553;]
    • 109. Roofing Types
      All types of roofs are applicable
    • 110. 59
    • 111. The ProcessA superior end-to-end process
      Architects Renditions: The process begins with an architect’s design that can then be transferred to framing, detailing and engineering software.
      Engineering: The entire frame is then designed and detailed using framing software. The completed file, then ready for manufacturing, is sent electronically to the Steel Framing equipment.
      Production: The Steel Framing equipment then creates each component of the building frame individually, labeling them according to their location in the frame for error free construction.
      Individual Components: Every component is produced and detailed with individual characteristics according to its position in each panel. Cut to length, service and fastening holes pre-punched, swaged, notched and ready for assembly.
      Assembly: The assembly process usually takes place at the manufacturing plant as each finished component is produced by the Steel Frame Roll former. They are assembled and screwed together to form the panels and trusses.
      Transport: The completed panels and trusses are then transported to the construction site.
      Construction: Once at the construction site, the panels and trusses are unloaded and positioned for rapid and accurate assembly.
      Finished Product: Once the frame is completed, the rest of the structure is built.
      Combining the processes of designing, quoting, production planning, factory management, machine control, and material management.
      By integrating the above processes results in:
      • Increased efficiency.
      • 112. Reduction of material waste.
      • 113. Management control of the business
    • 114. The Process–From Factory to Installation
      275 m2 per shift per crew
    • 115. The Process–From Factory to Installation
    • 116. The Process- From Factory to Installation
    • 117. 64
    • 118. Light Gauge Metal Framing –Installation On Job Site
      275 m2 per week per crew
    • 119. Light Gauge Metal Framing–From Factory to Installation
      Even complex framing jobs can be prefabricated and delivered to the job site
    • 120. 67
    • 121. 68
    • 122. 69
    • 123. 70
    • 124. 71
    • 125. 72
    • 126. 73
    • 127. 74
    • 128. 75
    • 129. 76
    • 130. Our Design Resources
      Our Company has a full suite of technical tools and information that our engineers need to produce efficient and effective designs :
      a full suite of technical tools and information that every engineer needs to produce efficient and effective designs
      Our design professionals are speeding engineering time and increasing the efficiency of designs by using design software developed specifically for cold-formed steel.
      We have built our library with industry standard details covering typical cold-formed steel connections in Floors, Load Bearing Walls, Non-Load Bearing Walls, Roofs, and General Conditions. All details are in AutoCAD, WMF and DXF Formats.
      Our design professionals have access to an extensive and broad range of technical and design information.
    • 131. Conclusion
      Any structure you build here can be built wih this system.
      It is faster, better, and more affordable.
      We have worked for the largest U.S Developers.
      We have worked for the top JD Power rated US Developers.
      We provide a LEED™ certified product.
      With our experience, we will be part of your solution.
    • 132. Thank You
      125 South Wacker Drive, Suite 300, Chicago, Illinois 60606, U.S.A.
      Phone: (312) 253-7401 Fax: (312) 253-7402