1. Preliminary Design Review Group Members Position Brittany Borella Solar Thermal Nicole Varble Hydronic System Eric Walkama Foundations Jay WheatonStructural/Building Thermal Ted ZachwiejaArchitectural/Building Thermal Group #16 Austin, Texas

2. Agenda Black band lives here! 1.Introduction 2.Architectural Floor plan a.House Elevation Drawings b.Floor Plan Drawings 3.Foundation Design a.Preliminary Analysis b.Block vs. Poured 4.Roof Truss Design a.Truss Shapes b.FPC positions c.Material Selection d.Preliminary analysis 5.Hydronic System a.Design Inputs b.Head Loss c.Pump Choices 6.Solar Thermal System a.Life cycle cost vs. Solar Fraction Analysis b.Flat Plate Collector Choices 7.Building Thermal System a.Wall, Roof, and Ceiling Thermal resistivity's b.Material Properties

3. Location: Austin, Texas  Climate  Temperate-to-hot green oasis  Highly variable – characteristics of dessert, tropics, and wetter climate  Winters  Mild and dry  Average 88 days below 45F (7C)  Average 24 days below freezing

4. Architectural Exterior Layout

5. Architectural

6. Architectural Basement

7. Architectural Floor 1

8. Architectural Floor 2

9. Fsoil Rf Rc h h/3 Figure: FBD of soil pressure on basement wall Figure: Bending Moment Diagram M(y) M max VariableValue ρ, density (dry).0637 lb/in^2 w, length wall44 ft h, height8-10 ft t, thickness6-10in I9504-44000 in^4 Fsoil155000-242161 lb Rc51666 – 80720 lb Rf103333 -161440 lb M max3306624 –6457600 lb-in σ (dry) 1043-2083 psi Foundation Foundation System

10. PouredBlock Pro Faster Installation Stronger Walls More Waterproof More flexible in design Properly filled walls can give good insulation Wire and rebar can be placed in between and in blocks to give tensile strength Can be installed by homeowner Con Cannot be done by homeowner Longer installation More prone to leaks Less flexible in design Approx. Installation Cost $5000 +$0(for self installation) or several thousand for labor Foundation Foundation Poured vs. Concrete Block Foundation

11. Weight of House Floor Reaction Figure: FBD of Compressive Loading on Foundation VariableValue w, width wall25 ft L, length wall44 ft t, wall thickness6-10 in A, wall area9792 – 16160 in^2 House Dead Weight>60 psf Dynamic Loading>100 psf Approx. Total Weight300 tonnes Foundation Foundation Compressive Loading

12. MaterialCompressive StrengthCost Portland Cement8400 psi$75/yd^3 Concrete Block8400 psi$1.60/block Rebar MaterialTensile Strength Grade 40>40,000 psi Grade 60>60,000 psi Grade 75>75,000 psi footing Figure: Sample Cross Section of Foundation wall (Cement only has a tensile strength of 132 psi so rebar is needed to resist soil load) Ceiling height, h grade 6 in rebar Rebar spacing is 12”-24” for horizontal and vertical (1/2” diameter) Foundation Foundation Materials

13. InsulationDrainage Interior WallDamp Proofing Exterior WallWaterproofing spray or layer Middle Wall (insulating concrete form) Piping System (trench drain, use slope) ASTM C 578 polystyrene foam Other support in basement to hold concentrated loadings in house and to take some loadings off of walls Soil compaction/preparation Foundation Foundation Other Foundation Considerations

14. Structural Truss Design

15. Structural FPC Position 18.4° 30°

16. Structural Dimensions

17. Structural Materials Owens Corning Pacific Wave Duration Premium AR Designer Series Shingle Owens Corning Sand Dune Duration Premium AR Designer Series Shingle

18. Structural Materials MaterialCostDensityVendorDescription 2"x4"x10'$3.64/ea. 18.33 lbf/52.5 cubic ft. Home Depot Kiln Dried Dimensional Lumber Shingles28.70/Bundle225lbf / 100 sq. ft.Lowes Owens Corning Duration Premium-Limited Lifetime Waranty Sheathing$14.47/32 sq. ft.68lbf / 32 sq. ft. Home Depot Trubord 19/32" OSB Sheathing Connector Plate $0.50/ea. 0.1 lb/plate Home Depot 5”x 1.8” TP-15R Tie Plate Underlayment$120/1000 sq. ft.28lbf/1000 sq. ft.LowesGrace TRI-FLEX underlayment

19. Structural Weight Analysis MaterialDensityAmount in RoofWeight (lbf) Lumber18.33 lbf/.365 cubic ft. 34*3.11 cubic ft5310.18 Shingles225lbf / 100 sq. ft. 1406.2 sq. ft.3164.0 Underlayment28lbf / 1000 sq. ft.2812.32 sq. ft.78.8 Sheathing68lbf / 32 sq. ft.1406.2 sq. ft.2988.2 FPC’s7 lbf / sq. ft.4*30 sq. ft.840.0 Misc.0.3 lbf / sq. ft.1406.2 sq. ft.421.9 Total-- 12,803.1 Total per FPC Side (1)-- 9.7 lbf/ft^2 Total per non-FPC Side (2)-- 8.5 lbf/ft^2

20. Structural Truss Stress Analysis Assumptions: 1.External Forces and Reactions act on the joints only 2.Members are in tension or compression 3.Joint “E” is on rollers 4.There are no moments at the joints because they are considered pins 5.Forces act in the plane, therefore 2-D 6.Weight is distributed evenly along roof

21. Structural Truss Stress Analysis L X R Ay R Ey x y d1d1 d2d2 A

22. Structural Truss Stress Analysis Plugging in values: R Ay = 194.4 lbf R Ey = 176.5 lbf

23. Hydronic System Design Inputs Structural [ft] Height of Basement9 Height of 1st floor9 Height of 2nd floor9 Width of Roof15 Roof Height8 FPC # of FPC3 Flow Rate [gpm]3.97 ∆P [in H2O]175.6 Cumulative Head [ft] 0.014 45.753 73.240 73.420 96.056 96.485 88.651 62.084 63.084 63.207 64.221

24. Hydronic System Head Loss Head Loss Factors Pipe Diameter Pipe Length Number of Elbows Elevation Changes Valves Flat Plate Collectors pump FPC HX Elevation Change Elbow Valve

25. Hydronic System Pump Choices Part #HeadDiameter@ 50 ft@ 100 ft@ 150 ftCost ftingpm 8134k2412911910-$814.50 8134k282641-1915$931.03 *not self priming, rated for continuous use, temp range from 5-194F, use to transfer liquid to considerable heights Part #HeadDiameter@ 40 ft@ 80 ftCost ftingpm 4011k111032 -> 1.55031$340.85 4011k221152 -> 1.56344$370.52 *used typically in sprinkler systems, used to overcome high head loss, self-prime up to 25 ft

26. Hydronic System Pump Choices continued * multi stage impeller, typically used for coolant delivery, mounted vertically * to use in parallel with several of the same pump, compact, ideal for heating applications Part #HeadDiameter@ 0 ft@ 100 ftCost ftingpm 99825k5115013825$838.37 Part #HeadDiameter@ 5 ft@ 20 ftCost ftingpm 67705k4330.52917$8.28/pari

27. Solar Thermal System As an Alternative to Natural GasAs an Alternative to Fuel Oil

28. Solar Thermal System As an Alternative to Electricity Maximization of Life Cycle Savings vs. the Solar Fraction occurs at around 4 panels in each chart

29. Solar Thermal System Leftover heat after the heat exchange with the domestic water can be used for radiant heat. Does not make sense to install a separate space heat system. Only below 60°F 3 months a year

30. Solar Thermal System Panel Options Sol 25 Plus by Stiebel Eltron

31. Solar Thermal System Panel Options Caleffi SKN 4.0 NAS10406 Flat Plate Solar Collector Other Standard Features : Fibreglass framework Low iron tempered glass. Copper header tube. Copper fintube absorber. R-10 poly-isocyanurate foam board. Rapid connection system. Flat and sloped roofs or freestanding. Vertical or horizontal installation. Compatible with any DHW heating system. Connect up to 12 collectors in series. Commercial or residential systems. 74.3% Optical efficiency. 4.036 Heat Loss coefficient.

32. Building Thermal Envelope Walls C ellulose Insulation: Pros mixed with chemicals to reduce its flammability (can create a 2 hour Firewall) Blown cellulose averages same R-Value as Fiberglass but can be 2-3 inches thinner mold easier around studs better against air infiltration Cons 72 hours to a year to dry completely installation requires special equipment mixed with chemicals  insulation can corrode metal

33. Building Thermal Envelop Walls Fiberglass Insulation: Pros ages well extremely difficult to ignite Doesn't require special equipment for installation Cons once ignited can release toxic fumes and burns very hot installation requires protective equipment

34. Building Thermal Envelop Walls MaterialR-Value between StudsR-Value at Studs Inside Film Coeffcient0.68 Gypsum Board0.08 Insulation19.000.00 Studs0.000.77 Plywood1.08 Vinyl Siding0.62 Outside film Coefficient0.17-0.25 CelluloseR19About $0.60 per ft^2 FiberglassR19About $0.48 per ft^2

35. Building Thermal Envelop Roof/Outside Component R-Value (hft 2 °F/Btu) Between TrussAt Truss Outside Film (15mph)0.17-0.25 Asphalt Shingles0.44 2 layers of Felt0.002 19/32" OSB Sheathing0.77 2x4 Pine Stud--0.36 Cellulose Insulation1.01 -- Fiberglass-Batt. insulation0.97 -- Inside Film (45° Slope, Heat Downward)0.76 Total R (cellulose)3.15-3.232.50-2.58 Total U (cellulose)0.32-0.310.40-0.39 Total R (fiberglass)3.11-3.192.50-2.58 Total U (fiberglass)0.32-0.310.40-0.39

36. Building Thermal Envelop Ceiling/Attic Component R-Value (hft 2 °F/Btu) Between TrussAt Truss Interior Film (horizontal, still, heat upward)0.61 Gypsum Board (1/2”)0.04 2x6 Pine Stud --0.56 Cellulose Insulation1.58 -- Fiberglass-Batt. Insulation1.53 -- Attic Film (horizontal, still, heat downward)0.92 Total R (cellulose)3.152.13 Total U (cellulose)0.320.47 Total R (fiberglass)3.102.13 Total U (fiberglass)0.320.47

37. References 2009 ASHRAE Handbook - Fundamentals (I-P Edition) Ch. 26 2009 International Building Code Lowes.com Homedepot.com http://www.maplevalleytruss.com/config.htm