Updated Workshop Design Plan

Synopsis: Shed workshop built to exceed quality standards for residential housing, especially wrt energy efficiency, durability, and low maintenance.  Exterior size: 14'10" by 12'6" with 9 foot walls.   Best available materials and construction techniques.

0.  Already done: Concrete Slab: engineered and inspected with #6 and #3 rebar grid and wire mesh and 27 inch beams, 4000psi concrete, wet cured 1 month.

    a) Needs removal of forms, cleanup of scrap concrete, removal of unused rebar.

1.  Exterior dimensions 14'10" length, 12'6" width and 9' height or higher exterior walls.

2.  4x8 Hardiepanel vertical line siding (not plank!) painted to match house.  30 pound felt or Typar on 5/8 plywood backing.

3.  Hardietrim, Azek, Miratec, or real cedar wood trim on corners, around window, door, and A/C.

4.  2x6 framing on 16" centers.  Optional: 2x4 framing on north and east walls (for better acoustic internal dimensions).

5.  6 foot wide coated steel double french doors with internal blinds, Energy Star, facing east (toward house).  Lowes  ReliaBilt #289766 ($698).  Flexible pull screen system in front of door.

6.  One 29x47 Fleetwood Westwood 250 casement window (already obtained).  Facing north at 5 feet (min) from front, 36 inch minimum height.

7.  5/12 slope 2x8 framing for roof support.

8.  Eaves at 18" depth with (suggested) HardieFascia boards with drip edge.

9.  24 gauge galvealume steel roofing with hidden fasteners and white Kynar (PVDA) factory coating.  Class 4 hail resistant.  Strongest and most permanent seam design: Berridge Z-lock 180 degree mechanical double lock or equivalent suggested.

10.  Roofing rests on 5/8" plywood with radiant barrier facing down.  30 pound felt or Grace.

11.  Lowe's Valspar Premium exterior paint (top rated consumer reports), tinted to match house.

12.  6x2 foot concrete ramp poured on compacted soil with 3" gravel base.  Not attached to foundation for minimal effect on foundation integrity.  Some settling and drift is expected and tolerable.

13.  Two pound closed cell foam on all walls and under roof deck to fill maximum depth available with shaving to fit sheetrock.

14.  All 5/8 sheetrock:

    a) 5/8" Fireguard (tm, available at Lowe's) sheetrock on side and back walls.  This relatively expensive sheetrock also has reasonably good acoustical properties.  (optional: double sheetrock.)

    b) 5/8" QuietRock EZ (SeriousMaterials) on ceiling at 9 foot (flat) height and front wall.  I figured 8 pieces leaves plenty of margin for both, available through Building Specialties in San Antonio, quoted $58.38 per piece.

15  Electrical connection and wiring to be done by John Jones Electric if possible.

a.  Center ceiling fan with switch near door, remote control and screw in lights.

b.  Side outlets and light/fan switch by door.  10G copper wire in exposed conduit for all circuits.  Industrial grade switch and GFCI outlets, unbreakable nylon Decora plates.  All wiring in interior exposed insulated conduit to avoid wall and ceiling penetrations and enable future modification.

c. 220V AC connection with building panel and shutoff.

16.  24" deep shelf at back of building, minimum clearance of 6 feet.

17.  Two rows 16" deep shelving on sides past back shelf at 6.5 foot and 7.75 foot height.

18.  Porcelain non-slip freeze resistant tile, (suggested) Marazzi "Brazilian Slate" available at Home Depot.

19. 5800 slide-out BTU Commercial Grade Air Conditioner with digital controls (already obtained) mounted through wall on north side.

20.  Best quality interior white paint.

21.  optional: Marking to show location of studs and electrical wiring.