Building My Workshop

Building my custom 20'x22' workshop

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Site Prep

Before the actual construction could begin, trees and stumps had to be removed along with the backside of the pool fence. Next, string lines were setup to show where the outer edge of the subfloor would be. Then markings were made to identify where holes needed to be dug for the spread footings.


Figure 1. Tree and stump clearing


Figure 2. Tree and stump clearing


Figure 3. Tree and stump clearing


Figure 4. Privacy fence removal


Figure 5. Privacy fence removal


Figure 6. Privacy fence removal

Construction

Almost all of my building materials were purchased from MarJam Supply and the metal roofing was purchased from a roofing supply company. The first step was to dig 2 foot square spread footings to support the 6x6 posts that will support the floor joists. After the spread footings were inspected, the footings were poured and a bolt was placed in the center of the footing to attach a plate to the footing. The posts were then set and attached to the plates that were bolted to the footings. The floor joists were then built and inspected. After the inspection, the subfloor (4x8x3/4 plywood) was then built. The walls were then built on the subfloor and then lifted into place. After the walls were built, OSB sheathing was placed on the exterior walls and wrapped. Next, the trusses were built and raised into place. 2x4 purlins were then placed to support the metal roof. The doors and windows were installed and then the vinyl siding was attached. Wire screen was attached in the sofit to prevent birds and insects for getting into the workshop. The final two steps were to build a privacy fence up to the workshop to protect the pool and to build a retaining wall and backfill up to the floor joist on the garage door side.


Figure 7. Spread footings and batter boards


Figure 8. Spread footings and batter boards


Figure 9. Spread footings and batter boards


Figure 10. Spread footings


Figure 11. Spread footing with wire mesh


Figure 12. Spread footings and batter boards


Figure 13. Spread footings and batter boards


Figure 14. Poured spread footing with anchor bolt


Figure 15. Setting 6x6 posts and outer support beams


Figure 16. Setting 6x6 posts and outer support beams


Figure 17. Setting 6x6 posts


Figure 18. Floor joist support set on 6x6 posts


Figure 19. 6x6 posts


Figure 20. 6x6 posts


Figure 21. 6x6 posts bracket attached to a spread footing


Figure 22. 6x6 posts bracket attached to a spread footing


Figure 23. Floor joist support set on 6x6 posts


Figure 24. Floor joists being set


Figure 25. Floor joists being set


Figure 26. Floor joists being set


Figure 27. Laying the plywood flooring


Figure 28. Laying the plywood flooring


Figure 29. Plywood floor is complete


Figure 30. Setting walls


Figure 31. Cutting/materials area


Figure 32. Setting walls


Figure 33. Setting walls


Figure 34. Building walls before lifting them into place


Figure 35. Setting walls


Figure 36. Setting walls


Figure 37. Setting the garage door header


Figure 38. Hanging OSB sheathing


Figure 39. Hanging OSB sheathing


Figure 40. Hanging OSB sheathing and hanging house wrap


Figure 41. Hanging house wrap


Figure 42. Truss spacing with 2x4 purlins


Figure 43. Trusses with 2x4 purlins


Figure 44. Metal roof installed


Figure 45. Metal roof installed


Figure 46. Installing the metal roof on the backside of the workshop


Figure 47. Metal roof is complete


Figure 48. Installing windows and fascia board


Figure 49. Installing the entry doors and garage door


Figure 50. Installing the garage door


Figure 51. Rafter area


Figure 52. Facia, entry door, and garage door complete


Figure 53. Facia, entry door, and garage door complete


Figure 54. Installing vinyl siding


Figure 55. Installing vinyl siding


Figure 56. Installing vinyl siding


Figure 57. Installing vinyl siding


Figure 58. Installing vinyl siding


Figure 59. Installing vinyl siding


Figure 60. Vinyl siding is complete


Figure 61. Building the privacy fence and adding rock


Figure 62. Building the retaining wall


Figure 63. Building the retaining wall


Figure 64. Building the retaining wall


Figure 65. Building the retaining wall


Figure 66. Backfilling


Figure 67. Trench for drain pipe


Figure 68. Retaining wall with backfill


Figure 69. Retaining wall with backfill

Electrical

The electrical was ran from a 100-amp double-pole breaker in my main panel to a 125-amp sub panel in the workshop. I used direct burial wire (4-4-4 Vassar Aluminum Triplex URD Direct Burial Cable) that was placed in a 3' trench. The wire was #4 and 3-conductor (2 hots and a netual) that is rated for 123-amps. Both end points are connected to a 100-amp double-pole breaker. The 123-amp rating is plenty to compensate for the voltage drop of my 100' run (panel to panel). I'm only going to power a few LED lights and a few wall outlets so 100-amp breakers were plenty. I was planning to go with 80-amp breakers but the 100-amp breakers were cheaper. I then ran three legs (leg #1 - for three electrical outlets, leg #2 - for two outlets to power the LED lights, and leg #3 - a single electrical outlet). Conduit was used to bring the wire from the 3' trench, through the subfloor and seal plate, to the bottom of the sub panel with the three legs exiting the top of the panel. I was able to do all this myself and hire a DIY-friendly electrician to pull my permit and inspect my work before having the city inspect it.


Created by Robert Keith · © 2024