raw · articles · ingested 2026-10-18
Double Play Container — As-Built Design Drawings (David Harrison, 10 sheets)
Source: MANUAL
Ten-sheet drawing set for the Zomeworks 8’ × 20’ “high boy” cargo container Double Play passive heating and cooling system. Originally drawn by David Harrison (DCH) between 2010 and 2012; sheets 3–7 reworked by Harrison in October 2026 to reflect the as-built condition. Received via email from Bruce Davis on 2026-10-18, forwarding Harrison’s 2026-10-16 message. See provenance email.
Binary PDF: 2026-10-18-double-play-container-drawings-harrison.pdf
Sheet Index
| Page | Title | Date | Description |
|---|---|---|---|
| 1 | 8’ × 20’ Container South Elevation and Roof Plan | 02-16-11 | South elevation view showing selective-surface absorber panels; roof plan showing bladder eulage header, overflow drain, access stacks |
| 2 | 20 FT. Cargo Box Wall Section View / Structural Cross Section | 03-15-11 | Wall section showing 4” polyisocyanurate insulation, melamine composite wall panels, wood purlins; cross section showing absorber panels, sprayed polyurethane foam floor |
| 3 | Container Roof Support Rafter and Tube Detail | 10-12-26 | Detail of 3 ea. 1½” square tubes and double 2×12 hem fir rafters; lag screw pattern; 4” Styrofoam insulation |
| 4 | 8’ × 20’ Container Roof Framing and Mounting Plate Location | 10-12-26 | Plan view of 9 double 2×12 rafters at 27” OC; ⅛” × 4” × 2½” steel mounting plates welded to container edges |
| 5 | 8’ × 20’ Container Cross Section View — Plumbing | 10-13-26 | Cross section showing cool water return, warm water supply to bladder, 4½” Styrofoam bladder insulation float, absorber panel drain plugs |
| 6 | Cool Water Return Plumbing Schematic | 10-12-26 | Plan view ceiling schematic with Wirsbo PEX fittings schedule (EL, TEE, ball valves); winter water level drain hose and valve |
| 7 | Warm Water Supply Schematic | 10-12-26 | Plan view ceiling schematic showing 8 urethane water bags; Wirsbo PEX fittings schedule; brass drain cocks |
| 8 | Urethane Cooling Bladder and Float Detail | 08-05-10 | Custom 20-mil urethane bladder 24” × 12’ × 86”; 4½” Styrofoam float; 1” FPT fittings for supply/return and air bleed |
| 9 | Solar Absorber Modification | 02-22-11 | Front and back views of selective-surface absorber panel modification: drill and silver-solder ½” PEX brass hose fittings; ¼” FPT drain fitting |
| 10 | Holly’s Container Watt Box Schematic — 24V 110W Electric Wiring | 11-12-12 | Off-grid PV system: 4× Hoxan 55W modules on Zomeworks tracker, Midnite Solar MNPV6 combiner, Morningstar Prostar 15 charge controller, 2× Morco 105Ah batteries, Exel Tech 600W inverter |
Key Specifications (extracted from annotations)
Structure
- Container: 8’ × 20’ “high boy” cargo container
- Roof system: Double 2×12 #2 Hem Fir rafters nailed together, 9 ea. at 27” OC
- Mounting: ⅛” × 4” × 2½” steel plates welded to container top edges, lagged with 5/16” × 5” plated lag screws
- Insulation: 4” polyisocyanurate wall insulation; sprayed polyurethane foam under floor; 4” Styrofoam roof insulation
- Interior finish: ½” melamine composite wall panels on 1½” × 2” wood purlins
Thermal System
- Solar absorbers: 3 ea. south wall-mounted stainless steel selective-surface hydronic panels, 34” × 93”
- Cooling bladders: 8 ea. custom 20-mil urethane bags, 24” × 12’ × 86” with 4½” Styrofoam insulation floats
- Radiator: 14 ga. painted roof panel
- Plumbing: Wirsbo PEX with ¾” and ½” lines; ball valves for seasonal mode switching
Electrical (off-grid)
- Array: 4× Hoxan 55W PV modules (220W total) on Zomeworks tracker
- Charge controller: Morningstar Prostar 15
- Batteries: 2× Morco 105Ah 12VDC (24V system)
- Inverter: Exel Tech 600W, 24VDC→120VAC
- Combiner: Midnite Solar MNPV6
- Protection: Lightning arrestor LA-302 DC
Extracted Text (full pdftotext output)
The following is the raw text extracted from the PDF drawings via pdftotext -layout. Layout-dependent text; refer to the PDF for spatial relationships and dimensions.
Page 1 — South Elevation and Roof Plan
Cooling bladder high point air bleeder check valve. Eulage water level overflow drain and plug. Roof cooling reservoir access stack. 1-1/2” PVC eulage header system. Roof Plan View. Approx. 10 Ft. 20 Ft. South Elevation View.
TITLE: 8’ x 20’ Container South Elevation and Roof Plan — Double Play Container. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 02-16-11. PAGE: 1 of 10.
Page 2 — Structural Cross Section
14 ga. Painted roof / radiator panel. Bladder air bubble bleeder riser and check valve. 1-1/2” PVC Roof bladder eulage header. Double 2” x 12 hem fir roof rafters nailed together 27” OC. Roof bladder access stack. 5/16” x 5” Plated lag screw 1 ea. into both rafters. Existing container metal ceiling / roof panel. 1-1/2” x 2” wood purlin. ½” melamine composite wall panel screwed to horizontal wall purlin. Selective surface absorber panel (93”). 4” Polyisocyanurate insulation. Sprayed polyurethane foam beneath container floor.
TITLE: 20 FT. Cargo Box Wall Section View. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 03-15-11. PAGE: 2 of 10.
Page 3 — Roof Support Rafter and Tube Detail
3 ea. 1-1½” x .12” Square Tube w/ .406 dia. through hole 18X. Double 2” x 12” #2 Hem Fir Roof Rafter Nailed together 9 ea. 5/16” x 5” Plated Lag Screw and FW (54 ea.). 2” x 12” Perimeter #2 Hem Fir Band Board. 4” Styrofoam Insulation. 3 ea. 1-1½” Sq. Tube 219” L. lagged through the metal container ceiling into the roof rafter system with 5/16” x 5” lag screws.
TITLE: Container Roof Support Rafter and Tube Detail. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 10-12-26. PAGE: 3 of 10.
Page 4 — Roof Framing and Mounting Plate Location
Double 2” x 12” Hem Fir Rafter cut down to 11” nailed together 9X. ⅛” x 4” x 2½” Steel Plate welded to top outside edge of container front and back. 2 ea. 5/16” dia. holes for ¼” lag screws at both ends. 2” x Band Board Around Perimeter. 8’-6” height. 20 Ft. length.
TITLE: 8’ x 20’ Container Roof Framing and Mounting Plate Location. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 10-12-26. PAGE: 4 of 10.
Page 5 — Plumbing Cross Section
Bladder air bubble bleeder riser and check valve. 1-1/2” PVC Roof bladder eulage header system. Roof bladder closure system. 14 ga. Painted roof radiator panel. Maximum system water level overflow. 4-1/2” Styrofoam bladder insulation float. Cool water return line. Warm water supply line to bladder. Cool water drop pipe. Selective surface absorber panel. 4” Polyisocyanurate insulation. Absorber panel drain plug.
TITLE: 8’ x 20’ Container Cross Section View. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 10-13-26. PAGE: 5 of 10.
Page 6 — Cool Water Return Schematic
All cool water south side return lines are embedded behind the finished wall surface and connect to the bottom of the solar absorbers. Winter Roof Water Level Drain Hose. Winter Seasonal Roof Water Level Drain Valve. Wirsbo PEX fittings: EL ½”×½” (12 ea.), TEE ½”×½”×¾” (2 ea.), TEE ¾”×¾”×¾” (12 ea.), EL ¾”×¾” (3 ea.), Adaptor EL ¾” FPT × ¾” (8 ea.), TEE ¾×¾×½ (2 ea.), Ball Valve ¾”×¾” (9 ea.).
TITLE: 8’ x 20’ Cargo Container Cool Water Return Plumbing Schematic. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 10-12-26. PAGE: 6 of 10.
Page 7 — Warm Water Supply Schematic
Urethane Water Bags 8 ea. Wirsbo PEX fittings: EL ½”×½” (12 ea.), TEE ½”×½”×¾” (2 ea.), TEE ¾”×¾”×¾” (8 ea.), EL ¾”×¾” (3 ea.), Adaptor EL ¾” FPT × ¾” (8 ea.), TEE ¾×¾×½ (2 ea.), Ball Valve ¾”×¾” (8 ea.), Brass Drain Cock (2 ea.).
TITLE: 8’ x 20 FT. Cargo Box Warm Water Supply Schematic. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 10-12-26. PAGE: 7 of 10.
Page 8 — Bladder and Float Detail
Custom 20 mil. urethane bladder. 4-1/2” Styrofoam Float. Polyurethane Bag 24” w × 12’ h × 86” long. 1” FPT fittings: Air Bleed, Panel Supply/Return (2 ea.).
TITLE: Urethane Cooling Bladder and Float Detail 8 ea. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 08-05-10. PAGE: 8 of 10.
Page 9 — Solar Absorber Modification
Drill 2 ea. 9/16” dia. holes through the back face of absorber and silver solder ½” pex brass hose fitting over hole. Silver solder ¼” FPT brass fitting over 7/16” dia. hole as close to lower right hand corner as practical. Existing fittings modified to ½” male pex insert adaptor (silver soldered 2×). Cap existing fittings (2×). Panel dimensions: 34” × 93”.
TITLE: 8’ x 20’ Container Solar Absorber Modification. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 02-22-11. PAGE: 9 of 10.
Page 10 — Electrical Wiring Schematic
220 Watt 24 Volt Solar Array on Zomeworks Tracker. 4× Hoxan 55 Watt PV modules. Midnite Solar MNPV6 Combiner Box with breakers (MNEPV10 ×2, MNEPV63 ×1, MNEPV30 ×1, Square D QOU130 30A AC ×1). Morningstar Prostar 15 Charge Controller. 2× Morco Battery 105Ah 12 VDC. Lightning Arrestor LA-302 DC. Exel Tech 600 Watt Inverter 24VDC–120VAC. Battery temp. probe. #4 THHN and #10 THHN wiring.
TITLE: Holly’s Container Watt Box Schematic 24 Volt 110 Watt Electric Wiring Schematic. DRAWN BY: DCH. ZOMEWORKS CORPORATION. DATE: 11-12-12. PAGE: 10 of 10.