Gym Shed

Drawings

Measurements are in millimetres. Numbers in circles match the notes under each drawing. On a phone, tap "Open full size" and pinch to zoom.

A01Siting and set-out Open full size
A01 Siting and set-outSchematic plan: the slab 3,260 by 2,960 set at least 1,100 from the side and back boundaries, profiles and string lines one metre outside the corners, equal diagonals of 4,403, the apron in front of the doors and the house beyond, with room to walk between.BOUNDARYBOUNDARYDIAGONALSEQUAL: 4,403≥ 1,100≥ 1,100APRON + PERGOLALATER, SEPARATE POURTANKHOUSENo set gap needed: the block isn't bushfire-prone123
  1. Slab 3,260 × 2,960. Inside face of the formwork on the string lines.
  2. Profiles about 1 m outside each corner (or as room allows). Strings mark the slab edge. Diagonals must match at 4,403.
  3. Doors on the front edge. Face them north to north-east if you can: winter sun in, no hot western glare.
A02Floor plan and fit-out Open full size
A02 Floor plan and fit-outPlan of the inside: power rack centred on the back wall, the bar 428 clear of each side wall, a deadlift zone in front, dumbbells and plates in the back corners, a pair of outward-opening doors centred on the front wall and a window in each side wall.POWER RACK1,200 × 1,200428428DEADLIFT / OPEN FLOORDBsPLATESBENCH3,300 OUTSIDE3,000DOORS 1,740WINDOW1,230DOORS OPEN OUTAPRON SLAB HERE (LATER)INSIDE 3,056 × 2,756

Gear shown dashed. Doors open outward to keep the floor clear. The bar has 428 to each side wall, enough to load plates.

A03Section through the building Open full size
A03 Section through the buildingCross-section looking at a side wall: slab with edge beams, back wall 2,650 high, front wall 2,500, rafters falling 3 degrees to the front, battens, Trimdek roof, ceiling and insulation. Top of the high-side capping is 2,975 above natural ground, inside clear height 2,640 at the back and 2,496 at the front.RACKCHIN-UP BAR 2,2001002,6502,975TOP OF CAPPING 2,975 ABOVE NATURAL GROUND. LIMIT 3,000.2,640 CLEAR2,496 CLEARDOOR 2,1752,960 FRAME400FALL 3.0°12345678910
  1. Trimdek 0.42 Colorbond on a foil roof blanket, screwed to the battens.
  2. Battens 70 × 35 H3, laid flat, about 822 apart.
  3. Rafters 140 × 45 MGP10 at 600 centres.
  4. R2.5 batts above a 9 mm ply ceiling fixed to the rafters.
  5. Fascia 140 × 45 H3 with 115 quad gutter.
  6. 12 mm structural ply lining with R2.0 wall batts behind.
  7. Slab 100 thick, SL82 mesh 30 below the surface.
  8. Edge beam 300 wide × 400 deep with 3-L11TM trench mesh.
  9. 20 mm Class 3 crushed rock, 100 compacted, under 200 µm film.
  10. Natural ground. FFL is 100 above it.
S01Slab plan Open full size
S01 Slab planSlab 3,260 by 2,960 with 300 wide edge beams, two pieces of SL82 mesh lapped 225, trench mesh around the beams, 16 anchor positions on the wall lines, the door opening and the power conduit.DIAGONALS 4,403P3,2602,960DOOR 1,740LAP 2251234567
  1. Edge beam, 300 wide around the perimeter (dashed line is its inside edge).
  2. Mesh piece A: SL82, 2,880 × 2,400.
  3. Mesh piece B: SL82, 2,880 × 1,005, lapped 225 over A. Both come from one 6.0 × 2.4 m sheet.
  4. Trench mesh 3-L11TM on 50 mm chairs, lapped 500 at the corners.
  5. Anchor screws, M12 × 125, through the bottom plates: 16 in all. Positions are in the table below.
  6. Power conduit, suggested spot under the right-hand window. Agree it with your electrician before the pour.
  7. Door opening. The bottom plate runs through here until the frame is anchored, then gets cut out.
Anchor positions
WallPositionsMeasured
Back wall200, 1,100, 2,100, 3,074from the left end
Front wall250, 610, 2,650, 3,010from the left end, either side of the doorway
Each side wall290, 1,286, 2,090, 2,792from the back face of the building

Each anchor sits on the wall's centre line, 45 in from the slab edge, between studs.

S02Slab edge detail Open full size
S02 Slab edge detailSection through the slab edge: crushed rock base, 200 micron film, trench mesh in a 300 by 400 edge beam, SL82 mesh near the top of a 100 mm slab, formwork board and peg, the bottom plate on DPC with an anchor screw, and the cladding lapping 25 below the slab top.4001003001234567891011
  1. Colorbond Custom Orb cladding over wall wrap.
  2. Cladding laps 25 below the slab top so rain drips clear.
  3. Formwork 150 × 38 on edge, pegs at 900. Top of the board is the slab top.
  4. Stud 90 × 45 MGP10 H2.
  5. 12 mm ply lining, kept 20 off the slab.
  6. Bottom plate 90 × 45 H3 on a DPC strip.
  7. M12 × 125 anchor screw, about 80 into the concrete.
  8. SL82 mesh on 50 chairs, 30 below the surface.
  9. 200 µm film under everything, laps 200 and taped.
  10. 20 mm Class 3 crushed rock, compacted in two layers.
  11. 3-L11TM trench mesh on 50 chairs, 50 off the bottom.
F01Back wall frame (high side) Open full size
F01 Back wall frameBack wall frame 3,260 long and 2,650 high: three-stud corners, studs at 600 centres from the left end, two rows of noggings, double top plate and an X strap brace.06001,2001,8002,4003,000123456STUDS 2,5153,2602,6502,650
  1. Bottom plate 90 × 45 H3, on DPC, anchored per S01.
  2. Double top plate, 90 × 45, full length.
  3. Three-stud corners, so the lining has something to fix to.
  4. Studs at 600 centres measured from the left-hand end.
  5. Noggings at 1,200 and 2,400 (centres). The 2,400 row catches the lining joint.
  6. X strap brace on the outside face, tensioned, nailed to every stud it crosses.
F02Front wall frame (low side) Open full size
F02 Front wall frameFront wall frame 3,260 long and 2,500 high with a 1,740 wide door opening centred, jamb and jack studs, a 2/190 by 45 lintel tight under the top plate and a head trimmer giving a 2,175 high opening.RO 1,740 × 2,17507602,5002,17512345678STUDS 2,365JACKS 2,1753,2602,5002,500
  1. Bottom plate 90 × 45 H3. Leave it running through the doorway until the frame is anchored, then cut it out.
  2. Double top plate, 90 × 45, full length.
  3. Three-stud corners.
  4. Door jamb studs, full height.
  5. Jack studs carry the lintel.
  6. Lintel: two 190 × 45 nailed together, tight under the top plate.
  7. Head trimmer laid flat under the lintel. Change its height to suit your door frame.
  8. Nogging at 1,200. Above 2,400 the top plate catches the lining.
F03Side wall frames (build two) Open full size
F03 Side wall frameSide wall frame 2,780 long, raked from 2,650 at the back to 2,505 at the front, studs at 600 centres from the back of the building, a 1,230 by 620 window opening 1,350 from the back end with lintel, sill trimmer and cripples.RO 1,230 × 62005101,1101,7102,3101,3501,230 ROSILL 1,480HEAD 2,100BACK (HIGH) ENDFRONT (LOW) END123456789102,7802,6502,505
  1. Bottom plate 90 × 45 H3, on DPC.
  2. Double raked top plate, 90 × 45, cut 3° at both ends. Its slope matches the rafters.
  3. End studs. Long points: 2,515 at the back, 2,372 at the front.
  4. Studs at 600 centres measured from the back face of the building (so they line up with the ply joints).
  5. Window jamb studs, full height.
  6. Jack studs, 2,055.
  7. Window lintel: two 140 × 45 nailed together, 1,320 long.
  8. Sill trimmer, laid flat.
  9. Cripples under the sill and over the lintel.
  10. Noggings at 1,200 and 2,400 (2,400 only where there's room under the top plate).
R01Roof framing plan Open full size
R01 Roof framing planPlan of the roof frame: seven 140 by 45 rafters at 600 centres from the left end plus one flush at each end, five battens 822 apart running 75 past each side, blocking over the back and front walls, the fascia and quad gutter on the low side, and the wall frames dashed below.FALL 3.0°06001,2001,8002,4003,0003,2602,9604003,3607582212345678
  1. Rafters 140 × 45 MGP10 H2, 3,365 long, plumb cut both ends. Flush with the back of the frame, 400 past the front.
  2. End rafters sit flush with the outside of each side wall.
  3. Battens 70 × 35 H3, laid flat, 3,410 long, 75 past each side wall.
  4. Blocking, 140 × 45, between the rafters over the back and front walls.
  5. Fascia 140 × 45 H3 across the rafter ends.
  6. 115 quad gutter, outlet and downpipe at the right-hand end, to a tank or the garden.
  7. Ceiling joint noggings, laid flat, 2,400 in from the back wall's inside face.
  8. Wall frames below, shown dashed.