Large-Scale Rustic Construction Honor

Recreational Activities

Requirements

  1. What are the best types of wood and/or bamboo for building large-scale rustic structures? Describe their physical and strength characteristics.

    Answer: Strong, straight round timbers are used, such as eucalyptus (widely used, straight and strong), bamboo (light, strong and flexible, especially giant/Moso bamboo), and durable hardwoods. Desired characteristics: good mechanical strength (to bear weight and tension), straightness, relative lightness, and durability. Bamboo stands out for its excellent strength-to-weight ratio. — Eucalyptus and bamboo are the favorites — straight, strong, and light enough for large pioneering structures.

  2. Know at least three types of preventive wood treatments that can be applied to extend its service life outdoors.

    Answer: Three treatments: (1) immunization/autoclave (impregnating the wood with preservative under pressure); (2) applying protective oils and varnishes/stains (a barrier against water and fungi); (3) protecting the buried parts (light charring/carbonization of the surface or preservative products). All protect against termites, fungi, and moisture. — Immunizing, varnishing, and protecting the buried part makes the wood last much longer outdoors.

  3. Explain why wood and bamboo should be as dry as possible for this type of construction.

    Answer: Because green (damp) wood and bamboo still contain a lot of water; as they dry after being assembled, they SHRINK, crack, warp, and the lashings loosen — compromising the firmness and safety of the structure. In addition, moisture promotes fungi and rotting. Dry wood is lighter, more stable, stronger, and more durable. — Green wood shrinks and cracks as it dries, loosening the lashings — that is why you only build with well-dried wood.

  4. Know the local regulations governing the construction of large-scale rustic structures and the safety standards that must be observed.

    Answer: This is a research task: find out about local regulations and authorizations (event/Conference rules, city hall, fire department) and follow the safety standards: a well-anchored and leveled structure, checked lashings, the area cordoned off from the public, use of PPE, height and load limits, and supervision by experienced people. — Before raising it, learn the regulations and take great care with safety — a poorly built large-scale structure is a danger to life.

  5. Define what a fixed or buried structure is and what a self-supporting (free-standing) structure is, state what percentage of the structure should be buried relative to its height, and what additional safety measures are required for a self-supporting structure.

    Answer: Fixed or buried structure: its bases are driven into the ground, which supports it. Self-supporting (free-standing) structure: it stands on its own weight and bracing, without being buried (using guy lines and counterweights). In general, it is recommended to bury about 1/5 to 1/4 of the post's height (e.g., a 4 m post -> about 0.8 to 1 m buried). The free-standing type requires extra measures: a good base, guy lines/stays, and counterweights to keep it from tipping over. — A buried structure is fixed in the ground (about 1/4 of its height); a free-standing one supports itself, but requires guy lines and counterweights.

  6. Demonstrate how to resolve a force into its components and how useful this knowledge is when designing a large-scale structure.
  7. Demonstrate the ability to use the tools needed to build large-scale rustic structures, such as a machete, hand axe, knife, bow saw, angle grinder, electric and manual planes, chisels, mallets or large hammers, combination wrenches, pipe wrenches, and an electric drill with wood bits of different diameters.
  8. How should you achieve a perfect vertical in a structure at least four meters tall, whether it is buried or not?

    Answer: To ensure verticality (plumb), use a PLUMB BOB (a weighted line) or a level: align the post/structure until it runs parallel to the plumb line (or the bubble is centered), checking from two sides (at 90°). Guy lines/stays tied at opposite points help to hold and adjust the structure to plumb while it is being fixed in place. — The plumb bob (a weighted line) is what ensures a perfect vertical — checking from two sides and securing it with guy lines.

  9. Demonstrate the ability to make a joint and to bind, using lashings, the intersection of two pieces of wood more than 10 cm in diameter at 90° and 45° angles.
  10. Demonstrate how to make joints using hardware such as threaded rods, nails, screws, and wire. Explain why these elements must be used in some cases in large-scale structures.
  11. Know how to draw (by hand or using computer programs) a scale plan with front, top, and side views of a large-scale project, detailing all of its characteristics and including all the dimensions and specifications needed to build it. (This requirement must be met for at least two of the projects requested in requirement 13.)

    Answer: The project is drawn to SCALE (e.g., 1:20 or 1:50), with three views: the front view (from the front), the top view (from above), and the side view (from the side). All the dimensions (real measurements), materials, and specifications are marked. It can be done by hand (with a ruler and square) or with computer programs (CAD). The drawing allows you to calculate the materials and build with precision. — The scale plan with the three views and dimensions is the 'blueprint' of the build — a guide for calculating materials and building correctly.

  12. Choose one of the projects you will build in the next requirement and first create it as a realistic scale model using a scale between 1:20 and 1:50. The model must be made with the greatest possible detail, trying to be as close to reality as possible, including decoration with flags, lighting, and identification signs.
  13. Complete at least three of the following projects. In every case, there must be appropriate decoration with the club's elements, lighting, correct placement of flags and patriotic symbols, and an identification sign/plaque for the club/conference/union:
    • A tower at least 4 meters tall, not counting the height of the masts, with a footprint of at least 2 x 2, for a campout of your club;
    • An entrance gateway for your Pathfinder Club at a Conference or Mission event at least 4.5 meters tall, not counting the height of the masts, with a footprint of at least 2 x 3 meters;
    • A gateway, tower, or watchtower for flag raising at a Conference/Mission event at least 5 meters tall, not counting the height of the masts, and with a footprint of at least 9m²;
    • A gateway, tower, or watchtower for your Conference/Mission at a Union event at least 5.5 meters tall, not counting the height of the masts, and with a footprint of at least 10m²;
    • A large-scale structure for your Union at a Division event at least 6 meters tall, not counting the height of the masts, and at least 12m².