Table of Contents
- 1Introduction and about the wood sizes
- 2Required wood and alternative sizes
- 3Cutting list and hardware requirements
- 4Footprint Plan
- 5Front and rear wall-frame plans
- 6Front elevation plan
- 7Rear elevation plan
- 8Left-side elevation plan
- 9Right-side elevation plan
- 10Floor plan
- 11A pictorial walk through the building process
- 12Let's begin! Instructions step 1
- 13Instructions steps 2 to 4
- 14Instructions steps 5 to 8
- 15Instructions steps 9 to 11
- 16Instructions steps 12 to 13
- 17Counterbalance for the trapdoor
- 18Guide to adding a slide
Counterbalance for the trapdoor
This will help The part of the plywood wall panels that overlaps the door and window frame, and protrudes into the door or window area and covers any gaps between the door/window and the surrounding frame. It acts as a stop for the door and also stops the rain getting in. the trapdoor accidentally falling shut and reducing the possibility of a mishap such as the trapdoor falling on heads or fingers while kids are climbing up the ladder.
The following is in reference to the drawing on the right.
[a] The trapdoor. There are instructions on how to make the trapdoor in “How to build a Kid’s Play Fort” , however, there will need to be an additional piece of 45mm x 45mm (1 1/2″ x 1 1/2″) Timber, lumber. The hard fibrous lignified substance under the bark of trees added to the underside of the trapdoor to give the rope something strong to tie around.
[b] The pulley. The pulley must be able to swing freely and be big enough to take the rope. The pulley must be positioned directly above the The trim around a window or door. so the weight will hang Plumb, upright.. The pulley must not have any parts that a kid can dismantle or undo with hands.
[c] The A metal rod that has a head on one end and threads on the other and is used to fasten together lumber. The most common bolts used or referred to in projects within this website are coach/carriage bolts and hex bolts.. The bolt goes through the Structural member of a roof that supports the roof load and runs from the ridge to the top of the side walls. above the case and supports the pulley. A number of washers and/or shackle/s may be needed to serve the purpose.
[d] The steel weight. The weight used for this project is a piece of steel 50mm x 50mm x 200mm (2″ x 2″ x 8″) with an eye welded to the top. The weight is about 4 kilo (9lb). Most engineering shops will have a bit of scrap steel lying around that you can generally obtain at a reasonable cost and if you’re willing to pay a bit extra, you should also be able get an eye welded on the top or at very least, a hole drilled through the top. Any shape steel weight will suffice as long as the case is tailor-made to suit the weight.
[e] The rope. The rope must be of a strong and lasting quality. Thread the rope through holes drilled in the trapdoor and around the piece of 45mm x 45mm (1 1/2″ x 1 1/2″) wood underneath, positioned (as shown in the drawings) approximately central lengthwise and about 25mm (1″) in from the edge of the trapdoor on the ladder side. Tie well at both the trapdoor end and the steel weight end and then cover the knots with a Polyvinyl chloride. A common thermoplastic resin, used in a wide variety of manufactured products, including rainwear, pipes, garden hoses, phonograph records, and floor tiles. adhesive tape so kids cannot undo the knots.
[f] The case. The case is the wood structure made to house the weight. When making the case ensure the cavity is larger than the thickness and width of the steel weight. Bolt the case to the wall directly below the pulley.
[g] Top Short lengths of metal strap 25×1 (1/16×1) used to fix members together to resist uplift.. Screw a metal strap (or similar type bracket) across the top opening of the case so that the steel weight cannot be pulled out. Kids will be kids, you know!
[h] Bottom metal strap. Screw a metal strap (or similar type bracket) across the bottom opening of the case so that the steel weight cannot Of roof; Pitch; The incline angle of a roof surface. out should the rope break or knots come undone.