Prime Dome Construction
Contents
Length Table
A Yellow 3.958 47.496 B Blue 4.638 55.656 C Red 4.429 53.148 D Black 4.938 59.256 E Green 4.562 54.744 F Orange 4.821 57.852 G Silver 5.013 60.156 H Pink 5.243 62.916 I Brown 5.274 63.288
Side 26.916 29.916 Height 23.30993977 26.30993977
Tools
2 impact drivers, 4 chargers, 6 batteries(previously 2ah but bigger are mote available now) a ratchet, 3 correct size sockets with impact . 2 channel lock style pliers big enough to grab wing nuts.
2x4s with little parts of 2x4s with 45 degree angle to prop up the dome to make it so people don't have to hold it all the time. These can fall and could bonk someone if it is not being held, ensure it does not fall on people.
member construction
Drill bit drill cuttoff wheel, measuring tape, press to squish the member ends flat, flap disk or grinder to deburr.
bolt specifications head size uses x socket
5/8 head. no more than .25in shoulder
Tarp notes
Labor
A small crew is normally dedicated to this task. It normally takes about 2 days.
Roles
- Supervisor -- stands and watches
- Impactor
- Pattern layer this person preps the poles for the next stage and helps make sure the pattern is followed
- Nut holder -- this person holds the wing nut with a pair of pliars
- Lifter, 1 or 2, holds the
It is easier to connect pieces at waste height. so pattern layer will loosly get bolt on a step ahead of the snuggers while there is slack, and then the lifters can align and pull things together at waste height, then weight can also go on the new member right away allowing easier lifting.
We order the members so that when we disconnect things the lower ones can come off first. so when we are putting things up the bolt stack is: the ones going to a higher level are closer to the bolt head, and the horizontal ones are closer to the wing nut. then when the next layer gets added
Slack and play is sometimes nice, we go back around and zap the bolts with the impact.
We add tarps before the thing gets too high.
Safety
This may not be a complete list.
- Ask questions, see something say something.
- We have deburred conduit, but there may still be sharp things.
- Team lift, communication and coordination of the team is important.
- Closed toe shoes recommended
- safety glasses are required.
- rough housing is not allowed.
- hearing protection is required when impacting. Impact drivers are very loud. It is important to have earplugs on strings because they get removed and put back a lot. Communication is easier without
- Do not put yourself under a part of the dome that is propped up.
- Take frequent breaks.
- You may want to wear gloves.
- Drink penty of water.
- Wear sunscreen.
- Have a big brimmed hat.
- snug fitting long sleeve clothes recommended for sun protection
- less flammable (cotton) clothes if using an angle grinder. or cut off
Techniques,
We start at the top and do a layer at a time. We leave the layer finger tight that is being attached to, and impact before it gets too high.
Try not to layout the pattern more than one level ahead.(in a way that confuses the lifters)
As they dome gets heavier, we have to prop up a side of the dome to be able to attach the next layer.
complete Triangles on the base can be used as a support. do not leave a single stick dangling down.
Starting a layer means tipping the dome., prop up desired side about a foot, then extend both sides a foot, then the middle another foot, then the sides another foot then the starting point will be about 3ft up and verify everything is supported.
If the holes do not line up, the dome is warped (or wrong members) do not yank on members when nut is removed.
Management techniques
-- this is all about finesse, make sure the dome is liftend and the change is gradual.
look around and review things. make sure environment is quiet so people can communicate.
Do insist on dewarping the dome and verify by sweeping up the next members tonsee if they line up. if they don't, dewarp the dome until it fits.
3 people --
setter will be going in and out of the dome a lot to help move. the setter puts the vertical members on the bolt, and then the horizontal members. tighten the nut quite a bit to reduce slack. this person is outside the dome.
bolter this person has the impact and will be fastening the members up. Inside the dome
pole passer, this person verifies pattern and makes sure poles go on the screw.
4th person, Utility, can layout pattern for the next layer as long as it does not interfere. Bolt fairy: drops bolt washer washer wing groups at each new vertex. This person can also help get tarps staged and come help hold stuff if there is an exception.
5th, next to last layer needs lifters.
6th/7th, last layer this gets hairy.
Put tarp on before it gets too high.
screw into ground, ratchet straps.
tennis balls to prevent gouges.
Door
You'll remove the brown sphincter for the main entrance, smaller ones on the side open for emergency exits.
Fire extinguishers exit signs
You'll bolt
Last layer
The bonkers can push the whole dome over. Make them be as vertical as possible.
Slug trail is very dangerous, it also puts a movement force on the dome.
We need about 6 or 7 people at times to help lift and control shifting. Bonkers must be verical.
Song
it stars with a yellow penta starburst in a blue sky, Mopar would be proud. Red flowers with green leafs. it is Christmas in Ukraine
Brown sphincter surrounded by pink, with silver flower star.
Black forms a large hex, each side 2 members long. at the hex intersections Two orange three black one green.
Halloween
