Construction technology 1

4. series of linked metal rings used for fastening or securing something, or for pulling loads
6. outside part or uppermost layer of something.
8. -(of an animal) make a hole or tunnel, typically for use as a dwelling.
9. in a material or physical form; not abstract.
13. A person who excavates an archaeological site.
15. state of something with regard to its appearance, quality, or working order.
17. arrangement of and relations between the parts or elements of something complex.
19. machine for mixing things, especially an electrical appliance for mixing foods.
20. tool or machine with a rotating cutting tip or reciprocating hammer or chisel, used for making holes.

1. piece of metal or other hard material curved or bent back at an angle, for catching hold of or hanging things on.
2. long-handled gardening tool with a thin metal blade, used mainly for weeding.
3. Build or make (something, typically a building, road, or machine)
4. thick rope of wire or hemp used for construction, mooring ships, and towing vehicles.
5. large, tall machine used for moving heavy objects by suspending them from a projecting arm or beam.
7. necessary items for a particular purpose.
10. thing that crawls or moves at a slow pace, especially an insect.
11. - closely and neatly packed together; dense.
12. or knock down (a building)
14. -A score of one stroke over par at a hole
16. A large natural or artificial lake used as a source of water supply.
18. brace, band, or clasp for strengthening or holding things together.