Which of the following is not used as part of constructing a roof?

Which of the following is not used for reinforcing concrete?

Which of the following is not a form of a structural system?

Which is not a common length of rebar?

Which is not a brand of doors and windows?

These are commonly used for chain link fencing and insect screening

These structures were formerly storage facilities and were adapted as mobile military shelters which can also be found in Subic Bay Freeport Zone, formerly U.S. Naval Base Subic Bay.

This type of iron is used for decorative railings, fences, grilles, and small objects.

This type of bar is usually used for decking, trusses, wall studs, scaffoldings, concreting, and welding.

This method of soldering includes a joining process of immersing workpieces  in a pot of molten solder.

Which of the following is not a roofing company?

Which of the following is not part of the six brazing materials major types?

Which of the following materials is best for gently sloping short roofing such as for a porch canopy?

Which of the following is not mainly used as a connector?