- ad National Storm Shelter Association (NSSA)
- nssa.cc
- Formed to ensure the highest quality of manufactured and constructed tornado and hurricane shelters.
- National Association of Home Builders (NAHB)
- www.nahb.org
- Trade association that helps promote the policies that make housing a national priority within the United States. Offers resources, publications, news, events and research to the housing industry and the general public.
4.3
(si*)
>610
>10
6
- Council on Tall Buildings and Urban Habitat
- www.ctbuh.org
- An international organization focused on the planning, design, construction and operation of tall buildings. Membership information, publications, conferences, leadership, and news are featured.
4.2
(si*)
>710
>20
6
- Institute for Research in Construction - IRC
- www.nrc-cnrc.gc.ca
- Works to improve the safety, durability and comfort of Canadian workplaces, homes and public infrastructure while helping builders become more competitive. Includes fact sheets, publications, and events.
4.1
(si*)
>10
-
7
- Associated Builders and Contractors (ABC)
- www.abc.org
- National trade association representing merit shop contractors, subcontractors, material suppliers and related firms in the United States. Chapter locator, history, leadership, community service initiatives, and contractor search directory are showcased.
4.1
(si*)
>400
<10
6
- National Joint Apprenticeship and Training Committee
- www.njatc.org
- The NJATC was created in 1941 and has developed into what perhaps is the largest apprenticeship and training program of its kind.
4.0
(si*)
>100
<5
5
- Industrial Rope Access Trade Association (IRATA)
- www.irata.org
- Promotes a safe working environment for industrial rope access through its operational guidelines, training and assessment programs for industry operatives.
3.9
(si*)
>820
-
4
- NFRC. National Federation of Roofing Contractors
- www.nfrc.co.uk
- UK. Trade organization for UK roofing contractors, dedicated to training and education, technical consulting, business services and market promotion. Company and searchable product directories. Links to related sites.
3.9
(si*)
>140
-
5
- Master Pools Guild
- www.masterpoolsguild.com
- Site of international association of pool builders features membership information, member locator, and a step-by-step description and photos of a pool under construction.
3.9
(si*)
>110
<5
4
- Nexstar Network
- www.nexstarnetwork.com
- Member-owned association that is an affiliation of independent electrical, heating, cooling and plumbing service contractors within Canada and the United States. Job seekers area, organizational background and services are featured. Formerly, Contractors 2000.
3.9
(si*)
>220
<5
4
- American Society of Professional Estimators
- www.aspenational.org
- ASPE. The American Society of Professional Estimators serves construction estimators by providing education, fellowship, and opportunity for professional development.
3.9
(si*)
>70
-
5
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