N.D.H.A. Membership Progress
FRED W. DEUTSCH
Since it organization half a ceutury ago, the
National District Heating Association has accumulated and published a
tremendous quantity of
district heating information, acquiring it from
the experiences of Association members. You
make it available to
yourself by becoming a
member of N.D.H.A.
Not only is the literature available, but also
the Headquarters staff
and Technical Committees are at your call.
The following persons
Mr.Deutsch and organizations can
benefit greatly through membership in N.D.H.A.
1. Public utility or other companies selling steam
or hot-water service to one or more buildings.
2. Municipalities operating or"considering the installation of district heating plants.
3. Plant operators of district and central heating
plants.
4. Building owners, managers and operators.
5. Universities, colleges, hospitals or other institutions operating or considering the installation
of central heating plants.
6. College professors, instructors and students.
7. Consulting engineers, architects and heating
contractors.
8. Sales and utilization men interested in heating.
9. Manufacturers of materials and equipment used
in public utility and district heating plants.
Some of the benefits YOU derive from membership in the National District Heating Association
are:
1. A copy of the Proceedings of the annual
meeting of the National District Heating Association containing- papers, reports and discussions on
all phases of district heating design, construction,
operation and maintenance with invaluable comparative data on large and small heating plants,
goes to each member.
2. A copy of the N.D.H.A. quarterly magazine,
"District Heating," presenting up-to-date information of great help to plant operators, engineers and
manufacturers is delivered to each. .
3. Special publications or pamphlets are issued
from time to time by technical or standing committees of the Association, containing valuable
research data and statistics useful in your work.
4. Advantageous business and personal contacts
are made by attending the annual meetings of the
Association.
ON JAN. I, '43 '44 '45 46 '47 '48 '49 '50 '51 '52 '53 '54 '55 '56 '57 '58'59 '60
YEAR
600
' 0":
UJ
"~' e-
UJ
:::e 500 r---
...J
~
0
t-
V .........
N.D.H.A.
MEMBERSHIP
TRENDS
/
TOTAL MEM ER
/
400
V
Fifteen years ago the Association had 400 members. At the end of 1958 the total was 527, an
increase of 127 members or 31 per cent. The yearly
trend is shown in Fig. 1.
The classifications of the 527 members registered
at the end of 1958 is given in Table "A". This
table gives an accurate distribution of members
among the various phases of the heating industry,
except "Allied Companies." In the latter category
there are universities, colleges, other institutions
of learning, hospitals, college professors, instructors, consulting engineers, architects, heating contractors, etc. For a breakdown of these 80 "Allied
Company" members, see Table "B".
Table A
Membership Classifications
Honorary
District Heating Company
District Heating Personal
Allied Company
Allied Personal
Associate Company
Associate Personal
6
52
250
80
10
52
77
TOTAL
527
Table B
Analysis of Allied Company Classification
Consulting Engineers
Schools, Colleges, U ni versi ties
Hospitals and Institutions
Stores, Buildings, Shopping Centers
Overseas
Miscellaneous
24
26
:l
8
14
5
TOTAL
80
The geographical location of members in the
N.D.H.A. is given in Table "C". There are 32
states and nine foreign countries represented. We
have also identified the top ten or leading states
in membership; with top honors going to New
York, followed by Pennsylvania, Michigan, Massa-
