Section 1. The name of this organization shall be the SIGMA PHI DELTA FRATERNITY.

Section 2. The object of the Fraternity shall be to promote the advancement of the Engineering Profession; to foster the advancement of Engineering Education; to instill a greater spirit of cooperation among Engineering students and organizations; to inculcate in its members the highest ideals of Virtuous manhood, good Citizenship, obedience to Law, and Brotherhood; and to encourage excellence in Scholarship.

Section 1. The supreme legislative power of the Fraternity shall rest in the General Convention, which shall be a continuous body. Regular sessions of the General Convention shall be held every odd year. Upon call of the Grand President, approved by 3/4th of the members of the General Convention, special sessions may be held and shall have full power to act in all matters. The General Convention may transact any business by correspondence.

Section 2. The General Convention shall consist of the following:

Section 1. The supreme judicial power of the Fraternity shall rest in the General Convention.

Section 2. Every member of the Fraternity is under the original jurisdiction of the Active Chapter of which he is or was last a member. Charges must be filed against a member with a body having original jurisdiction, except that a change of venue may be ordered by the General Convention when the parties will be better served or when it is shown that an impartial trial cannot be conducted by the accused's Active Chapter. Trial in this case may be before a special commission of 3 members appointed by the General Convention to conduct the trial. The procedure shall be provided for by Law.

Section 3. Offenses cognizable by the Fraternity are:

(a) Commission of a flagrant offense against the Laws of the land or of the College;

(b) Violation of the Laws of the Fraternity or the lawful orders of any organized unit thereof;

(c) Violation of the oath taken at the time of initiation;

(d) Conduct prejudicial to good order and discipline or unbecoming to a gentleman;

(e) Delinquency in accounts;

(f) Failure in scholarship.

Section 1. The executive powers of the Fraternity shall be vested in the Grand President, assisted by the Province Councilors, and such others as may be prescribed by Law.

Section 2. The Grand President shall be the executive head of the Fraternity, and shall be responsible for the general welfare of the organization. He shall perform such duties and assume such powers as are necessary to carry out his work, subject to the Laws of the Fraternity.

Section 3. The Grand President shall preside at all sessions of the General Convention and of the Supreme Council, but he shall not have a vote on the latter except when his vote would result in a tie or in the event of a tie vote. In the former case, to pass such legislation would require a clear majority vote.

Section 4. The Grand Vice-President shall assume the Office of Grand President in the case of the permanent disability of the Grand President. He shall perform such other duties as are provided for by Law.

Section 5. An Executive Secretary shall be appointed by the Grand President, subject to approval by the Supreme Council. Subject to the orders of the Grand President and the Laws of the Fraternity, the Executive Secretary shall keep all necessary records and files pertinent to the welfare of the Fraternity, in electronic form, as hereinafter provided.

Section 6. The Fundraising Manager / Circulation Manager, appointed by the Grand President, with the approval of the Supreme Council, shall have his duties described, hereinafter. 

Section 7. It shall be the duty of the Communications Director to publish the CASTLE and handle Public Relations of the Fraternity. He shall be responsible for the cohesive layout and graphical design of all Fraternity publications and electronic media, except as hereinafter provided.

Section 8. The Information Systems Manager, appointed by the Grand President, with the approval of the Supreme Council, shall have is duties described, hereinafter.

Section 9. A Treasurer shall be appointed by the Grand President, subject to approval by the Supreme Council. Subject to the orders of the Grand President, Executive Secretary and the Laws of the Fraternity, the Treasurer shall keep all financial records of the Fraternity, electronically, using the Official Financial System of the Fraternity. He shall have charge of all Fraternity funds not otherwise provided for, and shall disburse the same as hereinafter provided. He shall be required to provide a bond, as fixed by Law.

Section 10. There shall be a Board of Trustees of Sigma Phi Delta Fraternity, which shall acquire and hold all real property and all other property and equipment of the Fraternity. The Board shall have charge of all endowment funds of the Fraternity, which the Treasurer shall pay to the Board. The Board shall submit such reports as shall be prescribed by the Statutory Code. The Board shall be subject to the Laws of the Fraternity, which shall prescribe its duties and methods of operation and shall be incorporated in the State of California.

Section 11. The Board of Trustees shall consist of 4 members, of whom 1 shall be the Grand President and 1 the Executive Secretary (Ex-officio without vote). The other 2 members of the Board shall be elected from open nominations at the regular sessions of the General Convention and shall hold office for 4 years. The elections shall alternate, only 1 member being elected during each biennium. 2 of the members must be resident within California. For elected members, 5 years shall have passed between the receipt of their baccalaureate degrees and their assumption of office.

Section 12. The Board of Trustees shall hold at least 1 regular meeting per year, which shall be web-based. A quorum shall consist of 2 elected members and all business shall require the approval of the 3 elected members but the approval of the 3rd may be secured by email. The Board shall organize by electing from its elected members a Chairman, a Vice-Chairman and a Secretary-Treasurer. The term of office shall be 1 year, beginning on January 1st..

Section 1. A pledge is a candidate for membership who is a male student working toward a degree in Engineering at the School where the Chapter is located. Upon specific petition by the individual Chapter, the General Convention may give permission for a Chapter to pledge students working for a degree in a 4-year Accreditation Board for Engineering and Technology (ABET) accredited engineering technology curriculum at the School where the Chapter is located.

Section 2. Members in the Fraternity shall be:

(a) Undergraduate. An Undergraduate member shall be an undergraduate student who has been received into membership.

(b) Alumnus. An Alumnus member shall have been an undergraduate member at the time of graduation or withdrawal from School, or shall be a regularly enrolled graduate student.

(c) Faculty. A Faculty member shall be a member of the Engineering and allied faculties who has been received into membership.

(d) Honorary. An Honorary member shall be an outstanding engineer elected to the Fraternity-at-Large by the General Convention.

Section 3. Persons must be admitted to pledgeship and membership as provided by Law.

Section 1. An Active Chapter shall consist of the undergraduate members in good standing and such Alumni members as signify their intention of remaining or becoming subject to the Laws of that Chapter, provided they are regularly enrolled students in the School at which the Chapter is located. Upon specific petition by the individual Chapter and with a three-quarter vote, the General Convention may give permission for that Chapter to pledge and to initiate male students working toward a degree in Engineering and/or Engineering Technology at the School of recognized standing, as listed in the most recent edition of ABET, in the geographical area of the petitioning Chapter. Members so initiated shall have all rights, duties and privileges accorded any other pledge or member of the Sigma Phi Delta Fraternity.

Section 2. An Active Chapter may be established at any technical school of recognized standing [as listed in the most recent issue of ABET (USA) or equivalent national accrediting organization (non-USA)] offering courses leading to a baccalaureate degree in one or more recognized branches of Engineering. For chapters outside the USA, the ABET-equivalent requirement may be waived if such is deemed by the Supreme Council to be in the best interest of the fraternity.

Section 3. A petition for the establishment of an Active Chapter shall be prescribed by Law, and shall be signed by at least 10 men qualified for membership. Petitioning groups accepted shall be installed by the Grand President or by a deputy appointed by him.

Section 4. A local fraternity may be initiated into Sigma Phi Delta if a majority, and not less than 10, of its active members are Engineering majors. Future members must meet the requirements of Article VI, Section 1, of this Constitution. Alumni Engineering students shall be entitled to all privileges accorded Alumni of Sigma Phi Delta.

Section 5. An Active Chapter shall adopt a set of By-Laws and may make such other rules and regulations as may be necessary. Such By-Laws, rules and regulations must be approved by the Supreme Council before they become effective.

Section 6. Regular meetings shall be held at least twice a month during the school year at such times and places as the members of the Chapter shall determine. A quorum shall consist of at least a majority of the Active members of the Chapter, including 2 elective officers. Chapters shall be encouraged to maintain chapter houses, and the Fraternity shall have power to make any necessary rules pertaining thereto.

Section 7. A Colony may be established at any technical school of recognized standing [as listed in the most recent issue of ABET (USA) or national equivalent accrediting organization (non USA)] offering courses leading to a degree in 1 or more recognized branches of Engineering in anticipation of petitioning for Charter as an Active Chapter of the Sigma Phi Delta Fraternity. For chapters outside the USA, the ABET-equivalent requirement may be waived if such is deemed by the Supreme Council to be in the best interest of the fraternity.

Section 1. Every Active Chapter shall maintain an Alumni Association, consisting of all Alumni Members of said Chapter and all Alumni of any former group who are in good standing, regardless of place of residence or affiliation with other Alumni organizations. The Alumni Association shall not have power to levy any assessments whatever against its members, but shall receive from the Fraternity such funds as shall be provided for by Law, but such Associations must send each member a bulletin of general news and information at least once each year. The organization of such Associations shall be provided for by Law.

Section 2. An Alumni Chapter may be established in any city or locality upon petition of not less than 10 resident Alumni Members in good standing. Such petitions must be approved by the Supreme Council. Such Chapters shall not have the power of conferring membership in the Fraternity. They shall have the right to adopt By-Laws and such other rules and regulations as may be necessary, provided such are not in conflict with the Laws of the Fraternity, but such By-Laws and rules must be approved by the Supreme Council before they are effective. Such Chapters may be incorporated for the purpose of holding property. Property so held may be used by such Chapters for its members or may be leased to Active Chapters for Chapter House purposes. Any necessary Laws regulating the formation of such Chapters or their government may be enacted by the Fraternity.

Section 1. Charter fees, initiation fees, international dues, and other fees and assessments may be provided for in the Statutory Code.

Section 2. All charged levied against any organized unit of the Fraternity shall become delinquent 1 month after they fall due. An organized unit, which becomes delinquent, shall automatically be suspended until paid up in full. A note, with satisfactory security, may be accepted as payment.

Section 3. Alumni members shall not be subject to any assessments by the International Office, but are exptected to donate, annually.

Section 4. Any organized unit of the Fraternity (except Alumni Associations), may fix assessments, fees, fines, and dues by a ballot vote, which may be electronic, of not less than 2/3rd of its members in good standing.

Section 5. All charges against members shall be posted to become due the 1st day of the following month. A member delinquent for 1 year shall be automatically expelled from the Fraternity, unless he shall present a satisfactory reason for his inability to pay; the acceptability of the reason being in the hands of the Supreme Council. A note with satisfactory security may be accepted in lieu of cash.

Section 1. The Laws of the Fraternity shall consist of The Constitution, The Statutory Code, The Ritual, The Risk Reduction Policy, Acts of the Supreme Council, and Executive Orders.

Section 2. This Constitution is the Supreme Law of the Fraternity, and all other Laws must be in accord with it. The interpretation of the Constitution shall rest with the Supreme Council.

Section 3. The Ritual shall contain the ceremony for the initiation of members, the installation of chapters, the installation of officers, ceremonies connected with meetings, and any other ceremonies of a secret nature which may be included from time to time. Additions or modifications of the Ritual may be made by a majority vote of the General Convention or by a 3/4th vote of the Supreme Council.

Section 4. The Statutory Code shall contain the necessary rules and regulations to carry out the provisions of this Constitution, to provide for the proper operation of the Fraternity, and to provide specifications and restrictions concerning badges and other insignia. The Statutory Code may be enacted or amended by a majority vote of the General Convention or by a 3/4th vote of the Supreme Council.

Section 5. Acts of the Supreme Council shall consist of such minor regulations or such provisions as require frequent changes as may be enacted by the Supreme Council by a majority vote, but such acts must not conflict with The Constitution, The Statutory Code, The Ritual or The Risk Reduction Policy.

Section 6. Executive Orders include all orders issued by the executive offices of the Fraternity, not in conflict with any of the foregoing Laws. All Executive Orders may be appealed to the General Convention in case of question regarding conflicts with other Laws.

Section 1. This Constitution can be amended or repealed in whole or in part by a 3/4th vote of the General Convention.

Section 2. This Constitution repeals all former Constitutions and all other Acts in conflict therewith.

Section 3. This Constitution was approved by the Fraternity on May 15, 1930, and went into effect on August 30, 1930. It was revised by the Third General Convention, which ended September 2, 1931, at Fargo, North Dakota, Epsilon Chapter as Host.

Section 4. This Constitution was revised by a Committee, the Chairman of which was appointed by the Grand President at the Seventh General Convention, which ended January 4, 1948, in Chicago, Illinois, Iota Chapter as Host. The revised Constitution was approved by the Fraternity on November 1, 1948, and went into effect on November 1, 1948.

Section 5. This Constitution was revised by a Committee appointed by the Grand President at the Eighth General Convention, which ended September 3, 1949, at Los Angeles, California, Alpha Chapter as Host. The revised Constitution became effective on January 1, 1950.

Section 6. This Constitution was revised by a Committee appointed by the Grand President at the Ninth General Convention, which ended September 5, 1951, at Vancouver, British Columbia, Theta Chapter as Host. The revised Constitution became effective on January 1, 1952.

Section 7. This Constitution was revised by a Committee appointed by the Grand President at the Tenth General Convention, which ended September 5, 1953, at Detroit Lakes, Minnesota, Epsilon Chapter as Host. The revised Constitution became effective on January 1, 1954.

Section 8. This Constitution was revised by a Committee appointed by the Grand President at the Eleventh General Convention, which ended September 3, 1955, at Milwaukee, Wisconsin, Eta Chapter as Host. The revised Constitution became effective on January 1, 1956.

Section 9. This Constitution was revised by a Committee appointed by the Grand President at the Twelfth General Convention, which ended September 7, 1957, at Hamilton Lake, Indiana, Kappa Chapter as Host. The revised Constitution became effective on January 1, 1958.

Section 10. This Constitution was revised by a Committee appointed by the Grand President at the Twentieth General Convention, which ended September 1, 1973, at Moorhead, Minnesota, Epsilon Chapter as Host. The revised Constitution became effective on January 1, 1974.

Section 11. This Constitution was revised by a Committee appointed by the Grand President at the Twenty-First General Convention, which ended August 30, 1975, at Los Angeles, California, Alpha Chapter as Host. The revised Constitution became effective on January 1, 1976.

Section 12. This Constitution was revised by a Committee appointed by the Grand President at the Twenty-Fourth General Convention, which ended September 5, 1981, at Daytona Beach, Florida, Pi Chapter as Host. The revised Constitution became effective on January 1, 1982.

Section 13. This Constitution was revised by a mail ballot vote of the General Convention on June 20, 1988. The revised Constitution became effective on June 20, 1988.

Section 14. This Constitution was revised by a mail ballot vote of the General Convention on April 1, 1993. The revised Constitution became effective on June 30, 1993.

Section 15. This Constitution was revised by a mail ballot vote of the General Convention on November 1, 1997. The revised Constitution became effective on January 1, 1998.

Section 16. This Constitution was revised by a mail ballot vote of the General Convention on December 15, 1999. The revised Constitution became effective on January 1, 2000.

Section 17. This Constitution was revised by a mail ballot vote of the General Convention on September 30, 2002. The revised Constitution became effective on that date.

Section 18. This Constitution was revised by action of the 35th General Convention on July 26, 2003, at Urbana, Illinois, Delta Chapter as Host. The revised Constitution became effective on that date.