Contents

Features

38  Seeking Zero Energy

    By Roger E. Frechette III, P. E., LEED AP, and Russell Gilchrist

48  An Elegant Solution: The Lake Brazos Labyrinth Weir

       By Victor M. Vasquez, P. E., M. ASCE, John S. Wolfhope, P. E., A. M. ASCE, and Ricky Garrett, P. E.

56  Refining Residuala

       By Michael R. Leffler, P. E., and Paul Bizier, P. E., F. ASCE

64  Crossing the Limits

By Chongxu Wang, Yuancheng Peng, Ph.D., and Yinbo Liu, Ph. D., P. E.

Departments

8　Letters

10　Polity Briefing

16　Civil Engineering News

       Pyramidal City

       Cantilevered Structure

       Irving Convention Center

       Alameda Point Remediation

       Gusset Plates Spotlighted

       Depot Relocated

       Eight-hundred-bridge Plan

       Road Projects Ready

       “Green” in Ukraine

       News Briefs

32  Technology

34  History Lesson

37　Editor’s Note

70　Books

88　The Law