14 resultados para 646.72
em Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States
Resumo:
Bureau of Nutrition and Health Promotion part of the Iowa Department of Public Health produces of weekly newsletter about the Iowa WIC Program for the State of Iowa citizen.
Resumo:
The purpose of this manual is to organize, document, and combine Iowa Department of Transportation (Iowa DOT) policies and procedures for bridge inspection practices and post-inspection recommendations so Iowa DOT personnel, local agencies, and consultants will have a readily available resource for their use. Previously, bridge inspection policies and procedures were documented by various means, making it difficult to provide consistent answers to questions regarding bridge inspection topics. This manual is intended to ensure uniformity and document best practices for inspection of Iowa’s bridges, especially as experienced inspection personnel retire.
Resumo:
The purpose of this manual is to document the Iowa Department of Transportation (Iowa DOT) policy and procedures for load rating and posting of structures within the State of Iowa. This manual is intended to ensure that every bridge is rated as to its safe load carrying capacity. This manual presents guidelines and procedures for rating bridges and outlines the documentation required
Resumo:
The Bridge Maintenance Manual is published solely to provide information and guidance to bridge maintenance personnel when repairing bridges in the state of Iowa. This manual is issued to secure, so far as possible, uniformity of practice and procedure in methods developed by experience. Budgetary limitations, volumes and types of traffic, local conditions and other factors may render complete compliance with the guidelines set forth, in this manual, impossible or impractical. This manual is not purported to be a complete guide in all areas of bridge maintenance and is not a substitute for engineering judgment.
Resumo:
The Iowa State Highway Commission purchased a Conrad automatic freeze and thaw machine and placed it in operation during October 1961. There were a few problems, but considering, the many electrical and mechanical devices used in the automatic system it has always functioned quite well. Rapid freezing and thawing of 4"x4"xl8" concrete beams has been conducted primarily in accordance with ASTM C-29l (now ASTM C-666 procedure B) at the rate of one beam per day. Over 4000 beams have been tested since 1961, with determination of the resulting durability factors. Various methods of curing were used and a standard 90 day moist cure was selected. This cure seemed to yield durability factors that correlated very well with ratings of coarse aggregates based on service records. Some concrete beams had been made using the same coarse aggregate and the durability factors compared relatively well with previous tests. Durability factors seemed to yield reasonable results until large variations in durability factors were noted from beams of identical concrete mix proportions in research projects R-234 and R-247. This then presents the question "How reliable is the durability as determined by ASTM C-666?" This question became increasingly more important when a specification requiring a minimum durability factor for P.C. concrete made from coarse aggregates was incorporated into the 1972 Standard Specification for coarse aggregates for concrete.
Resumo:
Des Moines River Plat Maps.
Resumo:
Des Moines River Plat Maps.
Resumo:
Des Moines River Plat Maps.
Resumo:
Des Moines River Plat Maps.
Resumo:
Des Moines River Plat Maps.
Resumo:
A quarterly journal of Iowa authors and their works produced by State Historical Society of Iowa.
Resumo:
A quarterly journal of Iowa authors and their works produced by State Historical Society of Iowa.
Resumo:
A quarterly journal of Iowa authors and their works produced by State Historical Society of Iowa.
Resumo:
A quarterly journal of Iowa authors and their works produced by State Historical Society of Iowa.
