Structural Engineering Resources

Hazards by Location - Resource from ATC with the ability to lookup the design loads for any location. Simply input the location and get access to the wind speeds, ground snow load, seismic parameters and even tornado wind speeds. For wind speeds, data is also available at mean recurrence intervals of 10 yr, 25 yr, 50 yr and 100 yrs. Data is available for ASCE 7-05, 7-10 and 7-16.
UpCodes - Online, interactive library of codes based on IBC and with a searchable database for each state. Compliance with building codes across various states is much simpler with this tool.
Seismic Criteria - Seismic Design Criteria from USGS for either IBC 2012 or 2015. User can input soil classification, location, and risk category and get location specific data including Ss, S1, SDs and SD1. The detailed report also includes the Seismic Design Category.

AISC Shape Properties - Steel Detailing tool from AISC is a quick reference for all structural steel shapes.
STI Capability Tool - Interactive database from the Steel Tube Institute with availability of different shapes and grades of HSS and tubes.
AISC Steel Tools - Database of user submitted calculations and spreadsheets.
Structural Welding Quality Handbook - Published by SSTC, this handbook is easy to flip through and has loads of useful information on welding and AWS D1.1 references.
Structural Bolting Handbook - Published by SSTC, this handbook provides information on bolting and references AISC and RCSC.
Design of Welded Structures - This timeless reference book by Omer Blodgett should be in the library of any engineering designing welds and is a fantastic resource for analysis techniques for complex weldments.
Handbook of Structural Steel Connection Design and Details - One of the few books on steel connection design, and includes a good mix of theory and practical considerations for designing steel connections.
Steel Structures Design - This textbook by Allan Williams is great for a practicing engineer as well as a great reference for the PE or SE Exams.
AISC Design Guides - AISC has published 30+ design guides on various steel engineering and construction topics that are a must-have for any engineer doing a lot of structural steel design.