CR4 - The Engineer's Place for News and Discussion ®
Login | Register for Engineering Community (CR4)

Sponsored by:
Civil Engineering
Section Forums
Section Blogs
See all Forum Threads

Section Forums

Civil Engineering

2254 threads, 24618 comments (1 Viewing)

Vent In Roof

06/23/2016 by Progress Engineering
We have a machine that generates a large amount of heat and we plan to vent this heat through the roof This is a commercial building with a metal fla...
Pathfinder Tags: hole letter roof vent
Views: 333, Comments: 25
Last comment 06/27/2016 by Kevin LaPaire

Specifying And Marking Off And Excavation

06/15/2016 by piolenc
I need advice on how to specify and mark off an excavation. It's for the basement of my new house. I know the technique of using batten boards to mark...
Views: 235, Comments: 15
Last comment 06/26/2016 by piolenc

Now That's a Tunnel; 57km Long, 2,300m Deep!

06/03/2016 by RAMConsult
...and it requires 15.6 MW for the ventilation system.
Views: 350, Comments: 19
Last comment 06/24/2016 by Casper71

Calculation To Show A Certain Pipe Support Is Enough For Seismic Events

06/01/2016 by Injiniir
Dear all structural engineers, this pipe is running about 10 ft horizontally and then bends down and continues vertically downward for about 10 ft. t...
Views: 266, Comments: 55
Last comment 06/03/2016 by Injiniir
Go to this Forum

See all Blog Entries

Section Blogs

Building & Design Blog

189 blog entries, 1435 comments (0 Viewing)

Accelerated Construction Speeds Up Bridge Fix

06/22/2016 by Engineering360 eNewsletter
To speed replacement of some of the worst bridges in the country, the Rhode Island Department of Transportation has invested in an accelerated bridge...
Views: 195, Comments: 3
Last comment 06/23/2016 by JohnDG

Newest, Longest, Deepest Tunnel in the World

06/08/2016 by HUSH
Last week, Swiss officials had the soft opening for the Gotthard Base Tunnel, which is now qualified as the longest and deepest train tunnel in the...
Pathfinder Tags: railway supply chain transportation tunnel
Views: 253, Comments: 1
Last comment 06/09/2016 by Delmar
Go to this Blog

GEA's Global HVAC Technology Blog

192 blog entries, 1259 comments (0 Viewing)

Heating and Cooling Equipment Data Released

06/17/2016 by geanorm
AHRI released U.S. shipment data for the month of April, 2016 for residential and commercial heating and cooling equipment below 65 MBH. Shipments con...
Pathfinder Tags: global hvac hvac industry trends
Views: 102, Comments: 0

New High Efficiency Refrigerants for Low Pressure Chillers

04/13/2016 by geanorm
A potential drop-in replacement for R-123 in water chiller applications was proposed recently by Chemours, the American chemical company that was spun...
Pathfinder Tags: centrifugal compressors chillers gwp HFO New Refrigerants ...
Views: 220, Comments: 1
Last comment 04/13/2016 by tcmtech
Go to this Blog

Construction Tools & Equipment

64 blog entries, 347 comments (0 Viewing)

Tracked Dump Truck Rotates 360 Degrees

06/15/2016 by Engineering360 eNewsletter
Functionality is the key word for a new generation rubber track crawler that boasts the first ever rotational dumping body. The entire upper frame is...
Views: 173, Comments: 0

Heavy Lifting in Tight Spaces

05/19/2016 by Engineering360 eNewsletter
Commercial job sites with limited space and weight restrictions can now take advantage of an eight-axle all-terrain crane. Unveiled at the recent Baum...
Views: 178, Comments: 0
Go to this Blog

Plant & Facilities Engineering

120 blog entries, 626 comments (0 Viewing)

Measure Productivity to Prevent Project Cost Overruns

06/04/2016 by Engineering360 eNewsletter
While project completion per plan is important for knowing when revenue generation can start or re-start, project cost assessment is an important too...
Views: 95, Comments: 0

Global Corrosion Costs Reach $2.5 Trillion Annually

04/22/2016 by Engineering360 eNewsletter
From pipelines to water treatment plants and airplanes to bridges, the annual global cost of corrosion is $2.5 trillion. A study by the trade associa...
Views: 137, Comments: 1
Last comment 04/25/2016 by Neiljohn
Go to this Blog


88 blog entries, 705 comments (1 Viewing)

VFD Technology Drives HVAC Efficiency

03/24/2016 by Engineering360 eNewsletter
Operating motors at reduced speed and horsepower to meet actual load conditions is an integral part of evolving HVAC codes and standards. The need to...
Views: 187, Comments: 0

Heat Transfer Basics Keep Cooling Towers Running

02/28/2016 by Engineering360 eNewsletter
Considering how critical cooling towers are for heat transfer in facilities, one would think that they are carefully maintained. But often the lack o...
Views: 166, Comments: 1
Last comment 02/29/2016 by horace40
Go to this Blog

Other Blog Entries of Interest

How Would You Fix It? Garage Foundation

08/27/2014 posted in Workbench Creations
by SavvyExacta
The photos below are of a pre-1900 building that was most recently used as a garage. As you can see, there is a problem with the foundation. A plan f...
Views: 887, Comments: 24
Last comment 08/29/2015 by machia0705

Caption This for 06/14/13

06/13/2013 posted in Caption This!
by Kaplin
This week's image: Be sure to vote for your favorite caption! Thanks to Usbport for submitting this image.
Pathfinder Tags: bridge Caption this engineering images fail funny images
Views: 858, Comments: 33
Last comment 06/07/2016 by Gwen.Stouthuysen

November 13, 1927 – The Holland Tunnel Opens

11/13/2009 posted in "On This Day" In Engineering History
by Steve Melito
On this day in engineering history, the first of 51,694 vehicles drove through the Holland Tunnel, a dual-tube structure that passes beneath the H...
Last comment 12/17/2012 by 129CBRider

DIY Grape Arbor (Part 1)

09/14/2009 posted in Workbench Creations
by U V
Well, it has been a busy summer. I built this grape arbor for my parents' 50th wedding anniversary. Then I had arthroscopic surgery on my knee last...
Pathfinder Tags: concrete slab DIY projects grape arbor post pockets rebar
Views: 862, Comments: 2
Last comment 09/17/2009 by U V

Prepare for the Juan De Fuca Disaster

03/27/2008 posted in Rockaholic Adventures
by Shawn
The Juan De Fuca Plate is the modern-day cause of volcanic activity, earthquakes and tsunamis in the northwest quadrant of the continental United S...
Pathfinder Tags: disaster earthquake juan de fuca pacific northwest subduction ...
Views: 1035, Comments: 13
Last comment 04/01/2008 by RHABE