Back Home



Structural Design, Analysis & Investigation

We provide structural engineering services to a wide variety of clients, including building owners & buyers, architects, builders, civil  engineers, real estate firms and law firms.

For removal of interior bearing wall, "header" beam is necessary. We prepare plans & specifications, often based on information provided by customer. Please contact us to discuss your project. 

New for holidays===>>> posters of vintage railroad bridges. 


See report (12-5-18; 45 pages) about collapse of house in Hamilton New Jersey. 

Use back arrow to return to site. 

Design of new foundations to support raised houses has been performed for many projects along New Jersey shore. Please call or email to discuss your project.

See report (11-20-17; 107 pages) about FEMA process for structural flood damage claims. 

Use back arrow to return to site. 

See comments about replacement of Glimmer Glass Bridge submitted to county project team. 

Comments on Glimmer Glass bridge proposal - 030718 JFM vpdf.pdf (PDF — 276 KB)


John F Mann, PE to present webinar "Structural Design Defects" on April 20, 2018. Contact Lorman Education for further information. 

John F Mann, PE presented webinar, "Foundation Damage and Repair" on March 2 & 3, 2016. In 2015, seminar was presented in Cherry Hill, NJ and Nashville, TN. 

Mr. Mann presented seminar "Building Codes in New Jersey" in 2014. Code requirements for supporting raised houses in flood zones were highlighted. 


We offer the following basic services:


Engineering services (requiring PE seal) currently provided for projects in New Jersey, New York, Pennsylvania, Maryland & DC.

However, basic questions from anyone can be answered. A new section ("Questions & Answers") includes brief answers to queries made by visitors.


Report discussing defective basement foundation walls in New Jersey is available; see Foundation Wall Design. Use back arrow to return to site. 


Recent Projects

See article about basic terms for steel construction.

(Should open separate window)


Report about valley truss connection design in Sun City Hilton Head, Bluffton SC; Valley Truss Report


See the following CV for John F Mann, PE;

CVJFM November 2017 vpdf.pdf (PDF — 215 KB)

Please contact us to discuss your project requirements. Evaluation of various problems can sometimes be performed based on information provided via email and phone. Answers to relatively easy questions are often provided without charge.


Lighthouse at Sandy Hook, NJ (September 2008).

Built in 1764, this is the oldest operating lighthouse in the US.

photo by John F Mann, PE

For additional information; Sandy Hook Lighthouse





After 4 years of steady increase through 2014, site traffic has leveled off, though Visitors have increased in 2018. 

Basic software to be added during 2019. 

Year    Visitors             Page Views 

2019     96,803            118,556    (to 11-14-19)

2018   118,293            151,910

2017   107,001            148,146

2016   104,299            145,864 

2015   107,962            148,079

2014   105,219            152,748   

2013     81,696            119,566

2012     73,375            116,973  

2011     46,275              72,263 

2010     15,149              23,001 (2 months)


Visitors have arrived from every corner of the US and world. Numerous visitors have dropped by from Canada and a wide variety of other countries, including Australia, UK, India, Italy, Ireland, Russia, China, France, Malaysia, Philippines, Vietnam, South Africa, Iran, Saudi Arabia, Libya, Israel, Papua New Guinea, Haiti and even Nepal.


Most popular pages have been "Structural Ridge Beam", "Beam Design - Basic" and "Solar Panels On Sloped Roof". 

See photos of damage from hurricane Sandy on separate page (from list).


Collapse of Foundation Wall (August 2011)

Photos below show effects due to total collapse of long segment of block foundation wall supporting commercial building in Pennington NJ. Height of soil backfill against the wall had already exceeded standard limits such that the wall was already cracked. Water from tropical storm Irene saturated backfill, providing additional pressure that resulted in total collapse into basement.


Sidewalk collapsed downward as foundation wall collapsed inward.









View from inside basement, looking towards collapsed segment of block foundation wall.

Remaining walls around basement were also cracked and pushed inward, due to excessive height of soil backfill pushing against these walls.


Photos below, showing construction of a segmental concrete bridge in New Jersey, are for general interest. Design was performed by others for NJDOT. The bridge is now completed and open for traffic in both directions.


First half of new segmental concrete bridge over inlet to Shrewsbury River from Sandy Hook Bay, between Highlands and Sea Bright, New Jersey.

View is from top of hill below north tower of Twin Lights in Highlands.

The northbound bridge has now been completed, alongside the southbound bridge.  



For history of Twin Lights; Twin Lights Highlands NJ



Looking north towards bridge under construction; August 2009.

Lower span is the former drawbridge which has since been removed.

Photos by John F Mann, PE