TPAS Case Study: First National Bank, Youngstown, OH

By James V. Banta, Technical Preservation Specialist/Project Manager
Chambers, Murphy & Burge Historical Architecture

First National Bank, Youngstown, OH

First National Bank, Youngstown, OH

Last year, Chambers, Murphy & Burge (CMB) performed a Conditions Assessment of the First National Bank building in Youngstown, Ohio. The 1929 building is among a group of seven early 20th-century office buildings in downtown Youngstown listed in the National Register of Historic Places. First National Bank was designed by Youngstown Architect Morris W. Scheibel and was originally known as the Metropolitan Savings and Loan Co. Building or Central Tower. This 18-story, art deco skyscraper has a high degree of historic integrity and typical of its time, was constructed with structural steel framing that supports its exterior masonry.

West facade showing returns at center window bays

West facade showing returns at center window bays

The west elevation includes four major exterior corners due to the north- and south-facing return walls at the center window bays. CMB utilized TPAS® to identify corners with serious vertical crack systems caused by corrosion of underlying steel columns and cyclical thermal expansion and contraction. During the course of the investigation, CMB noted that brick cracks previously treated superficially with sealant have failed because the underlying conditions and mechanisms of deterioration had not been addressed. Using TPAS CMB was able to clearly illustrate to the owner the extent of such deterioration and make recommendations for long-term repairs.

Annotated elevation drawing showing location and extent of conditions

Annotated elevation drawing showing location and extent of conditions

TPAS Case Study: John Brown House, Akron, OH

By James V. Banta, Technical Preservation Specialist/Project Manager
Chambers, Murphy & Burge Historical Architecture

John Brown House in Akron, Ohio

John Brown House in Akron, Ohio

For this recent Conditions Assessment and Preservation Master Plan project at the John Brown House in Akron, Ohio, Chambers, Murphy & Burge (CMB) used TPAS® to identify exterior conditions for the purpose of evaluating the building envelope and generating a prioritized list of repair items. After preparing photo elevations, our TPAS assessment was conducted efficiently in the course of one day. The John Brown House in Akron was originally a 1.5-story Greek Revival Cottage that has undergone significant additions and modifications altering its appearance and creating challenges for cyclical maintenance as well as interpretation and presentation. With TPAS CMB documented observed conditions based on severity, extent, location, and priority.

Photo elevation with TPAS annotations

Photo elevation with TPAS annotations

John Brown was born on May 9, 1800 in Torrington, Connecticut. In 1805, he moved with his family to Hudson, Ohio. In 1844, Brown moved his family to Akron where they lived in a two room cottage that came to be known as the John Brown House. Brown rented the House from Colonel Simon Perkins with whom he was in business at the time. John Brown infamously went on to lead attacks against pro-slavery forces in Kansas in 1856 and to stage a raid on the federal arsenal in Harpers Ferry, West Virginia in 1859. For his actions, Brown and some of his followers were hanged for treason. The John Brown House remained in the Perkins family until 1942 when it was bequeathed to The Summit County Historical Society who remains its steward today.

TPAS University: Block customization options

Options for block customization in TPAS are virtually endless. Recent TPAS projects have involved adding custom parameters to an existing condition survey block library, creating custom blocks in order to hyperlink non-jpeg data file types to the drawing, and building complex custom blocks for an in-depth survey and characterization of windows and doors. Let’s take a look at each case in more detail.

101-164 ArchMetal_Corrosion Pitted 2015-1

Steel trusses comprising a dam flood gate – the subject of a recent inspection using TPAS

The client for a dam floodgate investigation required data on the condition of individual steel truss members. An existing block library for surveying the condition of structural metals included blocks to record corrosion, deformation, cracking and other conditions. Building on this existing library, additional data inputs were added to each block so that surveyors could record the member type, additional notes, and percentage of section loss or failed fasteners, where applicable. In addition, a new block was created to record instances of leaking seals at the sides of the floodgates.

flood gate dwg

Annotated TPAS drawing of a flood gate truss

flood gate block

Information captured in custom TPAS blocks included percentage of corroded fasteners, section loss due to corrosion, and member type

Adding or removing fields and changing text display options can all be done in the source .dwg file of the blocks, as demonstrated in this video clip. This is a great option for quickly creating customized blocks based on an existing block library.

Sometimes, entirely new blocks are called for. For example, during a building investigation involving the use of ground-penetrating radar (GPR), custom blocks were created to record surveryors’ observations and to hyperlink the GPR data files. Simple blocks such as these can be built quickly within AutoCAD, as in the above example.

For creating complex blocks, or making batch changes to a library of blocks, AutoLISP (a simple list-processor programming language) can be a time-saving tool. For a survey of a large group of historic buildings, custom blocks were built from scratch using LISP routines, in order to capture highly detailed information on windows and doors. This approach essentially transforms a paper-and-pen survey form into a digital record complete with photographs keyed to an exact location on the drawing.

Custom block for surveying door hardware throughout a complex of historic buildings

Custom block for surveying door hardware throughout a complex of historic buildings

These examples are just the beginning of the endless options for customization in TPAS. Please post in the comments below or contact Kelly if you have questions about block customization.

Welcome to the new TPAS website and blog!

We are pleased to announce the launch of the new TPAS website and a fresh look for the TPAS blog!

The new site includes more information, video tours, and downloadable guides for viewers who are new to TPAS. For new and experienced TPAS users, we are excited to present TPAS University, a series of instructional videos addressing frequently asked questions and providing tips for getting the most out of TPAS.

We hope that you find the new site informative and easy to use. Please share your feedback with me at kelly@tpasllc.com.

-Kelly Streeter, TPAS Program Manager

The TPAS Blog

 

The TPAS blog is an informal forum for all things TPAS. We plan to write about hardware and software updates frequently and we encourage comments and questions so that we can  keep in regular touch with everyone. So whether you are a current user of TPAS or have been watching on the sidelines for a while, read on and learn more!

And, as always, if you have any questions give Mike Gilbert or me a call.

Kelly Streeter
kelly@tpasllc.com
917-749-0998

Mike Gilbert
mike@tpasllc.com
607-227-3366