Dating old concrete, age of concrete - structural engineering general discussion - eng-tips

How Old is My House Reader Photo Submissions

It became attractive to engineers and architects alike, for its freedom of form, fire resistance, and high tensile strength. On the other side of this door was a small keyhole and a white ceramic door knob. The text is intended as a reference guide to help building owners operate and maintain their home effectively. With mass customization software, these two facts can be reconciled in an automated, customer-facing experience called a product configurator. Ceiling joists for the top floor are nailed to the sides of the balloon-framed wall studs just as the floor joists were nailed below.

  1. Let this dry for a few minutes.
  2. The twisted bar is made by twisting a plain, square bar cold.
  3. That is Tri-sodium Phosphate?

Red Flag This Post Please let us know here why this post is inappropriate. He is also a contributor to InspectApedia. Your best bet is to dye the new slabs to match the old.

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Identify or Date age of Rebar - Friendly Metal Detecting Forums

Join your peers on the Internet's largest technical engineering professional community. The collection includes documents that are rarely found in other libraries nor in other online collections for preservationists. Theses cracks are hairline, and are barely noticeable. On occasion we'll find a very old structure which has been moved and re-set on a new concrete or concrete block foundation, adding more historical information to the home. Professor Wickersheimer specializes in structural failure investigation and repair for wood and masonry construction.

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Of course in all likelihood this stuff could have been hauled in years later as back fill and its just a coincidence. First floor joists and second floor joists are framed by nailing to these tall wall studs at the appropriate heights. Sounds like you know where I was actually looking.

Dating old concrete


Carbon dating should get you within a few thousand years or so. Unfortunately concrete is opaque, preventing its dating by the very distinctive patented reinforcement within, unless the concrete cover is broken away. These details can also indicate where additional safety inspections or perhaps repairs or updating are needed for safe use of a chimney, fireplace, building heating system, or wood stove. For the amount of movement shown in your concrete stair photo, expensive repairs are not yet justified but they might become necessary if settlement continues. Depending on the configuration, you could get a decent guess as to when the concrete was poured, with-in decades.

If I were you I would give the fellow a good paint job! While varying somewhat by area of the country in the U. Even with such effort, you're only likely to get within the same decade or two.

The reason is pretty obvious. How can my castings with smoother surfaces? See our book review of this publication. As you can see from the Carson Dunlop Associates sketch above, the supported slab is a lot like the floating slab - it claims to have gravel and claims to have compacted soil below the slab.

History of the Use of Wood and other Wall Paneling in North America

Apart from Ordinary Portland Cement opc Concrete, other concrete mixes have been used throughout the last hundred years for specific properties, such as lightness or rapid hardening. It's easy to join and it's free. This is meant to be a subtle technique that should not even look painted, but just naturally aged. Wall studs and first floor joists rest on the building sill plates flat wood members set atop the building foundation.

It's from around the turn of the century when the lake was built. The location, size, shape, building materials, and use of chimneys on buildings offer good details aiding in estimating the age of a building. If those clues of actual footing settlement and foundation movement are absent, you are more likely seeing settlement in the concrete slab itself.

Reinforced concrete technology was developed by continental engineers and transferred back to the uk in the s. In the instances where I have seen it used there seemed to be a decrease in durability of the concrete. Download Now Products come in all shapes and sizes, and customers demand solutions tailored to their needs. All of the common building foundation materials, how they fail, how they are inspected, are discussed. This is a thin technique that lets the concrete colour through.

The accuracy to within a couple of years is needed. The Eng-Tips staff will check this out and take appropriate action. These furnaces are the ancestor of modern forced hot air heating systems. The result can be future slab settlement and cracking, exacerbated by changes in site conditions more water, less water, freezing, drying that may affect the soil below the slab. Common wood structure framing methods include the techniques described below, arranged alphabetically, not by age.

Age of Concrete - Structural engineering general discussion - Eng-Tips

Age of Concrete Age of Concrete Is there a quick way to find out the approximate age of small concrete samples? Vinyl floor tiles, including vinyl-asbestos floor tiles and homogenous vinyl floor tiles non-asbestos product are almost as old as asphalt floor tiles. Problem is it looks like when they were re working the Dam they covered a lot of it up I think.

Age of a House - A Photo Guide to Building Age

It must be called something else here in New Zealand and I so want to follow you and try this to age my concrete bits and pieces. Pergo laminate flooring was first sold in the U. The copper patina sounds great and do make it not so perfect or bright coloured! You'll never get the old concrete to look that brand new whitish color again.

How to Evaluate Cracks in Poured Concrete Slabs

How Old is My House Reader Photo Submissions

Perhaps you could ask your local building inspector and let me know what she or he says. Well liked for its mixture of theory and practice the new edition will complement Hinks and Cook's student textbook on defects at the practitioner level. Ransome patented the system of twisting square steel bars to increase strength and adhesion to concrete.

Tall wall studs run from the sill plate atop the foundation wall to the top plate below the building rafters. The original covering was linoleum for use as a floor decking on British naval ships. If settlement continues you may be able to use a slab-jacking or helical pier repair as an alternative to reconstruction. Search the InspectApedia website. We name and illustrate these and discuss their periods of use below as an aid in finding out how old a building is and tracing its history.

  • One visible exception is the use of expanded metal as soffit reinforcement from until the Second World War.
  • Control points are not v-shaped.
  • We live in Austin, Texas and the drought has been really bad here, and recently we have discovered a few hairline cracks in a few different tiles.
  • This encouraged the use of pre-stressed concrete, and no-fines mass concrete construction.
  • Feilden Clegg Bradley Studios gets green light for storey Bristol tower.

The first uk Hennibique rc building was the now-demolished Weavers Mill in Swansea. It will depend on how long you want the piece to last. Resilient floor coverings include organic flooring materials such as asphalt tile, cork tile, linoleum, rubber flooring, vinyl tile, vinyl sheet flooring. You would need a chart or reference that gave the dates of when rebar changed from smooth to round, square, twisted, etc.

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Mass concrete seemed the ideal non-combustible replacement for timber. Aluminum siding and then vinyl siding were sold both for that purpose and also as exterior wall cladding for new construction as well. Soon after asphalt-asbestos floor tiles were marketed manufacturers heard from their buyers that consumers wanted lighter floor tiles and tiles of varying color and pattern. But in general we focus on flooring materials that have special properties, ability to date the era of their use, or environmental concerns.

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Modern rebar is called deformed bar. In evaluating the probable age of a home when inspecting its foundation, we consider the foundation materials and style of workmanship. At first reinforcing steel was rationed, dating but pre-stressing strand was not. This book was written in and tells about cold twisted bar. There is also a way to pour a very thin layer first to coat the inside of the mold before the other filling.

If I find anything I'll let you know. That looks like decorative railing twisted steel, cs go not connected but none the less it could have been used as rebar. If it needs more feel free to do another layer.

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