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Pad Stones

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EPP_Aidan

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Discussion starter · #1 ·
Hello, I am from the UK and was wondering what you call Pad Stones. (Hopefully I am in the correct section)

A Padstone is the first and last brick or stone of an Arch, seated on the Spring Line, they are also known as a stone or a robust block which is laid under the end of a beam or a steel joist, to help distribute the load.

Thanks for the help.
 
#12 ·
I don't know if we have a special name for that CMU :) I would just call it the point at which the beam is bearing on the wall.

Sometimes that CMU will be reinforced and a steel "bearing plate" will be installed.
Dave
 
#13 ·
Padstone works.
Whether brick, concrete, stone or CMU, solid or filled hollow or even an anchored steel plate.
(Although, I might not call the actual steel plate a stone.)

Or

Impost.
When referring to the top stone on a column, pillar, pier or wall that will be supporting an arch.

D.
 
#14 ·
Does not look like a block to me. It looks like someone fudged up the bearing height for that piece of steel. To fix it they nailed a piece of wood to the face of the wall and filled it with concrete to the correct bearing height.
 
#15 ·
A padstone in the UK is a solid concrete block designed to go under a steel beam to take the point loading and spread it to the masonry walls below it.
The first and last bricks on an arch are the springers as stated by stonecutter.
The concrete blocks in the photo are probably 4 inches thick, so a padstone would be needed under the RSJ(rolled steel joist) which I think is probably called an I beam in the USA.
 
#16 ·
stuart45 said:
A padstone in the UK is a solid concrete block designed to go under a steel beam to take the point loading and spread it to the masonry walls below it.
The first and last bricks on an arch are the springers as stated by stonecutter.
The concrete blocks in the photo are probably 4 inches thick, so a padstone would be needed under the RSJ(rolled steel joist) which I think is probably called an I beam in the USA.
Click to expand...



You are correct..in the US (RSJ) is refered to as an I-beam.
 
#18 ·
stuart 45 said:
A padstone in the UK is a solid concrete block designed to go under a steel beam to take the point loading and spread it to the masonry walls below it.
Click to expand...
Agreed, and the answer to the original query.


The first and last bricks on an arch are the springers as stated by stonecutter.
Click to expand...
This is true, but, they are considered, part of the arch.
Below the spring line, at the top of the column, pillar, pier, or wall, lies the impost.
Serving the same function as a padstone, distributing the weight of the beam, bar joist, lintel, etc., the impost is a larger stone, or what have you, that distributes the weight of the arch and all that goes with it, built on the top of this stone.

I hope this makes sense.
One day I will learn how to attach diagrams.

But, for now,
D.
 
#20 ·
EPP_Aidan said:
So what is that little brick called which we call pad stones?
Is it an I-Beam or a springer?
Click to expand...
The I-beam is the steel.

I guess you could call the small stones springers if you consider the I-beam to be a flat (jack)arch support, which are usually over a window or doorway...but jack arches are typically a masonry arch and not a steel I-beam.

From the picture it looks like additional height was needed to bring the solid block up to the correct level so the smaller units did the job. Unless this is the way it is done over there, I dont know. The supports that I have done and have seen over here have been solid units up to the RSJ(I-BEAM).
 
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