Discussion: View Thread

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

​You don't say what kind of clinker you are dealing with.  In my experience, clinker may or may not be chemically stable. One of my clients decided to pave a wharf area.  The site preparation included removing a cement klinker stockpile.  They left some of it behind thinking it would serve as a good base course for the asphalt pavement.  Only days after paving the area, the asphalt started to bubble up where the old stockpile had been located.  Cause of the pavement failure was determined to be hydration of the clinker.

------------------------------
Howard Thomas P.Eng, P.E., F.ASCE
Senior Technologist
Vancouver WA
------------------------------

Original Message:
Sent: 11-10-2017 01:58
From: Peter Singh
Subject: Wall tilting due to clinker weight

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

In my case it is horizontal component of clinkers load causing the 8'' thick rcc wall to tilt out!

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

Original Message:
Sent: 11-14-2017 01:23
From: Howard Thomas
Subject: Wall tilting due to clinker weight

​You don't say what kind of clinker you are dealing with.  In my experience, clinker may or may not be chemically stable. One of my clients decided to pave a wharf area.  The site preparation included removing a cement klinker stockpile.  They left some of it behind thinking it would serve as a good base course for the asphalt pavement.  Only days after paving the area, the asphalt started to bubble up where the old stockpile had been located.  Cause of the pavement failure was determined to be hydration of the clinker.

------------------------------
Howard Thomas P.Eng, P.E., F.ASCE
Senior Technologist
Vancouver WA

Original Message:
Sent: 11-10-2017 01:58
From: Peter Singh
Subject: Wall tilting due to clinker weight

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

Assume worst case lateral pressure as if it were a non-cohesive clean aggregate. You discussed the thickness of the wall but made no mention of what type of foundation you have. I'm guessing that may be your problem area.

------------------------------
Dewayne Heintz EI, A.M.ASCE
Project Manager
L.L. Pelling Company
North Liberty IA
------------------------------

Original Message:
Sent: 11-10-2017 01:58
From: Peter Singh
Subject: Wall tilting due to clinker weight

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

Thanks for your reply.
The foundation is 6' wide strip 8'' plus 10'' slope with 12''x15'' continuous beam at center. The wall originated from this beam, there is a tie beam at 7' height and the wall continues to a height of 12' above tie/ plinth.
hope this helps.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

Original Message:
Sent: 11-15-2017 07:46
From: Dewayne Heintz
Subject: Wall tilting due to clinker weight

Assume worst case lateral pressure as if it were a non-cohesive clean aggregate. You discussed the thickness of the wall but made no mention of what type of foundation you have. I'm guessing that may be your problem area.

------------------------------
Dewayne Heintz EI, A.M.ASCE
Project Manager
L.L. Pelling Company
North Liberty IA

Original Message:
Sent: 11-10-2017 01:58
From: Peter Singh
Subject: Wall tilting due to clinker weight

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

A sketch would be very helpful. Is there a way to share a cross-section?

------------------------------
Thomas Richards P.E., D.GE, M.ASCE
Chief Engineer
Nicholson Construction Co
Pittsburgh PA
------------------------------

Original Message:
Sent: 11-16-2017 02:39
From: Peter Singh
Subject: Wall tilting due to clinker weight

Thanks for your reply.
The foundation is 6' wide strip 8'' plus 10'' slope with 12''x15'' continuous beam at center. The wall originated from this beam, there is a tie beam at 7' height and the wall continues to a height of 12' above tie/ plinth.
hope this helps.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj

Original Message:
Sent: 11-15-2017 07:46
From: Dewayne Heintz
Subject: Wall tilting due to clinker weight

Assume worst case lateral pressure as if it were a non-cohesive clean aggregate. You discussed the thickness of the wall but made no mention of what type of foundation you have. I'm guessing that may be your problem area.

------------------------------
Dewayne Heintz EI, A.M.ASCE
Project Manager
L.L. Pelling Company
North Liberty IA

Original Message:
Sent: 11-10-2017 01:58
From: Peter Singh
Subject: Wall tilting due to clinker weight

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

Please find two photographs, one taken from south corner to show the extent of tilt, the shows the resulting curve increasing with height.
i'll also Post the foundation sketch some time today.
hope this will help to dig into the problem.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

Original Message:
Sent: 11-16-2017 16:42
From: Thomas Richards
Subject: Wall tilting due to clinker weight

A sketch would be very helpful. Is there a way to share a cross-section?

------------------------------
Thomas Richards P.E., D.GE, M.ASCE
Chief Engineer
Nicholson Construction Co
Pittsburgh PA

Original Message:
Sent: 11-16-2017 02:39
From: Peter Singh
Subject: Wall tilting due to clinker weight

Thanks for your reply.
The foundation is 6' wide strip 8'' plus 10'' slope with 12''x15'' continuous beam at center. The wall originated from this beam, there is a tie beam at 7' height and the wall continues to a height of 12' above tie/ plinth.
hope this helps.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj

Original Message:
Sent: 11-15-2017 07:46
From: Dewayne Heintz
Subject: Wall tilting due to clinker weight

Assume worst case lateral pressure as if it were a non-cohesive clean aggregate. You discussed the thickness of the wall but made no mention of what type of foundation you have. I'm guessing that may be your problem area.

------------------------------
Dewayne Heintz EI, A.M.ASCE
Project Manager
L.L. Pelling Company
North Liberty IA

Original Message:
Sent: 11-10-2017 01:58
From: Peter Singh
Subject: Wall tilting due to clinker weight

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

As per the photograph, wall is tilting inwards which is towards the clinkers. Kindly check if the foundation has settled or not.This case may occur due to differential settlement of soil below the foundation or due to failure of joint between wall and foundation.

------------------------------
Gurpreet Bhatia Aff.M.ASCE


------------------------------

Original Message:
Sent: 11-19-2017 21:42
From: Peter Singh
Subject: Wall tilting due to clinker weight

Please find two photographs, one taken from south corner to show the extent of tilt, the shows the resulting curve increasing with height.
i'll also Post the foundation sketch some time today.
hope this will help to dig into the problem.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj

Original Message:
Sent: 11-16-2017 16:42
From: Thomas Richards
Subject: Wall tilting due to clinker weight

A sketch would be very helpful. Is there a way to share a cross-section?

------------------------------
Thomas Richards P.E., D.GE, M.ASCE
Chief Engineer
Nicholson Construction Co
Pittsburgh PA

Original Message:
Sent: 11-16-2017 02:39
From: Peter Singh
Subject: Wall tilting due to clinker weight

Thanks for your reply.
The foundation is 6' wide strip 8'' plus 10'' slope with 12''x15'' continuous beam at center. The wall originated from this beam, there is a tie beam at 7' height and the wall continues to a height of 12' above tie/ plinth.
hope this helps.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj

Original Message:
Sent: 11-15-2017 07:46
From: Dewayne Heintz
Subject: Wall tilting due to clinker weight

Assume worst case lateral pressure as if it were a non-cohesive clean aggregate. You discussed the thickness of the wall but made no mention of what type of foundation you have. I'm guessing that may be your problem area.

------------------------------
Dewayne Heintz EI, A.M.ASCE
Project Manager
L.L. Pelling Company
North Liberty IA

Original Message:
Sent: 11-10-2017 01:58
From: Peter Singh
Subject: Wall tilting due to clinker weight

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

Thanks for your reply, but the wall is tilted outside, the clinker is clearly seen stored inside.
there is no settlement in the foundation so far!

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------

Original Message:
Sent: 11-21-2017 03:20
From: Gurpreet Bhatia
Subject: Wall tilting due to clinker weight

As per the photograph, wall is tilting inwards which is towards the clinkers. Kindly check if the foundation has settled or not.This case may occur due to differential settlement of soil below the foundation or due to failure of joint between wall and foundation.

------------------------------
Gurpreet Bhatia Aff.M.ASCE



Original Message:
Sent: 11-19-2017 21:42
From: Peter Singh
Subject: Wall tilting due to clinker weight

Please find two photographs, one taken from south corner to show the extent of tilt, the shows the resulting curve increasing with height.
i'll also Post the foundation sketch some time today.
hope this will help to dig into the problem.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj

Original Message:
Sent: 11-16-2017 16:42
From: Thomas Richards
Subject: Wall tilting due to clinker weight

A sketch would be very helpful. Is there a way to share a cross-section?

------------------------------
Thomas Richards P.E., D.GE, M.ASCE
Chief Engineer
Nicholson Construction Co
Pittsburgh PA

Original Message:
Sent: 11-16-2017 02:39
From: Peter Singh
Subject: Wall tilting due to clinker weight

Thanks for your reply.
The foundation is 6' wide strip 8'' plus 10'' slope with 12''x15'' continuous beam at center. The wall originated from this beam, there is a tie beam at 7' height and the wall continues to a height of 12' above tie/ plinth.
hope this helps.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj

Original Message:
Sent: 11-15-2017 07:46
From: Dewayne Heintz
Subject: Wall tilting due to clinker weight

Assume worst case lateral pressure as if it were a non-cohesive clean aggregate. You discussed the thickness of the wall but made no mention of what type of foundation you have. I'm guessing that may be your problem area.

------------------------------
Dewayne Heintz EI, A.M.ASCE
Project Manager
L.L. Pelling Company
North Liberty IA

Original Message:
Sent: 11-10-2017 01:58
From: Peter Singh
Subject: Wall tilting due to clinker weight

Hello friends,
Recently I have designed and provided construction supervision of a clinker storage shed. Two walls are designed to retain clinker and two are left open. The load bearing walls were designed as cantilever retaining walls with a height of 10', with supercharged load. The designed thickness of wall came to 15''! In order to have an economical design, I redesigned the wall as load bearing fixed panel 10'x10' in size and the thickness came to 8''! So suggested the client accordingly.
Now about a week ago clinker was stored in the shed and the wall was supporting the clinker about 12' in ht. As a result the wall has tilted out of vertical plane about 2'6'' at centre.
i need to understand the loading pattern of clinker in storage, vertical and horizontal components of its weight and it's affects on retaining walls.

------------------------------
Peter Singh M.ASCE
Managing Director
Kingdom Designers
Birganj
------------------------------