Cutting Cinder Block For A Large Door Opening - Building & Construction - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Display Modes
Old 02-09-2008, 03:37 PM   #1
Join Date: Feb 2008
Location: VA
Posts: 1
Rewards Points: 10

Cutting cinder block for a large door opening

I am renovating a cinder block barn built in the early 1950's. I need to cut a 8' x 8' opening in the gable ends of the structure for a new doorway. From the ground to the ridge is about 16' feet. I am concered the block above the opening may fall before I can get a micro lam haeder in place. There is no way to temporarilly support the block. Anyone have any suggestions or should I be concered the block may give in? I thought about inserting the micro lam as I remove one block at a time, then remove the lower courses starting from the middle of the opening and place a temporary post in the middle and move further out with the post as I remove the perimeter courses.


joeyb is offline   Reply With Quote
Old 02-09-2008, 03:49 PM   #2
concretemasonry's Avatar
Join Date: Oct 2006
Location: Minneapolis/St. Paul, Minnesota - Latitude 45.057 Longitude -93.074
Posts: 4,082
Rewards Points: 2,654

If you are thinking of supporting masonry with a wood beam, you better hope you do not (or ever expect to) have to meet any kind of a code.

You never said how big or how high the walls are.

The best approach would be to use a steel beam that will not warp or deteriorate due to exposure if it is an exterior wall. I assume the gable wall carries little load outside of the masonry above and some roof load unless there are some second floor beams perpendicular to the wall that could increase the load.

Since this is a new opening, you can expect some movement/cracks unless you do a good job or supporting the wall and loads from above.

There methods that are commonly used for supporting masonry and associated loads, but they are not usually DIY projects since they take experience.


concretemasonry is offline   Reply With Quote
Old 02-10-2008, 12:00 PM   #3
Woodworker and Contractor
Kingfisher's Avatar
Join Date: Nov 2007
Location: Tampa FL
Posts: 224
Rewards Points: 150

Never use wood to hold concrete You need to install a new concrete lintel to do this right.
Kingfisher is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
FINISHING BASEMENT WALLS - Cinder Block Walls tmacwith Building & Construction 4 12-06-2012 08:26 AM
Leak in the cinder block foundation. 68MHJCs Building & Construction 7 01-25-2008 09:37 AM
Marrying a sloping stone wall to a cinder block wall. mrdol Landscaping & Lawn Care 1 11-09-2007 04:08 PM
Requirements for doorway in Brick and Cinder block sandyman720 Building & Construction 5 03-07-2007 09:48 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1