"In the course of this module the learner will learn the purpose and content of a demolition drawing which is generally a unique component of a set of technical drawings which document changes or additions to an existing building."

1.   Purpose of Demolition Drawing(s)

Technical drawings are produced for a number of reasons:
	1.  for the purpose of applying for a building permit.
	2.  to outline the scope of a project for pricing by competing contractors during the Tendering Phase of a project.
	3.  part of the Contract Documents which outline the scope of the project within a legal contract between Contractor and Owner....and
	4.  technical drawings to direct the General Contractor in the execution of the "Work".
A demolition drawing therefore has these same applications.
	1. to let a municipality know what is to be demolished
	2. to clearly show how much material has to be removed from a site or building being redeveloped
	3.  to document how much material has to be trucked away or recycled (and what KIND of material.
	4.  to clearly show the demolition subcontractor or General Contractor what is to be removed from the site.

 

 

2.  Large scope demolitions...

 

	1.  Consider a drawing sheet to specifically show what is to be removed.
	2.  More important for "selective demolition" that the removal of a complete building or portion of a building.
	3.  A selective demolition will generally be clarified in a section of the specification:  Section 02060 Selective demolition.
It is useful to let a Contractor know what kind of material he is removing, for example
	"remove indicated length of 8" CMU masonry wall"
	"remove wood stair structure"
The contractor doesn't have to count the number of blocks to be removed, but he will be pricing demolition on the type of material (whether "clean fill" or otherwise) and the number of truckloads or bins of each.
Sometimes an elevational view is useful in lieu of a plan OR IN ADDITION to a plan.
Warning:   There is a tendency to want to provide instructions as to what happens AFTER demolition of a part of a wall, floor, etc.  Example:  "Remove window and fill opening with wall to match adjacent wall system".  DON'T DO THIS.  ALL REMEDIAL WORK IS TO BE ON THE ARCHITECTURAL DRAWINGS....floor plans, elevations, or where-ever this work would normally be delineated.

 

 

 

 

3.   Removal of a complete building from site

 

	1.  If a complete structure or a wing of an existing building is to be removed, this can generally be indicated on the site plan rather than floor plans.
	2.  Again, it is useful to indicate the type of structure, although a bidding contractor would make it his business to investigate the removal fully, before pricing it.

 

 

 

 

 

4.   Removal of a few selected elements

 

Sometimes the minimal amount of building to be demolished doesn't warrant a unique drawing.  In this case the elements to be removed can SOMETIMES be indicated on the architectural plans.

 

 

5.   Demolition or Selective Demolition Specification

 

Sometimes the minimal amount of building to be demolished doesn't warrant a unique drawing.  In this case the elements to be removed can SOMETIMES be indicated on the architectural plans.
	1.  Needs to be supplemented by a "Hazardous Materials Report" to assure the health and safety of the workers.
	2.  Appropriate hording often has to be in place in order to protect the general public.
	3.  Any material to be retained by the Owner or to be reused by the Contractor for the new construction needs to be clearly identified so that it does not end up in a land-fill.
	4. Any findings of an archival nature, that is old coins, photographs, newspapers, etc. are usually called (in the spec) to be turned over to the Owners.

 

 

 

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