SECTION 202 — DEMOLITION OR PARTIAL DEMOLITION OF BUILDINGS AND OTHER STRUCTURES
202.1 DESCRIPTION —
This work is total or partial demolition of buildings or other structures, as indicated.
The following definitions apply:
(a) Total Demolition.
Total demolition and removal of indicated buildings and other structures located wholly within the right of way.
(b) Partial Demolition.
Partial demolition and removal of indicated buildings or other structures located partly within the right of way. Only the portion within the right of way is demolished and removed, unless the owner of the remaining portion requests and authorizes total demolition in writing.
(c) Refinishing Party Walls.
Demolition of an indicated building or other structure to the party wall which separates it from another building or structure outside the right of way. The exposed portion of the party wall, including the party wall foundation, is refinished as specified.
202.2 MATERIAL —
(a) Cement, Type IS, IP, or II.
(b) Fine Aggregate, Type
A. Section 703.1
(e) Emulsified Asphalt, Class E-1 or E-2.
(f) Caulking Compound.
(g) Other Material.
Certify as specified in Section 106.03(b)3.
Metal Mesh Lath, 3.4 psy — FSS QQ-L-101a
Roofing Material, 65 lb. per roll — ASTM-D224
Insulating Board — ASTM-C578, Types I and II, Grades 2 and 3
Asphalt Mastic — FSS SS-C-153
202.3 CONSTRUCTION —
Confine movements and operations to the existing right of way limits. Do not deposit construction material, junk, debris, or rubbish on private property or enter private property without first obtaining the written consent of the property owner or owners, and fling a copy of the consent with the Department.
The Department will endeavor to obtain the vacation of all buildings or structures to be demolished as expeditiously as possible. The Department does not guarantee that all facilities will be vacated and available in sufficient time to permit systematic operations.
The Department does not assume responsibility for the condition of the various buildings or loss of fixtures, equipment, material, or other objects between submittal of the proposal and actual possession of the buildings.
Remove and satisfactorily dispose of material taken from within the project limits as well as debris and rubbish, except items of personal property belonging to owners or tenants and material required for backfilling. Remove material from the project limits as it accumulates. Conduct no sale of material while within the project limits.
(b) Safely Regulations.
Furnish, erect, and maintain barricades, steady burn lights, flashing warning lights, and warning and "Keep Out" signs where the placing of such protective devices is warranted, or as directed by the Engineer.
Provide, erect, light, and maintain suitable footway shelter platforms, as required by law or as directed.
Satisfactorily prevent or control dust resulting from demolition.
Comply with the National Emission Standard for Asbestos, as contained in the Federal Register, Vol. 38, No. 66.
(c) Utility Disconnections.
Prior to starting work make arrangements with the proper authorities for turning off and disconnecting utilities in connection with demolition operations. Perform the work in accordance with local requirements.
When only a portion of an occupied building is to be demolished, conduct demolition and related operations without interrupting utility service to the remaining portion of the building.
Where it is necessary to reconnect facilities to the undemolished portion of the building, make permanent reconnections.
Pay all expenses resulting from this incidental work including fees to utility companies or other agencies.
Before beginning demolition, pump out and clean all wells, cesspools, and outbuildings, within the areas to be cleared, in a sanitary manner. Disinfect all such structures as required by the appropriate health authorities, then backfill to the adjacent ground level.
Do not interfere with functioning wells, cisterns, cesspools, or other ground openings outside the condemned area. Securely and permanently cap well casings. Cut off and cap pipes leading into or out of wells.
Where the uncondemned portion of a property has been abandoned, satisfactorily cover, backfill, or treat wells and other openings located thereon which constitute a hazard or dangerous condition. Before proceeding with this work, obtain the consent of the owner or owners in writing.
Leave contiguous buildings in a safe condition. Do not deface, mar, or jeopardize them. Satisfactorily repair damage or restore them.
Remove existing fences and guide rail posts, unless otherwise directed. Do not disturb existing curbs, sidewalks, and street paving unless it becomes necessary to do so in order to complete other work.
Do not use a swinging ball immediately adjacent to any public thoroughfare or in any area where its use may create a public hazard.
Do not, under any circumstances, set fire to structures. Burning of debris will not be allowed except by written permission of local police or fire authorities and unless the burning conforms with State Air Pollution Control Commission regulations. Do not begin burning until a copy of the written permission is received by the Department.
No method of demolition will be permitted that does not ensure the work being strictly confined within the limits of the demolition area without hazard to adjacent properties or to the public.
Chimneys, common to adjacent properties, are not to be demolished. Do not disturb these chimneys other than to give them support as necessary for continued stability. If necessary, repoint and cap as directed.
Restrict demolition to horizontal operations, one floor of each structure at a time. Progressively demolish a structure or structures, except for the stripping of fixtures, from top to bottom, one floor at a time. Bay or sectional-type demolition will be considered, provided a detailed plan, including the building's structural framework, is submitted and accepted prior to the work. Progressively demolish bay or sectional-type structures from top to bottom as well. Completely demolish each bay or section before starting operations on any adjacent bay or section. Remove each bay or section in a manner that maintains the integrity and proper support of adjacent bays or sections.
Where a portion of a building is to be demolished, adequately shore, brace, and support the remaining part to satisfactorily maintain the integrity of all remaining walls, floors, and roofs and their supporting members. Construct all shoring, bracing, and supports to be outside the right of way. Tightly board up and seal the remaining portion of a partially demolished building along the right of way line. Construct the new closure and connections to the remaining portion of the building in a satisfactory manner and make them weatherproof. Provide a closure of adequately braced lumber studding placed not more than 16 inches apart, with plywood or equal facing, without holes, tightly and securely nailed to the studding. Cover the plywood facing with two layers of smooth finished roofing material. Overlap the roofing material by not less than 4 inches.
Where demolition involves severance through a cellar or other subsurface opening, immediately erect an 18-inch thick cement masonry wall adjacent to and wholly outside the right of way. Provide a wall extending from 18 inches below the existing cellar floor to the elevation of the top of adjacent cellar walls. Satisfactorily and integrally connect the new wall to the existing adjacent walls.
Carefully and gradually demolish wall portions above the first floor which are located immediately adjacent to and parallel to any street. Remove walls and foundations, except party walls required to remain, to an elevation 4 feet below the adjacent sidewalk elevation. Clear all partition walls and columns of any nature, in cellars or in other subsurface openings, to their floor elevations.
Fill in and repair holes, breaks, or depressions in remaining walls with suitable brick and cement mortar. Satisfactorily rough cast repaired areas with cement mortar so that they are left in a safe and weatherproof condition.
Remove floor construction above cellars. Remove basement partitions, furnaces, heating apparatus, piping, gasoline or oil tanks, miscellaneous fixtures, and stairways from the demolition area.
(e) Refinishing Party Walls.
Where indicated or directed, cap party walls and restore by insulating and plastering to an acceptable finish. Before work, thoroughly clean the party wall of old plaster, sand, and dirt. When directed, rake pit joints in the brick work to a minimum depth of 1/4-inch. Water joints, and repoint while damp.
1. Insulating Coating.
If the wall has an average thickness of less than 6 inches, apply an insulating coating as follows:
Evenly spread a heavy coating of cold asphalt mastic over the entire wall surface.
Fit, press in place, and securely bond insulating boards (1 inch x 2-foot x 8-foot stock) to the asphalt mastic.
Caulk joints between the insulating boards with emulsified asphalt or caulking compound to obtain a uniform and finished appearance.
2. Cement Plaster Coating.
2.a Metal Mesh Lath.
Place metal mesh lath against the insulating coating and securely attach with acceptable devices.
If an insulating coating is not required, securely attach the metal mesh lath directly to the wall, using acceptable devices penetrating the mortar and not the brick. Satisfactorily repair damage to the mortar bond or interior of the wall.
2.b Cement Plaster.
Do not plaster until the preceding operations have been inspected and accepted. Do not plaster when the outside air temperature is below 45F. Extend the plaster from the roof line or wall top to the established ground line, or as directed. Provide a total thickness of finished plaster not less than 7/8-inch.
Mix plaster in a suitable mixer with sufficient water to obtain a plastic composition. Proportion the mix as follows:
Scratch and Brown Coats
Cement — 1 bag
Lime — 1 bag
Natural Sand — 5 cu. ft.
Cement — 1 bag
Lime — 1 bag
Natural Sand — 6 cu. ft.
Immediately before scratch coat application, wet the wall surface evenly but do not saturate. Apply a 3/8-inch scratch coat, heavily cross-hatched to integrate with the metal mesh lath.
After the scratch coat dries thoroughly, again, wet the wall surface evenly but do not saturate, and apply a 3/8-inch brown coat.
After the brown coat dries thoroughly, again, wet the wall surface evenly but do not saturate, and apply a 1/8-inch finish coat. Provide color and finish type as directed.
Protect each coat of plaster from sun and wind to prevent rapid drying. Keep each coat moist by sprinkling for at least 3 days after application or as directed. Allow each coat to dry thoroughly before placing the succeeding coat.
Upon completion of the plastering, install suitable matching wood trim along the border of the roof. Paint new wood trim to conform to the trim color of the remainder of the structure or as directed.
Backfill subsurface areas as specified in Section 206.3 and as follows:
Before starting backfilling operations, submit the method of backfill and compaction for review and acceptance.
Furnish additional embankment material for backfilling subsurface areas. Have the quality, nature, and source of any additional embankment material accepted before use. Do not use unsuitable or unstable material in the backfill. Satisfactorily store material encountered in the demolition, which is suitable for backfill, until the walls are down.
Carefully backfill cellars and other subsurface spaces, and grade to the adjacent ground level or as directed.
Backfill and grade to ensure proper drainage. Prior to placing the first layer of backfill, break-up existing cellar floors and other surfaced areas to ensure adequate subsurface drainage.
Clean party wall foundations against which backfill material is to be placed, point brick or block walls with mortar, and waterproof with two coats of emulsified asphalt.
(g) Treatment of Disturbed Areas.
Treat disturbed areas resulting from demolition with seeding and soil supplements as specified in Section 804. Use a seeding type as indicated or directed. When directed, mulch as specified in Section 805.
202.4 MEASUREMENT AND PAYMENT —
If a structure is set afire, the amount bid for this item will be deducted from the total amount due.
(b) Refinishing Party Walls.
Most Current Supplement
BACK TO TABLE OF CONTENTS