ACAD_Rehab_Ext_Masonry_Historic_Rockefeller_Bldg_-_30_Jun_14_-_representative_photos.pdf

ACAD Rehab Rockefeller Building: cons t ruc t ion de ta i l s 06/30/14 [Refer to Conditions Assessment w/ Recommendations for Treatment]

KEY: image # / page #

1/01 NORTH EAST VIEW of WEST ELEVATION 2/01 SOUTH EAST VIEW of WEST [Ref.] ELEVATION

3/01 S. ELEV. of N. WING [west end] 4/01 NORTH ELEVATION of SOUTH WING [west end of wing]

5/01 WEST ELEVATION of NORTH WING 6/01 NORTHEAST VIEW of WEST ELEVATION

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CGilley Text Box PHOTOS ON PAGES 1-42 ARE REPRESENTATIVE OF WORK BUT NOT EXHAUSTIVE AND DO NOT REPRESENT ENTIRE SCOPE. DRAWINGS AND SPECIFCATIONS GOVERN.

1/02 NORTH ELEVATION of NORTH WING

2/02 SOUTH ELEVATION of SOUTH WING

3/02 NORTH ELEVATION of S. WING [east side] 4/02 S. ELEVATION of N. WING [east side]

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1/03 EAST ELEVATION [ with Terrace over Garage]

2/03 EAST ELEVATION of SOUTH WING 3/03 EAST ELEVATION of NORTH WING

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1/04 Chimney @ flat roof section 2/04 Chimney (south chimney w/ single clay pot)

3/04 Sloping concrete wash (n. chimney) 4/04 Crack in clay pot (n. chimney w/ two pots)

Cracks previously documented Parging applied in [2012]

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1/05 Copper counter flashing @ chimney 2/05 EPDM base flashing/ patching

@ chimney counter-flashing

3/05 Flat roof section @ location of chimneys [both ends of main building]

4/05 EPDM flat roof (replacing copper) adhered to sloping clay tile roof of main block

Bottom row of clay tiles replaced w/ copper clips during installation of the EPDM flat roof

Flat roof [adhered EPDM]

Ridge tiles @ flat roof edge

Tabs adhered to clay ridge tiles and EPDM membrane

Copper counter-flashing strip @ top of upturned EPDM [sloping roof surface]

Copper holding clips @ bottom row of roof tiles above flashing re-installed during installation EPDM

Sealant @ juncture of EPDM & clay tile roof

Replaced roof tiles w/ copper holding clips

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1/06 Top of chimney in Attic (evidence of water penetration on brick / corrosion of painted steel roof framing)

2/06 Chimney in Attic (@ north wing)

Formed sheet metal catch pan @ circumference of chimney

“Nailcrete” (nail-able concrete roof deck)

Painted steel roof framing member

Efflorescence & evidence of previous roof leaks (and/or current penetration of water from the chimney intersection to the flat roof)

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1/07 Biological growth on west side of central block

2/07 Biological growth differential on west 3/07 Biological growth on w. elevation, looking north elevation roof between sloping section of main roof to roof section below flat roof section [@ chimney locations (2)]

Flat roof beyond

Demarcation between main roof w/ heavy biological growth & sloping roof on either side of the flat roofs

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1/08 Vent pipes on west side (leaching of copper 2/08 [See 1/08] reduces biological growth in path of run-off)

3/08 Vent pipes on the e. side of the roof (more 4/08 [See 3/08] exposed to direct sunlight -reducing the amount of biological growth compared to the west sides)

Replacement tiles w/ copper tabs

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1/09 Half round copper gutter w/ transition to 2/09 Restricted downspout rectangular down spout @ ground drain

3/09 Downspouts from roof to interior drains thru Terrace & Garage below/ Copper counter-flashing @ masonry wall over EPDM base flashing and membrane (below concrete paving)

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1/10 Roof drain @ Terrace connected to drain pipe 2/10 [See 1/10] thru Garage (to underground location)

3/10 & 4/10 Copper counter-flashing over base flashing of EPDM membrane below Terrace concrete pavers (set over stone ballast). Various sealant applications along juncture bet/ counter-flashing & masonry.

5/10 Underside of Terrace / garage concrete ceiling w/ roof drain 6/10 Round downspout to from Terrace to below Garage concrete floor drain @ Terrace

Detached sealant between counter-flashing & masonry

Corrosion of steel drain pipe @ concrete Garage ceiling

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1/11 Tapered hip/ridge tiles [12 in. exposure] 2/11 Underside of typ. ridge tile

3/11 Tapered clay ridge tiles

4/11 Red-tinted mortar @ ridge tile

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1/12 Hip tiles

2/12 North pavilion [north-west corner]

3/12 Ridge at flat roof [central block, w. side]

Partly dislodged starter hip tile

Missing hip tile

Partly detached hip tile

Dislodged hip tile

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1/13 Central block [north end of west side]

2/13 Main roof

Partially exposed metal flashing below ridge tiles

Fractured tile

Displaced tile out-of-plane w/ field

Partly detached tiles

Asphaltic droppings on field tiles

Asphaltic drips on field tiles

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1/14 Hip tiles 2/14 Tiles at hip-to-edge of flat roof

3/14 Hip roof [s. end of central core] 4/14 Cement under hip tile

Special hip starter tile

Hip tiles missing (2) w/ wood stringer

Hip tiles missing (2) w/ wood stringer & mortared setting bed

Concrete setting bed (tiles missing)

Copper flashing cap under ridge tiles

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1/15 Roof tiles 2/15 Roof tiles

3/15 [See 4/15] 4/15 Dimensions of clay roof tiles: 8 in. wide x 8 in. exposure

(minor spotted areas of biological growth)

5/15 Tile starter course @ eaves 6/15 Asphaltic material on exposed tile surface

Example of cracked / broken roof tile exposed to weather

Example of metal tile clip deformed from tile movement

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1/16 Clay tiles @ main field of roof surface

2/16 Patched tile / debris collected bottom of gutter

Displaced tile w/ retaining clip missing

Deformed tile retaining clip (from ice/snow load)

Cracked tile over starter course open to weather

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1/17 Valley between s/ wing roof & sloping section adjacent to flat roof

2/17 Valley w/ uneven mitering of tiles. 3/17 Valley below flat roof edge [Flashing condition @ valley

Unknown]

Replaced roof tiles

EPDM flashing of flat roof to copper flashing of last tile course above

Metal flashing under ridge tiles

Roof tile clips for replaced tiles

Ridge tiles used for edge of flat roof (end of tile open to weather)

Metal flashing under ridge tiles

Poor fitment of tiles @ valley (risk of ice lodging in open area & damage to tiles)

Displaced roof tile

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1/18 Clay gable end cap 2/18

3/18 Gable @ w elevation (n. side) 4/18 Gable @ w/ elevation (s. side)

Cracked rake tiles @ gable end

(s. gable, w/ side )

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1/19 Center bay of west elevation @ cntral block

2/19 Missing rake tile @ gable end

Continuous copper flashing strip @ transition from main roof to bay roof

Missing rake tile w/ lower tile cracked w/ detached piece unsupported by nailing section

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1/20 Missing rake tile @ gable end

2/20 Bottom of gable end roof (n. side)

Missing rake tile [see above]

Displaced starter course / copper clip @ tile above [unknown end of gutter condition]

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1/21 Bottom of gable end roof (s. side)

2/21 Bottom of gable end roof (n. side)

Exposed copper flashing where rake tile is missing

Area potentially open to weather

Missing starter course tile / unknown condition regarding open to weather

Displaced starter course tile

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1/22 Dividing insert in gutter (approx. in center 2/22 Debris trapped where gutter section slopes of section(s)) towards center-dividing insert

3/22 Gutter width approx. 6 in.

Gutter divider

Debris collected due to negative slope towards gutter divider

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1/23 Gutter / roof section between gable & central bay roof [east elevation]

2/23 Top edge of bay roof w/ copper flashing strip @ roof transition

Holes in roof transition flashing (erosion from water dripping from the tiles above)

Missing starter course tiles

Displaced starter course tiles

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1/24 Potentially open joints @ mitered Corner of wood trim

2/24 Wood trim @ top of masonry wall 3/24 Gap between back of gutter & wood trim

Gap @ miter joint of upper pecky cypress top board

Gap @ back of gutter

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1/25 Separation of joint sealant between mortar & wood

2/25 Separation of sealant between wood framing elements

Detached sealant @ pecky cypress joints & between cypress framing – masonry j i

Detached sealant @ pecky cypress joints & between cypress framing – masonry j i

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1/26 Sealant in passages of pecky cypress in wood framing elements

2/26 Sealant joint failure at wood-to-brick joint 3/26 [See 2/26]

Detachment / failure of sealant joint

Sealant detached from partial application to passages of pecky cypress

Notch cut into pecky cypress to receive flashing @ window heads

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1/27 Window sill & pecky cypress w/ deep passages (w/ the potential to allow water to penetrate the wall cavity &/or interior wall surfaces)

2/27 Roof canopy bracket [over n. entrance of w. elevation]

Detached sealant between cypress framing

– masonry mortar joint

Cracked / displaced starter course tile

Biological growth on door canopy bracket [facing west]

Debris / biological growth collected between sidewall flashing & bottom of adjacent tile

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1/28 Thru hole from pecky cypress @ wood bracket 2/28 Bracket @ cross gable

(looking upwards through the bracket)

3/28 Looking down @ pecky cypress vertical member 4/28 Top of bracket deteriorated & open w/ numerous possible paths of water ingress/

Through passage in pecky cypress @ bracket

Possible open passage(s) in pecky cypress @ bracket & framing

Approx. location of open passage in pecky cypress @ bracket (from view in 1/28)

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1/29 Pecky cypress window frame

2/29 Pecky cypress window frame

Detached sealant between cypress framing

– masonry mortar joint

Sealant applied between mortar joint & wood framing element

Detached sealant between cypress framing

– masonry mortar joint

Sealant campaign using grey sealant post white sealant application

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1/30 Detached sealant example

2/30 Detached sealant bead & bond breaker tape

3/30 Test area where mortar was removed from joint masonry to determine configuration & dimension of typ. joint

Detached sealant between cypress framing – masonry mortar joint

Sample of removed sealant joint material & backer tape

Mortar joint width approx. ½ in.

Outer wall width:

approx. 4 in.

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1/31 Pecky cypress window frame

2/31 Pecky cypress window frame

Detached sealant between cypress framing – masonry mortar joint

Detached sealant between cypress framing

– masonry mortar joint

Sealant campaign using grey sealant post white sealant application

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1/32 Pecky cypress window frame

2/32 Pecky cypress window frame

Sealant campaign using grey sealant post white sealant application

Detached sealant between cypress framing

– masonry mortar joint

Detached sealant between cypress framing

– masonry mortar joint

Split in sill window frame element

Detached sealant between cypress framing

– masonry mortar joint

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1/33 Pecky cypress window sill

2/33 Pecky cypress window sill

3/33 Pecky cypress window sill

Split in sill window frame element (wood peg is a an original decorative element)

Sealant campaign using grey sealant post white sealant application

Sealant application using grey sealant post white sealant application

Detached sealant between cypress framing

– masonry mortar joint

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1/34 Detached sealant @ wood frame w/ inconsistent application over flashing strip

2/34 Copper flashing strip on horizontal wood members

Flashing reglet cut into vertical wood frame member to receive end of flashing

Sealant detached from wood frame

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1/35 Brick panels @ 2nd story [w/ mortar joints / sealant joints]

2/35 Window sill @ 2nd story (typ.)

Mortar joint

Sealant joint

Protruding wood pegs are an original design feature [replacement pegs shall match dimension of original]

Sealant joint

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1 / 36 cracking in wood window frame [n. elevation of the s. wing, e. side]

2/36 Structural cracking (break) in vertical wood frame members

Crack / break (@ 3 locations in vertical wood framing)

Horiz. crack / break [depth undetermined]

Vert. crack / break [depth undetermined]

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1/37 thru 3/37 Details of intentionally out-of-plane &/or angled bricks in panels below

4/37 Brick patern as character-defining features

Bricks out of plane / angled

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1/38 Wood (pecky cypress) lintel @ ground floor 2/38 [See 1/38] windows / vents w/ inconsistent sealant application @ flashing

3/38 Wood lintels in lower window openings

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1/39 Brick piers & wood lintels @ garage doors

2/39 Brick piers & wood lintels @ garage doors

3/39 Brick piers & wood lintels @ garage doors

Weep holes (not installed consistently @ all brick piers)

Splitting / checking @ end of lintel

Copper flashing @ lintel bearing surface

Flashing between wood & masonry elements

Copper flashing @ header bearing surface

Flashing between top of lintel & masonry

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1/40 Ext. light @ e. elevation of s. wing

2/40 Electrical conduit entrance

@ e. elevation of s. wing

3/40 Electrical conduit entrance

@ e. elevation of s. wing

Unsealed passage of electrical conduit as possible source of water entry

Possible source of water entry (staining in area as observed by staff)

Possible source of water entry

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1/41 Disintegration of factory-applied 2/41 Post base cap in place coating @ post cap

3/41 Biological growth @ open joint of aluminum 4/41 Corrosion @ post base accelerated by post set in stone wall cap missing base cap & joint open to water penetration

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1/42 Wood window frame & 2/42 Out-lined areas of saturated water from overflow sill saturated w/ water of gutters in front and/or behind/

3/42 [ See 4/42 ] 4/42 Out-lined areas of saturated water from overflow of gutters in front &/or behind

Fully saturated brick panel

See 2/27

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