Field Report Thursday June 26, 2008 Lateral Force Resistance

Thursday June 26, 2008

Mid 80's F during day, low 70's overnight, no rain but forecast chance of evening thunderstorms next 5 days.

Colin Dawson RA architect and Dan Thomer Project Manager meet on site and discussed the structure lateral force resisitance system;

Additional diagonal strap ties to be added;

2nd floor stair walls,

2nd floor front bedroom common wall,

2nd floor bathroom/closet wall,

1st floor living room/bathroom wall (previously done)

1st floor kitchen/bathroom wall

Epoxy anchor bolts to be added;

1st floor front and rear wall to masonry wall,

2nd floor front and rear wall to masonry wall,

Main roof rake rafter to masonry wall,

Garage roof rake rafter to masonry wall.

Inspected galvanized masonry strap ties, masonry to framing and rafter at each stud and rafter at every 3rd or 4th course.

The masonry wall is fully restrained at 1st floor slab, 2nd floor ledger, and will be fully restrained at corners and rafter with epoxy anchor bolts.

No additional work beyond this report is requested for the masonry wall.

Reviewed and approved on site wall lap siding and shingle siding, and front gable louver.

Todays progress;

Lot 1 through lot 7;

Lot 2, 3 & 4, 2nd floor framing complete,

Lot 1 2nd floor framimg in progress,

Lot 20 through 26;

Roof shingles complete except lot 26 garage (material on site)

Lot 20, 21, 22 & 23, rough plumbing, rough duct and rough electric in progress

Lot 7 through 1, 4th Street rear

Lot 26 through 20, 3rd Street front

Field Report Tuesday June 24, 2008

Tuesday June 24, 2008.
Low 8o's F, 60's F overnight, 80's to 90's forecast for the week with possibility of thunderstorms.

Lot 20 through 26;
Roof shingles in progress,
Interior Sanitary plumbing commenced lot 20,
Ductwork material for 20 through 26 of loading in progress,
Electric device boxes installation 20 through 26 in progress,

Lots 1 through 7
1st floor framing complete
2nd floor framing in progress.

3rd Street at Jeffery Street

Jeffery Street at 4th Street

4th Street at Jeffery Street

Yarnall Street at 4th Street

4th Street and Union Street rear at Yarnall Street

Union Street at Yarnall Street

3rd Street and Union Street rear at Yarnall Street

3rd Street at Yarnall Street

Lot 26 roof material loading

Lot 26 2nd floor electric device boxes

Lot 26 interior sanitary plumbing in progress

Lot 24 garage roof shingles, and step flashing

Lot 24 attic access hatch framing

Lot 24 stair and electric device boxes

Lot 25 roof shingle in progress

Field Report Thursday June 19, 2008

June 19, 2008. Low 80's during day, 60's overnight.
Forecast 80's next 5 days, rain Saturday night through Sunday morning, and occasional shower next week.

Lot 1 party wall rebuild

Lot 2 1st floor framing in progressLot 3 1st floor framing in progress

Lot 4 1st floor framing in progress

Lot 5 termite shield installation in progress

Lot 6

Lot 7

Field Report June 19, 2008 Building Structural System

Building structural system;

The lateral force resistance for the structure is composed of three primary elements;

Vertical reinforcing in the masonry walls.

Exterior wall shear panels.

Floor and roof panels.

The masonry vertical reinforcing is suspect, see previous wall collapse report.

Exterior shear wall panels must have installed the Simpson strap ties spanning the 2nd floor rim joist, and epoxy anchor bolts to the masonry wall as shown on the framing drawing 2/S1.

The 2nd floor panel must be fully connected with epoxy anchor bolts to the masonry wall, check to confirm all bolts are secure and will not pull out, the triple joist stair well header must be through bolted or lag bolted and provided with a top hung joist hanger with flange nailing to the 2x10 ledger, and all multiple joists must have top hung joist hangers as shown on S1.

The roof truss rake rafter and bottom cord must be epoxy anchor bolted to the masonry wall, including garage roof truss as shown on S1.

All truss to wall plate hurricane ties must be installed and fully nailed as shown on S1.

Not shown on the permit approved set, but will help me sleep at night; add a strap brace to the 2nd floor bathroom walls at the masonry wall and provide (2) epoxy anchor bolts to the bathroom wall panels and the masonry wall.

Site super to advise when the above items are complete on lots 20 through 26 and I will do an inspection report, then follow with 14 through 19, 8 through 13, and 1 through 7, or a sequence that make sense for production.

Stair well opening, use top hung joist hanger at multiple joists.

Stair well triple header at party wall, through or lag bolt triple joist and use top hung joist hanger at ledger with face nail flanges.Non-typical triple joist condition, solid block space with adjacent close spaced joist and through bolt, top hung joist hanger to ledger.

Field Report Wednesday June 18, 2008 Wall Collapse

June 18, 2008 Lot 1 to lot 2 party wall collapsed. Report delayed to confirm details;

Extended reach forklift operator reported during delivery of a full pallet of 1st floor wall panels to lot 1, one wheel of the forklift settled on a soft patch of soil tipping the load and striking the masonry partywall.
Operator will split loads to at least half pallet for the balance of the project, and halt equipment if any personnel are in the tilt zone of the fork lift.

The wall collapse with failure above the 2nd course, revealed that the vertical rebar stopped in the 2nd course above slab, this rebar was fully grouted. Rebar above the second course was not run into the block course below with rebar and some of the rebar in the wall was clean of grout.


On June 19, 2008 the mason rebuilt the wall.

Options for inspecting the other party walls;

Destructive;
Open 3 or 4 sections of wall on each building to inspect rebar locations and grout fill, this could expand to more locations if rebar and grout is not adequate, then rebuild.

Non-destructive;
MTI can image wall densities to show masonry, grout and rebar. If rebar and grout is inadequate then rebuild. Ambric may also have the equipment for this.

Belt and suspenders;
Assume grout and rebar is inadequate (confirm with some random wall openings or random imaging); bolt steel channel C 3x5 (3" x 1-1/2" x 1/4" thick) at 48" o.c., vertically to the wall exterior including garage, from slab to roof and spanning the bond beam at 2nd floor, with 3/8" dia galvanized through bolts at 32" o.c., with transom washers on the interior face. Furr the exterior for siding with 2x4's same depth as the channel.
Chester L&I may require a P.E. to review.
Lot 1 to 2 partywall collapse June 18,2008

Lot 1 to 2 party wall collapse June 18, 2008

Lot 1 to 2 party wall collapse June 18, 2008
Lot 1 to 2 party wall collapse rebuild, June 19, 2008

Field Report Wednesday June 18, 2008

Wednesday 18, 2008
Mid 70's F daytime high, 50's F and 60's F at night, evening thunderstorms over past few days.
High 70's F and low 80's F forecast through to early next week with chance of thunderstorms.

Lots 14 through 19 front gable complete

Lot 18 to lot 19 masonry party wall in progress

Lot 7 kitchen slab pour in progress

Lot 6 house slab complete

Lot 5 house slab complete

Field Report Friday June 13, 2008

Friday June 13, 2008
High 80's F during day, 70's F overnight.
Evening thunder storms forecast for Saturday through Monday.

Lots 29 through 26 masonry party wall to roof sheathing complete, garage roofs in progress

Lots 14 through 19 front gable in progress

Lot 1 sub-slab plumbing

Lot 5 sub-slab plumbing

Lot 6 sub-slab plumbing

Lot 7 sub-slab plumbing in progress

Project meeting June 11, 2008

Wednesday June 11, 2008

Thursday May 22, through Wednesday June 11, 2008.

This week highs 90’s and 80’s during day with thunder storms, 90’s to 70’s overnight. Showers and thunder storms forecast for coming weekend, next weeks highs in the 80’s.

26.40% complete

Attendance;

James Thomas; Union Square Homes
Dan Thomer; WDC Construction
Lisa Gaffney; CEDA
Michael Washington; OHCD
John Paczewski; PHFA
Kevin Maguire; for TRF
Colin Dawson RA; CDRA

Distribution;

all in attendance
Harold Thomas; Union Square Homes
David Collins AICP, OHCD
Harry Ackroyd

Progress;

Lot 1;
party wall masonry to 2nd floor, living room and garage slab complete, 1st floor wall panels on site

Lot 2;
party wall masonry to 2nd floor, house slab complete, 1st floor wall panels on sites

Lot 3;
party wall masonry to 2nd floor, house slab complete, 1st floor wall panels on sites

Lot 4;
party wall masonry to 2nd floor, house slab complete, 1st floor wall panels on sites

Lot 5;
living room and garage slab complete,

Lot 6:
living room and garage slab complete,

Lot 7;
living room and garage slab complete,

Lot 8;
main roof truss installed, no front gable

Lot 9;
main roof truss installed, no front gable

Lot 10;
main roof truss installed, no front gable

Lot 11;
main roof truss installed, no front gable

Lot 12:
main roof truss installed, no front gable

Lot 13;
main roof truss installed, no front gable,

Lot 14;
main roof truss and sheathing installed, no front gable

Lot 15;
main roof truss and sheathing installed, no front gable

Lot 16;
main roof truss and sheathing installed, no front gable

Lot 17;
main roof truss and sheathing installed, no front gable

Lot 18;
main roof truss and sheathing installed, no front gable

Lot 19;
main roof truss and sheathing installed, no front gable

Lot 20;
main roof and front gable truss and sheathing complete, garage truss and sheathing installed

Lot 21;
main roof and front gable truss and sheathing complete, party wall masonry to lot 20 complete to roof sheathing

Lot 22;
main roof and front gable truss and sheathing complete, party wall masonry to lot 21 complete to roof sheathing

Lot 23;
main roof and front gable truss and sheathing complete, lot 22-23 party wall masonry in progress

Lot 24;
main roof and front gable truss and sheathing complete

Lot 25;
main roof and front gable truss and sheathing complete, party wall masonry to lot 26 complete, garage roof truss and sheathing in progress

Lot 26;
main roof and front gable truss and sheathing complete, garage roof truss and sheathing installed


Anticipated Progress next week weather permitting;


Lots 1, 5, 6 & 7;
sub-slab plumbing complete, slab pour complete, masonry party wall to 2nd floor complete

Lot 8 through 13;
roof sheathing and front gable complete

Lot 14 through 19:
front gable complete

Lots 20 through 26;
party wall masonry complete, garage roof complete


Prepared by Colin Dawson RA





4th and Jeffery Street Lot 1 through 7
4th and Yarnall Street lots 7 through 1

Union Street lots 19 through 14
Union Street lots 8 through 13

3rd and Yarnall Street lots 26 through 20

Lot 23-24 party wall in progress
Lot 23-24 part wall in progress

Lot 20 garage

Lot 7 living room slab poured, garage slab ready for pour

Lot 1 through 7 1st floor wall panels delivered