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Alaska State Legislature
Legislative Council

Capitol Building Exterior Restoration


Project Summary

The Alaska State Capitol Seismic Retrofit and Exterior Renovation Project is a Legislative Council Project. The Legislature has been setting capital funding aside since 2006 for the exterior repair and heating upgrades to the Capitol. It will be a multi-year project. A number of studies were performed by Mr. Paul Lukes, Building Envelope Consulting Services LLC of the effects of 80 years of the building's exterior elements which have begun to display signs of leakage, degradation and stress such as spalling bricks, cracked sandstone along the lower wall, portico roof structure, etc. Legislative Council awarded RFP 591 to Jensen Yorba Lott, Inc. for design services, construction documents and if needed bidding and construction services for a seismic retrofit beginning January 1, 2013 and ending December 31, 2016. Legislative Council awarded ITB 590 to Alaska Commercial Contractors, Inc. for Phase I of the Alaska State Capitol Seismic Retrofit and Exterior Renovation starting May 14, 2013 and ending October 30, 2013. Phase I consists of structural work related to reinforcing the portico, column stone repair, repair of concrete structural members in the crawl space, removal and salvage of components to the portico at the main entrance of the building, replacement of existing aging and deteriorating waste lines, cleaning of existing storm draining system and creating additional drainage for the crawl space, etc. Phase II will begin in 2014 after we issue a bid for construction services to restoring or replacing exterior masonry (brick, stone and terra cotta components), retrofit the Capitol, window replacement and heating upgrades which will be done over several years because of session, winter conditions and the size of the project.

Public notice of RFP 598 was provided on November 8, 2013. On December 18, 2013, the Legislative Council met and approved the award of RFP 598 to Dawson Construction Inc. in the amount not to exceed $200,000 for pre-construction services for the Capitol Seismic Retrofit & Exterior Renovation Phase II.

On April 3, 2014, Legislative Council approved a construction services contract for the 2014 construction season with Dawson Construction, Inc. in an amount not to exceed $5,800,000 for the first phase of the construction work. The work during the 2014 construction season will primarily be limited to construction work on the west side (Main Street side) of the Capitol because the west side is representative of the rest of the building and can be used to project the work for the other parts of the building. Also, some work on the infill areas will be completed in 2014. Estimated final construction completion date of the work described in RFP 598 is 2016.

On August 7, 2014 Legislative Council approved an amendment to the Dawson Construction contract to increase the contract amount by $650,000 to accelerate the work and scope of the 2014 construction season for the Seismic Retrofit and Exterior Renovation, Phase II. This will avoid a conflict between the masonry work and the demolition work near the northwest corner at the beginning of the 2015 construction season and reduce the amount of work to be done in the following years.

On November 12 2014 legislative council approved an amendment to the Dawson Construction contract in the amount of $27,150,000 to complete the project over the next several years.

Procurement Officer:
Senator Gary Stevens, Chairman, Legislative Council
Project Directors:
Don Johnston, Capitol Building Manager (until 12/30/2013)
Jeff Goodell, Capitol Building Manager (since 12/31/2013)
Pam Varni, Executive Director
Contractors:
Alaska Commercial Contractors, Inc.
Jensen Yorba Lott, Inc.
Dawson Construction Inc.
Paul Lukes, Building Envelope Consulting Services LLC
Updates:

Update May 5, 2015
Update November 11, 2014
Update October 22, 2014
Update October 3, 2014
Update September 19, 2014
Update September 5, 2014
Update August 29, 2014
Update August 15, 2014
Update August 4, 2014
Update July 21, 2014
Update June 13, 2014
Update June 6, 2014
Update May 30, 2014
Update May 23, 2014
Update November 1, 2013
Update October 25, 2013
Update October 18, 2013
Update October 11, 2013
Update October 4, 2013
Update September 27, 2013
Update September 20, 2013
Update September 13, 2013
Update September 6, 2013
Update August 30, 2013
Update August 23, 2013
Update August 16, 2013
Update August 9, 2013
Update August 2, 2013
Update July 26, 2013
Update July 19, 2013
Update July 12, 2013
Update July 5, 2013
Update June 28, 2013
Update June 21, 2013
Update June 14, 2013
Update June 10, 2013
Update June 7, 2013
Update May 31, 2013
Project Documents


Update May 29th

New brick with copper flashing New brick at west wall over boiler room
Roof looking west Roof looking northeast
Paul Lukes building envelope consultant Rylem tests being conducted
Concrete beam demolition north and west wing East wing with sccaffold and wrapped for demolition
Courtyard platform looking west


Update May 15th

2015 Crane setup 2015 Dawson offices upper lot
Mason's scaffold west side New precast water table
North face fully involved demo 2nd floor precast water table
Courtyard work platform from roof Courtyard work platform from 2nd floor
New brickwork main street


Update Nov 11th

Newly finished window, trim, and heater West elevation without scaffolding after dampproofing
New windows and dampproofing finished Main street, west wing, and north elevation.
New fuel tank installation Parking lot after crane demobilization
Dawson HQ toward end of 2014 season A new view
Another new view


Update Oct 22nd

East alcove topped off with temporary roof. West alcove topped off with temporary roof.
Northwest parapet capped for weather. Southwest down from roof.
Scaffold teardown west face after damp proofing. Scaffold teardown west face after damp proofing.
Scaffold coming down Southwest corner dampproofing
Demobilization in progress 511A New windows, wall finishes, trim
517 New windows, wall finishes, trim


Update Oct 3rd

New windows with glass west face Newly glazed windows west
Shoring NW corner 5th Floor East Alcove 4th floor concrete pour "new room"
Shot crete pour carpentry shop ground floor boiler room.


Update Sept 19th

Pouring west alcove wall to roof. Form and bar for west parapet
Demo at north face west wing 5th floor Demo at fire escape 5th floor
Forms stripped, new concrete wall west alcove New concrete wall west alcove
Heat pipes being insulated 2nd floor Demo and reconstruction in full swing west and north
New windows frames 5th floor west New window frames w/damp proofing


Update Sept 5th

West parapet demo. North parapet demo.
North face west wing scaffolding. West wing without debris chute, after shot crete application.
Shot crete application. Shot crete applied @ window block out.
Shot crete hopper. Shot crete with mixer west wing.
Window block out & rebar installed for shot crete. Rebar around window blockout set; set for shot crete; column to column and beam to beam.
Floor after floor looking down continous reinforcing. Room to room set up for shot crete.
Shot crete application. Shot crete application.
Window mock up water test. Window mock up water test.


Update Aug 29th

Shooting Crete Shot Crete application around window blockout
Shot Crete under window Shot Crete cold joint@ 4th flr. form and blockout
Shot Crete adjoining existing column 4th floor


Update August 15th

West Alcove Concrete Pour West Alcove Concrete Pour
West Alcove Concrete Pour West Alcove Concrete Pour


Update August 4th

Rebar setting west wall NW cornerRebar and window blockout
Rebar ready for Shot Crete Rebar tying west wall


Update July 21st

First concrete pour First pour from roof infill wall.
View from Representative Stolze's office View from Representative Austerman's office
View of southwest corner at 5th floor Debris loadout


Update June 13th

Reconfiguring Rep Feige's outer wall Courtyard view
View from the northwest Rooftop scaffolding
Courtyard from the roof


Update June 6th

Main St. scaffolding completed 1st/2nd floor East courtyard in fill demolition
Main St. scaffolding with safety netting and debris chute Removing Main St. parapet wall
Main St. with parapet wall removed 5th floor inner demolition Main St. side


Update May 30th

2nd floor East scaffold complete 2nd floor West courtyard scaffold complete
Start of Main St. scaffolding Start of Main St. scaffolding
2nd floor East courtyard exterior removal Main St. scaffolding near completion
2nd floor entry w/canopy removed 2nd floor courtyard entry w/canopy removed


Update May 23rd

Dawson mobilized on site. Shoring in place in lower parking deck.
Tower crane setup. Tower crane fully setup and in motion.
West side fuel tank removed.


Update November 1st

All granite set in place, grouted and caulked. Workers are resetting the sidewalk pavers. EPDM membrane installation on portico roof. This will be temporary through the next two construction seasons. Permanent roofing will be installed in last phase of construction @ 2016.
Contractor begins demobilization and final cleanup of project site. Main entrance completed with temporary handrails and lighting.


Update October 25th

Workers reinstall granite blocks at main entrance. Granite steps are set in place for reinstallation and grouting.
Workers begin reinstallation of granite steps. Granite blocks and steps are all set in place ready for grouting.


Update October 18th

Drillers remove cores while drilling down through marble columns. The 1 1/4"diameter steel rod shown is inserted into the 4. hole. Grout will then be pumped into holes from the bottom up through an attached plastic tube.
Grout is pumped through attached plastic tube. Grouting of all four columns, overhead view.


Update October 11th

Concrete pour for stair stringers and grade beam completed Contractor mobilizes to spray Shotcrete in crawl space for concrete column & joist repairs.
Shotcrete has been applied to column. Shotcrete is concrete (or sometimes mortar) conveyed through a hose and pneumatically projected at high velocity onto a surface, as a construction or repair technique. Workers core drill a 4. diameter hole 36 feet down through the sandstone capitals, marble columns, granite stone base and into concrete foundation. The 4. hole is drilled to insert and center a 1 . diameter steel rod. With steel rod in place grout will be pumped into holes from the bottom tying the concrete portico, sandstone capitals, marble columns, granite stone base and concrete foundation all together.


Update October 4th

Overhead view of forms and steel for portico concrete roof slab and beams Pump truck and mixer set up for delivery of concrete for portico roof slab and beams
Workers finish concrete roof slab Forms are constructed at main entrance for grade beam and stair stringers


Update September 27th

Workers construct forms for lintel beam against building on top of concrete pilasters Workers tie rebar in forms for lintel concrete beam pour
Workers finish concrete for new lintel beam Overhead view of concrete lintel beam pour


Update September 20th

Forms are completed and ready to pour 4th lift of concrete pilasters Concrete is pumped from mixer into pilaster forms to complete 4th lift
Prior to pouring concrete stair stringers and grade beam, vertical pin piles are driven into ground to stabilize the new concrete stair stringers and grade beam. New sidewalk completed with some landscaping complete.


Update September 13th

Workers remove forms from 2nd lift pour of the pilasters. Workers tying steel for concrete beams prior to forms.
Workers pump concrete into forms for 3rd lift. This pour includes the lower horizontal beam with the 4 pilasters. Forms are removed from the 3rd lift concrete pour.


Update September 6th

Crawlspace excavation, electrical and mechanical has been completed. Concrete joist and column repair is next. Loose concrete will be removed and exposed rusted steel (as seen in photo) will be sandblasted prior to joist and column repair. Loose concrete has been removed from joist and steel has been sandblasted in preparation for repairs.
Workers pump concrete into pilaster forms. Front of building is prepped for new granite and paver stonework to form sidewalks. New sidewalks will match existing downtown sidewalks.


Update August 30th

Rebar in place and fastened to building ready to form. Once forms are in place concrete will be poured in approximately 4 to 5 lifts to create concrete pilasters for portico roof beam. Workers verifying dimensions and prepping the building to accept and fasten the pilaster forms.
Worker fastens pilaster form in place. Pilaster forms installed to pour first lift of concrete.


Update August 23rd

Drilling through column foundations completed, ready for epoxy and rebar. Workers install fabric in preparation for backfill.
Workers install epoxy and rebar through column foundations into building foundation. Workers tie steel baskets for concrete pilasters. Steel baskets will be raised and set in place by crane.
Steel basket being hoisted by crane. Crane, man lift, scissor lift (not seen) and workers on the ground are required to set baskets in place.
Crane lowers steel basket into place against building. Workers set third basket into place using crane, scissor lift and man lift.


Update August 16th

Excavation/soil removal was performed around the column foundations to allow horizontal drilling into the building foundation. Horizontal drilling through column foundations into building foundation. Steel will be installed in holes and epoxied to tie column foundations to the building foundation.
Worker drills into column foundation. Outer column foundations were drilled 11' deep, inner foundations were drilled 8' deep. Installation of new storm drains in crawl space complete and connected to city storm drain.


Update August 9th

Existing concrete columns and beams are drilled to accept steel/mechanical fasteners which will tie the new concrete pilasters to the building. A cementitious mix is applied to face of red brick infill in preparation for new pilaster forms, steel and concrete.
Soil removal in crawl space is complete, installation of fabric, 4" perforated storm line and washed rock in progress. New storm line trench with washed rock and new waste lines shown.
New waste lines and cable management shown. Also shown is a good example of an existing concrete footing with exposed steel. Repair of concrete footings, beams and joists in this condition will be next.


Update August 2nd

Gray area on granite slab shows foot print where stone cladding was removed from face of building. Penetrations through granite slab to concrete footing below will be drilled for new concrete pilasters to be poured in place to support new concrete portico roof slab. Existing cracked granite slab removal for access to footing below for new concrete pilasters.
Beautiful Juneau morning, marble columns with temporary steel bracing and an un-faced main entrance. Granite blocks on the ends of the front stairs have been removed to allow for foundation repair.


Update July 26th

Stone cladding removal from face of building around main entrance begins. Stone cladding pieces being loaded for transportation to off-site storage facility.
Stone cladding removed from 2nd floor level to 1st floor level. Stone cladding removal at main trance complete.


Update July 19th

Worker installs temporary bracing from concrete columns to angle iron fastened to capital tops. This bracing is required so lower temporary bracing and collars on columns can be removed prior to stone removal on face of building. Overhead view of installed temporary bracing from concrete columns to angle iron fastened to capital tops.
Excavation completed in this area of the crawl space showing major progress. Electrical, data and communication wire management in crawl space provides access for storm and waste line replacement.


Update July 12th

Portico demolition is complete exposing the concrete columns, beams and brick infill for temporary bracing installation. Tops of capitals are exposed for temporary bracing installation
Tops of capitals are laid out and drilled to accept mechanical fasteners and steel angle iron for temporary bracing. Steel angle iron will be fastened to tops of capitals for temporary bracing back to concrete columns.


Update July 5th

Excavation continues in the crawl space as evidenced by the light and dark color of the footings and foundation. The lighter colored/dry upper portions of the footings and foundation show how much of the footings and foundation was above grade prior to excavation. The darker colored/wet lower portions show how much soil has been excavated and removed. Excavation in the crawl space is to allow access to aging waste lines and the installation of perforated pipe at the footing and foundation to collect ground water and runoff. New drain lines will collect and divert water to CBJ storm drains.
Other items in the crawl space requiring attention are miscellaneous electrical, data and communication lines. These will be replaced as needed during cable and wire management improvements. Demolition of concrete and steel continues on the portico slab.
Portico slab removed, workers jackhammer and remove remaining blocks and pieces of portico. Upper portico demolition complete as seen in the photo. Stone pieces remaining are the .Capitals. sitting directly on top of the marble columns. The next phase of demolition will be to remove the sandstone cladding from the exterior wall at the main entrance.


Update June 28th

6/24/13 Demolition continues on the portico upper concrete deck. 6/24/13 Salvaged piece of portico sandstone is lowered for transportation to off-site storage. Salvaged pieces will be retained for replicating information for Phase II.
6/25/13 Exterior brick cladding removal from South wall above portico. Steel beam has been temporarily installed to support cladding above and will remain in place until removed during Phase II 6/27/13 Excavation and soil removal continues in the crawl space with the assistance of 4 conveyor belts in the crawl space and 1 on the exterior. Contractor has completed approximately 25% of required soil removal.
6/27/13 Exterior conveyor belt lifting soil into dump truck. 6/28/13 Steel bands are clamped around marble columns and steel angle iron is mechanically fastened to main entrance wall. Steel bracing will be attached at a 45. angle from two sides of the steel bands back to the angle iron attached to the building. Bracing is to ensure columns remain in place during final demolition of the upper portion of the portico. Bracing will remain in place until new concrete pilasters and slab have been poured.


Update June 21st

Excavation slowly continues under the building while demolition is moving right along with the portico. Temporary steel ledger is in place, portico balusters and blocks have been removed and brick cladding is now being removed. 4th street will be closed to traffic for the next two weeks starting on Monday 6/24/13 for demolition to the portico slab and sandstone cladding around the main entrance doors and windows.

Portico corner stone removal Overhead view of work area
Portico railing blocks Portico slab, railing removed, brick cladding demo


Update June 14th

This week excavation is taking place in the crawl space. As of yesterday 4 truckloads of soil have been hauled away equating to 1 truck per day way below their estimated 6 per day. The Project Manager brought up the subject at yesterday's meeting and talked with the General Contractor about it. They are aware and plan to step things up with additional equipment.

The shoring, work platform & safety railing is all in place at the portico. Some brick demo was performed to expose the concrete columns for installation of steel brackets. A saw cut into the brickwork was made for the steel angle iron. Steel beam/ledger will be installed onto brackets to support upper brick while lower brick, portico and sandstone cladding is removed. Steel ledger will remain in place until Phase II at which point it will be removed during cladding demolition.

Preliminary demolition has been performed to the sandstone railing/balusters. Major demo to the portico should begin @ Wednesday 6/19/13 and take approximately a week. Excavation will continue in the crawl space until the predetermined amount has been removed.



Mini excavator, conveyer belt and worker in crawl space Conveyer belt and other misc equipment in crawl space
Portico roof, steel brackets, saw cut @ exterior lounge wall Steel angle iron installed in saw cut & bracket.
Steel ledger/beam will be installed between the two


Update June 10th

Metal shoring assembly/installation. Conveyer belt is due for delivery & installation today and excavation set for tomorrow. Starting tomorrow morning the daycare pick up/drop off area will be relocated to the upper half of the Seward Street loading zone. The lower portion will be designated for contractor use for trucks and equipment to remove, load and haul away the excavated soil and debris.


Update June 7th

ACC removed cornerstone and excavated the soil (corner of 4th & Seward) to expose the footing & foundation. Core drilling and concrete cutting was performed to create access in & out of the crawl space. Portico granite slabs we're shored up with timbers in preparation for metal shoring above. Metal shoring delivered to site, metal shoring installation begins.



Update May 31st

The architects and project director met at the Capitol portico stairs to investigate the quality of the concrete foundations under the columns and stair stringers. It appears that the initial concrete pour up to about 2 feet below the ground floor and the concrete in the sub stringers is OK. There are some unexplained cracks and some cold joints between pours that may need some repair.

The architects recommend core drilling into the brick and mortar between the top of the column piers and the granite block supporting the columns to determine if the brick and mortar is continuous and its condition.

Hendricksen Construction, a subcontractor, probed alongside the landing slab using a #6 rebar and a jack hammer and reached resistance about 13 feet below grade which is consistent with the original drawing 400-E which shows a continuous footing under the portico at approximate elevation 59.0 (approximately 17. below ground floor).

The architects instructed the contractor to shore the granite landing and remove all the brick and loose and deteriorated concrete and mortar while we determine how best to re-construct the supports.


Project Documents

Summary, Evaluation, Corrective Options, and Estimated Corrective Costs pertaining to the Alaska State Capitol - Prepared by Paul Lukes, Building Envelope Consulting Services 2/20/2013