TTV_Presentation_June_6,_2017.pdf

TTVARCHITECTS, INC.

United States District Courthouse

Repair & Alterations for the U.S. District Court

Northern District of Florida Pensacola, Florida

CMC Pre-Proposal Conference Presentation06 June 2017

Agenda

• INTRODUCTION

• SCOPE OF WORK

& EXISTING CONDITIONS

• EXTERIOR & LOBBY

• FORCE PROTECTION INTEGRATION

• BUILDING ENVELOPE INTEGRATION

• HVAC INTEGRATION

Introduction

Team Organization

TTVARCHITECTS, INC.

Structural/Envelope/ Blast

Civ i l/ Landscape

HVAC/Electr ical/Plumbing/ Fi re Protect ion

LEED/Light ing Cost Est imat ing

Environmental (Mold)

Pr ime Archi tect

Lead Designer

Scope of Work & Existing Conditions

• Prospectus Number PFL-2245-PE15, Project Summary:• "The General Services Administration (GSA) proposes a repair and alteration project to remediate mold, eliminate water infiltration, replace the building façade, and undertake system and site upgrades at the Pensacola District Courthouse located at 1 North Palafox Street in Pensacola, FL (the ‘District Courthouse’).”

• Scope items listed in the Prospectus:• Façade replacement• Meet Florida hurricane requirements• Meet current blast protection standards• New standing seam metal roof system• Abate the presence of mold • Repair or replace interior finishes damaged by water intrusion• Modernize fire protection systems• Modernize heating, ventilation, and air conditioning (HVAC) system to better control interior humidity• Improvements to public restrooms• Floor drains• Wall finishes• ABAAS accessibility compliance• Repair grounds and approaches• Repave parking area• Improve site drainage

Congressional Authorization

Existing Condition- view from Palafox Street

Existing Condition- view from corner of Garden & Palafox Street

Limestone Embedded Precast Exterior

Limestone Exterior- view from corner of Garden & Palafox Street

Limestone Exterior- view from Palafox Street

Expanded Lobby

Force Pro tection Integration

Typical Window Anchorage:

Window & Precast Panel Anchorage

Typical Precast Anchorage:

TYPICAL WINDOW ANCHORAGE

TYPICAL

PRECAST

PANEL

TYPICAL

PRECAST

PANEL

SUPPORTING

PUNCHED

WINDOW

TYPICAL PANEL ANCHORAGE

Lobby Blast Protection & Hurricane Mitigation

INTERIOR LOBBY HARDENING LOBBY BLAST & HURRICANE MITIGATION

EXISTING STEEL COLUMN TO BE

CONCRETE ENCASED, TYP.

HSS12x12x5/8 BEAM

15’-0” ABOVE LEVEL

1 SLAB, TYP.

HSS12x12x5/8 POST

FROM LEVEL 1 TO

LEVEL 3, TYP.

BLAST-RESISTANT

CURTAIN WALL, TYP.

HURRICANE-RESISTANT

CURTAIN WALL, TYP.

COLUMNS & BEAMS EMBEDDED

INTO CURTAINWALL, TYP.

Building Envelope Integration & Details

Stone Laminated Precast Panels with Internal Leaders - South Elevation

LOW SLOPE ROOF WITH PROPER DRAINAGE/ SLOPE

(JUDGE'S GARAGE)

REDUNDANT EMERCENCY

EMERCENCY OVERFLOW ROOF DRAINS WITH RIGHT

SIZED CAPACITY & DRAIN OUT OF BUILDING ABOVE

GRADE, TYP.

PRIMARY ROOF DRAINS

W/ RIGHT SIZED

CAPACITY,

TYP.

UPPER STANDING SEAM METAL

ROOF WITH RIGHT SIZED

CAPACITY PERIMETER GUTTER &

DOWNSPOUTS TO 4TH LEVEL

ROOFS & GRADE CONNECTIONS,

TYP.

NOTE: COMPLETELY REMOVE

& REPLACE EXISTING

STORMWATER DRAIN SYSTEM

FROM ROOF DRAIN TO

STREET, TYP.

PRD16

LOW SLOPE ROOF AT PORTICO WITH INTERNAL

RIGHT SIZEDDRAIN SYSTEM.

COMPLETE INTERNAL ROOF

DRAIN & PIPING ASSEMBLY

- RIGHT SIZED & QUANTITY OF

DRAINS, TYP.

UPPER GUTTER &

DOWNSPOUT, TYP.

OVERFLOW SCUPPERS (RIGHT SIZED) ALONG

PARAPET @ EACH

DRAIN, TYP.

REDUNDANT EMERCENCY OVERFLOW

SCUPPERS (RIGHT SIZED) ALONG PARAPET @

EACH

DRAIN, TYP.

EMERCENCY OVERFLOW ROOF DRAINS

WITH OVERSIZED CAPACITY & DRAIN OUT

OF BUILDING ABOVE GRADE, TYP.

PRD11 PRD10

PRD9

PRD8

PRD1 PRD2 PRD3 PRD4 PRD5

PRD6 PRD7

PRD15 PRD14

PRD17

Roof Plan- Internal Roof Drains w/Concealed Gutter & Down leaders at 5th Level Roof

5TH FLOOR

PRECAST CORNICE ELEMENT

WITH CONCEALED GUTTER

SYSTEM

GUTTER DETAIL WITH CONCEALED DOWN LEADERINTERNAL LEADERS WALL SECTION

Window Head Detail Window Jamb Detail

5th Floor Window Sill and Roof Drain Detail 5th Floor Roof Assembly Detail

- MOCK-UP,WATER & AIR LEAKAGE TEST

Building Envelope System QA/QC Mock-Up& Water Testing Requirements

SS METAL ROOFING ASSEMBLY:

- WATER & AIR INFILTRATION TEST

GUTTER, DOWNSPOUT,& ROOF INTERFACE ASSEMBLY:

- MOCK-UP TO REVIEW/APPROVE

- AESTHETIC QUALITY

- TECHNICAL VERIFICATION OF WATERPROOFING COMPONENTS

- ESTABLISH QUALITY CONTROL BENCHMARK

- WATER TESTING PRIOR TO IMPLEMENTATION

- WATER TEST & FLOOD TEST AFTER INSTALLATION FOR WATERTIGHTNESS

PUNCHED WINDOW & FLASHING ASSEMBLY:

- MOCK-UP,WATER & AIR INFILTRATION TEST

PARAPET & EMERGENCY

OVERFLOW ASSEMBLY:

- MOCK-UP & WATER TEST

CURTAINWALL WINDOW & FLASHING ASSEMBLY:

-MOCK-UP,WATER & AIR INFILTRATION TEST

ALL STORMWATER PIPING/LEADERS

WATER TEST

CONTINUOUS AIR/MOISTURE BARRIER

ASSEMBLY:

ALL HORIZONTAL WATERPROOFING,

ROOF & DRAIN ASSEMBLIES:

-FLOOD TEST

Protection of Building Interior during Construction

• Exterior brick and interior wall finishes will be removed, but CMU back up wall will remain throughout construction

• Window replacement will likely be staged to occur one at a time or in small groups, so that no windows are left uncovered at the end of each work day

• Roof replacement work will be staged so that roof demolition areas are re-covered at the end of each work day

• Building HVAC systems will remain operational throughout construction, and interior humidity will be monitored

• CMc will be expected to develop a risk management plan outlining specific means and methods of protecting interior finishes from physical damage and moisture/humidity damage

• Hurricanes and pop-up thunderstorms are known risks that the CMc will be expected to manage

Mold Remediation

General Remediation Scope

• Remove and replace all finishes on interior faces of exterior walls and chases

• Remove and replace the first two feet of finishes (one side only, full height) at the intersection of interior walls that connect to an exterior wall

• If additional contamination is discovered after exploratory demolition begins, demolition will be extended to address all contaminated materials

• Remove and replace all carpet

• Remove and replace all acoustic ceilings

• Specific areas of known contamination will be addressed

• E.g., USMS locker rooms

• Millwork/casework will generally be cleaned and retained

• All HVAC distribution components will be sanitized

Site & Landscape

Site Improvements

HVAC Integration

• New single, chilled water Dedicated 100% Outside Air Unit (DOAHU) located outside the building.

• Nominal cooling capacity o f 165 tons, staged electric heating capacity o f 400 KW, and air flow delivery of 21,000 cfm.

• Ducted (internally) to existing main fresh air intake located on the 5th floor.

• Airflow measuring devices and modulating dampers placed in existing ductwork to ensure constant flow of conditioned outside air to each air handler.

• The existing chilled water air handlers will be cleaned in accordance with the NADCA St andards and reused.

HVAC (Heating, Ventilation, & Air Conditioning)

• The condensate drain pan inside theexisting air handlers will be cleaned andrust proofed t o prevent deterioration o f thedrain pan.• The existing ductwork will be fit t ed withinsulated access panels, 50 feet apart, t oallow cleaning of the interior of theductwork. The interior of all existingductwork will be cleaned.• All existing building HVAC system controllerswill be upgraded (hardware and software)• The entire building HVAC system (both airand water side) will be t ested, adjusted,balanced, and commissioned.

HVAC (Continued)