HomeMy WebLinkAbout2020-12-17 Oxoboxo Masonry AmendmentOxoboxo Lofts Exterior Masonry
SHPO Condition of Approval: Exterior Masonry Cleaning, Repointing & Brick Replacement
“EXTERIOR MASONRY: Masonry cleaning, repointing & brick replacement samples for the exterior must
be provided and approved by the SHPO prior to the start of work. Approved samples must be maintained
throughout construction. Sandblasting will not be allowed. The cleaning process proposed for the
exterior masonry must not damage or substantially alter the physical characteristics of the masonry
surfaces. Good quality overall and close-up color photographs of the masonry both before and after
cleaning must be submitted with the Request for Certification of Completed Work. Repointing mortar
must match the color, texture, strength, joint width and joint profile of the existing historic masonry. This
work must not damage any of the surrounding brick. Specifications and repointing samples should be
reviewed and approved by the SHPO before proceeding with this work. Good quality overall and close-up
color photographs of the masonry both before and after repointing must be submitted with the Request
for Certification of Completed Work.”
Summary of the Attachment 1 Masonry Cleaning Submittal
The masonry cleaning submittal consists of three parts:
1) Pages 3-7: Text copied directly from Preservation Brief 1 with notes in red added to describe the
process taken on the Oxoboxo Lofts project. The text is taken from the “Cleaning Methods and
Materials” section of the brief. The copied text includes the entire section with the exception of
the sub-section on Abrasive and Mechanical Cleaning which is not appropriate for use on
historic masonry buildings.
2) Pages 8-13: Cut sheets for the selected masonry chemical cleaners for the Oxoboxo Lofts
project.
a. Pages 8-9: Savogran TSP Trisodium Phosphate Cleaner (Water Washing with Detergents)
b. Pages 10-13: Prosoco Enviro Klean EK Restoration Cleaner (Acidic Cleaner)
3) Pages 14: Photo of the test area showing (listed here in order starting with the most gentle
method) Water Only, TSP Cleaner and Restoration Cleaner.
Summary of the Attachment 2 Masonry Repointing Submittal
The masonry repointing submittal consists of photos of mortar samples on all buildings in the project.
1) Pages 15-16: Building A
2) Page 17: Building B
3) Pages 18-19: Building C
4) Page 20: Building D
5) Page 21: Building E
6) Pages 22-23: Building F
7) Page 24: Building G
8) Page 25: Building H
9) Page 26: Building J
10) Page 27: Building K
11) Pages 28-29: Building L
12) Pages 29-30: Building J/M Connector
13) Page 31: Building M
Summary of the Attachment 3 Brick Replacement Submittal
The brick replacement submittal consists of photos of brick samples on all buildings in the project.
1) Pages 32-36: Buildings A, B, D, E and J/M Connector
2) Page 37-43: Buildings C, G, H, J, K, L and M
3) Page 44: Building F
Existing Mortar
BUILDING A
BUILDING A
Proposed Mortar
BUILDING B
Proposed Mortar
Existing Mortar
Existing Mortar
BUILDING C
BUILDING C
Proposed Mortar
BUILDING D
Existing Brick & Mortar
Proposed Brick & Mortar
BUILDING EExisting Mortar
Proposed Mortar
BUILDING F
Existing Mortar
BUILDING F
Proposed Mortar
BUILDING G
Proposed MortarExisting Mortar
BUILDING H
EXISTING MORTAR
PROPOSED MORTAR
BUILDING J
Proposed Mortar
Existing Mortar
BUILDING K
Existing Mor tar
Proposed Mortar
BUILDING L
Existing Mor tar Type “A”
Existing Mortar Type “B”
BUILDING L & J/M CONNECTOR
Proposed Mortar Type “A”
Proposed Mortar Type “B”
BUILDING J/M CONNECTOR
Existing Mortar Type “A”
Existing Mortar Type “B”
BUILDING M
Existing brick & mortar
Proposed brick & mortar
Buildings A, B, D, E & J/M Connector Brick Replacement Samples
Sample held against Building D Background
Buildings A, B, D, E & J/M Connector Brick
Replacement Samples
Samples held against Building E Background
Buildings A, B, D, E and J/M Connector Brick
Replacement Samples.
Samples held against J/M Connector Background.
Building B
Building B Above
Granite: No brick
to be replaced in
this location
Building B Front
Tower: Brick to
be replaced as
needed in this
location
Brick to be
replaced as
needed in
this location
Building A:
A/B
Connector:
Existing
brick to be
demolished
at this
location.
Building A
Brick Replacement Sample
for Buildings C, G, H,
J, K, L and M except for
southeast corner of M.
Samples held against
Building C background.
Brick Replacement Samples
for Buildings C, G, H,
J, K, L and M except for
southeast corner of M.
Samples held against Building
L background.
Building G
Building C
Building G
Building K
Building H
Building K
Building M
Bldg M
Southeast
Corner
Building M
Brick Replacement Sample for Building F,
held against Building F Background.