These pages describe the buildings of the Lawrence History Center compound, the former home of the Essex Company, located at 6 Essex St. We hope to provide a complete history, details of prior use, photos, etc. but at this point these pages are relegated to being used to describe and coordinate maintenance projects on the compound.
The following attachments show various views of the LHC compound.
| Attachment | Size |
|---|---|
| LHC Compound - Birdseye View - from North | 472.82 KB |
| LHC Compound - Birdseye View - from South | 297.54 KB |
| LHC Compound - Plan View | 140.54 KB |
| street view.jpg | 129.37 KB |
| carpenter-shop.jpg | 1.04 MB |
| carpenter-shop-office.jpg | 178.54 KB |
| warehouse-stable.jpg | 118.07 KB |
There are a variety of building maintenance projects underway at the LHC. This section is the 'cover page' for those projects, which are linked below.
The first major building project was the "Urgent Building Repairs Project", which consisted of restoring structural vitality to the work buildings of the LHC compound (the Carpenter Shop, Forge, Stable, and Warehouse). The work involved restoring major beams and sections of the floor and roof, along with making the roofs of the Warehouse, Stable and Forge watertight. These projects went to bid in the spring of 2009, and the work was performed during the summer of 2009. It was funded by an MPPF grant, along with matching CDBG funds. The work was performed mostly by the contracting firm AJ Wood. The complete details of this project, including the specification package are described in the subchapter below.
We are now embarking upon a series of 4 additional projects, to use the remaining MPPF grant money, and additional CDBG funding. These projects are also confined to the LHC Work Buildings. They are summarized here:
LHC Work Buildings Masonry Project - This involves the restoration of the Forge chimney and re-pointing the stable wall above the Forge.
LHC Work Buildings Basement Floors Project - This involves installing basement floors in the Carpenter Shop and the Warehouse.
LHC Work Buildings Windows Project - This involves restoring the worst windows of the Work Buildings.
LHC Work Buildings Electrical Project - This involves installing electrical lighting and outlets in the Work Buildings.
The specification packages and any other relevant addendum and project details will be described in the following sections.
The standard contract for all LHC Building Maintenance work is the AIA Contract.
Attached here are the bid specification documents for the 'Urgent Repairs' project. These can serve as a form and/or template for the creation of bid specs for the current projects. There will be a significant amount of editing required to prepare these for a different project.
| Attachment | Size |
|---|---|
| bid-specs-doc-files.zip | 208.5 KB |
This project involves urgent masonry work on the LHC Work Buildings, primarily at the intersection of the Forge and the Stable. The work is summarized here:
The bid specification for this project will be attached below.
Since the LHC compound is a registered National Historic Site, the masonry work must be done carefully to preserve the historic nature and account for the soft brick and mortar used in the buildings. The work is tightly specified, and must be inspected by the Mass Historical Commission. The work requires a mason well-versed in historic building masonry.
Attached is a plan of the exterior of the LHC Work Buildings showing the location of the above-mentioned masonry work.
Also attached is the specification written by the Preservation Engineer retained on the "Urgent Repairs" project. This spec gives important instructions and conditions for the masonry work, and should be included in the bid specification package.
There are sets of photos attached below for each part of the masonry project. Download them into a folder and unzip them.
| Attachment | Size |
|---|---|
| lhc-compound-dwg-7-masonry.pdf | 19.32 KB |
| 4500-Masonry.doc | 66 KB |
| Forge and Stable.jpg | 138.78 KB |
| masonry-photos-forge-chimney.zip | 453.23 KB |
| masonry-photos-stable-wall-ph-2.zip | 695.2 KB |
| masonry-photos-warehouse-ph-1.zip | 423.91 KB |
| masonry-photos-tbd-projects.zip | 1.23 MB |
This project involves the urgent restoration of a number (to be determined) of windows in the LHC Work Buildings. Since funds are limited, we need to carefully scope the project to include only the most urgent repairs. The first step is to inventory the windows and gage their condition. Attached is a spreadsheet to be used for this effort. The window schedule uses the following code to identify each window:
bFdN
Where:
b = Building: c (Carpenter Shop), f (Forge), s (Stable), w (Warehouse)
F = Floor (1, 2, 3)
d = Direction wall faces (n,e,w,s)
N = Number of window, as viewed from inside, left to right
So, a window code of w2e1 is the Warehouse 2nd floor east-side window, 1st on left as viewed from the inside.
The attached spreadsheet should be used to classify the windows according to condition, urgency, and estimated cost of repair. Then a project scope and detailed bid specification package written in order to obtain bids that can be fairly compared.
Also attached is a "Wood Doors and Windows" specification which can serve as a model for us to develop our own specification for this project. The attached spec comes from a similar project in Wolfboro, NH.
The floor plans for the 1st and 2nd floor are attached. These show the window locations for each of the buildings, and can be used to mark up detail for the development of bidding specs.
Also attached are two sets of images which show the building elevations and all windows, and some sample photos of representative windows.
The window schedule spreadsheet is shown here for illustration:
| Warehouse | Code | Condition | Est Cost | Urgency |
| 1 | w1e1 | |||
| 2 | w1e2 | |||
| 3 | w2e1 | |||
| 4 | w2e2 | |||
| 5 | w2e3 | |||
| 6 | w2e4 | |||
| 7 | w2s1 | |||
| 8 | w2s2 | |||
| 9 | w2s3 | |||
| 10 | w2s4 | |||
| Stable | ||||
| 11 | s2s1 | |||
| 12 | s1n1 | |||
| Forge | ||||
| 13 | f1n1 | |||
| 14 | f1n2 | |||
| 15 | f1e1 | |||
| 16 | f2n1 | |||
| 17 | f2e1 | |||
| 18 | f2s1 | |||
| 19 | f2w1 | |||
| Carpenter Shop | ||||
| 20 | c1e1 | |||
| 21 | c1e2 | |||
| 22 | c1e3 | |||
| 23 | c1e4 | |||
| 24 | c1e5 | |||
| 25 | c1s1 | |||
| 26 | c1s2 | |||
| 27 | c1s3 | |||
| 28 | c1w1 | |||
| 29 | c1w2 | |||
| 30 | c1w3 | |||
| 31 | c1w4 | |||
| 32 | c1w5 | |||
| 33 | c2n1 | |||
| 34 | c2n2 | |||
| 35 | c2n3 | |||
| 36 | c2e1 | |||
| 37 | c2e2 | |||
| 38 | c2e3 | |||
| 39 | c2e4 | |||
| 40 | c2e5 | |||
| 41 | c2s1 | |||
| 42 | c2s2 | |||
| 43 | c2s3 | |||
| 44 | c2w1 | |||
| 45 | c2w2 | |||
| 46 | c2w3 | |||
| 47 | c2w4 | |||
| 48 | c2w5 |
| Attachment | Size |
|---|---|
| lhc-window-schedule.xls | 10 KB |
| Wood Doors and Windows.pdf | 1003.4 KB |
| lhc-compound-dwg-7-1st-floor.pdf | 19.63 KB |
| lhc-compound-dwg-7-2nd-floor.pdf | 19.22 KB |
| window-photos-bldgs.zip | 1.95 MB |
| window-photos-details.zip | 1.11 MB |
Currently, the LHC Work Buildings are difficult to use because the electrical service is so limited in them. There is almost no lighting or electrical outlets in any Work Building other than the 1st and 2nd floor of the Carpenter Shop. In order to make better use of the space, even for warehousing, we need to install good work lighting and outlets on each floor. We should also, at some point, rip out the extensive legacy wiring which is confusing and unsightly.
Some specific needs:
There is at least some lighting and outlets in the Forge, Stable, and Carpenter Shop 1st and 2nd floors, so those are a lower priority.
The electric service for all of the Work Buildings is located at the rear Southeast corner of the Carpenter Shop. A single underground branch (20A?) leads from there to the Forge, and then through the Stable into the Warehouse. This branch is probably not adequate for even moderate use of the Warehouse. We should look at installing a larger branch and a service sub-panel in the Warehouse.
As with all significant projects, a detailed bid spec needs to be written so that bids can be fairly compared and the work is clearly understood.
Attached below are floor plans for the basement, first-floor, and second-floor of the LHC compound. These plans have no details about the electrical system, but they can be used for the development of a bidding spec by adding the electrical work detail.
| Attachment | Size |
|---|---|
| lhc-compound-dwg-7-basements.pdf | 23.2 KB |
| lhc-compound-dwg-7-1st-floor.pdf | 19.63 KB |
| lhc-compound-dwg-7-2nd-floor.pdf | 19.22 KB |
The basement floors of both the Carpenter Shop and the Warehouse are not suitable for use for anything more than dirty storage. Both could be quite useful for badly needed storage if they were finished with a concrete slab. The Carpenter Shop, in particular, could be a very useful space with a new concrete floor and good lighting and electrical service.
In addition, the floors present an ongoing moisture problem which threatens the newly stabilized wood structure. At the very least, we need to install a vapor barrier in the Warehouse basement.
The Warehouse and Carpenter's shop present two very different needs, use-cases, and current conditions, so they are described separately.
The Carpenter Shop basement floor is currently a mix of dirt and concrete areas. There are several concrete portions, poured and different times, and at slightly different levels. There is plumbing service in the basement, a toilet, underground electrical to the Office Building and the Forge, and a drain, all of which needs to be carefully accommodated in a new concrete floor. In addition, there are wood posts supporting the 1st floor, and stairways which need to be prepared for a concrete floor (plinths might be needed?)
The first step is a massive clean-out of the basement, and there are some valuable artifacts, tools, etc. which should be removed beforehand. The floor then needs to be leveled, a vapor barrier installed, probably a stone layer put down at least over the dirt area, and then a slab poured.
The Warehouse basement floor is currently all dirt. Since the ceiling height is less than 6', it could never be used as a public space, but might be a good storage space if it had a good floor and adequate lighting. If the cost of pouring concrete is more than we can afford, we could just install a bed of stone and pour a slab later. The minimum 'quick and dirty' low-cost treatment is just to install a piece of plastic as a vapor barrier.
There are several complications to installing a vapor barrier and stone bed. First, the floor is not level. There are several piles of dirt and a hole which need to be leveled. Also, there's a floor drain pit at the Southeast corner which needs to be left functional. There are some piles of brick and other valuable building materials that should be removed and stored in the shed first.
A scaled floor plan of the Work Buildings is attached below.
Also attached is a preliminary specification for cast in place concrete, produced by the engineer engaged to write the spec for the Urgent Repairs project (Ed Moll). It should be used in conjunction with other relevant specifications for a complete bid package so that bids can be compared fairly and work is clearly understood.
| Attachment | Size |
|---|---|
| 03300 Cast in Place Concrete.doc | 56.5 KB |
| lhc-compound-dwg-7-basements.pdf | 23.2 KB |
LHC is working with Prof. Gilbert Brown's civil engineering class at the University of Massachusetts in Lowell to develop an appropriate HVAC system for the warehouse on the LHC compound. The class will use the warehouse as a case-study in the analysis of alternative energy sources used for HVAC system. These energy sources are:
The class will conduct analysis over the course of the Spring 2011 semester and present their findings to the LHC at the end of the semester.
These pages of the LHC website will be used as a focal point to gather and publish information related to this project.
Supporting material:
Work Buildings Floor Plans (Scale is shown at bottom left of drawing)
Attached below are recent electric and gas bills for the LHC.
| Attachment | Size |
|---|---|
| lhc-elec-bill.pdf | 278.26 KB |
| lhc-gas-bill.pdf | 604.42 KB |
by Matt Russell
10 May 2011
First, let me thank everyone for their efforts. There were many very creative ideas presented, and we're looking forward to seeing them developed further. Here are some specific points of feedback:
Energy Load - The most critical aspect of the hvac analysis is the building energy load calculation, since that determines all of the rest of the design and operating costs. While many groups had the right equations for finding heat flow (q) through a surface, and some had used that for a couple surfaces, nobody had put it together into a complete solution. You can just use a spreadsheet with each row calculating q for each surface (wall, roof, etc.), then add them up to find a total q. Since the factors will be dramatically different for roof, floor, windows, and the adjacent West wall (which is shared by a heated furniture store) you really need to resolve q for each of these separately. The generic load factors given by square foot measures will not work since this is a very different structure.
Capacity vs. Operating Cost - The system capacity needs to be sized for the anticipated peak load, not an average temperature. We need to maintain at least 68 degrees when it's 5 degrees outside, so that will determine the heating capacity. The operating cost, however is based on degree days (http://en.wikipedia.org/wiki/Heating_degree_day) not average temperature, which is sort of meaningless unless we're planning on heating 24x7.
Insulation - Unfortunately, aesthetic and historical considerations prevent us from insulating as we might for maximum efficiency. That said, we are able to put whatever insulation we want on top of the roof, and under the first floor. Also, we can (and probably should) install interior storm windows to provide extra insulation. For your purposes, making the roof, floor, and window R values variable in your load model will allow you to play with the economics of improving them. Assume that the walls are 12" thick solid brick.
Assumptions for Geothermal installation - The entire parking area can be used for geothermal pipes, and you can assume that there is probably nothing we can't easily work around under it (pipes, wires, etc.).
Cooling vs dehumidification - For the purposes of archival storage, dehumidification is much more important than cooling. Beware of oversizing the cooling system, because that will shorten the duty cycle, thereby reducing the dehumidification effect.
Ductwork - It is OK to install ductwork throughout as needed.
Radiant floor - I don't see how we can use radiant flooring and keep with the aesthetic of the current floor and ceiling.
Presentation - It would be more valuable to us to have a really good analysis on load and cost tradeoffs, and less valuable to have an overview of technology. Your presentation can assume that we know how the technology works and focus more on the economics of your implementation.
Our main objective with your work is to use it to form the basis of a grant application to raise money to install an hvac system next year. The grant proposal doesn't have to be exact, but we should have a pretty clear idea of what source of energy we'll use and what the capacity of the system needs to be. We're very much looking forward to seeing your results! Please don't hesitate to contact me if I can help.
Thank you!
Matt
| group | energy | cost | cost | euac | max load | max load |
| install | operating | winter | summer | |||
| D | Elec | $12,000 | $600 | $1,536 | ||
| H | Elec | $17,965 | $655 | 120,043 | 70,502 | |
| L | Elec | $297,405 | $26,417 | 57,132 | ||
| B ? | Gas | |||||
| F | Gas | $81,763 | $6,762 | 511,800 | ? | |
| J | Gas | ? | ? | ? | 160,000 | ? |
| C | Geothermal | $55,700 | $1,600 | $4,442 | ? | ? |
| G | Geothermal | $32,000 | $2,196 | 104,423 | ||
| K ? | Geothermal | |||||
| A, E, I | Solar | $66,309 | $3,383 | 3,412 | ? | |
*** This is a completed project - pages are left for archival purposes ***
These pages document the Lawrence History Center Urgent Structural Repairs Project. This project involves emergency work on the buildings of the LHC compound - the Warehouse, Stable, Forge, and Carpenter's Shop - in order to repair damage that renders them at risk of collapse and unsafe to enter. Rotted and failing beams and decking must be replaced, and water infiltration must be stopped. This project has been funded in part by an emergency grant from the Massachusetts Historical Commission's Massachusetts Preservation Projects Fund (MPPF) and a grant from the Lawrence Community Development Block Grant (CDBG) program. We are greatly appreciative of their generosity and support.
This website will serve as a focal point for this project, and provide a current source of documentation, addenda, schedule, photographs, and other important information so that all interested participants in the project have current information.
The following documents comprise the bid specification package for this project:
Bidders must download and review these documents carefully. The bid form is included in the first document.
Important: All bidders must send an email to director@lawrencehistory.org indicating their intention to bid so that we can put you on an email list to notify you of addenda or other project changes.
The following is an Addendum to the Bid Specifications, and is a binding part of the contracting agreement. Please review carefully.
General: Where the Bid Specification requires submittals to, or coordination with, the Engineer, Architect, or Owner, these shall be made to/with the Clerk of the Works as named on the front of the Bid Specification.
Changes to specific sections:
Section 00300, under the section "Base Bid" the following section shall be added:
Unit Prices: For work in excess of the specific quantities enumerated in Section 01010-3 Part 3.1C, the following Unit Prices shall be used to calculate additional payments, as per that Section:
Decking replacement: ___________ $/sq ft
Roofing replacement: ___________ $/sq ft
Ledger beam replacement: ___________ $/sq ft
Section 01010-4 Item 6-6: Change the area of warehouse roof decking to be repaired from 64sf to 128sf. This makes it consistent with SKS-3, which specifies 128sf.
Section 01010-4 Item 6-10: Replace "Beam must be supported from the sides and jacked to level or a slight crown prior to gluing." with "Beam must be supported from the sides and jacked to level or a slight crown for at least 2 days prior to gluing to allow inspection of the levelled beam by the clerk of the works before the gluing operation is attempted." This is in addition to the attendence of the clerk of the works at the time of the gluing.
Section 01010-5 Item 7-6: The forge cupola roofing material shall be EPDM rubber, not asphalt.
Section 06100-2 Part 2.02B: Replace "Boards shall be of similar width, length and joint and species type to the existing boards." with "Boards shall be of a similar assortment of widths and lengths as the existing boards, such that the new decking is matched as closely as possible in appearance as the existing decking. This will require a range of widths, from 6" to 12", and an irregular pattern of use of each widths. No adjacent boards shall have the same width." Note that the species is specified earlier in this part as southern yellow pine.
Section 07300-2 Part 1.06B: Replace entire clause to read: "Contractor shall warrant the warehouse, stable and forge cupola roofs from leaking for a period of five (5) years on a non-prorated basis, including both labor and materials. "
Answers to Questions asked during the site walk-through:
Q1: Please forward Prevailing Wages/Davis-Bacon rates if required.
A: These are required, and will be attached on the website by Wednesday 4/8/09.
Q2: Should the replacement floor decking have a splined edge joint or is a tongue and groove joint acceptable (as shown on engineer's drawings)?
A: Tongue and groove is acceptable. Edges adjacent to the existing boards must be joined with a spline or tongue.
Q3: What should be the presumed thickness of the roof decking? Should the roof decking have a splined edge joint?
A: The roof decking can have a tongue and groove joint, and should match the thickness of the existing roof decking. Since there is no decking currently exposed it is not possible to measure this reliably now, but a loose (and rotten) piece of decking looks like it is about 2-1/4". It is the responsibility of the bidder to determine the correct thickness to match the current roof and floor decking.
Q4: The existing roof sheathing on the cupola would likely not survive removal of the existing roofing. Should replacement of sheathing be included in base bid? Will the new roofing be installed over the existing? include ice/water shield under shingles? are new flashings required?
A5: The addenda shows a change to EPDM rubber membrane roofing for the cupola. Replacement of sheathing should be included. New flashings are not required as the existing flashing can be reused.
Q6: Replacement of stove pipe is to begin at roof deck or below?
A: The stovepipe extends a short distance, less than 12 inches, below roof deck and so the entire stovepipe should be replaced and re-sealed at the roof as needed.
Q7: Specification items in section 07500, 1.02, A, B, and C are not noted on the drawings. Where are these repairs to be done (copper repairs, new copper components, downspout repairs, lead reglets, flashing and counter flashing)?
A: These items are not required. (They are vestiges of an earlier use of this spec that weren't removed, sorry.) There is no copper work, other than sealing of the coping on the warehouse, but there is nothing specific to copper about that work.
Q8: None of the manufacturers listed in section 07300 provide warranties for portions of a roof, only for a complete roof system. Performance of the work described in the specifications will replace roofing that is above the damaged areas, but will not necessarily address the roof's problems (e.g. none of the roofs are properly pitched to the roof drains). The water may be penetrating the roof anywhere.
A: We have shortened the warranty to 5 years from 14 in the addendum. Since one of the major objectives of this stabilization project is to make these buildings watertight, we need the roofer to assure that all possible sources of water infiltration have been identified and stopped, and then to guarantee this against leaks for a period of 5 years.
Q9: Item 7-4 in the Description of Work states "re-caulk parapet coping at warehouse". What sealant material is to be used at these joints? Which joints are to be sealed: soldered joints, locked joint at coping, or only the termination bar joint?
A: The sealant should be GE Silicone II, unless a better alternative is approved in advance. Both the termination bar and the coping joints must be re-sealed.
Q10: Is the Fire Alarm system a supervised system? Will there be any fees for the shut-down/re-installation of fire alarm devices mounted on structural members that are to be replaced/supported?
A: The fire-alarm system is a supervised system, and will require shut-down and re-starting several times so that it is active through the project. All appropriate fire and electrical codes must be complied with. An licensed electrician will be needed to perform minor adjustments to the conduit to allow a drop for the thickness of the LVL installed under the roof rafter in the carpenter's shop. These costs should be included in the bid.
The Lawrence History Center, Lawrence, Massachusetts (LHC), the Awarding Authority, request bids for the following project: 1) Repair damaged timber beams and decking, and selectively reinforce timber beams; 2) patch and repair roofing and flashing; 3) perform other accessory work where necessary to make this project complete and watertight. The LHC, constructed in 1883/1884,is listed on the National Register of Historic Places.
The project is partially funded by the Massachusetts Preservation Projects Fund through the Massachusetts Historical Commission.
All work must be performed in accordance with the documents, titled LHC Urgent Building Repairs, 03/18/2009 prepared by Lawrence History Center, 6 Essex St., Lawrence, MA 01840 (978/686-9230) and meet the Secretary of the Interior’s "Standards for Treatment of Historic Properties". State law prohibits discrimination.
Awarding of this contract is subject to Affirmative Action and Equal Opportunity guidelines. Bids are subject to federal Davis-Bacon prevailing wage requirements. Bidder to furnish certification documents for all employees to be employed in the project subject to this bid showing that they have successfully completed a course in construction safety and health approved by the US Occupation Safety and Health Administration that is at least ten(10) hours in duration. All bids must be accompanied by OSHA certificates. Bids that do not include these certificates will be rejected and considered non-responsive.
Bids shall be evaluated on the basis of price, previous experience with similar types of construction on historic building projects, ability to perform the work in a timely manner, and references. Bids are due at the LHC's office on or before 4:00 PM Friday, 10 April, 2009. The Lawrence History Center reserves the right to reject any and all bids.
Summary of Work
Here is a brief summary of the required work. The item numbers refer to the itemized details which follow:
1. Repair cracked beam in Carpenter's shop by gluing and bolting a 12' LVL to the bottom face. (Item 6-10)
2. Replace approx. 813sf of rotted 3" thick floor and roof decking in the warehouse and stable. Re-roof as needed over replaced roof decking (approx 368sf). (Items 6-2, 6-3, 6-5, 6-6, 6-7, 6-9, 7-1)
3. Replace rotted roof ledger beam over S wall of warehouse and stable, approx 23'. (Items 6-2, 6-9)
4. Provide support to the ends of 5 partially rotted beams in the SE corner of the warehouse (2 floors and roof) using vertical timber post bolted to wall. On SE 2nd floor joist, scarf new beam end. (Items 6-1, 6-4, 6-12)
5. Install concrete footing and steel column under rotted beam in basement of warehouse. Scarf new oak end to beam, approx 3' long. (Items 3-1, 5-1, 6-11)
6. Re-roof cupola on blacksmith's shop with rubber. Replace rusted stovepipe vent. (7-3, 7-6)
7. Miscellaneous recaulking and reflashing on warehouse and stable roofs to restore watertightness. (7-2, 7-4, 7-5)
Detailed Description of Work
The following excerpt, from Section 01010 of the building specifications, is the itemized list of work to be performed on this project. The numbers correspond to call-outs on the drawings.
Division 3 – Cast-in-Place Concrete
3-1. Provide new 16” x 2’-6” square concrete footing in basement of warehouse to support new pipe column above, as per SKS-5.
Division 5 - Metals
5-1. Install new 3.5” dia. steel pipe column to support south-eastern beam end at first-floor, as per SKS-5..
Division 6 - Wood
6-1. Install permanent vertical timber pilasters in the warehouse for the two south-east most roof beam ends, running from underside of roof beam to top of second floor beam. Bolt to the masonry wall using a screen tube epoxy system as per SKS-6.
6-2. Replace rotted warehouse roof decking along the east wall approx 32' x 3', 96 sf with like rough-cut 3" timber. Replace an additional section on the south wall, approx 12' x 8', 96 sf. Replace 18' ledger on S wall where rotted. When decking is removed, treat top of exposed beams with Boracare wood preservative.
6-3. Replace rotted warehouse second floor decking in the south-east corner, approx 16' x 14', 224 sf, with like rough-cut 3" timber.
6-4. Install permanent vertical timber pilasters in the warehouse for the two south-east most 2nd floor joist ends, running from underside of 2nd floor joist to top of first floor beam. Bolt to the masonry wall using a screen tube epoxy system as per SKS-6.
6-5. Replace rotted warehouse first floor decking in the south-east corner, with like rough-cut 3" timber, approximately 1’-4” x 24’-0”, 32 sf.
6-6. Replace rotted warehouse roof decking in the center of the north wall, approx 8' square, 64 sf.
6-7. Replace rotted stable second floor decking along southern bay, approx 8' x 24', 192 sf.
6-8. Repair end of rotted beam joist at the second floor south east corner of the warehouse using a scarf joint and 4 through bolts.
6-9. Replace rotted stable roof decking along southern wall, approx 6' x 8', 48 sf. Replace 8' of rotted ledger beam as needed.
6-10. Repair cracked roof beam in carpentry shop with 12' - 4” length of LVL glued and bolted to bottom of the beam as per detail SKS-7. Beam must be supported from the sides and jacked to level or a slight crown prior to gluing. Clerk of works to be on-site for inspection at the time of gluing.
6-11. Repair end of rotted beam joist at the first floor south east corner of the warehouse using a scarf joint and 4 through bolts. Joint is to be over the steel column, as per SKS-5.
6-12. Move post presently under southeast beam in basement of warehouse next beam-end (which has been replaced with steel column, see 5-1) to the north. Shim tightly over granite footing and spike to beam at top.
Division 7 - Thermal and Moisture Protection
7-1. Re-roof small sections in warehouse and stable roofs which were required to be removed in order to access the decking replacements described above. (See items 6-2, 6-6, and 6-9; approx 368 sf total)
7-2. Restore roof termination bars and galvanized flashing on warehouse roof. Re-secure termination bar. Cut and reseal top of termination bar sealant, approx 120'
7-3. Replace rusted stovepipe in blacksmith shop with equivalent pipe and vent system. Comply with building code requirements for height.
7-4. Re-caulk parapet coping on warehouse.
7-5. Cut out joint above flashing at the east wall of the warehouse over stable roof. Replace with backer rod and sealant.
7-6. Re-roof blacksmith shop cupola using rubber.
This project is governed by both federal and state prevailing wage laws, and contractors must use published prevailing wage rates. Information about this requirement can be found here and here.
The wage rates to be used are given here and here.
Please download these pages. The wage rate sheets will be attached to the contract documents.
The following is the schedule planned for this project:
PHASE I SCHEDULE - Beam, decking, and roof work
20 March 2009 - Place advertisements
25 March 2009 - 10:00AM Pre-bid meeting
3 April 2009 - Last day for questions
10 April 2009 - Bids due at LHC
1 May 2009 - Work must start by this date
30 June 2009 - Work must be completed by this date.
