1 Exam Prep Walker's Guide to Estimating, 30Th Edition Tabs and Highlights (Roofing Contractors)

1 Exam Prep Walker's Guide to Estimating, 30th Edition Tabs and Highlights (Roofing Contractors) These1 Exam Prep Tabs are based on the 30th edition of the Walker's Building Estimator's Reference Book, Copyright Frank R Walker Company. The exam will focus heavily on this reference book, as it parallels the CSI (construction specification institute, construction indexing system) and covers technical concepts in detail. A thorough preparation for the exam would include a close review of Chapter 1, General requirements (CSI division 001) as it covers many construction details. You can expect 3 or 4 test questions from this first chapter. Walker's addresses quantity details, and pricing details, for various construction categories. The examination will focus on quantity details and methods of calculating quantities, but will not place much emphasis on pricing details. If the test poses a pricing question, it will usually provide the prices and expect a calculation of the quantities involved to arrive at a final price. Each Tabs sheet has five rows of tabs. Start with the first tab at the first row at the top of the page, and proceed down that row placing the tabs at the locations listed below. Place each tab in your book setting it down one notch until you get to the bottom of the page, and then start back at the top again. After you have completed tabbing your book, then start with the highlights. 1 Exam Prep Tab Page # Table of Contents V General Req. 1 Definitions 19 Drawings 33 Symbols 39 CSI Index 57 Critical Path Scheduling 131 Concrete 319 Steel Forms 401 Lightweight Concrete 517 Roof Fill Precast Concrete Roof 576 Slabs Gypsum Roof Construction 607 Structural Metals 789 1 Exam Prep – Walker’s Guide to Estimating 30th Edition 1 1 Exam Prep Tab Page # Carpentry 845 Board Feet Quantities 849 Gable End Estimate 857 Nails 867 Wood Roof Trusses 887 Waterproofing 1019 Tar & Asphalt Felt 1027 Weights Insulation 1047 Roof Area 1065 Asphalt and Wood 1069 Shingles Clay Roofing Tile 1083 Membrane Roofing 1103 EPDM Roof Systems 1111 Flashing and Sheet Metal 1115 Painting Roofs 1387 Mensuration 1537 Glossary 1563 Safety 1589 Index 1601 This concludes the tabs for this document. Please continue with the highlights on the following page. 1 Exam Prep – Walker’s Guide to Estimating 30th Edition 2 Page # Highlight 1 General Requirements 1-2 The Role of the Estimator: The following requisites are essential for the making of a good estimator: Highlight the first sentence for items 1 thru 7. 2-3 The Role of the Contractor: Erecting a building is a complex undertaking and seldom is one firm capable of doing all phases of the work. Yet the owner or developer usually prefers to let one contract and make one firm responsible for the completion of the project. 4 The average percent of work performed by subcontractors for a general contractor cannot be precisely determined, but surveys conducted by the Associated General Contractors of America indicate from 40% to 70%. The American Subcontractor Association claims that 90% of the work force in the building construction industry is employed by subcontractors. 5 Usually there is a retainage of at least 5 to 10% by the general contractor to the subs and in turn by the owner to the general contractor. Retainage is not completely released until the project is substantially complete. It has become common practice to reduce the retainage by 50% when the project is 50% satisfactorily completed. 6 Construction Management: In Construction Management (CM), a general contractor or engineering company enters into a contract with the owner prior to the bidding period and acts in a managerial and advisory role. Bid packages for the project are usually taken under the construction manager's supervision. 7 They will provide reports on the project cost status, payment status, and an analysis of each contract and the project cash flow. The construction management approach has gained a wider acceptance in recent times, specially in federally sponsored construction. Bidding for a Contract: Construction contracts are awarded in one of two ways — competitive bidding or negotiation. 8 Cont. of prior page: the information that must be submitted will follow that contained in AIA document A-305 Contractor's Qualifications Statement. Once on a bidding list, a contractor will receive an Invitation to Bid or Bid Notice for each prospective job. Often the invitation to bid is accompanied by an Instruction to Bidders further defining the job restrictions such as completion dates, milestone dates, visiting job site, special conditions, etc. 1 Exam Prep – Walker’s Guide to Estimating 30th Edition 3 Page # Highlight The bid bond guarantees that the bidding contractor, if awarded a contract, will enter into the contract and furnish a performance and payment bond if required. If they do not honor their bid they forfeit the amount of the bond. Bid bonds and the later performance, material, labor, maintenance, completion, supply, and subcontractor bonds are often encountered in public work, but may not be required in private work, where the contractor's reputation is deemed sufficient and the cost of bonds unwarranted. Bid bond costs are customarily minimal, and the cost of bonds is borne by the contractor. 9 Negotiating a Contract: A variation of the negotiated contract is fast track, design build construction. In this arrangement the project may be started before all the plans are fully developed. Each phase of the job, such as foundation, masonry, carpentry, etc., is bid separately, just before the phase is required to be installed. Some advantages and disadvantages are: Highlight items 1 thru 3. As the phases are bid, the successful subcontractors may be assigned to a general contractor in the same manner as a lump-sum contract; or the general may act in the role of a project manager, in which case each subcontractor for each phase will have a direct contract with the owner. This variation is referred to as multiple bidding. Contract Documents: Once it is determined which contracting firm is to do the job, a formal contract will be drawn up. The Contract Documents usually should include the Owner-Contractor Agreement; the General Conditions of the Contract; Supplementary Conditions of the Contract (if any); the Working Drawings, giving all sheet numbers with revisions; Specifications, giving page numbers; and Addenda or Bulletins issued prior to contract 10-14 Highlight all bold letters titles for the AIA documents. 18 Addenda, Alternates, Approved Equal, Arbitration, Bid. Bid Bond, Cash Allowance, Certificate of Occupancy, Change Order, Contract Time, Cost Breakdown, Extras, Final Acceptance. Payment and Performance Bond, Letter of Intent, Liens, Liquidated damages, Maintenance Bond, Punch List, Retainage, Separate Contract, Shop Drawings, Subcontractor Bonds, Substantial Completion, Superintendent, Supplier, Supply Affidavit, Unit Prices, Upset Price, Warranty". The student should highlight the titles only. 24 The Cost of Money 25 Sources of Money: The main sources of money are: Highlight items 1-8. 26 Mortgage Loans: Once a loan is approved and accepted, there are certain charges called closing costs. and a part of these costs, known as points, origination fees, or the discount, cover the cost of setting up the loan. 1 Exam Prep – Walker’s Guide to Estimating 30th Edition 4 Page # Highlight The usual range of points is from 1% to 3%, but in states where there are legal limits set on the interest that may be charged, points have been quoted as high as 7% as a way to get around the usury laws. Mortgage Banker: For consummating the transaction, they charge a flat fee of around 1%to 2% of the loan placed. This fee is in addition to the usual closing costs that are charged by the lender. 27 Selling the Lender 29 Short Term Loans: The construction loan is a short term loan to cover the building costs during the erection of the project. 30 One such source is those who loan the difference between the floor and ceiling of the mortgage, this is known as gap financing. To obtain such a commitment one must pay in advance a flat fee, usually around 5% of the amount to be loaned. If the project reaches the income level to qualify for the full mortgage, and the gap loan is not needed, the fee is not refundable. 31 How much front money, or equity, an owner will need to launch the project will vary with the type of project, the money market, and the owner's reputation. It is often said that an owner with a proven need, a piece of property free of debt, and an architect's set of plans can obtain all the financing they will need. 31-32 Interim Financing: Progress, at this point, should place the contractor in a position to obtain from the bank a general commitment as to the limit and terms under which they would participate in granting short term loans (usually 30 to 90 days) 33 The Working Drawings: Each sheet should have a title block in the lower right-hand corner with the sheet number; the number of sheets in each set; the date made plus each date it has been revised, and the initials of the person or persons who drew and approved the sheet. The student should be familiar with the different letters usually assigned to the drawings. 34 Type of drawings: Most working drawings for building construction are based on orthographic projection, which is a parallel projection to a plane by lines perpendicular to the plane. In this way all dimensions will be true. If the plane is horizontal, the projection is a plan; if vertical, it is an elevation for outside the building, or a sectional elevation if through the building.

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