Virginia Roofing Contractor License and Exam

The IRC contains many important changes such as:

• An updated seismic map reflects the most conservative Seismic Design Category (SDC) based on any soil type and a new map reflects less conservative SDCs when Site Class A, B or D is applicable.
• The townhouse separation provisions now include options for using two separate fire-resistant-rated walls or a common wall.
• An emergency escape and rescue opening is no longer required in basement sleeping rooms where the dwelling has an automatic fire sprinkler system and the basement has a second means of egress or an emergency escape opening.
• The exemption for interconnection of smoke alarms in existing areas has been deleted.
• New girder/header tables have been revised to incorporate the use of #2 Southern Pine in lieu of #1 Southern Pine.
• New tables address alternative wood stud heights and the required number of full height studs in high wind areas.

This code applies to all buildings except detached one- and two-family dwellings and townhouses up to three stories. The 2018 IBC contains many important changes such as:

• Accessory storage spaces of any size are now permitted to be classified as part of the occupancy to which they are accessory.
• New code sections have been introduced addressing medical gas systems and higher education laboratories.
• Use of fire walls to create separate buildings is now limited to only the determination of permissible types of construction based on allowable building area and height.
• Where an elevator hoistway door opens into a fire-resistance-rated corridor, the opening must be protected in a manner to address smoke intrusion into the hoistway.
• The occupant load factor for business uses has been revised to one occupant per 150 square feet.
• Live loads on decks and balconies increase the deck live load to one and one-half times the live load of the area served.
• The minimum lateral load that fire walls are required to resist is five pounds per square foot.
• Wind speed maps updated, including maps for the state of Hawaii.
• Terminology describing wind speeds has changed again with ultimate design wind speeds now called basic design wind speeds.
• Site soil coefficients now correspond to the newest generation of ground motion attenuation equations (seismic values).
• Five-foot tall wood trusses requiring permanent bracing must have a periodic special inspection to verify that the required bracing has been installed.
• New alternative fastener schedule for construction of mechanically laminated decking is added giving equivalent power-driven fasteners for the 20-penny nail.
• Solid sawn lumber header and girder spans for the exterior bearing walls reduce span lengths to allow #2 Southern Pine design values.

Updated through January 2023, the book provides a comprehensive set of the most up-to-date Construction regulations. Utilizing MANCOMM’s signature formatting approach – RegLogic – this edition includes notations for changes within the past year and letters of reference.

This book features:

• 1903 – Inspections, Citations, and Penalties
• Part 1904 – Recording and Reporting Occupational Illnesses and Injuries
• Selected 1910 General Industry Standards
• OSHA Forms 300
• Sharps Injury Log
• This edition also includes Subpart AA - Confined Spaces

Installation, repair and estimating for nearly every type of roof covering available today in residential and commercial structures: asphalt shingles, roll roofing, wood shingles and shakes, clay tile, slate, metal, built-up, and elastomeric. Covers sheathing and underlayment techniques, as well as secrets for installing leakproof valleys. Many estimating tips help you minimize waste, as well as insure a profit on every job. Troubleshooting techniques help you identify the true source of most leaks.

With five complete sections—Asphalt Shingle Roof Systems, Clay and Concrete Roof Systems, Metal Shingle Roof Systems, Slate Roof Systems, and Wood Shake and Wood Shingle Roof Systems—this manual is a welcome addition to your technical library.

Each section includes information about roof decks, underlayments, materials, design and installation. Construction details are provided in each section as follows:

• The Asphalt Shingle Roof Systems section includes 20 construction details.
• The Clay and Concrete Roof Systems section includes 73 construction details.
• The Metal Shingle Roof Systems section includes 19 construction details.
• The Slate Roof Systems section includes 21 construction details.
• The Wood Shake and Wood Shingle Roof Systems section includes 72 construction details.

This latest edition has a new format that assists with proper product and material selection. Users initially can reference the first chapter, which contains a selection of roof system configurations. Each of the configurations has a list of applicable roof components along with references explaining where to find additional information in the manual. Also included are 205 construction details for built-up roof (BUR) membrane, polymer-modified bitumen, liquid-applied, EPDM and thermoplastic membrane roof systems.

The NASCLA Contractors Guide to Business, Law and Project Management is organized into three sections.

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