A compatible standard for all temporary construction signs will avoid visual clutter, improve public understanding of each project, and facilitate cost effective project sign production. The types and styles of signage will be in accordance with the Guide for Construction Site Signage.
The number and type of signs required will be determined by the project's scope, visibility, and impact to the NIH campus. The construction contractor shall submit a signage plan to the project officer for approval.
The construction area shall be well marked with signs that both notify and protect the general public. No portion of the signage shall extend into the walkway.
Sign posts for 'project signs' shall be fabricated from 4"x4" pressure treated wood posts.
Sign posts for other types of signs shall be of metal or other suitable material.
Existing and temporary crosswalk striping and stop bars affected by construction traffic shall be installed and/or maintained to be legible to pedestrian and vehicular traffic.
Prior to the start of construction operations, and after approval of the site signage plan, the contractor shall erect such signs, barricades, and other traffic control devices as may be required. Traffic control devices shall be operated only when needed.
Devices provided under this section that are lost, stolen, destroyed or deemed unacceptable shall be replaced by the contractor at no additional cost to the Government.
Sign panels, cones, drums, vertical panels and flagger paddles shall have retro reflective sheeting meeting the minimum requirements for Type 11 retro reflective material.
Standards for height and lateral clearance of roadside signs are shown in the MUTCD. Signs mounted on barricades may be at a lower height but shall not be less than one foot (305 mm) above the pavement elevation.
Traffic cones shall be a minimum of 32 inches (813 mm) in height with a broadened base and must be capable of withstanding impact with no damage to vehicles. All cones shall be orange colored and highly visible in daylight and darkness. Cones shall be capable of
Type A - on barricades or drums (used alone) or on first and last when used in a series for delineation
Type B - on warning signs
Type C - on barricades or drums in a series for delineation
Existing traffic control signs made void during construction shall be removed, stored, and reinstalled by the contractor.
Projects with exterior construction sites must have at least one and no more than three site signs (four feet by eight feet) as described in the Guide for Construction Site Signage.
Directional signs are permitted to direct traffic to the construction site(s). These signs will be in accordance with the Guide for Construction Site Signage , and will utilize existing posts (for directional signs) to the maximum extent possible. The bottom of directional signs should be at least 6.5 feet (1981 mm) above the ground.
Project signs shall be placed on site at least 14 calendar days prior to start of construction. Exterior construction signage shall be removed from the site no more than five workdays after completion of the project. The post holes should be filled in and the ground restored to its original condition.
Staging Area and Construction Sites
Contractor's staging areas and construction sites must be well marked to assist visitors and deliveries. Each staging area and each vehicle entrance to a construction site shall be allowed one company sign (no larger than 18 square feet). Individual trailers can have one company sign no larger than three square feet.
The sign(s) shall be mounted on the fencing, or inside the staging area or construction site.