Traffic Signage_Scope of Works and Technical Specifications_pdf
-
Upload
nuttyhappy -
Category
Documents
-
view
217 -
download
0
Transcript of Traffic Signage_Scope of Works and Technical Specifications_pdf
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
1/29
82
Technical Specifications
Technical Specifications for Materials(2009 DPWH Road Signs and Pavement Markings Manual)
A. 10. Materials for Sign Face
Any materials used for the sign face, and not otherwise described in this specification, shall be
in accordance with the approved standard specifications as described in the following sub-
sections:
A. 10.1. Retro-Reflective Materials
Where reflectorization is required the retro-reflecting materials shall comply with theestablished standards for retro-reflective materials and devices for road traffic
control purposes.
The ref lective sheeting shal l be weather resistant and show no apprec iable, cracking,
blistering, crazing or d imensional change after two (2) years of unprotected outdoor
exposure.
The reflective sheeting shall have high reflectivity normal to vehicle headlight
dependent on the angle of incidence. The reflective material shall be sharp, no glare
and directed towards the light source of approved angle of inc idence.
The reflective sheeting shall perform effectively for a minimum of seven (7) years
from date of fabrication.
The reflective sheeting must retain at least 70% (Type 1) & 50% (Type 2) of its
original brightness for regular and fluorescent sheeting respectively at the end of
seven (7) years. All signs used for road projects should be warranted by the sheeting
manufacturer for above- stated performance.
Signs must be dated at the time of delivery in order to initiate the 7-year
performance warranty. A sign dating sticker that indicates the manufacturers name,
material type/brand name with the month and year of delivery should be placed atthe back of the sign face.
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
2/29
83
The ref lective sheeting to be used maybe of two (2) types:
Type 1- High Performance Reflective Sheeting
Type 1 materials to be used for all overhead signs, signs related to movement of
pedestrians, chevron alignment signs and s igns identified as black spot areas. The
ref lective sheeting shall consist of full cube micro-prismatic lens sheet ing with an
interlocking d iamond seal pattern with pre-coated adhesive backing protected by a
removable liner. The minimum reflective brightness value of reflective sheeting
shall be in accordance with the following table:
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
3/29
84
Type 2 Medium Performance Reflective Sheeting
Type 2 materials to be used as minimum standards for al l other types of signs not
qualified for use under Type 1. The reflective sheeting shall consist of non-
metalized micro-prismatic lens in an interlocking d iamond pattern encapsulated by
a f lexible transparent plastic film that has a smooth outer surface. The sheeting
shall have a pre-coated adhesive protected by an easily removable liner. The
adhesive shall have a pressure-sensitive adhesive of the aggressive tack type
requiring no heat , solvent or other preparation for adhesion to surfaces.
The minimum ref lective brightness of reflective sheeting shall be in accordance with
the following table:
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
4/29
85
A. 10.2. Fluorescent Reflective Sheeting
The fluorescent reflective sheeting shall consist of a visible-activated fluorescent
materials and full cube micro-pr ismatic lens sheeting w ith an interlocking diamond seal
pattern with pre-coated adhesive backing protected by a removable liner. The minimum
ref lective brightness shall be in accordance with the following table:
A. 11. Materials for Construction
Standard Road signs shal l be constructed with metal. The signs may have a dished,
rolled or beaded edge for additional rigidity. In order to stiffen larger signs and prevent damageby bending, horizontal battens or bars should be fixed to the rear of the signs as supports, and
may be ut ilized to provide mounting to posts.
Metal Signs
Metal s igns sha ll be of 2.00 mm thick aluminum substrate materials with stiffening as
provided.
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
5/29
86
A. 12. Post and Attachments
Post requ ired for the erection of s igns shall be made of ga lvanized steel pipes not less
than 48.8 mm (outside diameter) x 3.25 mm thick, or other section of equivalent strength.
Wide flange posts and frames shall be fabricated from structural steel conforming to
ASTM A 283 Grade D. In lieu of wide flange steel posts, the Contractor may use tubular steel
posts conforming to ASTM A 501. All posts shall be thoroughly cleaned, free from grease, scale,
rusts and shall be given one coat of rust-inhibiting pr iming paint and two (2) coats of gray paint
in accordance with Ite m 411, Pa int DPWH Standard Specification.
Selection of non-frangible signpost lengths based on s ign panel s izes and post diameters
is given in Figure A.6. of the latest edition of the DPWH Road Signs and Pavement Markings
Manual.
Attachments shal l provide for the positive and robust connection of s igns to their
mount ing posts. Consideration shall be given to distributing attachment loads, e.g., by the
provision of a su itably shaped saddles and clamps or brackets for a round post. Detailed shop
drawings for the said illustrations shall be provided by the Supplier for approval of CDC.
For the larger s igns, the design of the sign support system as a whole shall take into
account possible wind loadings and the criteria spec ified in appropriate Philippine Code for
Structural Designs. A typical mounting sign is shown in Figure A.7.
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
6/29
87
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
7/29
88
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
8/29
89
A. 13. Protective Treatment
All materials used for signs and sign supports shall be either resistant to, or protected
against deterioration under exposed paint system.
Where corrosion protection is destroyed or damaged in the manufacturing or fixing
process, steps shall be taken to restore protection by appropriate after-treatment.
Where d ifferent metals are in contact, appropriate action shal l be taken to prevent
galvanic action and resultant corrosion.
Approval of Prototype
The supp lier shall submit within Fifteen (15) calendar days upon effectivity of contract a sample
prototype of the said signage for approval of CDC for each type of typical signage (Sign Faceonly). No fabrication of the said signage would be undertaken unless said sample signage had
been approved for fabrication. The said prototype should be included in the bid cost.
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
9/29
90
Priority Signs (R1)
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
10/29
91
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
11/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
12/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
13/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
14/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
15/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
16/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
17/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
18/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
19/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
20/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
21/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
22/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
23/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
24/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
25/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
26/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
27/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
28/29
-
8/10/2019 Traffic Signage_Scope of Works and Technical Specifications_pdf
29/29